java实现http的GET/POST请求封装类-HttpRequest

最新推荐文章于 2025-05-02 11:32:06 发布
最新推荐文章于 2025-05-02 11:32:06 发布
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文章标签： java http
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java实现http的GET/POST请求封装类-HttpRequest

背景

在开发钉钉应用和微信应用时，会经常在java服务端以Http的GET或POST方式请求钉钉平台或微信平台的接口，为了方便发起请求，同时避免引入其他的java包，本人自己编写了一个发送http请求的类，封装了常规的get和post操作，并且不依赖任何其他的jar包，很底层~，也很原生。

代码实现

代码如下：

package com.mesnac.util;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

/**

  • Http请求封装类，封装常用的Get，Post请求方法
  • @author 郑立兵

/
public class HttpRequest {
/*
* 向指定URL发送GET方法的请求
*
* @param url
* 发送请求的URL
* @param param
* 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
* @return URL 所代表远程资源的响应结果
/
public static String sendGet(String url, String param) {
String result = “”;
BufferedReader in = null;
try {
String urlNameString = url + “?” + param;
URL realUrl = new URL(urlNameString);
// 打开和URL之间的连接
URLConnection connection = realUrl.openConnection();
// 设置通用的请求属性
connection.setRequestProperty(“accept”, "/*“);
connection.setRequestProperty(“connection”, “Keep-Alive”);
// connection.setRequestProperty(“Accept-Charset”, “UTF-8”);
connection.setRequestProperty(“user-agent”,
“Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)”);
// 建立实际的连接
connection.connect();
// 获取所有响应头字段
Map<String, List<String>> map = connection.getHeaderFields();
// 遍历所有的响应头字段
// for (String key : map.keySet()) {
// System.out.println(key + ”—>" + map.get(key));
// }
// 定义 BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(
connection.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}

		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> bresult <span class="token operator">=</span> result<span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		result <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">(</span>bresult<span class="token punctuation">,</span> <span class="token string">"utf-8"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
		System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"发送GET请求出现异常！"</span> <span class="token operator">+</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
		e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	<span class="token operator">/</span><span class="token operator">/</span> 使用<span class="token keyword">finally</span>块来关闭输入流
	<span class="token keyword">finally</span> <span class="token punctuation">{<!-- --></span>
		<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>in <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				in<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
		<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e2<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			e2<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
	<span class="token punctuation">}</span>

	<span class="token keyword">return</span> result<span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 向指定URL发送GET方法的请求
 * 
 * @param url
 *            发送请求的URL
 * @param param
 *            请求参数，请求参数应该是 name1=value1&amp;name2=value2 的形式。
 * @param encoding
 *            设置响应信息的编码格式，如utf-8
 * @return URL 所代表远程资源的响应结果
 */</span>
<span class="token keyword">public</span> <span class="token keyword">static</span> String <span class="token function">sendGet</span><span class="token punctuation">(</span>String url<span class="token punctuation">,</span> String param<span class="token punctuation">,</span> String encoding<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
	String result <span class="token operator">=</span> <span class="token string">""</span><span class="token punctuation">;</span>
	BufferedReader in <span class="token operator">=</span> null<span class="token punctuation">;</span>
	<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
		String urlNameString <span class="token operator">=</span> url <span class="token operator">+</span> <span class="token string">"?"</span> <span class="token operator">+</span> param<span class="token punctuation">;</span>
		URL realUrl <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">URL</span><span class="token punctuation">(</span>urlNameString<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 打开和URL之间的连接</span>
		URLConnection connection <span class="token operator">=</span> realUrl<span class="token punctuation">.</span><span class="token function">openConnection</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 设置通用的请求属性</span>
		connection<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"accept"</span><span class="token punctuation">,</span> <span class="token string">"*/*"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		connection<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"connection"</span><span class="token punctuation">,</span> <span class="token string">"Keep-Alive"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		connection<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"user-agent"</span><span class="token punctuation">,</span>
				<span class="token string">"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 建立实际的连接</span>
		connection<span class="token punctuation">.</span><span class="token function">connect</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 获取所有响应头字段
		Map<span class="token operator">&lt;</span>String<span class="token punctuation">,</span> List<span class="token generics function"><span class="token punctuation">&lt;</span>String<span class="token punctuation">&gt;</span></span><span class="token operator">&gt;</span> map <span class="token operator">=</span> connection<span class="token punctuation">.</span><span class="token function">getHeaderFields</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 遍历所有的响应头字段
		<span class="token operator">/</span><span class="token operator">/</span> <span class="token keyword">for</span> <span class="token punctuation">(</span>String key <span class="token operator">:</span> map<span class="token punctuation">.</span><span class="token function">keySet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
		<span class="token operator">/</span><span class="token operator">/</span> System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>key <span class="token operator">+</span> <span class="token string">"---&gt;"</span> <span class="token operator">+</span> map<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>key<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> <span class="token punctuation">}</span>
		<span class="token operator">/</span><span class="token operator">/</span> 定义 BufferedReader输入流来读取URL的响应
		in <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BufferedReader</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">InputStreamReader</span><span class="token punctuation">(</span>
				connection<span class="token punctuation">.</span><span class="token function">getInputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		String line<span class="token punctuation">;</span>
		<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>line <span class="token operator">=</span> in<span class="token punctuation">.</span><span class="token function">readLine</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			result <span class="token operator">+=</span> line<span class="token punctuation">;</span>
		<span class="token punctuation">}</span>

		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> bresult <span class="token operator">=</span> result<span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		result <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">(</span>bresult<span class="token punctuation">,</span> encoding<span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
		System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"发送GET请求出现异常！"</span> <span class="token operator">+</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
		e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	<span class="token operator">/</span><span class="token operator">/</span> 使用<span class="token keyword">finally</span>块来关闭输入流
	<span class="token keyword">finally</span> <span class="token punctuation">{<!-- --></span>
		<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>in <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				in<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
		<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e2<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			e2<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
	<span class="token punctuation">}</span>

	<span class="token keyword">return</span> result<span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 向指定 URL 发送POST方法的请求
 * 
 * @param url
 *            发送请求的 URL
 * @param param
 *            请求参数，请求参数应该是Json格式字符串的形式。
 * @return 所代表远程资源的响应结果
 */</span>
<span class="token keyword">public</span> <span class="token keyword">static</span> String <span class="token function">sendPost</span><span class="token punctuation">(</span>String url<span class="token punctuation">,</span> String jsonData<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
	PrintWriter out <span class="token operator">=</span> null<span class="token punctuation">;</span>
	BufferedReader in <span class="token operator">=</span> null<span class="token punctuation">;</span>
	String result <span class="token operator">=</span> <span class="token string">""</span><span class="token punctuation">;</span>
	<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
		URL realUrl <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">URL</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 打开和URL之间的连接</span>
		URLConnection con <span class="token operator">=</span> realUrl<span class="token punctuation">.</span><span class="token function">openConnection</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		HttpURLConnection conn <span class="token operator">=</span> <span class="token punctuation">(</span>HttpURLConnection<span class="token punctuation">)</span> con<span class="token punctuation">;</span>
		<span class="token comment">// 设置通用的请求属性</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestMethod</span><span class="token punctuation">(</span><span class="token string">"POST"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 设置Post请求</span>
		conn<span class="token punctuation">.</span><span class="token function">setConnectTimeout</span><span class="token punctuation">(</span><span class="token number">5</span> <span class="token operator">*</span> <span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"accept"</span><span class="token punctuation">,</span> <span class="token string">"*/*"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"connection"</span><span class="token punctuation">,</span> <span class="token string">"Keep-Alive"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"user-agent"</span><span class="token punctuation">,</span>
				<span class="token string">"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"Content-Type"</span><span class="token punctuation">,</span>
				<span class="token string">"application/x-www-form-urlencoded"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 设置内容类型</span>
		<span class="token operator">/</span><span class="token operator">/</span> conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"Content-Length"</span><span class="token punctuation">,</span>
		<span class="token operator">/</span><span class="token operator">/</span> String<span class="token punctuation">.</span><span class="token function">valueOf</span><span class="token punctuation">(</span>param<span class="token punctuation">.</span><span class="token function">length</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token operator">/</span><span class="token operator">/</span>设置长度
		<span class="token operator">/</span><span class="token operator">/</span> 发送POST请求必须设置如下两行
		conn<span class="token punctuation">.</span><span class="token function">setDoOutput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setDoInput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setUseCaches</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 获取URLConnection对象对应的输出流
		out <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">PrintWriter</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">OutputStreamWriter</span><span class="token punctuation">(</span>
				conn<span class="token punctuation">.</span><span class="token function">getOutputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string">"utf-8"</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 发送请求参数
		<span class="token operator">/</span><span class="token operator">/</span> out<span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span>param<span class="token punctuation">)</span><span class="token punctuation">;</span>
		out<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>jsonData<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> flush输出流的缓冲
		out<span class="token punctuation">.</span><span class="token function">flush</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 定义BufferedReader输入流来读取URL的响应
		in <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BufferedReader</span><span class="token punctuation">(</span>
				<span class="token keyword">new</span> <span class="token class-name">InputStreamReader</span><span class="token punctuation">(</span>conn<span class="token punctuation">.</span><span class="token function">getInputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		String line<span class="token punctuation">;</span>
		<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>line <span class="token operator">=</span> in<span class="token punctuation">.</span><span class="token function">readLine</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			result <span class="token operator">+=</span> line<span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> bresult <span class="token operator">=</span> result<span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		result <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">(</span>bresult<span class="token punctuation">,</span> <span class="token string">"utf-8"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
		System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"发送 POST 请求出现异常！"</span> <span class="token operator">+</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
		e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	<span class="token operator">/</span><span class="token operator">/</span> 使用<span class="token keyword">finally</span>块来关闭输出流、输入流
	<span class="token keyword">finally</span> <span class="token punctuation">{<!-- --></span>
		<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>out <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				out<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>in <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				in<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
		<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">IOException</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			ex<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
	<span class="token punctuation">}</span>
	<span class="token keyword">return</span> result<span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token keyword">public</span> <span class="token keyword">static</span> String <span class="token function">sendPost</span><span class="token punctuation">(</span>String url<span class="token punctuation">,</span> String jsonData<span class="token punctuation">,</span> String encoding<span class="token punctuation">,</span> String authorization<span class="token punctuation">,</span> String postmanToken<span class="token punctuation">)</span>
<span class="token punctuation">{<!-- --></span>
	PrintWriter out <span class="token operator">=</span> null<span class="token punctuation">;</span>
	BufferedReader in <span class="token operator">=</span> null<span class="token punctuation">;</span>
	String result <span class="token operator">=</span> <span class="token string">""</span><span class="token punctuation">;</span>
	<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
		URL realUrl <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">URL</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 打开和URL之间的连接
		URLConnection con <span class="token operator">=</span> realUrl<span class="token punctuation">.</span><span class="token function">openConnection</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		HttpURLConnection conn <span class="token operator">=</span> <span class="token punctuation">(</span>HttpURLConnection<span class="token punctuation">)</span> con<span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 设置通用的请求属性
		conn<span class="token punctuation">.</span><span class="token function">setRequestMethod</span><span class="token punctuation">(</span><span class="token string">"POST"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token operator">/</span><span class="token operator">/</span> 设置Post请求
		conn<span class="token punctuation">.</span><span class="token function">setConnectTimeout</span><span class="token punctuation">(</span><span class="token number">5</span> <span class="token operator">*</span> <span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"accept"</span><span class="token punctuation">,</span> <span class="token string">"*/*"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"connection"</span><span class="token punctuation">,</span> <span class="token string">"Keep-Alive"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"user-agent"</span><span class="token punctuation">,</span>
				<span class="token string">"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"Content-Type"</span><span class="token punctuation">,</span>
				<span class="token string">"application/x-www-form-urlencoded"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 设置内容类型</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"authorization"</span><span class="token punctuation">,</span> authorization<span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"postman-token"</span><span class="token punctuation">,</span> postmanToken<span class="token punctuation">)</span><span class="token punctuation">;</span>
		
		<span class="token comment">// conn.setRequestProperty("Content-Length",</span>
		<span class="token comment">// String.valueOf(param.length())); //设置长度</span>
		<span class="token comment">// 发送POST请求必须设置如下两行</span>
		conn<span class="token punctuation">.</span><span class="token function">setDoOutput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setDoInput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setUseCaches</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 获取URLConnection对象对应的输出流</span>
		out <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">PrintWriter</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">OutputStreamWriter</span><span class="token punctuation">(</span>
				conn<span class="token punctuation">.</span><span class="token function">getOutputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> encoding<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 发送请求参数</span>
		<span class="token comment">// out.print(param);</span>
		out<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>jsonData<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// flush输出流的缓冲</span>
		out<span class="token punctuation">.</span><span class="token function">flush</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 定义BufferedReader输入流来读取URL的响应</span>
		in <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BufferedReader</span><span class="token punctuation">(</span>
				<span class="token keyword">new</span> <span class="token class-name">InputStreamReader</span><span class="token punctuation">(</span>conn<span class="token punctuation">.</span><span class="token function">getInputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		String line<span class="token punctuation">;</span>
		<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>line <span class="token operator">=</span> in<span class="token punctuation">.</span><span class="token function">readLine</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			result <span class="token operator">+=</span> line<span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> bresult <span class="token operator">=</span> result<span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		result <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">(</span>bresult<span class="token punctuation">,</span> encoding<span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
		System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"发送 POST 请求出现异常！"</span> <span class="token operator">+</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
		e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	<span class="token comment">// 使用finally块来关闭输出流、输入流</span>
	<span class="token keyword">finally</span> <span class="token punctuation">{<!-- --></span>
		<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>out <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				out<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>in <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				in<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
		<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">IOException</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			ex<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
	<span class="token punctuation">}</span>
	<span class="token keyword">return</span> result<span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token comment">/**
 * 向指定 URL 发送POST方法的请求
 * 
 * @param url
 *            发送请求的 URL
 * @param jsonData
 *            请求参数，请求参数应该是Json格式字符串的形式。
 * @param encoding
 *            设置响应信息的编码格式，如utf-8
 * @return 所代表远程资源的响应结果
 */</span>
<span class="token keyword">public</span> <span class="token keyword">static</span> String <span class="token function">sendPost</span><span class="token punctuation">(</span>String url<span class="token punctuation">,</span> String jsonData<span class="token punctuation">,</span> String encoding<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
	PrintWriter out <span class="token operator">=</span> null<span class="token punctuation">;</span>
	BufferedReader in <span class="token operator">=</span> null<span class="token punctuation">;</span>
	String result <span class="token operator">=</span> <span class="token string">""</span><span class="token punctuation">;</span>
	<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
		URL realUrl <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">URL</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 打开和URL之间的连接</span>
		URLConnection con <span class="token operator">=</span> realUrl<span class="token punctuation">.</span><span class="token function">openConnection</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		HttpURLConnection conn <span class="token operator">=</span> <span class="token punctuation">(</span>HttpURLConnection<span class="token punctuation">)</span> con<span class="token punctuation">;</span>
		<span class="token comment">// 设置通用的请求属性</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestMethod</span><span class="token punctuation">(</span><span class="token string">"POST"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 设置Post请求</span>
		conn<span class="token punctuation">.</span><span class="token function">setConnectTimeout</span><span class="token punctuation">(</span><span class="token number">5</span> <span class="token operator">*</span> <span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"accept"</span><span class="token punctuation">,</span> <span class="token string">"*/*"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"connection"</span><span class="token punctuation">,</span> <span class="token string">"Keep-Alive"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"user-agent"</span><span class="token punctuation">,</span>
				<span class="token string">"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"Content-Type"</span><span class="token punctuation">,</span>
				<span class="token string">"application/x-www-form-urlencoded"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 设置内容类型</span>
		<span class="token operator">/</span><span class="token operator">/</span> conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"Content-Length"</span><span class="token punctuation">,</span>
		<span class="token operator">/</span><span class="token operator">/</span> String<span class="token punctuation">.</span><span class="token function">valueOf</span><span class="token punctuation">(</span>param<span class="token punctuation">.</span><span class="token function">length</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token operator">/</span><span class="token operator">/</span>设置长度
		<span class="token operator">/</span><span class="token operator">/</span> 发送POST请求必须设置如下两行
		conn<span class="token punctuation">.</span><span class="token function">setDoOutput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setDoInput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setUseCaches</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 获取URLConnection对象对应的输出流
		out <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">PrintWriter</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">OutputStreamWriter</span><span class="token punctuation">(</span>
				conn<span class="token punctuation">.</span><span class="token function">getOutputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> encoding<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 发送请求参数
		<span class="token operator">/</span><span class="token operator">/</span> out<span class="token punctuation">.</span><span class="token function">print</span><span class="token punctuation">(</span>param<span class="token punctuation">)</span><span class="token punctuation">;</span>
		out<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>jsonData<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> flush输出流的缓冲
		out<span class="token punctuation">.</span><span class="token function">flush</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token operator">/</span><span class="token operator">/</span> 定义BufferedReader输入流来读取URL的响应
		in <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BufferedReader</span><span class="token punctuation">(</span>
				<span class="token keyword">new</span> <span class="token class-name">InputStreamReader</span><span class="token punctuation">(</span>conn<span class="token punctuation">.</span><span class="token function">getInputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		String line<span class="token punctuation">;</span>
		<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>line <span class="token operator">=</span> in<span class="token punctuation">.</span><span class="token function">readLine</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			result <span class="token operator">+=</span> line<span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> bresult <span class="token operator">=</span> result<span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		result <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">(</span>bresult<span class="token punctuation">,</span> encoding<span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
		System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"发送 POST 请求出现异常！"</span> <span class="token operator">+</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
		e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	<span class="token operator">/</span><span class="token operator">/</span> 使用<span class="token keyword">finally</span>块来关闭输出流、输入流
	<span class="token keyword">finally</span> <span class="token punctuation">{<!-- --></span>
		<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>out <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				out<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>in <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				in<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
		<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">IOException</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			ex<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
	<span class="token punctuation">}</span>
	<span class="token keyword">return</span> result<span class="token punctuation">;</span>
<span class="token punctuation">}</span>



<span class="token comment">/**
 * 上传媒体文件
 * @param url
 * 				上传媒体文件的微信公众平台接口地址
 * @param file
 * 				要上传的媒体文件对象
 * @return
 * 				返回上传的响应结果，详情参看微信公众平台开发者接口文档
 */</span>
<span class="token keyword">public</span> <span class="token keyword">static</span> String <span class="token function">uploadPost</span><span class="token punctuation">(</span>String url<span class="token punctuation">,</span> File file<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
	DataOutputStream dos <span class="token operator">=</span> null<span class="token punctuation">;</span>
	FileInputStream fis <span class="token operator">=</span> null<span class="token punctuation">;</span>
	DataInputStream dis <span class="token operator">=</span> null<span class="token punctuation">;</span>
	BufferedReader in <span class="token operator">=</span> null<span class="token punctuation">;</span>
	String result <span class="token operator">=</span> <span class="token string">""</span><span class="token punctuation">;</span>
	String end <span class="token operator">=</span> <span class="token string">"\r\n"</span><span class="token punctuation">;</span>
	String twoHyphens <span class="token operator">=</span> <span class="token string">"--"</span><span class="token punctuation">;</span> <span class="token comment">// 用于拼接</span>
	String boundary <span class="token operator">=</span> <span class="token string">"*****"</span><span class="token punctuation">;</span> <span class="token comment">// 用于拼接 可自定义</span>
	<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
		URL realUrl <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">URL</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 打开和URL之间的连接</span>
		URLConnection con <span class="token operator">=</span> realUrl<span class="token punctuation">.</span><span class="token function">openConnection</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		HttpURLConnection conn <span class="token operator">=</span> <span class="token punctuation">(</span>HttpURLConnection<span class="token punctuation">)</span> con<span class="token punctuation">;</span>
		<span class="token comment">// 设置通用的请求属性</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestMethod</span><span class="token punctuation">(</span><span class="token string">"POST"</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 设置Post请求</span>
		<span class="token comment">// 发送POST请求必须设置如下两行</span>
		conn<span class="token punctuation">.</span><span class="token function">setDoOutput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setDoInput</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setUseCaches</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setConnectTimeout</span><span class="token punctuation">(</span><span class="token number">5</span> <span class="token operator">*</span> <span class="token number">1000</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"connection"</span><span class="token punctuation">,</span> <span class="token string">"Keep-Alive"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"Charset"</span><span class="token punctuation">,</span> <span class="token string">"UTF-8"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		conn<span class="token punctuation">.</span><span class="token function">setRequestProperty</span><span class="token punctuation">(</span><span class="token string">"Content-Type"</span><span class="token punctuation">,</span>
				<span class="token string">"multipart/form-data; boundary="</span> <span class="token operator">+</span> boundary<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// 设置内容类型</span>
		
		<span class="token comment">// 获取URLConnection对象对应的输出流</span>
		dos <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">DataOutputStream</span><span class="token punctuation">(</span>conn<span class="token punctuation">.</span><span class="token function">getOutputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">//1、写入媒体头部分</span>
		StringBuilder sb <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">StringBuilder</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		sb<span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span>twoHyphens<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span>boundary<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span>end<span class="token punctuation">)</span><span class="token punctuation">;</span>
		sb<span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span><span class="token string">"Content-Disposition: form-data;name=\"file\";filename=\""</span> <span class="token operator">+</span> file<span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">"\""</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span>end<span class="token punctuation">)</span><span class="token punctuation">;</span>
		sb<span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span><span class="token string">"Content-Type:application/octet-stream"</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span>end<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">append</span><span class="token punctuation">(</span>end<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> head <span class="token operator">=</span> sb<span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token string">"utf-8"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		dos<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>head<span class="token punctuation">)</span><span class="token punctuation">;</span>
		
		<span class="token comment">//2、写入媒体正文部分， 对文件进行传输</span>
		fis <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">FileInputStream</span><span class="token punctuation">(</span>file<span class="token punctuation">)</span><span class="token punctuation">;</span>
		dis <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">DataInputStream</span><span class="token punctuation">(</span>fis<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> buffer <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">byte</span><span class="token punctuation">[</span><span class="token number">8192</span><span class="token punctuation">]</span><span class="token punctuation">;</span> <span class="token comment">// 8K</span>
		<span class="token keyword">int</span> count <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
		<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>count <span class="token operator">=</span> dis<span class="token punctuation">.</span><span class="token function">read</span><span class="token punctuation">(</span>buffer<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!=</span> <span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			dos<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>buffer<span class="token punctuation">,</span> <span class="token number">0</span><span class="token punctuation">,</span> count<span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
		
		<span class="token comment">//3、写入媒体结尾部分。</span>
		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> foot <span class="token operator">=</span> <span class="token punctuation">(</span>end <span class="token operator">+</span> twoHyphens <span class="token operator">+</span> boundary <span class="token operator">+</span> twoHyphens <span class="token operator">+</span> end<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token string">"utf-8"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		dos<span class="token punctuation">.</span><span class="token function">write</span><span class="token punctuation">(</span>foot<span class="token punctuation">)</span><span class="token punctuation">;</span>
		dos<span class="token punctuation">.</span><span class="token function">flush</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token comment">// 定义BufferedReader输入流来读取URL的响应</span>
		in <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">BufferedReader</span><span class="token punctuation">(</span>
				<span class="token keyword">new</span> <span class="token class-name">InputStreamReader</span><span class="token punctuation">(</span>conn<span class="token punctuation">.</span><span class="token function">getInputStream</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		String line<span class="token punctuation">;</span>
		<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>line <span class="token operator">=</span> in<span class="token punctuation">.</span><span class="token function">readLine</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			result <span class="token operator">+=</span> line<span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
		<span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> bresult <span class="token operator">=</span> result<span class="token punctuation">.</span><span class="token function">getBytes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		result <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">(</span>bresult<span class="token punctuation">,</span> <span class="token string">"utf-8"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> e<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
		System<span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span><span class="token string">"发送 POST 请求出现异常！"</span> <span class="token operator">+</span> e<span class="token punctuation">)</span><span class="token punctuation">;</span>
		e<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
	<span class="token punctuation">}</span>
	<span class="token comment">// 使用finally块来关闭输出流、输入流</span>
	<span class="token keyword">finally</span> <span class="token punctuation">{<!-- --></span>
		<span class="token keyword">try</span> <span class="token punctuation">{<!-- --></span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>dos <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				dos<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>dis <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				dis<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>fis <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				fis<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
			<span class="token keyword">if</span> <span class="token punctuation">(</span>in <span class="token operator">!=</span> null<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
				in<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
			<span class="token punctuation">}</span>
		<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">IOException</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{<!-- --></span>
			ex<span class="token punctuation">.</span><span class="token function">printStackTrace</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
		<span class="token punctuation">}</span>
	<span class="token punctuation">}</span>
	<span class="token keyword">return</span> result<span class="token punctuation">;</span>
<span class="token punctuation">}</span>

}

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希望对各位有所帮助~

POST/GET请求的区别以及Java实现HTTP（post/get）请求
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HTTP的请求是成对儿的，有request就有response。称之为“上行请求”和“下行响应”。不管是哪种请求，都会“报头”+“报文”的形式传输数据；get 和 post请求是http协议中的两种请求方式；get一般用来获取服务器的信息的，post一般是用来更新信息。
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目前JAVA实现HTTP请求的方法用的最多的有两种：一种是通过HTTPClient这种第三方的开源框架去实现。HTTPClient对HTTP的封装性比较不错，通过它基本上能够满足我们大部分的需求，HttpClient3.1 是 org.apache.commons.httpclient下操作远程 url的工具包，虽然已不再更新，但实现工作中使用httpClient3.1的代码还是很多，HttpCl...
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Apache HttpClient为开发者提供了丰富的接口，用于管理HTTP连接并执行请求。它支持请求和响应的拦截，可以用于修改请求头、记录日志、处理重定向、管理超时和缓存等。其优势主要体现在以下几个方面：强大的协议支持：除了基本的HTTP/1.1，还支持HTTP/2和SPDY协议。灵活的连接管理：提供了连接池、重试机制、自定义的认证策略等功能。扩展性：允许开发者自定义拦截器、提供扩展点用于集成其他功能。
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03-24 3039
需求 最近在写一个Spring boot的Java后端小项目，而在项目的需求中需要向网络发送http请求收集（爬取）网络上的信息。具体的需求如下： 能发送get、post请求； 通过方法添加查询参数而不是用拼接url的方式； 发送post请求能携带表单数据和json格式的数据； 能添加自定义头信息； 能添加和获取Cookie(其实添加头信息就能添加Cookie了，但是因为用的多所以直接加个方法）...
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weixin_33724570的博客
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目前JAVA实现HTTP请求的方法用的最多的有两种：一种是通过HTTPClient这种第三方的开源框架去实现。HTTPClient对HTTP的封装性比较不错，通过它基本上能够满足我们大部分的需求，HttpClient3.1 是 org.apache.commons.httpclient下操作远程 url的工具包，虽然已不再更新，但实现工作中使用httpClient3.1的代码还是很多，Htt...
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package com.marco.common;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.URI;import java.util.ArrayList;import java.util.Iterator;import java....
JAVA发送http get/post请求，调用http接口、方法详解
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在Java编程中，发送HTTP GET和POST请求是常见的任务，特别是在与远程服务器交互或调用API接口时。本文将详细讲解如何使用Java实现这两种请求，以及如何处理响应。我们将使用Apache HttpClient库，这是一个广泛使用的...
Java如何发起http请求的实现(GET/POST)
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前言 在未来做项目中，一些功能模块可能会采用不同的语言进行编写。这就需要http请求进行模块的调用。那么下面，我将以Java为例，详细说明如何发起http请求。 一、GET与POST GET和POST是HTTP的两个常用方法。 GET指从指定的服务器中获取数据 POST指提交数据给指定的服务器处理 1.GET方法 使用GET方法，需要传递的参数被附加在URL地址后面一起发送到服务器。 例如：http://121.41.111.94/submit?name=zxy&age=21 特点： GET请求能
https的get和post请求，去除ssl校验的java工具类
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java的get和post请求，获取json的工具类，https时会存在ssl校验的问题，工具会自动去除ssl校验。
Http请求接口方法封装及Demo
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接口调用传入两个参数：post（url, map）简化接口调用代码
java http封装类_HTTP请求封装Java工具类
weixin_33657090的博客
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com.wiker;import java.io.BufferedReader; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStrea...
Java中文博客中最全的Http请求封装工具类
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本篇文章介绍了如何封装Java HTTP请求工具类来支持多种请求方式，包括Get请求、Post表单提交请求、Post表单文件提交请求、Post application/json 请求、Webservice请求和请求转发。Post application/json 请求是一种用于将JSON格式的数据提交到服务器的请求方式。Post表单文件提交请求是一种用于上传文件到服务器的请求方式。Post表单提交请求是一种用于向服务器提交数据的请求方式。Get请求是用于从服务器获取数据的一种请求方式。
HTTP请求封装Java工具类
小飞技术
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今天项目需要对接短信接口,短信接口使我们自己写的,所以需要一个Http请求,于是就百度查了一下,具体看代码: import org.slf4j.Logger; import org.slf4j.LoggerFactory; import sun.net.www.http.HttpClient; import java.io.*; import java.net.HttpURLConnectio...
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Java 封装 HTTP 请求对接企业 API
java get封装_Java post和get请求的封装（copy直接用）
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importjava.io.BufferedReader;importjava.io.IOException;importjava.io.InputStreamReader;importjava.io.PrintWriter;importjava.net.URL;importjava.net.URLConnection;importjava.text.SimpleDateFormat;import...
Java封装http请求
努力奋斗
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import org.apache.http.*; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.ap...
java基础 - 使用HttpClient封装http工具类
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【代码】使用HttpClient封装http工具类。
HTTPRequest: Java中实现HTTP请求的get和post方法
资源摘要信息:"HTTPRequest:用 Java 编码的 HTTP Wrapper 支持 get 和 post 请求以及 cookie" 知识点详细说明: 1. HTTPWrapper 简介 HTTPWrapper 是一个封装了 HTTP 协议相关操作的 Java 类库，旨在简化 HTTP ...
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