HttpUtil

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已于 2024-04-02 14:11:15 修改

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分类专栏： java-util 文章标签： java http httpclient

于 2021-06-01 15:42:44 首次发布

本文链接：https://blog.youkuaiyun.com/hjgzj/article/details/117444620

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博客提及在Java开发里，通过pom.xml进行相关引入。结合标签可知，可能是引入与http、httpclient相关依赖，这在Java后端开发中是常见操作，能助力实现网络请求等功能。

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pom.xml引入

<dependency>
    <groupId>commons-httpclient</groupId>
    <artifactId>commons-httpclient</artifactId>
    <version>3.1</version>
</dependency>

package com.util;

import java.io.IOException;
import java.util.List;
import java.util.Map;

import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

@SuppressWarnings("deprecation")
public class HttpUtil {
	
	private static final Log log = LogFactory.getLog(HttpUtil.class);

	/**
	 * post请求，通过键值对的形式，并非通过ResponseBody的形式
	 * @param connectionTimeout 连接超时时间，单位：毫秒
	 * @throws IOException 
	 * @throws HttpException 
	 */
	public static String doPost(String url, Map<String, String> map, int connectionTimeout) throws HttpException, IOException {
		
		HttpClient httpClient = new HttpClient();
		httpClient.setConnectionTimeout(connectionTimeout);
		
		PostMethod postMethod = new PostMethod(url);
		
		NameValuePair pair[] = new NameValuePair[map.size()];
		int index = 0;
		for (Map.Entry<String, String> entry : map.entrySet()) {
			pair[index] = new NameValuePair(entry.getKey(), entry.getValue());
		}
		postMethod.addParameters(pair);
	
		httpClient.executeMethod(postMethod);
		
		String str = postMethod.getResponseBodyAsString();
		log.info("返回消息：" + str);
		
		return str;
	}
	
	/**
	 * post请求，通过ResponseBody的形式传参
	 * @param connectionTimeout 连接超时时间，单位：毫秒
	 * @throws IOException 
	 * @throws HttpException 
	 */
	public static String doPost(String url, String msg, int connectionTimeout) throws HttpException, IOException {

		log.info("url=" + url);
		log.info("msg=" + msg);
		
		HttpClient httpClient = new HttpClient();
		httpClient.setConnectionTimeout(connectionTimeout);
		PostMethod postMethod = new PostMethod(url);
		postMethod.setRequestBody(msg);
		postMethod.setRequestHeader("Content-Type", "application/json");
		httpClient.executeMethod(postMethod);
		
		String str = postMethod.getResponseBodyAsString();
		log.info("返回消息：" + str);
		
		return str;
	}
	
	/**
	 * post请求，通过ResponseBody的形式传参
	 * @param header
	 * @param connectionTimeout 连接超时时间，单位：毫秒
	 * @throws IOException 
	 * @throws HttpException 
	 */
	public static String doPost(String url, String msg, List<Header> headerList, int connectionTimeout) throws HttpException, IOException {

		log.info("url=" + url);
		log.info("msg=" + msg);
		
		HttpClient httpClient = new HttpClient();
		httpClient.setConnectionTimeout(connectionTimeout);
		PostMethod postMethod = new PostMethod(url);
		postMethod.setRequestBody(msg);
		
		for (Header header : headerList) {
			postMethod.setRequestHeader(header);
		}
		
		httpClient.executeMethod(postMethod);
		
		String str = postMethod.getResponseBodyAsString();
		log.info("返回消息：" + str);
		
		return str;
	}
}