POST/GET请求UNTIL

package com.*.*.web.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

public class HttpUntil {
	
	/**
	 * GET
	 */
	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("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;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }
	
	/**
	 * POST
	 */
	 public static String sendPost(String url, String param) {
	        PrintWriter out = null;
	        BufferedReader in = null;
	        String result = "";
	        try {
	            URL realUrl = new URL(url);
	            // 打开和URL之间的连接
	            URLConnection conn = realUrl.openConnection();
	            // 设置通用的请求属性
	            conn.setRequestProperty("accept", "*/*");
	            conn.setRequestProperty("connection", "Keep-Alive");
	            conn.setRequestProperty("user-agent",
	                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
	            // 发送POST请求必须设置如下两行
	            conn.setDoOutput(true);
	            conn.setDoInput(true);
	            // 获取URLConnection对象对应的输出流
	            out = new PrintWriter(conn.getOutputStream());
	            // 发送请求参数
	            out.print(param);
	            // flush输出流的缓冲
	            out.flush();
	            // 定义BufferedReader输入流来读取URL的响应
	            in = new BufferedReader(
	                    new InputStreamReader(conn.getInputStream()));
	            String line;
	            while ((line = in.readLine()) != null) {
	                result += line;
	            }
	        } catch (Exception e) {
	            System.out.println("发送 POST 请求出现异常！"+e);
	            e.printStackTrace();
	        }
	        //使用finally块来关闭输出流、输入流
	        finally{
	            try{
	                if(out!=null){
	                    out.close();
	                }
	                if(in!=null){
	                    in.close();
	                }
	            }
	            catch(IOException ex){
	                ex.printStackTrace();
	            }
	        }
	        return result;
	    }    

}

public static void main(String[] args) {
		

        String sr=HttpUntil.sendPost("http://ip:port/ws/rest", str);//集成环境

        JSONObject srJson = JSON.parseObject(sr);
	 * dto JSON.toJavaObject(srJson, *.class);
	  System.out.println(sr);

 } 

*交流分享，杜绝私藏。崇尚开源