在项目中使用，这简化和通用汽车。突出的基本思路，细节可以基于此类改变。

基于java容器和servlet。

package com.xxx.first;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.OutputStream;

import java.io.PrintWriter;

import java.net.HttpURLConnection;

import java.net.URL;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.compress.utils.IOUtils;

public class SimpleProxy {

    /**

     * 使用GET提交到目标server。

     *

     * @param request

     * @param response

     * @param targetUrl

     * @throws IOException

     */

    private void get(HttpServletRequest request, HttpServletResponse response,

	    String targetUrl) throws IOException {

	URL url = new URL(targetUrl);

	BufferedReader in = new BufferedReader(new InputStreamReader(

		url.openStream()));

	String line;

	PrintWriter out = response.getWriter();

	while ((line = in.readLine()) != null) {

	    out.println(line);

	}

	out.flush();

	in.close();

    }

    /**

     * 使用POST提交到目标server。

     *

     * @param request

     * @param response

     * @param targetUrl

     * @throws IOException

     */

    private void post(HttpServletRequest request, HttpServletResponse response,

	    String targetUrl) throws IOException {

	URL url = new URL(targetUrl);

	HttpURLConnection conn = (HttpURLConnection) url.openConnection();

	// 发送POST请求必须设置例如以下两行

	conn.setDoOutput(true);

	conn.setDoInput(true);

	conn.setRequestMethod("POST");

	// 能够拷贝client的head信息作为请求的head參数

	// conn.setRequestProperty("Charsert", "UTF-8");

	conn.setRequestProperty("Content-Type", "application/json");

	// 直接把client的BODY传给目标server

	OutputStream send = conn.getOutputStream();

	InputStream body = request.getInputStream();

	IOUtils.copy(body, send);

	send.flush();

	send.close();

	body.close();

	// 获取返回值

	BufferedReader in = new BufferedReader(new InputStreamReader(

		conn.getInputStream()));

	PrintWriter out = response.getWriter();

	String line;

	while ((line = in.readLine()) != null) {

	    out.println(line);

	}

	out.flush();

    }

}