项目中用到,这里把它给简化和通用了,突出基本思路,具体可以基于这个类来修改。
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提交到目标服务器。 * * @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提交到目标服务器。 * * @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请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); conn.setRequestMethod("POST"); // 可以拷贝客户端的head信息作为请求的head参数 // conn.setRequestProperty("Charsert", "UTF-8"); conn.setRequestProperty("Content-Type", "application/json"); // 直接把客户端的BODY传给目标服务器 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(); } }
时间: 2024-11-05 09:35:03