利用Socket模拟http请求

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利用Socket直接发送请求到服务器，模拟浏览器的动作，接受相关返回的结果。

import java.io.*;import java.net.Socket;public class SocketTest2 {/** * @param args */public static void main(String[] args) throws Exception{ Socket s=new Socket("127.0.0.1",80); OutputStream out=s.getOutputStream(); PrintWriter pw=new PrintWriter(out); pw.println("POST /page/user/userLogin.action HTTP/1.1"); pw.println("User-Agent: Opera/9.80 (Windows NT 5.1; U; zh-cn) Presto/2.10.229 Version/11.62"); pw.println("Host: 127.0.0.1:80"); pw.println("Accept: text/html, application/xml;q=0.9, application/xhtml+xml, image/png, image/webp, image/jpeg, image/gif, image/x-xbitmap, */*;q=0.1"); pw.println("Accept-Language: en,zh;q=0.9,zh-CN;q=0.8"); pw.println("Accept-Encoding: gzip, deflate"); pw.println("Connection: Keep-Alive"); pw.println();//必须，这是http协议规定的一个空行 pw.println("userId=xxx&userPassword=xxx&rand=8024");//发送参数 pw.flush(); InputStream in=s.getInputStream(); BufferedReader br=new BufferedReader(new InputStreamReader(in)); String str=null; while((str=br.readLine())!=null) { System.out.println(str); } br.close(); s.close();}}