java抓取网页源码

import java.io.*;
import java.net.*; 

public class test
{
public static void main(String args[])
{ 

//判断参数是否为两个，正确的用法为 FirstSocket 网站页面
    if(args.length!=2)
    {
     System.out.println("Usage : FirstSocket host page\r\nExample:FirstSocket www.google.com");
    System.exit(0);
    }
　　　//示例：http：//www.circul.org/index.php
    String strServer=args[0]; //取得第一个参数 www.circul.org

    String strPage = args[1]; //取得第二个参数 要浏览的页面 /index.php

try
{
    String hostname = strServer;
    int port = 80;
    InetAddress addr = InetAddress.getByName(hostname);
   // System.out.println("myvar "+addr+"\r\n");
    Socket socket = new Socket(addr, port); //建立一个Socket 

    //发送命令
    BufferedWriter wr = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8"));
    wr.write("GET " + strPage + " HTTP/1.0\r\n");
    //System.out.println("POST " + strPage + " HTTP/1.0\r\n");
    wr.write("HOST:" + strServer + "\r\n");
    //System.out.println("HOST:" + strServer + "\r\n");
    wr.write("\r\n");
    wr.flush(); 

    //接收返回的结果
    BufferedReader rd = new BufferedReader(new InputStreamReader

    (socket.getInputStream()));
    String line;
    while ((line = rd.readLine()) != null) {
    System.out.println(line);
    }
    wr.close();
    rd.close();
}
catch (Exception e)
{
    System.out.println(e.toString());
}
}
}