用java Socket实现HttpClient可能出现的一个错误

 

一个java Socket实现HttpClient可能出现的一个错误

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class test2 {
 public static void main(String arg[]) throws Exception
 {
  try {
   Socket socket = new Socket("www.baidu.com",80);
   byte[] bytes = ("GET / HTTP/1.1/n" +
   "Host:www.baidu.com/n" +
   "Connection:close/n" +
   "User-agent:Mozilla/4.0/n" +
   "Accept-language:zh-cn/n" +
   "/n").getBytes("UTF-8");
   socket.getOutputStream().write(bytes);
   ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream(8192);
   
   int c ;
   while( (c = socket.getInputStream().read()) != -1){
    arrayOutputStream.write(c);
   }
   
   System.out.println(new String(arrayOutputStream.toByteArray()));
   
  } catch (UnknownHostException e) {
   e.printStackTrace();

  } catch (IOException e) {
   e.printStackTrace();
  }

 }
}

注意那个 GET 如果写成Get 则可能有些站点不能够过的http文件,比如www.baidu.com