socket TCP通讯 客户端一直循环输出welcome 求挑错

Question

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

public class Server {
public static final int PORT=8888;
public static void main(String[] args) throws IOException{
ServerSocket ss=new ServerSocket(PORT);
System.out.println(ss);
try{
//记录客户端的数量
int count=0;
System.out.println("***服务器即将启动,等待客户端的连接***");
//循环监听,等待客户端的连接
while(true){
Socket socket=ss.accept();
//创建新线程
ServerThread serverThread=new ServerThread(socket);
//启动线程
serverThread.start();

            count++;
            System.out.println("客户端的数量:"+count);
            InetAddress address=socket.getInetAddress();
            System.out.println("当前客户端的IP:"+address.getHostAddress());
            }
    }catch(IOException e){
        e.printStackTrace();
    }finally{
        ss.close();
    }

}

}

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

/*

• 服务器线程处理类
  */
  public class ServerThread extends Thread{
  //和本线程相关的socket
  Socket socket=null;

  public ServerThread(Socket socket) {
  this.socket = socket;
  }

  //线程执行的操作,响应客户端的请求
  @Override
  public void run() {

  BufferedReader in=null;
  PrintWriter out=null;
  try{
      //获取输入输出流
      in=new BufferedReader(
             new InputStreamReader(
                 socket.getInputStream()));
      String info=null;
      while((info=in.readLine())!=null){
          System.out.println("我是服务器,客户端说"+info);
      }
      socket.shutdownInput();
  
      out=new PrintWriter(
              new BufferedWriter(
                  new OutputStreamWriter(
                      socket.getOutputStream())));
      out.println("welcome!");
      out.flush();//调用flush()方法将缓冲输出
  }catch(IOException e){
      e.printStackTrace();
  }finally{
      try{
          if(in!=null)
              in.close();
          if(out!=null)
              out.close();
      }catch(IOException e){
          e.printStackTrace();
      }
  }
  

  }

}

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

/*

• 客户端
  */
  public class Client {
  public static void main(String[] args)throws IOException {
  Socket socket=new Socket("localhost",Server.PORT);
  try{
  
  BufferedReader in=new BufferedReader(
  new InputStreamReader(
  socket.getInputStream()));

      PrintWriter out=new PrintWriter(
                          new BufferedWriter(
                                  new OutputStreamWriter(
                                          socket.getOutputStream())));
      out.println("用户名:mtone;密码:123");
      out.flush();
      //flush()表示强制将缓冲区中的数据发送出去,不必等到缓冲区满
      socket.shutdownOutput();
  
      String info=null;
      info=in.readLine();
      while(info!=null){
          System.out.println("我是客户端,服务器说:"+info);
      }   
  }catch(IOException e){
      e.printStackTrace();
  }finally{
      socket.close();
  }
  

  }
  }

Answer 1

你的客户端里写着“while(info!=null)”就一直打印，而 info 确实不是 null，条件一直成立。