做tcp并发登录的时候有个问题求教 - 黑马程序员技术交流社区

import java.io.*;
import java.net.*;
class Loadclient
{
public static void main(String[] args) throws Exception
{
Socket s=new Socket("192.168.191.1",10007);
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
PrintWriter out=new PrintWriter(s.getOutputStream(),true);
BufferedReader in=new BufferedReader(new InputStreamReader(s.getInputStream()));
for (int x=0;x<3 ;x++ )
{
String line=br.readLine();
if (line==null)
{
break;
}
out.println(line);
String info=in.readLine();
System.out.println(info);
if (info.contains("欢迎"))
{
break;
}
}
br.close();
s.close();
}
}
class Loadserver
{
public static void main(String[] args)throws Exception
{
ServerSocket ss=new ServerSocket(10007);
while (true)
{
Socket s=ss.accept();
new Thread(new Loaduser(s)).start();
}
}
}
class Loaduser implements Runnable
{
private Socket s;
Loaduser(Socket s)
{
this.s=s;
}
public void run()
{
try
{
for (int x=0;x<3 ;x++ )
{
BufferedReader in=new BufferedReader(new InputStreamReader(s.getInputStream()));
String name=in.readLine();
BufferedReader br=new BufferedReader(new FileReader("Load.txt"));
PrintWriter out=new PrintWriter(s.getOutputStream(),true);
boolean flag=false;
String line=null;
while ((line=br.readLine())!=null)
{
if (line.equals(name))
{
flag=true;
break;
}
}
if (flag)
{
System.out.println(name+"已登录");
out.println(name+"欢迎光临");
break;
}
else
{
System.out.println(name+"尝试登陆");
out.println(name+"该用户不存在");
break;
}
}
s.close();
}
catch (Exception e)
{
throw new RuntimeException("查询失败");
}
}
}

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