网络编程客户端和服务端的问题 - 黑马程序员技术交流社区

import java.io.*;
import java.net.*;
class LoginClient
{
public static void main(String[] args) throws Exception
{
Socket s = new Socket("192.168.1.100", 10008);
BufferedReader bufr = new BufferedReader(new InputStreamReader(System.in));
PrintWriter out = new PrintWriter(s.getOutputStream());
BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));
for (int x=0; x<3; x++)
{
String line = bufr.readLine();
if(line==null)
break;
out.println(line);
String info = bufIn.readLine();
System.out.println("info:"+info);
if(info.contains("欢迎"))
break;
}
bufr.close();
s.close();
}
}
class UserThread implements Runnable
{
private Socket s;
UserThread(Socket s)
{
this.s = s;
}
public void run()
{
String ip = s.getInetAddress().getHostAddress();
System.out.println(ip+"......connected");
try
{
for (int x=0; x<3; x++)
{
BufferedReader bufIn = new BufferedReader(new InputStreamReader(s.getInputStream()));
String name = bufIn.readLine();
if(name==null)
break;
BufferedReader bufr = new BufferedReader(new FileReader("user.txt"));
PrintWriter out = new PrintWriter(s.getOutputStream(),true);
String line = null;
boolean flag = false;
while ((line=bufr.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+"，尝试登录");
out.println(name+"，用户名不存在");
}
}
s.close();
}
catch (Exception e)
{
throw new RuntimeException(ip+"校验失败");
}
}
}
class LoginServer
{
public static void main(String[] args) throws Exception
{
ServerSocket ss= new ServerSocket(10008);
while (true)
{
Socket s = ss.accept();
new Thread(new UserThread(s)).start();
}
}
}

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