客户端登陆问题 - 黑马程序员技术交流社区

import java.net.Socket;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
class LoginClient
{
public static void main(String[] args) throws Exception
{
Socket s = new Socket("172.27.35.1", 10009);
BufferedReader brin = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
for(int i = 0; i < 3; i++)
{
String line = brin.readLine();
if(line == null)
break;
bw.write(line);
bw.newLine();
bw.flush();
String info = br.readLine();
System.out.println(info);
if(info.contains("欢迎"));
break;
}
brin.close();
s.close();
}
}
import java.net.Socket;
import java.net.ServerSocket;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;
class LoginServer
{
public static void main(String[] args) throws Exception
{
ServerSocket ss = new ServerSocket(10009);
while(true)
{
Socket s = ss.accept();
new Thread(new LoginThread(s)).start();
}
}
}
class LoginThread implements Runnable
{
private Socket s;
LoginThread(Socket s)
{
this.s = s;
}
public void run()
{
String ip = s.getInetAddress().getHostAddress();
System.out.println(ip + " 是无名人士的");
try
{
for(int i = 0; i < 3; i++)
{
BufferedReader brin = new BufferedReader(new InputStreamReader(s.getInputStream()));
String name = brin.readLine();
if(name == null)
break;
BufferedReader br = new BufferedReader(new FileReader("zhang.txt"));
PrintWriter ps = new PrintWriter(s.getOutputStream(), true);
String line = null;
Boolean flag = false;
while((line = br.readLine()) != null)
{
if(line.equals(name))
{
flag = true;
break;
}
}
if(flag)
{
System.out.println(name + "已登录");
ps.println(name + "欢迎光临");
break;
}
else
{
System.out.println(name + "尝试登陆");
ps.println(name + "不存在");
}
}
s.close();
}
catch (Exception e)
{
throw new RuntimeException("登陆失败");
}
}
}

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