Java_QQ_源程序代码

2010-06-23 20:24:11 TiBack

import .*;

import java.io.*;

import java.sql.*;

import java.util.*;

public class QQServer {

public static void main(String args[]) {

try {

//用户名同步(14)

HashMap hm = new HashMap() ;

// 服务器在8000端口监听(1)

ServerSocket ss = new ServerSocket(8000);

while (true) {

"服务器正在8000端口监听.....");

Socket s = ss.accept();

MyService t = new MyService();

t.setSocket(s);

t.setHashMap(hm) ;

t.start();

}

} catch (Exception e) {

}

}

}

// 支持多用户登陆(13)

class MyService extends Thread {

private Socket s;

private HashMap hm ;

public void setHashMap(HashMap hm) {

this.hm = hm ;

}

public void setSocket(Socket s) {

this.s = s;

}

public void run() {

try {

// 接收客户端发送来的用户名和密码(2)

InputStream is = s.getInputStream();

InputStreamRead er isr = new InputStreamRead er(is);

BufferedReader br = new BufferedRead er(isr);

String uandp = br.readLine();

// 拆分(4)

String u = uandp.split("%")[0];

String p = uandp.split("%")[1];

// 到数据库中验证(5)

Class.forName("");

Connection cn = DriverManager.getConnection(

"jdbc:;databasename=wy", "sa",

"123");

PreparedStatement ps = cn

.prepareStatement("select * from username where username=? and password=?"); ps.setString(1, u);

ps.setString(2, p);

ResultSet rs = ps.executeQuery();

// 发送确认信息回客户端(7)

OutputStream os = s.getOutputStream();

OutputStreamWriter osw = new OutputStreamWriter(os);

PrintWriter pw = new PrintWriter(osw, true);

if (rs.next()) {

pw.println("ok");

Thread.sleep(10) ;

//将自己的名字发送给其他人(17)

for(Socket ts : hm.values()){

OutputStream tos = ts.getOutputStream() ;

OutputStreamWriter tosw = new OutputStreamWriter(tos) ;

PrintWriter tpw = new PrintWriter(tosw , true) ;

tpw.println("user%"+u) ;

}

//将其他人的名字发送给自己(18)

for(String tu : hm.keySet()){

pw.println("user%"+tu) ;

}

//将用户名和Socket存入HashMap(15)

hm.put(u, s) ;

// 接收客户端发送来的信息(11)

while (true) {

String message = br.readLine();

//判断是否退出

if(message.equals("{exit}")){

for(Socket ts : hm.values()){

OutputStream tos = ts.getOutputStream() ; OutputStreamWriter tosw = new OutputStreamWriter(tos) ; PrintWriter tpw = new PrintWriter(tosw , true) ;

tpw.println("exit%"+u) ;

}

hm.remove(u) ;

return ;

}

String to = message.split("%")[0] ;

String mess = message.split("%")[1] ;

Socket ts = hm.get(to) ;

OutputStream tos = ts.getOutputStream() ; OutputStreamWriter tosw = new OutputStreamWriter(tos) ; PrintWriter tpw = new PrintWriter(tosw , true) ;

tpw.println("mess%"+mess) ;

}

} else {

pw.println("err");

}

} catch (Exception e) {

}

}

}