FROM:http://www.java2000.net/viewthread.jsp?tid=686
1 服务器端程序，接受连接并处理客户端的请求
ServerApp.java
package
test;
import
java.io.
*
;
import
java.net.
*
;
/**
* 服务器端程序
*
*
@author
luxuan310，修正赵学庆。
*
*/
public
class
ServerApp
{
static
final
int
PORT
=
9000
;
private
ServerSocket serverSocket;
private
Socket socket;
private
BufferedReader netIn;
private
PrintWriter netOut;
public
ServerApp()
throws
IOException
{
serverSocket
=
new
ServerSocket(PORT);
System.out.println(
"
server start
"
);
while
(
true
)
{
//
等待连接
socket
=
serverSocket.accept();
ServerThread st
=
new
ServerThread(socket);
new
Thread(st).start();
}
}
class
ServerThread
implements
Runnable
{
private
Socket socket;
private
int
randomNumber;
private
int
clientGuessNumber;
public
ServerThread(Socket s)
throws
IOException
{
socket
=
s;
netIn
=
new
BufferedReader(
new
InputStreamReader(socket.getInputStream()));
netOut
=
new
PrintWriter(socket.getOutputStream());
}
public
void
run()
{
System.out.println(
"
client
"
+
socket.getInetAddress()
+
"
is connect
"
);
randomNumber
=
(
int
) (Math.random()
*
100
);
System.out.println(
"
random number is:
"
+
randomNumber);
try
{
clientGuessNumber
=
Integer.parseInt(netIn.readLine());
System.out.println(
"
client guess number is:
"
+
clientGuessNumber);
for
(
int
i
=
3
; i
>
0
; i
--
)
{
if
(clientGuessNumber
==
randomNumber)
{
netOut.println(
"
OK,恭喜，猜对了
"
);
ClientApp.finished
=
true
;
}
else
if
(clientGuessNumber
<
randomNumber)
{
netOut.println(
"
您猜的数小了，您还有
"
+
(i
-
1
)
+
"
次机会
"
);
ClientApp.finished
=
false
;
}
else
if
(clientGuessNumber
>
randomNumber)
{
netOut.println(
"
您猜的数大了，您还有
"
+
(i
-
1
)
+
"
次机会
"
);
ClientApp.finished
=
false
;
}
netOut.flush();
if
(
!
ClientApp.finished)
{
clientGuessNumber
=
Integer.parseInt(netIn.readLine());
}
else
{
break
;
}
}
if
(
!
ClientApp.finished)
{
netOut.println(
"
OK,您没有机会了，游戏结束
"
);
}
ClientApp.finished
=
true
;
}
catch
(IOException e)
{
}
finally
{
try
{
netOut.close();
netIn.close();
socket.close();
}
catch
(IOException ee)
{
}
}
}
}
public
static
void
main(String[] args)
throws
IOException
{
new
ServerApp();
}
}
2 客户端程序，发送每次猜的数字
package
test;
import
java.io.
*
;
import
java.net.
*
;
public
class
ClientApp
{
private
Socket socket;
private
BufferedReader netIn;
private
PrintWriter netOut;
private
BufferedReader keyboardIn;
static
Boolean finished
=
false
;
public
ClientApp()
throws
IOException
{
System.out.println(
"
请输入服务器地址，连接本地服务器请输入localhost
"
);
keyboardIn
=
new
BufferedReader(
new
InputStreamReader(System.in));
try
{
if
(keyboardIn.readLine().equalsIgnoreCase(
"
localhost
"
))
{
socket
=
new
Socket(InetAddress.getLocalHost(), ServerApp.PORT);
}
else
{
socket
=
new
Socket(InetAddress.getByName(keyboardIn.readLine()), ServerApp.PORT);
}
netIn
=
new
BufferedReader(
new
InputStreamReader(socket.getInputStream()));
netOut
=
new
PrintWriter(socket.getOutputStream());
}
catch
(UnknownHostException e)
{
System.err.println(
"
连接不到服务器
"
);
System.exit(
-
1
);
}
System.out.println(
"
连接成功
"
);
while
(
!
finished)
{
System.out.println(
"
请输入0－100之间的数字
"
);
netOut.println(keyboardIn.readLine());
netOut.flush();
String str
=
netIn.readLine();
if
(str
==
null
)
{
finished
=
true
;
break
;
}
System.out.println(str);
if
(str.startsWith(
"
OK
"
))
{
finished
=
true</
