Socket客户端/服务端简单实例

1、client端

package demo.socket;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientTest {
public static void main(String[] args) {
try{
Socket socket = new Socket("127.0.0.1",8081);
OutputStream os = socket.getOutputStream();
PrintWriter pw = new PrintWriter(os);

// 获取输入流
InputStream is = socket.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));

// 进行写操作
String info = "用户名：Tom，密码：123456";
pw.write(info);
pw.flush();
socket.shutdownOutput();


// 接收服务端响应
String reply = null;
while (!((reply = br.readLine()) == null)) {
System.out.println("我是客户端，服务端响应是：" + reply);
}
// 关闭流
br.close();
is.close();
pw.close();
os.close();
socket.close();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}


}

}

2、server端：

package demo.socket;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerSocketTest {

public static void main(String[] args) {

try {
// 建立一个服务器绑定指定端口Socket(ServerSocket)并开始监听
ServerSocket serverSocket = new ServerSocket(8081);

// 使用accept()方法阻塞等待监听，获得新的连接
Socket socket = serverSocket.accept();

// 获得输入流
InputStream is = socket.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));

// 获得输出流
OutputStream os = socket.getOutputStream();
PrintWriter pw = new PrintWriter(os);

// 读取用户输入信息
String info = null;
while (!((info = br.readLine()) == null)) {
System.out.println("我是服务器，用户信息为：" + info);
}

// 响应信息
String reply = "welcome";
pw.write(reply);
pw.flush();

// 关闭流
pw.close();
os.close();
br.close();
is.close();
socket.close();
serverSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}

}

输出内容：

客户端：我是客户端，服务端响应是：welcome

服务端：我是服务器，用户信息为：用户名：Tom，密码：123456