Java基础知识强化之网络编程笔记07：TCP之服务器给客户端一个反馈案例

 package cn.itcast_07;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerDemo {
public static void main(String[] args) throws IOException {
// 创建服务器Socket对象
ServerSocket ss = new ServerSocket(9999);

// 监听客户端的连接
Socket s = ss.accept(); // 阻塞

// 获取输入流
InputStream is = s.getInputStream();
byte[] bys = new byte[1024];
int len = is.read(bys); // 阻塞
String server = new String(bys, 0, len);
System.out.println("server:" + server);

// 获取输出流
OutputStream os = s.getOutputStream();
os.write("数据已经收到".getBytes());

// 释放资源
s.close();
// ss.close();
}
}

 package cn.itcast_07;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

public class ClientDemo {
public static void main(String[] args) throws IOException {
// 创建客户端Socket对象
Socket s = new Socket("192.168.12.92", 9999);

// 获取输出流
OutputStream os = s.getOutputStream();
os.write("今天天气很好,适合睡觉".getBytes());

// 获取输入流
InputStream is = s.getInputStream();
byte[] bys = new byte[1024];
int len = is.read(bys);// 阻塞
String client = new String(bys, 0, len);
System.out.println("client:" + client);

// 释放资源
s.close();
}
}