Socket_SimpleExample

SocketServer.java

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 SocketServer {
	static ServerSocket serverSocket;

	public static void main(String[] args) {

		try {
			// 1. 创建一个服务器端的Socket,即SocketServer,指定邦迪的端口，并监听此端口
			serverSocket = new ServerSocket(10086);// 1024-65535的某个端口
		} catch (IOException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}

		try {

			// 2. 调用accept()方法开始监听，等待服务器的连接
			Socket socket = serverSocket.accept();
			// 3. 获取输入流，并读取客户端信息
			InputStream is = socket.getInputStream();
			InputStreamReader isr = new InputStreamReader(is);
			BufferedReader br = new BufferedReader(isr);
			String info = "";
			info = br.readLine();
			while (info != null) {
				System.out.println("我是服务器，客户端说:" + info);
				info = br.readLine();
			}

			socket.shutdownInput();// 关闭输入流
			// 4。 获取输出流，响应客户端的请求
			OutputStream os = socket.getOutputStream();
			PrintWriter pw = new PrintWriter(os);
			pw.write("欢迎您！");
			pw.flush();

			// 5. 关闭资源
			pw.close();
			os.close();
			br.close();
			isr.close();
			is.close();
			socket.close();
			// serverSocket.close();

		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

}

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package ioStream;

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

public class SocketClient {
	public static void main(String[] args) {

		try {
			// 1、创建客户端Socket，指定服务器地址和端口
			Socket socket = new Socket("localhost", 10086);
			// 2、获取输出流，向服务器端发送信息
			OutputStream os = socket.getOutputStream();// 字节输出流
			PrintWriter pw = new PrintWriter(os);// 将输出流包装成打印流
			pw.write("用户名：admin；密码：123");
			pw.flush();
			socket.shutdownOutput();
			// 3、获取输入流，并读取服务器端的响应信息
			InputStream is = socket.getInputStream();
			BufferedReader br = new BufferedReader(new InputStreamReader(is));
			String info = null;
			while ((info = br.readLine()) != null) {
				System.out.println("我是客户端，服务器说：" + info);
			}

			// 4、关闭资源
			br.close();
			is.close();
			pw.close();
			os.close();
			socket.close();
		} catch (Exception e) {
			e.printStackTrace();
		}

	}
}

总结： 1. 先启动server，再启动client。