TCP协议传输运用

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.Socket;

//需求：客户端键盘录入，服务器输出到控制台
//客户端
public class ClientDemo {
public static void main(String[] args) throws IOException {
    // 创建客户端Socket对象
    Socket s = new Socket("117.64.225.33",10086);
    // 键盘录入数据
    BufferedReader bufr = new BufferedReader(new InputStreamReader(System.in));
    // 把通道内的流给包装一下
    BufferedWriter bufw = new BufferedWriter
            (new OutputStreamWriter(s.getOutputStream()));
    String line = null;
    while((line = bufr.readLine())!=null){
        // 键盘录入数据要自定义结束标记
        if("886".equals(line)){
            break;
        }
        bufw.write(line);
        bufw.newLine();//用高效流一定记得换行
        bufw.flush();
    }
    // 释放资源
    //bufw最终关闭的是s.getOutputStream()流，只要s关闭了这个流就不存在了，所以bufw不必关闭
    //bufw.close();
    //定义了键盘录入结束，此流也不必关闭
    //bufr.close();
    s.close();
}}


//服务器端
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
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(10086);
    // 监听客户端连接
    Socket s = ss.accept();
    // 封装装通道内容的流
    BufferedReader bufr = new BufferedReader
            (new InputStreamReader(s.getInputStream()));
    String line = null;
    while((line = bufr.readLine())!=null){
        System.out.println(line);
    }
    s.close();
}}