TCP通信练习2---6

客户端:数据来自于键盘录入，直到输入的数据是886，发送数据结束

服务器：接收到的数据在控制台输出

package com.inetTes01;
/*
客户端:数据来自于键盘录入，直到输入的数据是886，发送数据结束
*/


import java.io.*;
import java.net.Socket;

public class ClientDemo01 {
    public static void main(String[] args) throws IOException {
        //创建客户端Socket对象
        Socket s = new Socket("192.168.18.6", 10000);
//        数据来自于键盘录入，直到输入的数据是886，发送数据结束
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        //封装输出流对象
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
        String line;
        while ((line = br.readLine()) != null) {
            if("886".equals(line)) {
                break;
            }
//            //获取输出流对象
//            OutputStream os = s.getOutputStream();
//            os.write(line.getBytes());
            bw.write(line);
            bw.newLine();
            bw.flush();
        }
        //释放资源
        s.close();


    }
}

package com.inetTes01;
/*
服务器：接收到的数据在控制台输出
 */

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerDemo01 {
    public static void main(String[] args) throws IOException {
        //创建服务器Socket对象
        ServerSocket ss = new ServerSocket(10000);
        //监听客户端的连接返回一个对应的Socket对象
            Socket s = ss.accept();

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

            String line;
            while ((line = br.readLine())!= null) {
                System.out.println(line);
            }
        

        //ss.close();

    }
}

 练习3 客户端与练习2相同

服务器端，将接受的数据写入文件

package com.inetTes01;
/*
服务器：接收到的数据写入文本文件
 */

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerDemo02 {
    public static void main(String[] args) throws IOException {
        //创建服务器Socket对象
        ServerSocket ss = new ServerSocket(10002);

        //监听客户端连接，返回对应的Socket对象
        Socket s = ss.accept();

        //获取输入流，读数据
        BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
        //创建输出流对象
        BufferedWriter bw = new BufferedWriter(new FileWriter("IDEA_Test\s.txt"));
        String line;
        while ((line = br.readLine()) != null) {
            bw.write(line);
            bw.newLine();
            bw.flush();
        }

        ss.close();
        bw.close();
        br.close();


    }
}

 练习4.服务器端与练习三相同。

客户端，数据来自于文本文件

package com.inetTes01;

/*
        客户端：数据来自于文本文件
 */

import java.io.*;
import java.net.Socket;

public class ClientDemo02 {
    public static void main(String[] args) throws IOException {
//创建Socket对象
        Socket s = new Socket("192.168.18.6",10003);

        //封装输出流，写数据
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));

        //数据来自于文本文件,读取文本文件，然后写入bw数据
        //封装文本文件的数据
        BufferedReader br = new BufferedReader(new FileReader("IDEA_Test\diamond.txt"));

        String line;
        while((line = br.readLine())!= null) {
            bw.write(line);
            bw.newLine();
            bw.flush();
        }

        s.close();
        br.close();




    }
}

练习5
●客户端: 数据来自于文本文件,接收服务器反馈
●服务器: 接收到的数据写入文本文件,给出反馈
●出现问题: 程序- -直等待
●原因: 读数据的方法是阻塞式的
●解决办法: 自定义结束标记;使用shutdownOutput(方法(推荐)

客户端代码

package com.inetTes01;

/*
        客户端：数据来自于文本文件
 */

import java.io.*;
import java.net.Socket;

public class ClientDemo02 {
    public static void main(String[] args) throws IOException {
        //创建Socket对象
        Socket s = new Socket("192.168.18.6", 10005);

        //封装输出流，写数据
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));

        //数据来自于文本文件,读取文本文件，然后写入bw数据
        //封装文本文件的数据
        BufferedReader br = new BufferedReader(new FileReader("IDEA_Test\diamond.txt"));

        String line;
        while ((line = br.readLine()) != null) {
            bw.write(line);
            bw.newLine();
            bw.flush();
        }
        //自定义结束标记
//        bw.write("886");
//        bw.newLine();
//        bw.flush();
        s.shutdownOutput();

        //接收反馈：相当于读取数据
        BufferedReader bwClient = new BufferedReader(new InputStreamReader(s.getInputStream()));
        String x = bwClient.readLine();
        System.out.println(x);
        s.close();
        br.close();
        bwClient.close();
    }
}

服务器端

package com.inetTes01;
/*
服务器：接收到的数据写入文本文件
 */

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerDemo02 {
    public static void main(String[] args) throws IOException {
        //创建服务器Socket对象
        ServerSocket ss = new ServerSocket(10005);

        //监听客户端连接，返回对应的Socket对象
        Socket s = ss.accept();

        //获取输入流，读数据
        BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
        //创建输出流对象
        BufferedWriter bw = new BufferedWriter(new FileWriter("IDEA_Test\s.txt"));
        String line;
        while ((line = br.readLine()) != null) {

            bw.write(line);
            bw.newLine();
            bw.flush();
        }


        //服务器给出反馈相当于写入数据
        BufferedWriter bwServer = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
        bwServer.write("文件上传成功");
        bwServer.newLine();
        bwServer.flush();



        bwServer.close();
        ss.close();
        bw.close();




    }
}

 

 客户端和练习5一样

服务器如下：

package com.inetTes01;
/*
服务器
。 接收到的数据写入文本文件，给出反馈，代码用线程进行封装，为每一个客户端开启一个线程

 */

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

public class ServerDemo03 {
    public static void main(String[] args) throws IOException {
        //创建服务器Socket对象
        ServerSocket ss = new ServerSocket(10007);

        while (true) {

            ////监听客户端连接，返回一个对应的Socket对象
            Socket s = ss.accept();

            //为每一个客户端开启一个线程
            new Thread(new ServerThread(s)).start();
        }
//        ss.close();    //因为要进行死循环，所以不需要释放资源了


    }
}

线程类如下：

package com.inetTes01;

import java.io.*;
import java.net.Socket;

public class ServerThread implements Runnable {
    private Socket s;

    public ServerThread(Socket s) {
        this.s = s;
    }

    @Override
    public void run() {
        //接收数据写到文本文件
        //封装输入流，读数据 ,封装输出流，写数据到文件上
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(s.getInputStream()));
//            BufferedWriter bw = new BufferedWriter(new FileWriter("IDEA_Test\s.txt"));

            //为了解决接收多次文件的名称冲突问题
            int count = 0;

            File file = new File("IDEA_Test\s" + count + ".txt");
            while (file.exists()) {
                count++;
                file = new File("IDEA_Test\s" + count + ".txt");
            }
            BufferedWriter bw = new BufferedWriter(new FileWriter(file));

            String line;
            while ((line = br.readLine()) != null) {
                bw.write(line);
                bw.newLine();
                bw.flush();
            }
            //给出反馈
            BufferedWriter Serverback = new BufferedWriter(new OutputStreamWriter(s.getOutputStream()));
            Serverback.write("文件上传成功啦");
            Serverback.flush();
            s.close();
            bw.close();


        } catch (IOException e) {
            e.printStackTrace();
        }

//


    }
}