JAVA -------- 创建TCP服务传递数据

最新推荐文章于 2025-09-04 11:49:04 发布

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#java #tcp/ip #服务器

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本文展示了如何使用Java实现TCP协议的客户端和服务器端通信。客户端发送'111222123'到服务器，服务器接收到后回应'服务端已接收'。代码详细展示了Socket、OutputStream、InputStream及其相关类的使用。

话不多说直接上代码，运行的时候先启动服务端，在启动客户端

客户端：

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.net.Socket;
import java.net.UnknownHostException;
import java.nio.channels.WritableByteChannel;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.BevelBorder;

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

        try {

//创建一个客户端socket

            Socket socket = new Socket("localhost",8888);
         
//向服务器端传递信息

            OutputStream ots = socket.getOutputStream();

            PrintWriter pw = new PrintWriter(ots);

            pw.write("111222123");

            pw.flush();

//关闭输出流

            socket.shutdownOutput();

//获取服务器端传递的数据

            InputStream is = socket.getInputStream();

            InputStreamReader isr = new InputStreamReader(is,"UTF-8");

            BufferedReader br = new BufferedReader(isr);

            String info = null;

            while((info=br.readLine())!=null){

                System.out.println("我是客户端，服务器说："+info);

            }

//关闭资源

            br.close();

            isr.close();

            is.close();

            pw.close();

            ots.close();

            socket.close();

        } catch (UnknownHostException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}

服务端：

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

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

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;

public class Tcp_service{
    private BufferedReader reader;
    private ServerSocket serverSocket;
    private Socket socket;
    /**
     * 创建服务端的程序，读取客户端传来的数据
     */
    void getserver(){
        try {
            serverSocket = new ServerSocket(8888);       //实例化服务端socket
            System.out.println("服务器套接字已经创建成功");
            while (true) {
                System.out.println("等待客户机的连接:");
                socket = serverSocket.accept();        //实例化socket对象
                reader = new BufferedReader(new InputStreamReader(socket.getInputStream(),"UTF-8"));   //实例化BufferReader对象
                getClientMessage();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

}

    private void getClientMessage() {
        try {
           String message = null;
            while ((message = reader.readLine())!=null) {
                System.out.println("客户机传来的信息是："+message);
                OutputStreamWriter osw = new OutputStreamWriter(socket.getOutputStream(),"UTF-8");
               // PrintWriter out = new PrintWriter(osw,);
                PrintWriter pw = new PrintWriter(osw,true);
                pw.println("服务端已接收");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        Tcp_service myTcp = new Tcp_service();           //创建本类对象
        myTcp.getserver();
    }
}