java socket客户端连接服务端简单示例

本例只做简单功能演示，代码并不严谨，只是说明客户端如何实现连接服务端简单代码。

代码在集成Eclipse工具下测试编译运行环境如下图所示：

 

客户端echoClient.java代码：

package com.zhengzz.echo;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

class EchoC{
    
    private Socket socket;
    
    public EchoC() {
        // TODO Auto-generated constructor stub
        try {
            socket = new Socket("localhost", 60000);
        } catch (UnknownHostException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    public void Client() {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
            PrintWriter pw = new PrintWriter(socket.getOutputStream(), true);
            BufferedReader lbr = new BufferedReader(new InputStreamReader(System.in));
            
            String linestr = null;
            while ((linestr = lbr.readLine()) != null) {
                
                pw.println(linestr);
                
                System.out.println(br.readLine());
                
                if (linestr.equals("bye#")) {
                    break;
                }
            }
            
            
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

public class echoClient {

    public static void main(String[] args) {
        new EchoC().Client();
    }

}

服务端echoServer.java代码：

package com.zhengzz.echo;

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

class EchoS{
    
    private ServerSocket serverSocket;
    
    public EchoS() {
        
        try {
            serverSocket = new ServerSocket(60000);
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }
    
    public void Server() {
        while (true) {
            try {
                Socket socket = serverSocket.accept();
                
                System.out.println("client:" + socket.getInetAddress() + ":" + socket.getLocalPort());

                BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                PrintWriter pw = new PrintWriter(socket.getOutputStream(), true);

                String linestr;

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

                    System.out.println(linestr);

                    pw.println("--->" + linestr);

                }
            } catch (IOException e) {
                System.out.println("连接断开：（");
            }

        }
}
}

public class echoServer {

    public static void main(String[] args) {
        new EchoS().Server();
    }

}

我在Eclipse工具下直接调试结果如下：