为什么这个套接字数据只发送一次到Java服务器？

Question

我只是想要一个程序网络游戏，它需要客户端之间的通信启动…服务器是的…客户端给我卡片…（服务器不响应此代码，如果我必须始终创建新的套接字，我将如何获得相同的地址…localhost只是为了测试目的）套接字只运行一次，我不明白为什么？？？？？？？？

我在服务器上监听，虽然为真，但它只得到一个字符串，在下一次尝试中没有得到任何东西....

服务器只是在听和读

package client;     

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

public class Client {                        

    Client() {                         
        try {
        Socket socket = new Socket("localhost",2222);
        int i=0;
        while(i<100){
            i++;
            OutputStream os = socket.getOutputStream();
            PrintWriter pw = new PrintWriter(os,true);
            pw.println(i);
        }                          
        } catch(IOException e){
            System.out.println("Client Constructor Exception");
        }
    }

    public static void main(String[] args) throws Exception{
        Client client = new Client();
    }
}

服务器的代码是.....请帮助我

package server;

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

public class Server {

    Server() {
        try{
            serverSocket = new ServerSocket(2222);
        } catch(IOException e) {
            System.out.println("IOException in Server Constructor");
        }
    }

    public void operate() {
        try{
 //           Control control = new Control();
            while (true) {
                socket = serverSocket.accept();
                InputStream is = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(is);
                BufferedReader br = new BufferedReader(isr);
               System.out.println(br.readLine());
                //control.recieve(socket, br.readLine());
            }
        } catch(IOException e) {
            System.out.println("IOException in Server operate function");
        }
    }

    public Socket getSocket() {
        return socket;
    }

    public static void main(String[] args) throws IOException {
        Server server = new Server();
        server.operate();
    }

    private ServerSocket serverSocket;
    private Socket socket;
}

输出是:

运行:开始

为什么它不能运行100次。。。。。

Answer 1

Socket socket = new Socket("localhost",2222);  
OutputStream os=null;   
PrintWriter pw=null;     

while(true){                                   
    os = socket.getOutputStream();                   
    pw = new PrintWriter(os,true);                     
    pw.println("Start");                       
}          

Answer 2

在服务器代码中，您必须将server.accept()移出循环。试试这个。会有用的。除此之外，我还尝试了服务器的即时回复。

服务器代码。

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

public class Server {
    private ServerSocket serverSocket;
    private Socket socket;

    Server() {
        try {
            serverSocket = new ServerSocket(2222);
        } catch (IOException e) {
            System.out.println("IOException in Server Constructor");
        }
    }

    public void operate() {
        try {
            // Control control = new Control();
            socket = serverSocket.accept();
            while (true) {
                System.out.println("Server starts listening on "
                        + serverSocket.getLocalPort());

                System.out.println("Server accepts connection.");

                OutputStream os = socket.getOutputStream();
                PrintWriter pw = new PrintWriter(os, true);
                pw.println("Hi Client");

//              Thread.sleep(1000);
                InputStream is = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(is);
                BufferedReader br = new BufferedReader(isr);
                System.out.println(br.readLine());
                System.out.println("reply sent to client");
                // control.recieve(socket, br.readLine());
            }
        } catch (IOException /*| InterruptedException*/ e) {
            System.out.println("IOException in Server operate function");
        }
    }

    public Socket getSocket() {
        return socket;
    }

    public static void main(String[] args) throws IOException {
        Server server = new Server();
        server.operate();
    }

}

客户代码:

package com.java.examples;

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.Socket;

public class Client {
    Client() {
        try {
            Socket socket;
             socket = new Socket("localhost",2222);

            // InputStream in = socket.getInputStream();
            while (true) {
//              socket = new Socket("localhost", 2222);
                System.out.println("Socket - " + socket.getLocalPort());
                OutputStream os = socket.getOutputStream();
                InputStream is = socket.getInputStream();
                PrintWriter pw = new PrintWriter(os, true);
                pw.println("Hi Server");
//              Thread.sleep(2000);
                InputStreamReader isr = new InputStreamReader(is);
                BufferedReader br = new BufferedReader(isr);
                System.out.println("Waiting for server reply..");
                System.out.println(br.readLine());
                System.out.println("Got reply from server..");
                // pw.flush();
            }
        } catch (IOException/* | /*InterruptedException*/ e) {
            e.printStackTrace();
            System.out.println("Client Constructor Exception");
        }
    }

    public static void main(String[] args) throws Exception {
        Client client = new Client();
    }

}

Answer 3

每次在循环中创建一个新套接字，您都想获得

socket = new Socket("localhost",2222); 

在无限循环之外