Question

我只想要一个程序网络游戏，并且需要进行通信客户启动...... 服务器是...... 客户给我卡片...... （服务器不响应此代码，如果我必须创建总是新的套接字，我将获得相同的地址.... localhost仅用于测试目的）套接字只运行一次，我无法理解为什么?????????

我在服务器上正在收听，但它只有一个字符串，并且在下次尝试时不会得到任何东西......

服务器正在聆听和阅读

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

为什么它没有运行100次.....

Answer 1

每次在循环中创建一个新的套接字，你想得到

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

在无限循环之外

Answer 2

在服务器代码中，您必须在循环外移动server.accept（）。试试这个吧。它会工作。与此同时，我尝试从服务器即时回复。

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

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 4

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");  
  pw.flush();  // to empty the writer buffer                     
}

为什么这个套接字数据只发送一次到Java服务器？

4 个答案: