SocketServer在java服务器和php客户端之间的通信

Question

我想在Java中的SocketServer（服务器）和php中的Socket（客户端）之间建立通信。 客户端能够连接到主机，客户端能够发送消息并且服务器成功读取消息。但问题出现时，套接字服务器写入客户端，客户端不接收来自服务器的消息。

我已经读过关于同一场景（java-php套接字通信）的其他问题，但我似乎无法找到导致问题的原因。

如果我使用Java Socket作为客户端，那么通信在两种方式中都可以完美地工作。

服务器：

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

public class Server { 

    protected ServerSocket socket; 
    protected final int port = 9005; 
    protected Socket connection; 
    protected String command = new String(); 
    protected String responseString = new String(); 

    public void init(){ 

     System.out.println("Launching Server: "); 
     try{ 
      socket = new ServerSocket(port); 


      while(true) 
      { 
       // open socket 
       connection = socket.accept(); 
       System.out.println("Client Connected "); 

       // get input reader 
       InputStreamReader inputStream = new InputStreamReader(connection.getInputStream()); 
       BufferedReader input = new BufferedReader(inputStream); 

       // get input 
       command = input.readLine(); 

       // process input 
       System.out.println("Command: " + command); 
       responseString = command + " MC2 It Works!"; 

       // get output handler 
       PrintStream response = new PrintStream(connection.getOutputStream()); 

       // send response 
       response.println(responseString); 
      } 
     } 
     catch (IOException e){ 
      e.printStackTrace(); 
     } 
    } 
} 

客户：

class Client { 

    private $address; 
    private $port; 

    public function __construct($address, $port){ 
     $this->address = $address; 
     $this->port = $port; 
     $this->init(); 
    } 

    private function init(){ 

     //create socket 
     if(! $socket = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp'))){ 
      $this->showError("socket create"); 
     }; 

     //establish connection 
     socket_connect($socket, $this->address, $this->port); 

     //write to server 
     $message = "I am a client"; 
     socket_write($socket, $message, strlen($message)); //Send data 

     echo "Listening to Server\n"; 

     //read from server 
     if(!$reponse = socket_read($socket, 2048, PHP_NORMAL_READ)){ 
      $this->showError("socket read"); 
     } 

     //print response 
     echo "Response from server------------------\n"; 
     echo $reponse; 

     socket_close($socket); 

    } 

    private function showError($message){ 
     echo ("Error: ".$message); 
     exit(666); 

    } 

} 

$address="localhost";$port=9005; 
echo "Testing Client Server\n"; 
$client = new Client($address, $port); 

可能有人请指引我可能是什么问题就在这里？

Answer 1

在服务器端，代码期望一个线路（换行终止），在PHP你送

socket_write($socket, $message, strlen($message)); 

请检查你相应地发送并确保您发送的换行字符的数据。