Java服務器多線程

Question

如何在Java中實現多線程服務器？服務器偵聽端口（例如5000）並在單獨的線程中提供連接，並持續監聽更多客戶端。

Answer 1

下面是一個典型的例子：

ServerSocket ss = new ServerSocket(port); 
ExecutorService executor = Executors.newCachedThreadPool(); 

while(true) 
{ 
    Socket s = ss.accept(); 
    Runnable r = new TaskImplementsRunnable(s); 
    executor.submit(r) 
} 

public class TaskImplementsRunnable implements Runnable 
{ 
    private Socket socket; 

    public TaskImplementsRunnable(Socket socket) 
    { 
     this.socket = socket; 
    } 

    @Override 
    public void run() 
    { 
     try 
     { 
      PrintWriter writer = new PrintWriter(socket.getOutputStream(), true); 
      BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream())); 

      String command; 
      while((command = reader.readLine()) != null) 
      { 
       if(command.equalsIgnoreCase("command 1")) 
       { 
        writer.println("This is command 1!"); 
       } 
       else if(command.equalsIgnoreCase("command 2")) 
       { 
        writer.println("This is command 2!"); 
       } 
       else if(command.equalsIgnoreCase("exit")) 
       { 
        break; 
       } 
       else 
       { 
        writer.println("This is unknown command!"); 
       } 
      } 
     } 
     catch(IOException e) 
     { 
      e.printStackTrace(); 
     } 

     try 
     { 
      writer.close(); 
      reader.close(); 
     } 
     catch(IOException e){} 
    } 
}