谁有socket长连接的例子？

Question

Java code import   java.io.IOException;   
  import   java.net.Socket;   
  import   java.net.ServerSocket;   
  import   com.omn.xmpp.server.util.Logger;   
  public   class   SocketAcceptThread   extends   Thread{   
    
          /**   
            *   默认的监听端口   
            */   
          public   static   final   int   DEFAULT_PORT   =   5222;   
          /**   
            *   代表监听端口   
            */   
          private   int   serverPort;   
          /**   
            *   true表示线程没有停止，继续运行   
            */   
          private   boolean   notTerminated=true;   
          /**   
            *记录对象   
            */   
          private   Logger   log;   
          /**   
            *   监听服务   
            */   
          private   ServerSocket   serverSocket;   
          public   SocketAcceptThread(Logger   l,int   port){   
  init(l,port);   
          }   
          public   SocketAcceptThread(Logger   l){   
          init(l,SocketAcceptThread.DEFAULT_PORT);   
          }   
          /**   
            *   初始化   
            *   @param   l   
            *   @param   port   
            */   
          public   void   init(Logger   l,int   port){   
          this.log=l;   
          this.serverPort=port;   
          try   {   
  this.serverSocket=new   ServerSocket(serverPort);   
  }   catch   (IOException   e)   {   
  log.fatalError("SocketAcceptThread:serversocket初始化失败!!");   
  }   
          }   
          /**   
            *   运行端口监听   一旦监听到进一步处理后继续去监听   
            */   
          public   void   run()   {   
                  try   {   
          while   (notTerminated)   {   
      
                                  Socket   sock   =   serverSocket.accept();   
                                  if   (sock   !=   null)   {   
                                          //这里添加处理   
                                          try{   
                                          System.out.println("SocketAcceptThread:创建了一个connection");   
                                      new   Connection(sock);//创建了connection   
                                          
                                          }catch(IOException   e){   
                                          log.error("SocketAcceptThread:建立连接错误"+e.getMessage());   
                                          }   
                                  }   
                          }   
    
                  }   
                  catch   (IOException   ie)   {   
                          if   (notTerminated)   {   
                                  log.error("SocketAcceptThread:socket建立错误"+ie.getMessage());   
                          }   
                  }   
                  catch   (Exception   e)   {   
                          log.error("SocketAcceptThread:socket监听错误"+e.getStackTrace());   
                  }   
                  try   {//无论如何也要关闭   
                          ServerSocket   sSock   =   serverSocket;   
                          serverSocket   =   null;   
                          if   (sSock   !=   null)   {   
                                  sSock.close();   
                          }   
                  }   
                  catch   (IOException   e)   {   
                          //   关闭不上就不管了   
                  }   
          }   
          /**   
            *   关闭监听.   
            */   
          public   void   shutdown()   {   
                  notTerminated   =   false;   
    
                  try   {   
                          ServerSocket   sSock   =   serverSocket;   
                          serverSocket   =   null;   
                          if   (sSock   !=   null)   {   
                                  sSock.close();   
                          }   
                  }   
                  catch   (IOException   e)   {   
                          //   在关闭不了就不管了   
                  }   
    
          }   
  }