SOCKET监听随TOMCAT启动而启动

xiyou

　　SOCKET监听随TOMCAT启动而启动[转载]
支持pool的连接

web.xml
    <!-- Socket服务 start -->
     <context-param>
          <param-name>socketPort</param-name>
          <param-value>2009</param-value>
     </context-param>
     <listener>
          <description>Socket服务随web启动而启动</description>
          <listener-class>org.ljk.socket.listener.ServerSocketListener</listener-class>
     </listener>
      <!-- Socket服务 end -->


public class ServerSocketListener implements ServletContextListener {

     public void contextInitialized(ServletContextEvent event) {

          String part = event.getServletContext().getInitParameter("socketPort");
          String maxConcent="5";
          event.getServletContext().log("++++++++++++++++++++++++++++++++");
          event.getServletContext().log("++++ Socket服务随web启动而启动 ++++");
          event.getServletContext()
                    .log("++++++++++++++++++++++++++++++++" + part);

          new ServerSocketStart(Integer.parseInt(part),Integer.parseInt(maxConcent)).start();
          event.getServletContext().log("++++ Socket服务已经启动完毕 ++++");
          
          
     }

     public void contextDestroyed(ServletContextEvent event) {

     }
}


public class ServerSocketStart extends Thread {
     private int port;
     private int maxConnections;
     public ServerSocketStart(int aListenPort, int maxConnections){
          this.port=aListenPort;
          this.maxConnections=maxConnections;
     }
     public void run() {
          ServerSocketFactory serverSocketFactory=ServerSocketFactory.getDefault();
          try {
               ServerSocket serverSocket=serverSocketFactory.createSocket(port);
               Socket request = null;
               System.out.println("++++++ ServerSocket已经启动 ++++++");
               this.setUpHandlers();
             while(true) {
                 
                  request = serverSocket.accept();
                  System.out.println("++++++ 客户请求成功 ++++++");
                  //接收客户机连接请求
                   PooledConnectionHandler.processRequest(request);
             }
          } catch (IOException e) {
               e.printStackTrace();
          } catch (InstantiationException e) {
               e.printStackTrace();
          }
     }

     
     public void setUpHandlers() {
         for(int i=0; i<maxConnections; i++) {
             PooledConnectionHandler currentHandler = new PooledConnectionHandler();
             System.out.println("++++++ Thread-Handler"+i+"已启动 ++++++");
             new Thread(currentHandler, "Handler " + i).start();
         }
     }
}


public class PooledConnectHandler implements Runnable {

     protected Socket connection;
     @SuppressWarnings("unchecked")
     protected static List pool = new LinkedList();
     public PooledConnectHandler() {}
     public void  handleConnection() {
           System.out.println("客户:"+connection.getInetAddress()+"在时间:"+Calendar.getInstance().getTime().toString()+"访问过!");
         try {
             PrintWriter streamWriter = new PrintWriter(connection.getOutputStream());
             BufferedReader streamReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
             String fileToRead = streamReader.readLine();
             BufferedReader fileReader = new BufferedReader(new FileReader(fileToRead));
             String line = null;
             while((line=fileReader.readLine())!=null)
                 streamWriter.println(line);
             fileReader.close();
             streamWriter.close();
             streamReader.close();
         }
         catch(FileNotFoundException e) {
             e.printStackTrace();
         }
         catch(IOException e) {
            e.printStackTrace();
         }
     }
     public static void processRequest(Socket requestToHandle) {
         synchronized(pool) {
             pool.add(pool.size(), requestToHandle);
             pool.notifyAll();
         }
     }
     public void run() {
         while(true) {
             synchronized(pool) {
                 while(pool.isEmpty()) {
                     try {
                         pool.wait();
                     }
                     catch(InterruptedException e) {
                         e.printStackTrace();
                     }
                 }
                 connection= (Socket)pool.remove(0);
             }
             handleConnection();
         }
     }


}