NIO的超时处理

来源：互联网发布：win7最新激活软件编辑：程序博客网时间：2024/04/30 11:55

NIO的连接数控制以及超时处理可以做如下控制，灵感来自
http://www.google.com/codesearch?hl=zh-CN&q=+non-blocking+timeout+java+show:SIEU4WjAFJg:n2SYG18vWrQ:HpZzeeTpGw4&sa=N&cd=19&ct=rc&cs_p=ftp://apache.mirrors.pair.com/tomcat/tomcat-6/v6.0.10/src/apache-tomcat-6.0.10-src.zip&cs_f=apache-tomcat-6.0.10-src/java/org/apache/catalina/tribes/transport/nio/NioReceiver.java#a0

必须保证socketTimeouts()方法和select()方法是同一个线程调用，否则会发生异常

public static void cancelledKey(SelectionKey key) {
  try {
//            if ( key.interestOps() == 0 ) {
            if ( (key.interestOps() & SelectionKey.OP_READ) !=0 ) {
            key.cancel();
            key.attach(null);
            key.channel().close();
            }
  } catch (Exception e) {
   e.printStackTrace();
  }
}
    protected static void socketTimeouts() {
  try{
   Iterator<SelectionKey> iter = selector.keys().iterator();
   while(iter.hasNext()){
    SelectionKey key = iter.next();
    System.out.println("clear:"+key);
    cancelledKey(key);
   }
  }catch(Exception e2){
   e2.printStackTrace();
  }
    }