Class ManyHandlers


  • public class ManyHandlers
    extends java.lang.Object
    Frequently many handlers are combined together to handle different aspects of a request. A handler may:
    • handle the request and completely generate the response
    • partially handle the request, but defer response generation to another handler.
    • select another handler to pass the request to.
    • use business logic to decide to do one of the above.
    Multiple handlers may be combined with:
    • HandlerWrapper which will nest one handler inside another. In this example, the HelloHandler is nested inside a HandlerWrapper that sets the greeting as a request attribute.
    • HandlerList which will call a collection of handlers until the request is marked as handled. In this example, a list is used to combine the param handler (which only handles the request if there are parameters) and the wrapper handler. Frequently handler lists are terminated with the DefaultHandler, which will generate a suitable 404 response if the request has not been handled.
    • HandlerCollection which will call each handler regardless if the request has been handled or not. Typically this is used to always pass a request to the logging handler.
    • Constructor Summary

      Constructors 
      Constructor Description
      ManyHandlers()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void main​(java.lang.String[] args)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • ManyHandlers

        public ManyHandlers()
    • Method Detail

      • main

        public static void main​(java.lang.String[] args)
                         throws java.lang.Exception
        Throws:
        java.lang.Exception