WEB base (two) - servlet life cycle

• Servlet life cycle is generally three methods can be used to represent:
  • init (): only once, it is responsible for initializing Servlet object when loading Servlet
  • service (): Core method, there will be general HttpServlet get, post two approaches. When calling doGet and doPost methods and constructs servletRequest servletResponse request and response objects as parameters.
  • destory (): executed when stopping and uninstall Servlet, responsible for the release of resources
• Focus on talk about Servlet initialization:
  • Servlet class and loading data corresponding .class
  • Creating objects ServletConfig
  • Creating the Servlet objects
• HttpServletRequest and HttpServlceResponse object is calling the service () as a parameter passed when the method.

 

Edited 2019.7.25