Servlet生命周期

 1 class Demo extends HttpServlet {
 2 
 3     //get请求访问
 4     @Override
 5     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
 6         System.out.println(" invoke get method ");
 7     }
 8 
 9     //post请求访问
10     @Override
11     protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
12         System.out.println(" invoke post method ");
13     }
14 
15     /**
16      * Servlet生命周期init、service、destroy
17      */
18     //初始化
19     @Override
20     public void init() throws ServletException {
21         System.out.println(" invoke init method ");
22         super.init();
23     }
24     
25     //服务
26     @Override
27     protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
28         System.out.println(" invoke service method ");
29         super.service(req, resp);
30     }
31     
32     //销毁
33     @Override
34     public void destroy() {
35         System.out.println(" invoke destroy method ");
36         super.destroy();
37     }
38 }