容器启动后初始化工作

package com.test.servlet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;

public class InitServlet extends HttpServlet {
 /**
  * Constructor of the object.
  */
 public InitServlet() {
  super();
 }

 /**
  * Destruction of the servlet. <br>
  */
 public void destroy() {
  super.destroy();
 }

 /**
  * Initialization of the servlet. <br>
  *
  * @throws ServletException if an error occure
  */
 public void init() throws ServletException {

  //to do somthing

} 

}

 

web.xml中需要修改

 <servlet>
  <servlet-name>InitServlet</servlet-name>
  <servlet-class>com.test.servlet.InitServlet</servlet-class>
  <load-on-startup>8</load-on-startup>
 </servlet>