BaseServlet方法分发

Posted 2020-08-19 光何

BaseServlet.java

 1 package org.guangsoft.controller;
 2 
 3 import java.io.IOException;
 4 import java.lang.reflect.InvocationTargetException;
 5 import java.lang.reflect.Method;
 6 
 7 import javax.servlet.ServletException;
 8 import javax.servlet.http.HttpServlet;
 9 import javax.servlet.http.HttpServletRequest;
10 import javax.servlet.http.HttpServletResponse;
11 
12 public class BaseServlet extends HttpServlet
13 {
14     /**
15      * 将请求方法到不同的servlet中的不同方法
16      */
17     @Override
18     protected void service(HttpServletRequest request, HttpServletResponse response)
19             throws ServletException, IOException
20     {
21         request.setCharacterEncoding("UTF-8");
22         response.setCharacterEncoding("UTF-8");
23         response.setContentType("text/html; charset=utf-8");
24         try
25         {
26             //获取调用的方法名
27             String option = request.getParameter("option");
28             //获取真实调用的servlet字节码文件
29             Class clazz = this.getClass();
30             //获取调用的方法
31             Method method = clazz.getDeclaredMethod(option, HttpServletRequest.class,HttpServletResponse.class);
32             //执行调用的方法
33             method.invoke(this, request, response);
34         }
35         catch (Exception e)
36         {
37             e.printStackTrace();
38         }
39     }
40 }