【Servlet学习】继承HttpServlet简单示例

 1 package com.sprying;
 2 import java.io.IOException;
 3 import java.io.PrintWriter;
 4 
 5 import javax.servlet.http.HttpServlet;
 6 import javax.servlet.http.HttpServletRequest;
 7 import javax.servlet.http.HttpServletResponse;
 8 
 9 /**
10  *第三种方法开发servlet
11  *通过继承HttpServlet,
12  */
13 public class HttpExample extends HttpServlet
14 {
15      /**
16      * 
17 */
18     private static final long serialVersionUID = 1L;
19     public void doGet(HttpServletRequest req,HttpServletResponse res)
20      {
21          this.doPost(req,res);
22      }
23      public void doPost(HttpServletRequest req,HttpServletResponse res)
24      {
25          try
26          {
27              PrintWriter pw=res.getWriter();
28              pw.print("HelloWorld,extends of HttpServlet");
29          }catch(IOException e)
30          {
31              e.printStackTrace();
32          }
33      }
34 }