jsp頁面轉發到servlet

時間 2019-12-10

標籤 jsp 頁面轉發 servlet 欄目 JSP 简体版

原文原文鏈接

一個簡單的例子來了解一下jsp頁面轉發到servlet的過程，環境 eclipse、tomcathtml

1.工程目錄結構以下java

2.各部分代碼以下web

1>index.jsptomcat

 1 <%@ page language="java" contentType="text/html; charset=utf-8"
 2     pageEncoding="utf-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 7 <title>首頁</title>
 8 </head>
 9 <body>
10  <a href = "ForwardServlet">ForwardServlet</a><br>
11  <a href = "MyServlet">MyServlet</a>
12 </body>
13 </html>

2>web.xml服務器

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
 <servlet>
    <servlet-name>ForwardServlet</servlet-name>
    <servlet-class>com.scd.servlet.ForwardServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>ForwardServlet</servlet-name>
    <url-pattern>/ForwardServlet</url-pattern>
</servlet-mapping>
  
  <servlet>
      <servlet-name>MyServlet</servlet-name>
      <servlet-class>com.scd.servlet.MyServlet</servlet-class>
  </servlet>
  <servlet-mapping>
      <servlet-name>MyServlet</servlet-name>
      <url-pattern>/MyServlet</url-pattern>
  </servlet-mapping>
</web-app>

3>ForwardServlet.javaapp

 1 package com.scd.servlet;
 2 
 3 import java.io.IOException;
 4 import javax.servlet.ServletException;
 5 import javax.servlet.annotation.WebServlet;
 6 import javax.servlet.http.HttpServlet;
 7 import javax.servlet.http.HttpServletRequest;
 8 import javax.servlet.http.HttpServletResponse;
 9 
10 /**
11  * Servlet implementation class ForwardServlet
12  */
13 //@WebServlet("/ForwardServlet")
14 public class ForwardServlet extends HttpServlet {
15     private static final long serialVersionUID = 1L;
16        
17     /**
18      * @see HttpServlet#HttpServlet()
19      */
20     public ForwardServlet() {
21         super();
22         // TODO Auto-generated constructor stub
23     }
24 
25     /**
26      * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
27      */
28     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
29         // TODO Auto-generated method stub
30         System.out.println("My First Servlet!");
31     }
32 
33     /**
34      * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
35      */
36     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
37         // TODO Auto-generated method stub
38         
39     }
40 
41 }