springMVC入门案例

1、配置文件的web.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <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">
 3   <display-name>springmvc1</display-name>
 4
 5   <servlet>
 6   <servlet-name>springmvc</servlet-name>
 7   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 8   <!-- 默认加载方式必须规范：
 9          * 文件命名：servlet-name-servlet.xml====springmvc-servlet.xml
10          * 路径规范：必须在WEB-INF目录下面 -->
11    <init-param>
12    <param-name>contextConfigLocation</param-name>
13    <param-value>classpath:springmvc.xml</param-value>
14    </init-param>
15   </servlet>
16
17   <servlet-mapping>
18   <servlet-name>springmvc</servlet-name>
19   <url-pattern>*.do</url-pattern>
20   </servlet-mapping>
21
22   <welcome-file-list>
23     <welcome-file>index.html</welcome-file>
24     <welcome-file>index.htm</welcome-file>
25     <welcome-file>index.jsp</welcome-file>
26     <welcome-file>default.html</welcome-file>
27     <welcome-file>default.htm</welcome-file>
28     <welcome-file>default.jsp</welcome-file>
29   </welcome-file-list>
30 </web-app>

2、springMVC.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4     xmlns:mvc="http://www.springframework.org/schema/mvc"
 5     xmlns:context="http://www.springframework.org/schema/context"
 6     xmlns:aop="http://www.springframework.org/schema/aop"
 7     xmlns:tx="http://www.springframework.org/schema/tx"
 8     xsi:schemaLocation="http://www.springframework.org/schema/beans
 9         http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
10         http://www.springframework.org/schema/mvc
11         http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
12         http://www.springframework.org/schema/context
13         http://www.springframework.org/schema/context/spring-context-3.2.xsd
14         http://www.springframework.org/schema/aop
15         http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
16         http://www.springframework.org/schema/tx
17         http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
18
19         <!-- 配置处理器映射器,springmvc默认的处理器映射器
20         BeanNameUrlHandlerMapping：根据bean(自定义Controler)的name属性的url去寻找hanler(Action:Controller) -->
21         <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
22
23         <!-- 配置处理器适配器执行Controlelr ,springmvc默认的SimpleControllerHandlerAdapter:执行Controller -->
24         <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>
25
26         <!-- 配置自定义Controler -->
27         <bean id="myController" name="/hello.do" class="com.xiaostudy.MyController"/>
28
29         <!-- 配置sprigmvc视图解析器：解析逻辑试图
30              后台返回逻辑试图：index
31             视图解析器解析出真正物理视图：前缀+逻辑试图+后缀====/WEB-INF/index.jsp -->
32         <!-- <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
33             <property name="prefix" value="/WEB-INF/"/>
34             <property name="suffix" value=".jsp"/>
35         </bean> -->
36 </beans>

3、Controller.java

 1 package com.xiaostudy;
 2
 3 import javax.servlet.http.HttpServletRequest;
 4 import javax.servlet.http.HttpServletResponse;
 5
 6 import org.springframework.web.servlet.ModelAndView;
 7 import org.springframework.web.servlet.mvc.Controller;
 8
 9 public class MyController implements Controller{
10
11     public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
12         //创建视图
13         ModelAndView mv = new ModelAndView();
14
15         //设置页面回显数据
16         mv.addObject("hello", "xiaostudy");
17
18         //返回物理视图,指定跳转的视图
19 //        mv.setViewName("/WEB-INF/index.jsp");
20
21         //返回逻辑视图
22         mv.setViewName("index");
23
24         return mv;
25     }
26
27 }

4、index.jsp

 1 <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
 2 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
 3             "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>springMVC_demo</title>
 8 </head>
 9 <body>
10     ${hello }
11 </body>
12 </html>

5、所需jar包

6、项目文件位置

原文地址：https://www.cnblogs.com/xiaostudy/p/9589313.html