一个简单的SpringMVC程序

2019-11-06 06:27:17

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做 java Web 开发的你，一定听说过SPRingMVC的大名，作为现在运用最广泛的Java框架，它到目前为止依然保持着强大的活力和广泛的用户群。

本文介绍如何用eclipse一步一步搭建SpringMVC的最小系统，所谓最小系统，就是足以使项目在SpringMVC框架下成功跑起来，并且能够做一些简单的事情（比如访问页面）的系统。项目目录

jar包所需要的jar包下面直接给出配置及源码

applicationContext.xml配置

dispatcher-servlet.xml文件配置

<?xml version="1.0" encoding="UTF-8" ?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd ">  <mvc:annotation-driven></mvc:annotation-driven>  <context:component-scan base-package="com.springmvc.*"></context:component-scan>  <mvc:resources location="/resources/" mapping="/resources/**"></mvc:resources>  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  <property name="prefix" value="/WEB-INF/pages/"></property>  <property name="suffix" value=".jsp"></property> </bean>  </beans>

web.xml文件配置

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">  <display-name>SpringMVC_First</display-name>  <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <listener> <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class> </listener>  <filter> <filter-name>encoding</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>  <servlet> <servlet-name>SpringMVC_First</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>namespace</param-name> <param-value>dispatcher-servlet</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>SpringMVC_First</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list></web-app>

index.jsp源码

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><html> <head> <meta charset="UTF-8" /> </head> <style> body { background:url(${contextPath}/resources/img/bg.jpg); background-size : 80% 80%; } </style> <body> This is my JSP page. <br> <br/><br/> 辰小狼睡不醒------------^_^ <br/><br/> </body></html>

ViewController.java源码

package com.springmvc.controller;import javax.servlet.http.HttpServletRequest;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;/** * @author :辰 * E-mail: 15538323378@163.com * 创建时间：2017-3-6 下午5:34:24 * */@Controllerpublic class ViewController { @RequestMapping("/view") public ModelAndView view(HttpServletRequest request){ String path = request.getParameter("path")+""; ModelAndView mav =new ModelAndView(); String contextPath = request.getContextPath(); mav.addObject("contextPath", contextPath); mav.setViewName(path); return mav; }}

在浏览器中输入http://localhost:8080/SpringMVC_First/view?path=index 就可以显示index.jsp 源码以及背景图一张可爱的图