一个简单的SpringMVC需要哪些jar包 Spring4
有一次在做项目的时候，我把spring-framework-4.2.3.RELEASE下libs文件下的所有jar包都丢进去了，后来浩哥看了说这怎么行？
今天整理一下一个用springMVC写得helloworld需要依赖哪些包
我们配置一个springMVC的时候
首先是配置web.xml
将请求交给spring的DispatcherServlet处理
代码如下
<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_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>springmvctestdisplay-name> <filter> <filter-name>charsetEncodingfilter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class> <init-param> <param-name>encodingparam-name> <param-value>UTF-8param-value> init-param> <init-param> <param-name>forceEncodingparam-name> <param-value>trueparam-value> init-param> filter> <filter-mapping> <filter-name>charsetEncodingfilter-name> <url-pattern>/*url-pattern> filter-mapping> <servlet> <servlet-name>springmvcservlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class> <load-on-startup>1load-on-startup> servlet> <servlet-mapping> <servlet-name>springmvcservlet-name> <url-pattern>/url-pattern> servlet-mapping>web-app>
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其次配置springmvc-servlet.xml
<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:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.2.xsd"> <context:component-scan base-package="com.test.controller" > <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> context:component-scan> <mvc:view-controller path="/" view-name="index"/> <mvc:annotation-driven /> <mvc:resources location="/assets/" mapping="/assets/**">mvc:resources> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/pages/"/> <property name="suffix" value=".jsp"/> bean>beans>
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根据DispatcherServlet的完整路径来看，我们需要加入
spring-web-4.x.x.RELEASE.jar
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接着启动服务查看报错并加入相关的jar
错误如下：
java.lang.NoClassDefFoundError: org/springframework/beans/factory/BeanNameAware
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根据错误加入
spring-beans-4.x.x.RELEASE.jar
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接着报错
java.lang.NoClassDefFoundError: org/springframework/context/EnvironmentAware
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继续加入
spring-context-4.x.x.RELEASE.jar
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接着报错
java.lang.NoClassDefFoundError: org/springframework/core/env/Environment
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继续加人
spring-core-4.x.x.RELEASE.jar
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接着报错
org/apache/commons/logging/LogFactory
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继续加入
commons-logging-1.1.3.jar
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接着报错
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
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嗯？这个错是说找不到DispatcherServlet吗，可是在刚开始都已经将
spring-web-4.x.x.RELEASE.jar
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加入了吗？
原来DispatcherServlet虽然前缀是org.springframework.web.servlet可是它并不在spring-web-4.x.x.RELEASE.jar中
它在
spring-webmvc-4.x.x.RELEASE.jar
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中，好，将其加入
接着报错
java.lang.NoClassDefFoundError: org/springframework/aop/TargetSource
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引入
spring-aop-4.x.x.RELEASE.jar
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接着报错
java.lang.NoClassDefFoundError: org/springframework/expression/ParserContext
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引入
spring-expression-4.x.x.RELEASE.jar
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到这里已经不报错了
然后开发Controller
写一个helloworld
package com.test.controller;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;@Controller@RequestMapping(value="/hello")public class HelloController { @RequestMapping(value="/world",method=RequestMethod.GET) public String hello(Model model){ model.addAttribute("msg", "你好spring mvc"); return "index"; }}
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最后开发展示层
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>hellotitle>head><body><h1>Hello Springh1>${msg }body>html>
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好了打开浏览器访问
http://localhost:8080/springmvctest/hello/world.html
一个简单的helloworld完成
最后的最后贴上项目结构和jar包的结构还有下载jar包的地址
我的Dynamic Web Module 是3.0的
项目结构
jar包下载地址
推荐使用Maven中央仓库，当然这个项目也可以建成一个maven项目
Maven中央仓库地址
http://mvnrepository.com/