• 首先简单理解Spring容器和SpringMVC的关系
    • web.xml中spring的核心ContextLoaderListener初始化的上下文和springmvc的核心DispatcherServlet初始化的上下文关系:IDEA——SSM配置笔记(附带Illegal access: this web application instance has been stopped already. Could not load [].解决方案)

       

    • Spring容器和SpringMVC容器虽然是父容器与子容器的关系,但二者之间具有一定的独立性。具体来说,两个容器基于各自的配置文件分别进行初始化,只有在子容器找不到对应的Bean时,才回去父容器中去找并加载。
    • 此外,一般地,SpringMVC容器只管理Controller,剩下的Service、Repository 和 Component 由Spring容器去管理,不建议两个容器上在管理Bean上发生交叉。

 

  2. 环境搭建

               IDEA——SSM配置笔记(附带Illegal access: this web application instance has been stopped already. Could not load [].解决方案)

IDEA——SSM配置笔记(附带Illegal access: this web application instance has been stopped already. Could not load [].解决方案)

IDEA——SSM配置笔记(附带Illegal access: this web application instance has been stopped already. Could not load [].解决方案)IDEA——SSM配置笔记(附带Illegal access: this web application instance has been stopped already. Could not load [].解决方案)

                工程目录如下:

IDEA——SSM配置笔记(附带Illegal access: this web application instance has been stopped already. Could not load [].解决方案)

 

    然后就是部署Tomcat的web运行环境,注意web.xml,applicationContext.xml,spring-mvc.xml中关于路径的配置都是相对于classpath或WEB-INF配置的,因为实际生产环境中可能只有项目运行代码,并没有源文件,运行时需要到web项目下加载文件。

        •  web.xml
           1 <?xml version="1.0" encoding="UTF-8"?>
           2 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
           3          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           4          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
           5          version="4.0">
           6 
           7     <welcome-file-list>
           8         <welcome-file>index.jsp</welcome-file>
           9     </welcome-file-list>
          10 
          11     <!--    用于加载Spring      -->
          12     <listener>
          13         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
          14     </listener>
          15     <listener>
          16         <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
          17     </listener>
          18 
          19     <!--    配置applicationContext.xml文件位置    -->
          20     <context-param>
          21         <param-name>contextConfigLocation</param-name>
          22         <param-value>classpath:config/spring/applicationContext.xml</param-value>
          23     </context-param>
          24 
          25     <!--    加载log4j2    -->
          26     <listener>
          27         <listener-class>org.apache.logging.log4j.web.Log4jServletContextListener</listener-class>
          28     </listener>
          29 
          30     <!--    配置log4j2.xml文件位置    -->
          31     <context-param>
          32         <param-name>log4jConfiguration</param-name>
          33         <param-value>classpath:config/log/log4j2.xml</param-value>
          34     </context-param>
          35 
          36     <filter>
          37         <filter-name>encodingFilter</filter-name>
          38         <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
          39         <init-param>
          40             <param-name>encoding</param-name>
          41             <param-value>UTF-8</param-value>
          42         </init-param>
          43         <init-param>
          44             <param-name>forceEncoding</param-name>
          45             <param-value>true</param-value>
          46         </init-param>
          47     </filter>
          48     <filter-mapping>
          49         <filter-name>encodingFilter</filter-name>
          50         <url-pattern>/*</url-pattern>
          51     </filter-mapping>
          52 
          53     <!--    前端控制器配置     -->
          54     <servlet>
          55         <servlet-name>dispatcher</servlet-name>
          56         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
          57         <init-param>
          58             <param-name>contextConfigLocation</param-name>
          59             <param-value>classpath:config/spring/spring-mvc.xml</param-value>
          60         </init-param>
          61         <load-on-startup>1</load-on-startup>
          62     </servlet>
          63     <servlet-mapping>
          64         <servlet-name>dispatcher</servlet-name>
          65         <url-pattern>/</url-pattern>
          66     </servlet-mapping>
          67 
          68     <!--    配置session过期时间(以分为单位)    -->
          69     <session-config>
          70         <session-timeout>30</session-timeout>
          71     </session-config>
          72 </web-app>
          View Code

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