系统实现规范:以面向接口的方式进行编程。
下图为三层逻辑结构的简易关系图
 

 
以上是简易的系统逻辑结构,***Action继承于xwork的SupportAction,通过Spring来进行管理,在整个Spring的容器中,Spring负责管理整个系统的所有Bean,并负责初始化Bean之间的依赖关系。***Action中注入了服务层对象***ServiceImpl,而ServiceImpl又注入了***DaoImpl对象。下面会逐步细化上面的关系图。
先看下面的web.xml配置
web.xml
    <display-name>Struts Blank</display-name>
    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>wxy.root</param-value>
    </context-param>
    <!-- spring xml文件配置目录在class目录下的spring目录中WEB-INF/classes/spring -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:spring/*.xml</param-value>
    </context-param>
    <!-- 配置log4j的日志信息WEB-INF/classes/config/log4j.properties -->
    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>classpath*:config/log4j.properties</param-value>
    </context-param>
    <!-- 配置Character Encoding Filter -->
    <filter>
        <filter-name>encodingFilter</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>
    <!-- 配置Struts2 -->
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>
    <!-- 载入Spring ApplicationContext -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- Spring 刷新Introspector防止内存泄漏 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>
未完待续.