ssh框架的结构

一個spring2.5+hibernate3.2+struts2.0的組合框架，使用spring的IoC來管理應用的所有bean，包括struts2的action，充分發揮了spring輕量級框架的優勢。 


Java代码 
<?xml version="1.0" encoding="utf-8"?>   <web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">       <display-name>FashionBookShop</display-name>      <context-param>     <param-name>contextConfigLocation</param-name>     <param-value>/WEB-INF/applicationContext.xml</param-value>   </context-param>           <listener>     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>   </listener>         <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>        <filter-mapping>            <filter-name>encodingFilter</filter-name>            <url-pattern>/*</url-pattern>        </filter-mapping>                   <filter>            <filter-name>struts2</filter-name>            <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>        </filter>        <filter-mapping>            <filter-name>struts2</filter-name>            <url-pattern>/*</url-pattern>        </filter-mapping>         <welcome-file-list>           <welcome-file>index.html</welcome-file>           <welcome-file>index.htm</welcome-file>           <welcome-file>index.jsp</welcome-file>           <welcome-file>default.html</welcome-file>           <welcome-file>default.htm</welcome-file>           <welcome-file>default.jsp</welcome-file>       </welcome-file-list>      <resource-ref>           <res-ref-name>jdbc/MyDataSource</res-ref-name>           <res-type>javax.sql.DataSource</res-type>           <res-auth>Container</res-auth>           <res-sharing-scope>Shareable</res-sharing-scope>       </resource-ref>   </web-app>  <?xml version="1.0" encoding="utf-8"?><web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">    <display-name>FashionBookShop</display-name>   <context-param>  <param-name>contextConfigLocation</param-name>  <param-value>/WEB-INF/applicationContext.xml</param-value></context-param>     <listener>  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener>    <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>     <filter-mapping>         <filter-name>encodingFilter</filter-name>         <url-pattern>/*</url-pattern>     </filter-mapping>          <filter>         <filter-name>struts2</filter-name>         <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>     </filter>     <filter-mapping>         <filter-name>struts2</filter-name>         <url-pattern>/*</url-pattern>     </filter-mapping>      <welcome-file-list>        <welcome-file>index.html</welcome-file>        <welcome-file>index.htm</welcome-file>        <welcome-file>index.jsp</welcome-file>        <welcome-file>default.html</welcome-file>        <welcome-file>default.htm</welcome-file>        <welcome-file>default.jsp</welcome-file>    </welcome-file-list>   <resource-ref>        <res-ref-name>jdbc/MyDataSource</res-ref-name>        <res-type>javax.sql.DataSource</res-type>        <res-auth>Container</res-auth>        <res-sharing-scope>Shareable</res-sharing-scope>    </resource-ref></web-app>


在web.xml中使用listener的方式載入spring的web上下文，另外，還載入了struts2的過濾器。 

applicationContext.xml文件如下： 

Java代码 
<?xml version="1.0" encoding="UTF-8"?>   <beans xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"      xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">    <bean id="myDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">       <property name="jndiName" value="java:comp/env/jdbc/MyDataSource"/>     </bean>     <bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">       <property name="dataSource" ref="myDataSource"/>       <property name="mappingResources">         <list>           <value>org/tiantian/pojo/Book.hbm.xml</value>         </list>       </property>       <property name="hibernateProperties">         <value>           hibernate.dialect=org.hibernate.dialect.MySQLDialect         </value>       </property>     </bean>   <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">   <property name="sessionFactory">   <ref bean="mySessionFactory"/>   </property>   </bean>   <bean id="bookDao" class="org.tiantian.dao.impl.BookDAOImpl">   <property name="hibernateTemplate">   <ref bean="hibernateTemplate"/>   </property>   </bean>    <bean id="BookAction" scope="prototype"          class="org.tiantian.struts2.action.BookAction">           <constructor-arg ref="bookDao" />       </bean>   </beans>  <?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"> <bean id="myDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">    <property name="jndiName" value="java:comp/env/jdbc/MyDataSource"/>  </bean><bean id="mySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">    <property name="dataSource" ref="myDataSource"/>    <property name="mappingResources">      <list>        <value>org/tiantian/pojo/Book.hbm.xml</value>      </list>    </property>    <property name="hibernateProperties">      <value>        hibernate.dialect=org.hibernate.dialect.MySQLDialect      </value>    </property>  </bean><bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"><property name="sessionFactory"><ref bean="mySessionFactory"/></property></bean><bean id="bookDao" class="org.tiantian.dao.impl.BookDAOImpl"><property name="hibernateTemplate"><ref bean="hibernateTemplate"/></property></bean> <bean id="BookAction" scope="prototype"        class="org.tiantian.struts2.action.BookAction">        <constructor-arg ref="bookDao" />    </bean></beans>


配置了如下的依賴：sessionFactory->hibernateTemplate->bookDao->BookAction。 

這樣整個框架就配置好了，在jsp中，可以使用下面的代碼獲得WebApplicationContext： 

Java代码 
WebApplicationContext context = WebApplicationContextUtils.    getWebApplicationContext(this.getServletContext());    BookDAOImpl b=(BookDAOImpl)context.getBean("bookDao");  WebApplicationContext context = WebApplicationContextUtils. getWebApplicationContext(this.getServletContext()); BookDAOImpl b=(BookDAOImpl)context.getBean("bookDao");


在servlet或者daoimpl中，可以直接調用bean： 

Java代码 
public void removeProduct(int id) {           Book b = (Book)this.getHibernateTemplate().get(Book.class, id);           this.getHibernateTemplate().delete(b);           // TODO Auto-generated method stub     }