对于S2SH的组合,其实注意几点就可以了:
第一: 由于Struts2的Action是有状态,而Spring中的Bean默认为单例模式的,故一定要将Spring中配置Struts2的Action的scope设置为prototype 。而Struts1中的Action是无状态故在SSH时可以不用将Spring设置为prototype!
第二:Struts2与Spring的组合不像Struts1,它需要一个Struts2中一个struts2-spring-plugin-2.1.6.jar也不需要在struts.xml中加入其它的配置,只需将struts.xml中的action的class的值改成action在Spring中配置的Bean的id 就可以了!
简单的例子如下:
(说明这个例子当中包括Struts2大部分的内容,主要是想体验一下Struts2的功能)
数据库如下:uid,ufristName,ulastName,uage四个字段
一,加入Spring的支持
二,加入Hibernate的支持(Hibernate的配置由Spring去管理)
三,加入Struts2的支持
四,加入Struts2对Spring的插件(struts2-spring-plugin-2.1.6.jar)
在web.xml中加入对Spring和Struts2的配置:
<?xml version="1.0" encoding="UTF-8"?> <web-app 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"> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:applicationContext.xml</param-value> </context-param> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <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.jsp</welcome-file> </welcome-file-list> </web-app>
UsersDAO的接口如下:
public interface UsersDaoInter { public abstract void save(Users transientInstance); public abstract void delete(Users persistentInstance); public abstract void delete(final int uId); public abstract Users findById(java.lang.Integer id); public abstract List findByExample(Users instance); public abstract List findByProperty(String propertyName, Object value); public abstract List findAll(); public abstract Users merge(Users detachedInstance); }
UsersService接口如下:
public interface UsersServiceInter { public abstract void save(Users transientInstance); public abstract void delete(Users persistentInstance); public abstract void delete(final int uId); public abstract Users findById(java.lang.Integer id); public abstract List findByExample(Users instance); public abstract List findByProperty(String propertyName, Object value); public abstract List findAll(); public abstract Users merge(Users detachedInstance); /** * 导出用户列表的Excel * @return */ public abstract InputStream exportUsers(); }
Spring的applicationContext.xml配置如下:
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd "> <!-- 数据源 --> <bean id="MyDataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.microsoft.jdbc.sqlserver.SQLServerDriver"> </property> <property name="url" value="jdbc:microsoft:sqlserver://localhost:1433"> </property> <property name="username" value="sa"></property> </bean> <!-- SessionFactory配置 --> <bean id="MySessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource"> <ref bean="MyDataSource"></ref> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect"> org.hibernate.dialect.SQLServerDialect </prop> </props> </property> <property name="mappingResources"> <list> <value>com/mengya/entity/Users.hbm.xml</value> </list> </property> </bean> <!-- 事务管理器 --> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory"> <ref bean="MySessionFactory"></ref> </property> </bean> <!-- 定义事务的属性 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="merge*" propagation="REQUIRED" /> <tx:method name="*" read-only="false" /> </tx:attributes> </tx:advice> <!-- 使用Spring的AOP管理Hibernate的Transaction --> <aop:config> <!-- 定义AOP切面 --> <aop:pointcut id="allManagerMethod" expression="execution(* com.mengya.service.*.*(..))" /> <!-- 在AOP切面中配置事务 --> <aop:advisor advice-ref="txAdvice" pointcut-ref="allManagerMethod" /> </aop:config> <!-- 如下是DAO,Service,Action的配置 --> <bean id="UsersDAO" class="com.mengya.dao.imple.UsersDAO"> <property name="sessionFactory"> <ref bean="MySessionFactory"></ref> </property> </bean> <bean id="userService" class="com.mengya.service.imple.UsersService"> <property name="usersdao"> <ref bean="UsersDAO"></ref> </property> </bean> <!-- 对于Struts2与Spring集成时,Strtus2的Action是有状态的故这个的scope必须为prototype,Spring默认的是单例模式 --> <bean id="saveUserAction" class="com.mengya.usersAction.SaveUsersAction" scope="prototype"> <property name="usersService"> <ref bean="userService"></ref> </property> </bean> <bean id="listUserAction" class="com.mengya.usersAction.ListUsersAction" scope="prototype"> <property name="userService"> <ref bean="userService"></ref> </property> </bean> <bean id="deleteUserAction" class="com.mengya.usersAction.DeleteUsersAction" scope="prototype"> <property name="usersService"> <ref bean="userService"></ref> </property> </bean> <bean id="updateUserAction" class="com.mengya.usersAction.UpdateUsersAction" scope="prototype"> <property name="userService"> <ref bean="userService"></ref> </property> </bean> <bean id="exportUsersAction" class="com.mengya.usersAction.ExportUsersAction" scope="prototype"> <property name="userService"> <ref bean="userService"></ref> </property> </bean> </beans>
struts.xml配置如下:
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="mengya" extends="struts-default"> <action name="saveUser" class="saveUserAction"> <result name="success" type="redirectAction">listUser.action</result> <result name="input">/add2.jsp</result> </action> <action name="listUser" class="listUserAction"> <result name="success">/userList.jsp</result> </action> <action name="deleteUser" class="deleteUserAction"> <result name="success" type="redirectAction">listUser.action</result> </action> <action name="getUser" class="updateUserAction" method="getUserById"> <result name="success">/view.jsp</result> </action> <action name="updateUser" class="updateUserAction" method="updateUser"> <result name="success" type="redirectAction">listUser.action</result> <result name="input">/view.jsp</result> </action> <!-- 将用户信息用Excel导出 --> <action name="exportUsers" class="exportUsersAction"> <result name="success" type="stream"> <param name="contentType">application/vnd.ms-excel</param> <!-- 对于第一个参数默认值为inline这样的话若在线打开的话会生成两个xls文件 --> <param name="contentDisposition">attachment;filename="allUsers.xls"</param> <param name="inputName">downloadFile</param> </result> </action> </package> </struts>
jsp页面:用户列表 <table border="1" align="center" width="60%"> <tr> <td colspan="6" align="center"> <s:text name="UserListInfo"></s:text> </td> </tr> <tr> <td> <s:text name="UId"></s:text> </td> <td> <s:text name="UFristName"></s:text> </td> <td> <s:text name="ULastName"></s:text> </td> <td> <s:text name="UAge"></s:text> </td> <td> <s:text name="UpdateOperaction"></s:text> </td> <td> <s:text name="DeleteOperaction"></s:text> </td> </tr> <s:iterator value="#request.listUser" var="user"> <tr> <td> <s:property value="#user.uid"/> </td> <td> <s:property value="#user.ufristName"/> </td> <td> <s:property value="#user.ulastName"/> </td> <td> <s:property value="#user.uage"/> </td> <td> <s:a href="getUser.action?users.uid=%{#user.uid }"> <s:text name="UpdateOperaction"></s:text> </s:a> </td> <td> <s:a href="deleteUser.action?uid=%{#user.uid }"> <s:text name="DeleteOperaction"></s:text> </s:a> </td> </tr> </s:iterator> </table> <tr/> <tr/> <tr/> <div align="center"> <s:a href="exportUsers.action">Excel导出</s:a> </div>
用户信息修改页面
<s:form action="updateUser" method="post">
<s:hidden name="users.uid"></s:hidden>
<s:textfield name="users.ufristName" key="UFristName"></s:textfield>
<s:textfield name="users.ulastName" key="ULastName"></s:textfield>
<s:textfield name="users.uage" key="UAge"></s:textfield>
<s:submit key="submit"></s:submit>
</s:form>
由于文件很多,不能全部显示,下面的压缩包是本程序的源码,由于jar很大上传不了,故不包含S2SH的jar包