标签:plugin 实现 inf struts 相关 show cat efi host
<?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:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"> </beans>
<!-- 数据库连接池的基本配置 --> jdbc.driverClass=com.mysql.jdbc.Driver jdbc.url=jdbc\:mysql\://localhost\:3306/ssh jdbc.username=root jdbc.password=root
<!-- 引入jdbc.properties--> <context:property-placeholder location="classpath:jdbc.properties"/>
<!-- 配置dbcp数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driverClass}"></property> <property name="url" value="${jdbc.url}"></property> <property name="username" value="${jdbc.username}"></property> <property name="password" value="${jdbc.password}"></property> </bean>
<!-- 配置sessionFactory --> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property>
<!-- 配置hibernate.cfg.xml的路径 --> <!-- <property name="configLocations" value="classpath:hibernate.cfg.xml"/> --> <!-- 不使用hibernate.cfg.xml,由spring配置hibernate的属性 --> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> </props> </property>
<!-- 配置.hbm.xml的位置及名称,可以使用通配符 --> <property name="mappingLocations" value="classpath:com/ssh/domain/*.hbm.xml"/> <!-- 配置单独的.hbm.xml --> <property name="mappingResources"> <list> <value>com/ssh/domain/User.hbm.xml</value> </list> </property> </bean>
<!-- 注入UserDAO --> <bean id="userDao" class="com.ssh.dao.UserDAO"> <property name="sessionFactory" ref="sessionFactory"/> </bean>
<!--
Spring自动生成的是代理对象,实现了UserDAO接口,不能强转为UserDaoImpl对象 ApplicationContext context = new ClassPathXmlApplicationContext("classpath:applicationContext.xml"); UesrDAO dao = (UserDAO) context.getBean("userDao"); -->
<!-- 注入UserService --> <bean id="userService" class="com.ssh.dao.UserService"> <property name="userDao" ref="userDao"/> </bean> <!-- 配置 Spring 的声明式事务 --> <!-- 1. 配置数据源DataSource(必须) -->
<!-- 2. 配置事务管理器 --> <bean id="txManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean>
<!-- 3. 配置事务建议者 --> <tx:advice id="txAdivce" transaction-manager="txManager"> <tx:attributes> <tx:method name="get*" read-only="true"/> <tx:method name="*" propagation="REQUIRED"/> </tx:attributes> </tx:advice>
<!-- 4. 配置AOP切面 --> <aop:config> <aop:pointcut expression="execution(* com.ssh.service.*.*(..))" id="pointcut"/> <aop:advisor advice-ref="txAdivce" pointcut-ref="pointcut"/> </aop:config>
<!-- 5. 不能在hibernate中配置<property name="current_session_context_class">thread</property>,否则Spring不会自动开启事务 -->
<!-- 配置sprin监听器,在服务器启动时初始化IoC容器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 默认寻找WEB-INF下的applicationContext.xml --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext*.xml</param-value> </context-param>
<!-- 配置struts2过滤器 --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
//创建一个SuperActon继承ActionSupport并实现Web元素相关的接口 <bean id="superAction" class="com.ssh.action.SuperAction" /> <!-- 必须声明 scope 属性为 prototype (非单例) --> //创建自己的Action继承SuperAction便可以直接使用request,session等对象 <bean id="userAction" class="com.ssh.action.UserAction" parent="superAction" scope="prototype"> <property name="userService" ref="userService"/> </bean>
<!-- class属性的值对应applicationContext.xml中注入的Action的id名 --> <action name="user_*" class="userAction" method="{1}"> <result name="success">/success.jsp</result> </action>
<!-- 配置dataSource和sessionFactory --> <!-- 注解映射类的包扫描器 --> <property name="packagesToScan" value="com.ssh.entity"></property> <!-- 开启注解式依赖与注入 --> <context:annotation-config /> <context:component-scan base-package="com.ssh"/>
<!-- 开启注解式事务 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <tx:annotation-driven transaction-manager="transactionManager"/>
@Controller @Scope("prototype") public class UserAction extends ActionSupport { @Resource private UserService userService; } @Service @Transactional public class UserService { @Resource private UserDaoImpl userDao; } @Repository("userDao") public class UserDaoImpl implements UserDao{ @Resource private SessionFactory sessionFactory; } //若使用继承HibernateDaoSupport的方式,则不能直接注入SessionFactory public class UserDaoImpl extends HibernateDaoSupport implements UserDao{ @Resource(name="sessFactory") private void setSuperSessionFactory(SessionFactory sessionFactory) { super.setSessionFactory(sessionFactory); } }
问题:多对一映射时,获取多方对象时同时获取到的是一方的代理对象,在view层调用时会抛出一下异常:org.hibernate.LazyInitializationException: could not initialize proxy - no Session,即代理对象不 能被初始化。
原因:在service层添加了事务,事务提交时将session关闭了
解决办法(三种方式):
<!-- 此过滤器必须配置在struts2过滤器的前面 --> <filter> <filter-name>OpenSessionInViewFilter</filter-name> <filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class> </filter> <filter-mapping> <filter-name>OpenSessionInViewFilter</filter-name> <url-pattern>*.action<url-pattern> </filter-mapping>
标签:plugin 实现 inf struts 相关 show cat efi host
原文地址:http://www.cnblogs.com/mabaoqing/p/6647240.html