整合原理
- Struct2与Spring整合:将Action对象交与Spring容器负责创建
- Hibernate与Spring整合:将SessionFactory交与Spring容器来维护,Spring负责Session维护及aop事务
导包
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hibernate
- hibernate/lib/required
- hibernate/lib/jpa(java persist api java的持久化规范 接口)
- jdbc包 ---- mysql-connector-java
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Struts2
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struts-blank.war/WEB-INF/lib/*
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struts整合spring插件包 ---- struts2-spring-plugin
注意:这个包一旦导入,那么struts2在启动时就会寻找spring容器.找不到将会抛出异常
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Spring
- 基本:4+2 ---- core|beans|context|expression|logging|log4j
- 整合web:web包 ---- spring-web
- 整合aop:4个 ---- spring-aop|spring-aspect|aop联盟|aopweaving
- 整合Hibernate和事务:4个 ---- spring-jdbc|spring-tx|c3p0|spring-orm
- 整合junit4测试:test包 ---- spring-test
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标签库 ---- jstl
配置Spring
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创建配置文件并导入约束(4个)
beans|context|aop|tx -
配置Spring随项目启动
web.xml <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param>
配置Structs2
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配置struts2主配置文件struts.xml
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配置struts2核心过滤器到web.xml
<filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter </filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
struts2与spring整合
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配置常量
<!--将action的创建交与Spring容器--> <constant name="struts.objectFactory" value="spring"/> <!--Spring负责装配Action的依赖,默认打开--> <constant name="struts.objectFactory.spring.autoWire" value="name"/> -
整合
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struts2自己创建action,spring负责组装依赖属性
//struts.xml <action name="demo" class="com.ssh.demo.view.DemoAction"> <result name="success">/index.jsp</result> </action> //applicationContext <bean name="action" class="com.ssh.demo.view.DemoAction"/> <bean name="userService" class="com.ssh.demo.service.UserServiceImpl"/> -
spring负责创建action以及组装
//struts <!--class上填写spring中Action对象的name属性值，完全由Spring管理Action的生命周期， 包括Action的创建。备注需要手动组装依赖属性--> <action name="demo" class="demoAction"> <result name="success">/index.jsp</result> </action> //applicationContext.xml <bean name="userService" class="com.ssh.demo.service.UserServiceImpl"/> <!--Action对象作用域一定是多例的，这样才符合struts2框架--> <bean name="demoAction" class="com.ssh.demo.view.DemoAction" scope="prototype"> <property name="userService" ref="userService"/> </bean>
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Hibernate配置
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导入实体类或orm元数据
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配置主配置文件
<session-factory> <!-- 数据库驱动 --> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <!-- 数据库url --> <property name="hibernate.connection.url">jdbc:mysql://39.106.1.213:3306/hb? characterEncoding=utf-8</property> <!-- 数据库连接用户名 --> <property name="hibernate.connection.username">xxx</property> <!-- 数据库连接密码 --> <property name="hibernate.connection.password">xxx</property> <!-- 数据库方言 --> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <!-- 将hibernate生成的sql语句打印到控制台 --> <property name="hibernate.show_sql">true</property> <!-- 将hibernate生成的sql语句格式化(语法缩进) --> <property name="hibernate.format_sql">true</property> <property name="hibernate.hbm2ddl.auto">update</property> <!-- 引入orm元数据 路径书写: 填写src下的路径 --> <mapping class="com.ssh.demo.entity.User"/> </session-factory>
Spring整合hibernate
将sessionFactory对象交给spring容器管理\
- 配置方案一:仍然使用外部的hibernate.cfg.xml配置信息
<!--将SessionFactory配置到Spring-->
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml"/>
</bean>
- 配置方案二:不使用hibernate.cfg.xml配置文件,在spring中配置hibernate配置信息
<!--将SessionFactory配置到Spring-->
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="hibernateProperties" >
<props>
<!--必选配置-->
<prop key="hibernate.connection.driver_class">com.mysql.jdbc.Driver</prop>
<prop key="hibernate.connection.url">jdbc:mysql://39.106.1.213:3306/hb? characterEncoding=utf-8</prop>
<prop key="hibernate.connection.username">xxx</prop>
<prop key="hibernate.connection.password">xxx</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<!--可选配置-->
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<!--xml配置：引入orm元数据,指定orm元数据所在包路径,spring会自动读取包中所有配置-->
<property name="mappingDirectoryLocations" value="classpath:com/ssh/demo/entity"/>
<!--注解配置：spring会自动读取包中注解的配置-->
<property name="packagesToScan">
<list>
<value>com.ssh.demo.entity</value>
</list>
</property>
</bean>
Spring整合c3p0连接池
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配置db.properties
jdbc.driverClass=com.mysql.jdbc.Driver jdbc.jdbcUrl=jdbc:mysql://39.106.1.213:3306/hb?characterEncoding=utf-8 jdbc.user=xxx jdbc.password=xxx -
引入连接池到spring中
<!--配置c3bO连接池--> <context:property-placeholder location="classpath:db.properties"/> <bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driverClass}"/> <property name="jdbcUrl" value="${jdbc.jdbcUrl}"/> <property name="user" value="${jdbc.user}"/> <property name="password" value="${jdbc.password}"/> </bean> -
将连接池注入给SessionFactory
<bean name="sessionFactory" class="org.springframework.orm.hibernate5.LocalSessionFactoryBean"> <!-- 将连接池注入到SessionFactory中，hibernate通过连接池获得连接--> <property name="dataSource" ref="dataSource"/> <property name="hibernateProperties" > <props> <!--必选配置--> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <!--可选配置--> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> </props> </property> <!--引入orm元数据,指定orm元数据所在包路径,spring会自动读取包中所有配置--> <!--property name="mappingDirectoryLocations" value="classpath:com/ssh/demo/entity"/>--> <property name="packagesToScan"> <list> <value>com.ssh.demo.entity</value> </list> </property> </bean>
Spring整合hibernate事务管理
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Dao类创建:继承HibernateDaoSupport
UserDaoImpl extends HibernateDaoSupport -
hibernate模板的操作
getHibernateTemplate() -
spring中配置dao
<bean name="userDao" class="com.ssh.demo.dao.UserDaoImpl"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <bean name="userService" class="com.ssh.demo.service.UserServiceImpl"> <property name="userDao" ref="userDao"/> </bean> <!--Action对象作用域一定是多例的，这样才符合struts2框架--> <bean name="demoAction" class="com.ssh.demo.view.DemoAction" scope="prototype"> <property name="userService" ref="userService"/> </bean>
Spring的aop操作
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将核心事务管理器配置到spring
<bean name="transactionManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"/> </bean> -
配置事务
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xml
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配置通知
<!-- 配置事务通知 --> <tx:advice transaction-manager="transactionManager" id="txadvice"> <tx:attributes> <tx:method name="*" read-only="false"/> </tx:attributes> </tx:advice> -
配置织入
<!-- 配置织入--> <aop:config> <!-- 配置切点表达式--> <aop:pointcut id="txPc" expression="execution(* com.ssh.demo.service.*.*(..))"/> <!-- 配置切面：通知+切点--> <!-- advice-ref:通知名称--> <!-- pointcut-ref:切点名称--> <aop:advisor advice-ref="txadvice" pointcut-ref="txPc"/> </aop:config>
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注解
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开启注解事务
<tx:annotation-driven transaction-manager="transactionManager"/> -
Service类中使用注解(类或方法)
@Transactional(isolation = Isolation.REPEATABLE_READ,propagation = Propagation.REQUIRED,readOnly = false)
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扩大session作用范围(配置filter)
为了避免使用懒加载时出现no-session问题.需要扩大session的作用范围
任何Filter一定要在strutsFilter之前调用
<filter>
<filter-name>openSessionInViewFilter</filter-name>
<filter-class>
org.springframework.orm.hibernate5.support.OpenSessionInViewFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>openSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
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