1.本设计采用springMVC+Hibernate ，事务控制在Service层，直接上代码
2.web.xml
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
version="2.5"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.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>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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<servlet-name>spring</servlet-name>
</filter-mapping>
<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>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>springMVC3</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext-servlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC3</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>20</session-timeout>
</session-config>
<display-name>MeatBall</display-name>
<welcome-file-list>
<welcome-file>/admin/homepage</welcome-file>
</welcome-file-list>
</web-app>
2. applicationContext.xml
<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:task="http://www.springframework.org/schema/task"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:annotation-config />
<!-- 扫描Controller,Service,Reponsitory -->
<context:component-scan base-package="com.zxd" >
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
<context:include-filter type="annotation" expression="org.springframework.stereotype.Service" />
<context:include-filter type="annotation" expression="org.springframework.stereotype.Repository" />
</context:component-scan>
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:resources.properties</value>
</list>
</property>
</bean>
<!-- 数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${connection.driver_class}" />
<property name="jdbcUrl" value="${connection.url}" />
<property name="user" value="${connection.username}" />
<property name="password" value="${connection.password}" />
<property name="maxPoolSize" value="80" />
<property name="minPoolSize" value="1" />
<property name="initialPoolSize" value="1" />
<property name="maxIdleTime" value="20" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan">
<list>
<value>com.zxd.project.goods.model</value>
<value>com.zxd.project.user.model</value>
</list>
</property>
<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.jdbc.batch_size">20</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" isolation="READ_COMMITTED"/>
<tx:method name="upload*" propagation="REQUIRED" />
<tx:method name="merge*" propagation="REQUIRED" />
<tx:method name="del*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="clear*" propagation="REQUIRED" />
<tx:method name="put*" propagation="REQUIRED" />
<tx:method name="use*" propagation="REQUIRED" />
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="load*" propagation="REQUIRED" read-only="true" />
<tx:method name="count*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="after*" propagation="REQUIRED" read-only="true" />
<tx:method name="list*" propagation="REQUIRED" />
<tx:method name="pag*" propagation="REQUIRED" />
<tx:method name="query*" propagation="REQUIRED" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 只对业务逻辑(service)层实施事务 -->
<aop:config>
<aop:pointcut id="txPointcut"
expression="execution(* com.zxd..service.*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut" />
</aop:config>
</beans>
3.application-servlet.xml
<?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:sec="http://www.springframework.org/schema/security"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-3.2.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.1.xsd ">
<!-- 注解驱动 -->
<mvc:annotation-driven>
<mvc:message-converters>
<!-- 中文编码 -->
<bean class="com.zxd.common.util.UTF8StringHttpMessageConverter" />
</mvc:message-converters>
</mvc:annotation-driven>
<!-- 定时任务驱动 -->
<task:annotation-driven/>
<context:component-scan base-package="com.zxd" >
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
</context:component-scan>
<!-- 视图解析 -->
<bean class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<!-- 返回的视图模型数据需要经过jstl来处理 -->
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 对静态资源文件的访问 不支持访问WEB-INF目录 -->
<mvc:default-servlet-handler />
<!-- 对静态资源文件的访问 支持访问WEB-INF目录 -->
<mvc:resources location="/static/" mapping="/static/**" />
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!--one of the properties available;the maximum file size in bytes -->
<property name="maxUploadSize" value="500000000" />
</bean>
<bean id="stringConverter" class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/plain;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 输出对象转JSON支持 -->
<bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="stringConverter"/>
<ref bean="jsonConverter" />
</list>
</property>
</bean>
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<bean id="ErrorInterceptor" class="com.zxd.common.interceptors.GlobleErrorInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
</beans>
4.以下为详解。
首先通过web.xml解析applicationContext(此为父容器)
<!-- 扫描Controller,Service,Reponsitory -->
<context:component-scan base-package="com.zxd" >
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
<context:include-filter type="annotation" expression="org.springframework.stereotype.Service" />
<context:include-filter type="annotation" expression="org.springframework.stereotype.Repository" />
</context:component-scan>
在这段代码中，首先会吧com.zxd下的Controller,Service,Repository,注入到父容器中（可以不写Service,Repository，Controller,直接写成
<context:component-scan base-package="com.zxd" />也是可以的，Component-scan中就包含Service,Repository，Controller这一些注解），父容器是有事务控制的。 然后再来看
<context:component-scan base-package="com.zxd" >
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
</context:component-scan>这段代码，在加载applicationContext-servlet.xml中一定要除去Service层，防止再次注入到父容器中，这个applicationContext-servlet是不具备事务控制的。
下面，摘一段控制台打印信息。
可以看到创建了食物，而且我在update*的isolation处改变了隔离级别。事务配置成功。那么下面再来看一下失败的。
在这里，我们可以看到，rollingBack，事务回滚成功。
如果您还想更深入了解，例如源码等，请捐赠我任意一笔金额。谢谢
时间： 2024-10-13 15:36:50