百事通信息網 最近一段時間潛心自學struts,
spring,
hibernate框架,寫了一些獨立框架的例子還算順利,今天試著將
spring與
hibernate整合,遇到一些問題,故寫此文。
主要功能:完成數據庫表的查、增、刪、改操作。
問題描述:查詢功能一切正常,但是在增、刪、改操作中發現,數據庫表中數據沒有改變,查看控制臺日志也沒有任何異常發現,納悶了好久,仔查檢查日志,發現在新增操作中表id有在自增,由此確定是問題出在事務沒有提交。將事務配置上去后出現如下報錯:java.lang.ClassCastException: $Proxy1,百度上搜到一文,在業務類如果實現了接口,得增加如下代碼
<property name="proxyTargetClass">
<value>true</value>
</property>
果然如此,再次運行,成功了!
以下是我applicationContext.xml的內容:
- <?xml version="1.0" encoding="UTF-8"?>
- <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
- <beans>
- <bean id="mySessionFactory"
- class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
- <property name="configLocation">
- <value>classpath:hibernate.cfg.xml</value>
- </property>
- </bean>
- <bean id="myTransactionManager"
- class="org.springframework.orm.hibernate3.HibernateTransactionManager">
- <property name="sessionFactory">
- <ref bean="mySessionFactory" />
- </property>
- </bean>
- <bean id="myBaseTransactionProxy"
- class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
- abstract="true">
- <property name="transactionManager" ref="myTransactionManager" />
- <property name="transactionAttributes">
- <props>
- <prop key="*">PROPAGATION_REQUIRED</prop>
- <!--
- <prop key="insert*">PROPAGATION_REQUIRED</prop>
- <prop key="save">PROPAGATION_REQUIRED</prop>
- <prop key="update*">PROPAGATION_REQUIRED</prop>
- <prop key="edit*">PROPAGATION_REQUIRED</prop>
- <prop key="del*">PROPAGATION_REQUIRED</prop>
- <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
- <prop key="query*">PROPAGATION_REQUIRED,readOnly</prop>
- <prop key="disPlay*">PROPAGATION_REQUIRES_NEW</prop>
- -->
- </props>
- </property>
- </bean>
- <bean id="UsersDAO" class="com.notepad.dao.UsersDAO">
- <property name="sessionFactory">
- <ref bean="mySessionFactory" />
- </property>
- </bean>
- <bean id="userTarget" class="com.notepad.bussies.UserService">
- <property name="usersDao">
- <ref local="UsersDAO" />
- </property>
- </bean>
- <bean id="UserService" parent="myBaseTransactionProxy">
- <property name="proxyTargetClass">
- <value>true</value>
- </property>
- <property name="target">
- <ref local="userTarget" />
- </property>
- </bean>
- </beans>