百事通信息網(wǎng) 最近一段時(shí)間潛心自學(xué)struts,
spring,
hibernate框架，寫(xiě)了一些獨(dú)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(wèn)題，故寫(xiě)此文。
主要功能：完成數(shù)據(jù)庫(kù)表的查、增、刪、改操作。
問(wèn)題描述：查詢(xún)功能一切正常，但是在增、刪、改操作中發(fā)現(xiàn)，數(shù)據(jù)庫(kù)表中數(shù)據(jù)沒(méi)有改變，查看控制臺(tái)日志也沒(méi)有任何異常發(fā)現(xiàn)，納悶了好久，仔查檢查日志，發(fā)現(xiàn)在新增操作中表id有在自增，由此確定是問(wèn)題出在事務(wù)沒(méi)有提交。將事務(wù)配置上去后出現(xiàn)如下報(bào)錯(cuò)：java.lang.ClassCastException: $Proxy1，百度上搜到一文，在業(yè)務(wù)類(lèi)如果實(shí)現(xiàn)了接口，得增加如下代碼
<property name="proxyTargetClass">
<value>true</value>
</property>
果然如此，再次運(yùn)行，成功了！
以下是我applicationContext.xml的內(nèi)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>