【2】GAE+Sping中JDO的配置

要在GAE中用Spring配置JDO，首先要下载几个jar包：

aopalliance.jar和aspectjweaver.jar，我都已经放到附件!

好了，看看配置文件：

 

<?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:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

	<!-- persistenceManagerFactory -->
	<bean id="persistenceManagerFactory"
		class="org.springframework.orm.jdo.LocalPersistenceManagerFactoryBean">
		<property name="persistenceManagerFactoryName" value="transactions-optional" />
	</bean>
	<bean id="persistenceManagerFactoryProxy"
		class="org.springframework.orm.jdo.TransactionAwarePersistenceManagerFactoryProxy">
		<property name="targetPersistenceManagerFactory" ref="persistenceManagerFactory" />
		<property name="allowCreate" value="true" />
	</bean>

	<bean id="transactionManager" class="org.springframework.orm.jdo.JdoTransactionManager">
		<property name="persistenceManagerFactory" ref="persistenceManagerFactoryProxy" />
	</bean>

	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
			<tx:method name="*" propagation="REQUIRED" />
		</tx:attributes>
	</tx:advice>

	<aop:config>
		<aop:pointcut id="myJdoMethods"
			expression="execution(* com.snowtigersoft.taobao.integration.dao.*.*(..))" />
		<aop:pointcut id="myServiceMethods"
			expression="execution(* com.snowtigersoft.taobao.biz.service.*.*(..))" />
		<aop:advisor advice-ref="txAdvice" pointcut-ref="myJdoMethods" />
		<aop:advisor advice-ref="txAdvice" pointcut-ref="myServiceMethods" />
	</aop:config>

	<!-- Dao -->
	<bean id="itemCatDao"
		class="com.snowtigersoft.taobao.integration.dao.impl.ItemCatDAOJdoImpl">
		<property name="persistenceManagerFactory" ref="persistenceManagerFactoryProxy" />
	</bean>
</beans>

 

一定不要忘了beans的这些属性（我开始就忘了。。。。结果就会Exception ）：

 

xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"

 

 这样配置之后，在DAO中就可以直接使用JdoTemplate来进行JDO的操作的，不用关心PersistenceManager的open和close问题了～～

 

public void deleteItemCat(ItemCatJDO itemCat) throws Exception {

		try {
			getJdoTemplate().deletePersistent(itemCat);
		} catch (DataAccessException e) {
			log
					.warning("[deleteItemCat] DataAccessException:"
							+ e.getMessage());
			e.printStackTrace();
			throw e;
		}

	}

 

 

评论

1 楼 neilone.cn 2010-09-15  

兄弟，我始终出现这个错误

The resource named "transactions-optional" could not be found in the class loader "com.google.apphosting.runtime.security.UserClassLoader@145fe3b".

是在jdo里配置的，如何在spring中寻找？？？