我有一個工作在亞馬遜EC2與MySQL的Spring Hibernate應用程序。我正在考慮將我的應用程序移植到Google App Engine,因爲Google現在使用Google Could SQL支持MySQL。谷歌Appengine雲春季休眠與SQL的問題
因此,將我現有的應用程序配置爲Google App Engine Web應用程序,然後編譯代碼時不會出現任何錯誤。我沒有改變任何東西到我現有的應用程序,它編譯並創建了所需的表並且服務器成功啓動。
但是,當運行通過hibernate訪問數據庫的應用程序時,出現以下錯誤。
org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.JDBCConnectionException: Cannot open connection
at org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:596)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy30.findById(Unknown Source)
at com.openentry.catgen.services.impl.WebsiteServiceImpl.getMasterDomain(WebsiteServiceImpl.java:99)
我正在爲我的實體類使用註釋。
有什麼我需要改變嗎?下面
是我的applicationContext.xml
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.url}"
p:username="${jdbc.username}" p:password="${jdbc.password}" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"
p:dataSource-ref="dataSource" p:configurationClass="org.hibernate.cfg.AnnotationConfiguration"
p:packagesToScan="com.package.app.entities">
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
<prop key="hibernate.generate_statistics">${hibernate.generate_statistics}</prop>
<prop key="hibernate.connection.useUnicode">${hibernate.connection.useUnicode}</prop>
<prop key="hibernate.connection.characterEncoding">${hibernate.connection.characterEncoding}</prop>
<prop key="hibernate.connection.charSet">${hibernate.connection.charSet}</prop>
<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
</props>
</property>
</bean>
<tx:annotation-driven />
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager"
p:sessionFactory-ref="sessionFactory" />
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<constructor-arg>
<ref bean="sessionFactory" />
</constructor-arg>
</bean>
一切只需更改兩個JDBC性工作** jdbc.driverClassName = com.google.appengine.api.rdbms.AppEngineDriver ** ** = jdbc.url的jdbc:谷歌:RDBMS://本地主機/數據庫** – zdesam
@zdesam:我面臨着同樣的情況。你能幫我嗎 – 1355
@ 1355你能提供你面臨的問題的細節嗎 – zdesam