Wicket + Spring + JPA + Hibernate：找不到持久单元 [英] Wicket+Spring+JPA+Hibernate: No Persistence Unit Found
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问题描述
我正在使用Wicket + Spring + JPA + Hibernate开发Web应用程序。这是我第一次使用此设置进行的项目，我想我可能犯了一些错误。我得到以下错误：找不到名为ApplicationEntityManager的持久性单元。
I'm developing a web application using Wicket+Spring+JPA+Hibernate. This is my first project with this setup and I think I've probably made some mistakes. I get the following error: No persistence unit called "ApplicationEntityManager" found.
我的persistence.xml文件如下所示：
My persistence.xml file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="ApplicationEntityManager" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
</persistence-unit>
</persistence>
我的applicationContext.xml：
My 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:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:property-placeholder location="classpath:jdbc.properties"/>
<!-- Enable @Transactional support -->
<tx:annotation-driven/>
<!-- Enable @AspectJ support -->
<aop:aspectj-autoproxy/>
<!-- Scans for @Repository, @Service and @Component -->
<context:component-scan base-package="org.appfuse"/>
<context:annotation-config />
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="maxActive" value="30"/>
<property name="maxIdle" value="10"/>
<property name="maxWait" value="1000"/>
<property name="defaultAutoCommit" value="true"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="ApplicationEntityManager" />
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="${jpa.databasePlatform}" />
<property name="showSql" value="${jpa.showSql}" />
<property name="generateDdl" value="${jpa.generateDdl}" />
</bean>
</property>
</bean>
<bean id="transactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="dataSource" ref="dataSource" />
</bean>
<aop:config>
<aop:advisor id="managerTx" advice-ref="txAdvice" pointcut="execution(* *..service.*Manager.*(..))"/>
</aop:config>
<tx:advice id="txAdvice">
<tx:attributes>
<tx:method name="get*" read-only="true"/>
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
</beans>
我的web.xml：
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
<display-name>AppFuse Light</display-name>
<!-- [INSERT FRAGMENT HERE] -->
<!-- Define the basename for a resource bundle for I18N -->
<context-param>
<param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
<param-value>messages</param-value>
</context-param>
<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>
<filter-name>messageFilter</filter-name>
<filter-class>org.appfuse.web.MessageFilter</filter-class>
</filter>
<filter>
<filter-name>open.entitymanager.in.view</filter-name>
<filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class>
</filter>
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
</filter>
<filter>
<filter-name>wicket</filter-name>
<filter-class>org.apache.wicket.protocol.http.WicketFilter</filter-class>
<init-param>
<param-name>applicationClassName</param-name>
<param-value>org.appfuse.web.Application</param-value>
</init-param>
<init-param>
<param-name>configuration</param-name>
<param-value>development</param-value>
</init-param>
</filter>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext*.xml</param-value>
</context-param>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>messageFilter</filter-name>
<url-pattern>/*</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>open.entitymanager.in.view</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>wicket</filter-name>
<url-pattern>/app/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<error-page>
<error-code>404</error-code>
<location>/404.jsp</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/error.jsp</location>
</error-page>
</web-app>
你能看到任何明显的错误吗？这是一个标准配置吗？谢谢！
Can you see any apparent mistakes? Is this a standard configuration? Thanks!
推荐答案
确保 persistence.xml 位于正确的位置。在你的构建路径中，它应该 /META-INF/persistence.xml ，这样在编译的 war 文件中它应该结束于 /WEB-INF/classes/META-INF/persistence.xml 。
Make sure persistence.xml is at the right location. In your build path it should /META-INF/persistence.xml, so that in the compiled war file it should end up in /WEB-INF/classes/META-INF/persistence.xml.
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