没有定义[javax.persistence.EntityManagerFactory]类型的唯一bean：期望的单个bean但找到0
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有人能告诉我配置有什么问题吗？我太沮丧了，我一直在为此烦恼。任何指针都是受欢迎的。谢谢
persistence.xml中
<?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="myPersistenceUnit" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/oracle</jta-data-source>
<class>com.myproject.domain.UserAccount</class>
<properties>
<property name="eclipselink.logging.level" value="FINE"/>
<property name="eclipselink.jdbc.batch-writing" value="JDBC" />
<property name="eclipselink.target-database" value="Oracle10g"/>
<property name="eclipselink.cache.type.default" value="NONE"/>
<!--Integrate EclipseLink with JTA in Glassfish-->
<property name="eclipselink.target-server" value="SunAS9"/>
<property name="eclipselink.cache.size.default" value="0"/>
<property name="eclipselink.cache.shared.default" value="false"/>
</properties>
</persistence-unit>
</persistence>
Veb.hml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>MyProject</display-name>
<persistence-unit-ref>
<persistence-unit-ref-name>persistence/myPersistenceUnit</persistence-unit-ref-name>
<persistence-unit-name>myPersistenceUnit</persistence-unit-name>
</persistence-unit-ref>
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-dispatcher-servlet.xml</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
applicationContext.xml中
<?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"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.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
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/jee
http://www.springframework.org/schema/jee/spring-jee.xsd" default-autowire="byName">
<tx:annotation-driven/>
<tx:jta-transaction-manager/>
<jee:jndi-lookup id="entityManagerFactory" jndi-name="persistence/myPersistenceUnit"/>
<bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor"/>
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
<!-- enables interpretation of the @PersistenceUnit/@PersistenceContext annotations providing convenient
access to EntityManagerFactory/EntityManager -->
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
</beans>
MVC-调度-servlet.xml中
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<tx:annotation-driven />
<tx:jta-transaction-manager />
<context:component-scan base-package="com.myProject" />
<context:annotation-config />
<!-- Enables the Spring MVC @Controller programming model -->
<mvc:annotation-driven />
<mvc:default-servlet-handler />
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<!-- Location Tiles config -->
<bean id="tilesConfigurer"
class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/tiles-defs.xml</value>
</list>
</property>
</bean>
<!-- Resolves views selected for rendering by Tiles -->
<bean id="tilesViewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver"
p:viewClass="org.springframework.web.servlet.view.tiles2.TilesView" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basename" value="/WEB-INF/messages" />
<property name="cacheSeconds" value="0"/>
</bean>
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />
</beans>
user account DAO.Java
@Repository
public class UserAccountDAO implements IUserAccountDAO {
private EntityManager entityManager;
@PersistenceContext
public void setEntityManager(EntityManager entityManager) {
this.entityManager = entityManager;
}
@Override
@Transactional(readOnly = true, propagation = Propagation.REQUIRED)
public UserAccount checkLogin(String userName, String pwd) {
//* Find the user in the DB
Query queryUserAccount = entityManager.createQuery("select u from UserAccount u where (u.username = :userName) and (u.password = :pwd)");
.......
}
}
login controller.Java
@Controller
@SessionAttributes({"userAccount"})
public class LoginLogOutController {
private static final Logger logger = LoggerFactory.getLogger(UserAccount.class);
@Resource
private UserAccountDAO userDAO;
@RequestMapping(value="/loginForm.htm", method = RequestMethod.GET)
public String showloginForm(Map model) {
logger.debug("Get login form");
UserAccount userAccount = new UserAccount();
model.put("userAccount", userAccount);
return "loginform";
}
...
错误堆栈
INFO: 13:52:21,657 ERROR ContextLoader:220 - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'loginController': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userAccountDAO': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [javax.persistence.EntityManagerFactory] is defined: expected single bean but found 0
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessPropertyValues(CommonAnnotationBeanPostProcessor.java:300)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1074)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:276)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:197)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:47)
at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:4664)
at com.sun.enterprise.web.WebModule.contextListenerStart(WebModule.java:535)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:5266)
at com.sun.enterprise.web.WebModule.start(WebModule.java:499)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:928)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:912)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:694)
at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1947)
at com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1619)
at com.sun.enterprise.web.WebApplication.start(WebApplication.java:90)
at org.glassfish.internal.data.EngineRef.start(EngineRef.java:126)
at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:241)
at org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:236)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:339)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:183)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:272)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:305)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:320)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1176)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$900(CommandRunnerImpl.java:83)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1235)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1224)
at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:365)
at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:204)
at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166)
at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:100)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:245)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:732)
答案
我的猜测是
<jee:jndi-lookup id="entityManagerFactory" jndi-name="persistence/myPersistenceUnit"/>
你不需要告诉spring这个实现了什么接口？或者可能不是。查看我自己的代码我不抱歉...
另一答案
尝试注入对ApplicationContext的引用。并按名称查找entitymanager。确保它实现了您期望的界面。可能是一个类加载器的错配？
另一答案
我是Spring框架配置的新手，但是试图在网站上帮助另一个人，我找到了轰鸣的Spring + JPA教程（谷歌的pt-br翻译得很好）。我发现它确实澄清了主要是因为它试图解释在将这两种技术结合使用时的良好实践：
希望它有所帮助！
另一答案
你尝试过不同的jndi-name路径吗？我在其他地方看到这种表示法：
<jee:jndi-lookup expected-type="javax.persistence.EntityManagerFactory" "entityManagerFactory"
jndi-name="java:comp/env/persistence/myPersistenceUnit"></jee:jndi-lookup>
似乎某些类需要jndi名称的标准查找路径
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