沒有持久性提供EntityManager的命名

我得到了錯誤「命名projectPersistence org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor（ConstructorResolver.java:288）爲EntityManager的不持久性提供者」，而我跑我的項目在服務器上。這裏是我的配置文件：沒有持久性提供EntityManager的命名

的persistence.xml

<?xml version="1.0" encoding="UTF-8"?> 
<persistence:persistence version="1.0" 
    xmlns:persistence="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_1_0.xsd "> 
    <persistence:persistence-unit name="projectPersistence" 
     transaction-type="RESOURCE_LOCAL"> 
     <persistence:provider>org.hibernate.ejb.HibernatePersistence</persistence:provider> 
     <persistence:mapping-file>orm.xml</persistence:mapping-file> 
     <persistence:class>it.test.home.entity.User</persistence:class> 
     <persistence:properties> 
      <persistence:property name="hibernate.connection.driver_class" 
       value="com.mysql.jdbc.Driver" /> 
      <persistence:property name="hibernate.connection.password" 
       value="root" /> 
      <persistence:property name="hibernate.connection.url" 
       value="jdbc:mysql://localhost:3306/hibernate_db" /> 
      <persistence:property name="hibernate.connection.username" 
       value="root" /> 
      <persistence:property name="hibernate.dialect" 
       value="org.hibernate.dialect.MySQLDialect" /> 

     </persistence:properties> 

    </persistence:persistence-unit> 

</persistence:persistence>

UserDaoImpl.java

package it.test.home.dao; 
// Generated 4-mar-2012 19.36.54 by Hibernate Tools 3.4.0.CR1 


import it.test.home.entity.User; 

import javax.ejb.Stateless; 
import javax.persistence.EntityManager; 
import javax.persistence.PersistenceContext; 
import org.apache.commons.logging.Log; 
import org.apache.commons.logging.LogFactory; 

/** 
* Home object for domain model class UserTable. 
* @see it.test.home.entity.User 
* @author Hibernate Tools 
*/ 
@Stateless 
public class UserDaoImpl implements UserDao { 

    private static final Log log = LogFactory.getLog(UserDaoImpl.class); 

    @PersistenceContext(unitName="projectPersistence") 
    private EntityManager entityManager; 

    @Override 
    public void persist(User transientInstance) { 
     log.debug("persisting UserTable instance"); 
     try { 
      entityManager.persist(transientInstance); 
      log.debug("persist successful"); 
     } 
     catch (RuntimeException re) { 
      log.error("persist failed", re); 
      throw re; 
     } 
    } 

    @Override 
    public void remove(User persistentInstance) { 
     log.debug("removing UserTable instance"); 
     try { 
      entityManager.remove(persistentInstance); 
      log.debug("remove successful"); 
     } 
     catch (RuntimeException re) { 
      log.error("remove failed", re); 
      throw re; 
     } 
    } 

    @Override 
    public User merge(User detachedInstance) { 
     log.debug("merging UserTable instance"); 
     try { 
      User result = entityManager.merge(detachedInstance); 
      log.debug("merge successful"); 
      return result; 
     } 
     catch (RuntimeException re) { 
      log.error("merge failed", re); 
      throw re; 
     } 
    } 

    @Override 
    public User findById(String id) { 
     log.debug("getting UserTable instance with id: " + id); 
     try { 
      User instance = entityManager.find(User.class, id); 
      log.debug("get successful"); 
      return instance; 
     } 
     catch (RuntimeException re) { 
      log.error("get failed", re); 
      throw re; 
     } 
    } 
}

projectPersistence-dao.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: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.xsd 
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd 
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> 

    <bean 
     class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" /> 

    <bean class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean" 
     id="entityManagerFactory"> 
     <property name="persistenceUnitName" value="projectPersistence" /> 
    </bean> 
    <bean class="org.springframework.orm.jpa.JpaTransactionManager" 
     id="transactionManager"> 
     <property name="entityManagerFactory" ref="entityManagerFactory" /> 
    </bean> 
    <bean autowire="byName" class="it.test.home.dao.UserDaoImpl" id="userDao"> 
     <property name="entityManagerFactory" ref="entityManagerFactory" /> 
    </bean> 
    <context:component-scan base-package="it.test.home.entity" /> 
    <tx:annotation-driven /> 



</beans>

projectPersistence-enterprise.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.xsd 
     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd 
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd 
     http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> 

    <import resource="projectPersistence-dao.xml" /> 
    <context:annotation-config /> 
    <tx:annotation-driven /> 


</beans>

beanRefContext.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" 
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 

    <bean 
     class="org.springframework.context.support.ClassPathXmlApplicationContext"> 
     <constructor-arg value="classpath*:projectPersistence-enterprise.xml" /> 
    </bean> 
</beans>

的servlet-context.xml的

<?xml version="1.0" encoding="UTF-8"?> 
<beans:beans xmlns="http://www.springframework.org/schema/mvc" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd 
     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"> 

    <!-- DispatcherServlet Context: defines this servlet's request-processing 
     infrastructure --> 

    <!-- Enables the Spring MVC @Controller programming model --> 
    <annotation-driven /> 

    <!-- Handles HTTP GET requests for /resources/** by efficiently serving 
     up static resources in the ${webappRoot}/resources directory --> 
    <resources mapping="/resources/**" location="/resources/" /> 

    <!-- Resolves views selected for rendering by @Controllers to .jsp resources 
     in the /WEB-INF/views directory --> 
    <beans:bean 
     class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
     <beans:property name="prefix" value="/WEB-INF/views/" /> 
     <beans:property name="suffix" value=".jsp" /> 
    </beans:bean> 

    <beans:import resource="classpath*:beanRefContext.xml"/> 

    <context:component-scan base-package="it.test.home" /> 



</beans:beans>

，並UserServiceImpl.java

package it.test.home.service; 

import javax.ejb.Stateless; 
import javax.interceptor.Interceptors; 

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.ejb.interceptor.SpringBeanAutowiringInterceptor; 
import org.springframework.stereotype.Service; 

import it.test.home.dao.UserDao; 
import it.test.home.entity.User; 

@Service("userService") 
@Stateless(mappedName="UserService", name="UserService") 
@Interceptors(SpringBeanAutowiringInterceptor.class) 
public class UserServiceImpl implements UserService { 

    @Autowired 
    private UserDao userDao; 

    @Override 
    public void persist(User transientInstance) { 
     userDao.persist(transientInstance); 

    } 

    @Override 
    public void remove(User persistentInstance) { 
     userDao.remove(persistentInstance); 

    } 

    @Override 
    public User merge(User detachedInstance) { 
     return userDao.merge(detachedInstance); 
    } 

    @Override 
    public User findById(String id) { 
     return userDao.findById(id); 
    } 

}

這是我的控制檯的日誌：

ERROR: org.springframework.web.servlet.DispatcherServlet - Context initialization failed 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.context.support.ClassPathXmlApplicationContext#0' defined in URL [file:/C:/Users/Giuseppe/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp2/wtpwebapps/RESTService4.0/WEB-INF/classes/beanRefContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.context.support.ClassPathXmlApplicationContext]: Constructor threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in URL [file:/C:/Users/Giuseppe/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp2/wtpwebapps/RESTService4.0/WEB-INF/classes/projectPersistence-dao.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: No Persistence provider for EntityManager named projectPersistence 
    at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:288) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1035) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:939) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:585) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) 
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645) 
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508) 
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449) 
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133) 
    at javax.servlet.GenericServlet.init(GenericServlet.java:160) 
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1266) 
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1185) 
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1080) 
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5015) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5302) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1568) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1558) 
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:138) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
    at java.lang.Thread.run(Thread.java:662)

我還在Maven依賴項中包含了hibernate-core和hibernate-entitymanager，默認情況下，persistence.xml包含在classpath中。

任何幫助，將不勝感激。謝謝。

來源

2012-03-05 observer

你在哪裏有你的persistence.xml文件？它應該是在一些{classpath中}/META-INF目錄（例如，WEB-INF /班/ META-INF /或在你的JAR/META-INF）

編輯：

，或者如果你有你文件在右側plase有可能是您的xml命名空間有問題，請嘗試使用此樣式No Persistence provider for EntityManager named

來源

2012-03-05 12:15:36

沒有持久性提供EntityManager的命名

回答

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