org.springframework.orm.hibernate3.HibernateSystemException: Неизвестный объект

Question

Это приложение mvc Spring, использующее IntelliJ.

Я получаю эту ошибку:

org.springframework.orm.hibernate3.HibernateSystemException: Unknown entity: com.testproj1.core.model.User; nested exception is org.hibernate.MappingException: Unknown entity: com.testproj1.core.model.User 
    org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:679) 
    org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) 
    org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411) 
    org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) 
    org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:512) 
    org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:506) 
    com.testproj1.core.doa.UserDaoImpl.get(UserDaoImpl.java:17) 
    com.testproj1.core.service.UserServiceImpl.getUser(UserServiceImpl.java:22) 
    com.testproj1.web.controllers.HomeController.index(HomeController.java:19) 
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    java.lang.reflect.Method.invoke(Method.java:597) 
    org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424) 
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) 
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669) 
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:574) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 

root cause 

org.hibernate.MappingException: Unknown entity: com.testproj1.core.model.User 
    org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:701) 
    org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:92) 
    org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1080) 
    org.hibernate.impl.SessionImpl.get(SessionImpl.java:997) 
    org.hibernate.impl.SessionImpl.get(SessionImpl.java:990) 
    org.springframework.orm.hibernate3.HibernateTemplate$1.doInHibernate(HibernateTemplate.java:519) 
    org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) 
    org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) 
    org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:512) 
    org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:506) 
    com.testproj1.core.doa.UserDaoImpl.get(UserDaoImpl.java:17) 
    com.testproj1.core.service.UserServiceImpl.getUser(UserServiceImpl.java:22) 
    com.testproj1.web.controllers.HomeController.index(HomeController.java:19) 
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    java.lang.reflect.Method.invoke(Method.java:597) 
    org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436) 
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424) 
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) 
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) 
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669) 
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:574) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717) 
testproj1 

Вот моя установка, hibernate.cfg.xml:

<!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" 
     "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 

<hibernate-configuration> 
    <session-factory> 

     <mapping package="com.testproj1.core.model"/> 

     <mapping class="com.testproj1.core.model.User"/> 


    </session-factory> 

</hibernate-configuration> 

Мой сервлет-context.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:mvc="http://www.springframework.org/schema/mvc" 
    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 --> 

    <!-- Scans within the base package of the application for @Components to configure as beans --> 
    <!-- @Controller, @Service, @Configuration, etc. --> 
    <context:component-scan base-package="com.testproj1" /> 

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



    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> 
     <property name="driverClassName" value="com.mysql.jdbc.Driver"/> 
     <property name="url" value="jdbc:mysql://localhost/testproj1"/> 
     <property name="username" value="root"/> 
     <property name="password" value="123"/> 
     <property name="maxActive" value="100"/> 
     <property name="maxIdle" value="30"/> 
     <property name="maxWait" value="1000"/> 
     <property name="defaultAutoCommit" value="true"/> 
     <property name="removeAbandoned" value="true"/> 
     <property name="removeAbandonedTimeout" value="60"/> 
    </bean> 


    <!-- Hibernate SessionFactory --> 
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> 
     <property name="dataSource" ref="dataSource"/> 
     <!--<property name="packagesToScan" value="com.testproj1.core.model"/>--> 
     <property name="configLocation" value="/WEB-INF/config/hibernate.cfg.xml"/> 
     <property name="hibernateProperties"> 
      <value> 
       hibernate.dialect=org.hibernate.dialect.MySQLDialect 
       hibernate.query.substitutions=true 'Y', false 'N' 
       hibernate.show_sql=true 
      </value> 
     </property> 
     <property name="annotatedClasses"> 
      <list> 
       <value>com.testproj1.core.model.User</value> 
      </list> 
     </property> 
    </bean> 

    <!-- Transaction manager for a single Hibernate SessionFactory (alternative to JTA) --> 


    <bean id="userDao" class="com.testproj1.core.doa.UserDaoImpl"> 
     <property name="sessionFactory" ref="sessionFactory"/> 
    </bean> 

</beans> 

Мой контроллер:

public class HomeController { 

    @Autowired 
    private UserService userService; 

    @RequestMapping("/") 
    public String index() { 
     System.out.println("hello, world!"); 

     User user = userService.getUser(1); 

     System.out.println("Username is: " + user.getUsername()); 

     return "WEB-INF/views/home.jsp"; 
    } 
} 

UserServiceImpl:

@Service 
public class UserServiceImpl implements UserService { 

    @Autowired 
    UserDao userDao; 

    public User getUser(int id) { 
     return userDao.get(id); 
    } 

} 

UserDaoImpl:

public class UserDaoImpl extends GenericDaoImpl<User, Integer> implements UserDao { 



    public User get(int id) { 
     User user = super.getHibernateTemplate().get(User.class, id); 


     return user; 
    } 

    public void addUser(User user) 
    { 
     super.getHibernateTemplate().save(user); 
    } 

} 

модель Пользователь:

package com.testproj1.core.model; 

import org.hibernate.annotations.Entity; 


import javax.persistence.Column; 
import javax.persistence.GeneratedValue; 
import javax.persistence.Id; 
import javax.persistence.Table; 

@Entity 
@Table(name="users") 
public class User { 

    protected Integer id; 
    protected String user_name; 

    @Id 
    public Integer getId() { 
     return id; 
    } 

    @Column 
    public String getUsername() { 
     return user_name; 
    } 


    public void setId(Integer id) { 
     this.id = id; 
    } 

    public void setUsername(String user_name) { 
     this.user_name = user_name; 
    } 

} 

Теперь очевидно, что это не собирание моей модели пользователя по какой-то причине.

В чем я смущен, я установил его так, чтобы пружина автоматически сканировала банку для этого (по крайней мере, я думаю) в файле servlet-context.xml в теге компонентного сканирования.

У меня также есть свойство annotatedClasses в теге sessionFactory bean.

Я прокомментировал пакетыToScan в теге sessionFactory bean, поскольку я читал, что эта ошибка может быть вызвана круговыми ссылками, которые, я думаю, связаны с тем, что они подключены во много раз?

Answer 1

Используйте javax.persistence.Entity, а не org.hibernate.annotations.Entity.

Answer 2

Также используйте «javax.persistence.Id» @Id для вашего идентификатора класса i.e первичного ключа.