org.hibernate.MappingException: Неизвестный объект: net.roseindia.model.Article

Question

я пытаюсь запустить пример проекта из Rose India Here, но я получаю исключение:

org.hibernate.MappingException: Неизвестный объект: чистый .roseindia.model.Article

Я перепробовал все решения я нашел, один из принятого решения является:

Использование ::: импорт javax.persistence.Entity; но никакого успеха.

Одно из решений относится к классу персистентности, но поскольку образец проекта не содержит класс персистентности (поскольку я новичок в Spring, поэтому я мало знаю о создании класса persistence).

Мой диспетчеру класс

<?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-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/tx 
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> 

<context:property-placeholder location="classpath:jdbc.properties" /> 
<context:component-scan base-package="net.roseindia" /> 

<tx:annotation-driven transaction-manager="hibernateTransactionManager"/> 
<bean id="jspViewResolver" 
class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
<property name="viewClass" 

value="org.springframework.web.servlet.view.JstlView" /> 

<property name="prefix" value="/WEB-INF/view/" /> 
<property name="suffix" value=".jsp" /> 
</bean> 

<bean id="dataSource" 
class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 

<property name="driverClassName" value="com.mysql.jdbc.Driver" /> 

<property name="url" value="jdbc:mysql://localhost:3306/db_roseindia" /> 

<property name="username" value="root" /> 

<property name="password" value="" />  
</bean> 
<bean id="sessionFactory"  

class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> 

<property name="dataSource" ref="dataSource" />  

<property name="annotatedClasses"> 
<list> 
<value>net.roseindia.model.Article</value> 
</list> 
</property> 
<property name="hibernateProperties"> 
<props> 
<prop key="hibernate.dialect">${hibernate.dialect}</prop> 

<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>        
</props> 
</property> 

</bean> 

<bean id="hibernateTransactionManager" 
class="org.springframework.orm.hibernate3.HibernateTransactionManager"> 

<property name="sessionFactory" ref="sessionFactory" /> 
</bean> 

<bean id="articleService" class="net.roseindia.service.ArticleServiceImpl" ></bean> 

<bean id="articleDao" class="net.roseindia.dao.ArticleDaoImpl"></bean> 

</beans> 

и статья класс

package net.roseindia.model; 

import java.util.Date; 
import javax.persistence.Entity; 
import javax.persistence.Column; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.Table; 

@Entity 
@Table(name = "article") 

public class Article { 

@Id 
@GeneratedValue (strategy = GenerationType.AUTO) 

@Column (name = "article_id") 

private Long articleId; 

@Column(name = "article_name", nullable = false, length=20) 
private String articleName; 

@Column(name = "article_desc", nullable = false) 
private String articleDesc; 

@Column(name = "date_added") 
private Date addedDate; 

я получаю исключение, как:

12:18:17,226 ERROR [[dispatcher]] Servlet.service() for servlet dispatcher threw 
exception 
org.hibernate.MappingException: Unknown entity: net.roseindia.model.Article 
at  
org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550) 
at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338) 
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:180) 
at org.hibernate.event.def.AbstractSaveEventListener.getEntityState 
(AbstractSaveEventListener.java:512) 
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener. 
performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:80) 
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener. 
onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70) 
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:507) 
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:499) 
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:495) 
at net.roseindia.dao.ArticleDaoImpl.saveArticle(ArticleDaoImpl.java:22) 
at net.roseindia.service.ArticleServiceImpl.addArticle(ArticleServiceImpl.java:36) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.springframework.aop.support.AopUtils. 
invokeJoinpointUsingReflection(AopUtils.java:307) 
atorg.springframework.aop.framework.ReflectiveMethodInvocation. 
invokeJoinpoint(ReflectiveMethodInvocation.java:183) 
atorg.springframework.aop.framework.ReflectiveMethodInvocation. 
proceed(ReflectiveMethodInvocation.java:150) 
at org.springframework.transaction.interceptor.TransactionInterceptor. 
invoke(TransactionInterceptor.java:108) 
at org.springframework.aop.framework.ReflectiveMethodInvocation 
.proceed(ReflectiveMethodInvocation.java:172) 
at org.springframework.aop.framework.JdkDynamicAopProxy. 
invoke(JdkDynamicAopProxy.java:202) 
at $Proxy69.addArticle(Unknown Source) 
at net.roseindia.controller.ArticleController. 
saveArticle(ArticleController.java:38) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
at java.lang.reflect.Method.invoke(Unknown Source) 
at org.springframework.web.bind.annotation.support. 
HandlerMethodInvoker.doInvokeMethod(HandlerMethodInvoker.java:710) 
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker. 
invokeHandlerMethod(HandlerMethodInvoker.java:167) 
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter 
.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:414) 
at org.springframework.web.servlet.mvc.annotation. 
AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:402) 
at org.springframework.web.servlet.DispatcherServlet. 
doDispatch(DispatcherServlet.java:771) 
at org.springframework.web.servlet.DispatcherServlet. 
doService(DispatcherServlet.java:716) 
at org.springframework.web.servlet.FrameworkServlet 
.processRequest(FrameworkServlet.java:647) 
at org.springframework.web.servlet.FrameworkServlet 
.doPost(FrameworkServlet.java:563) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
at org.apache.catalina.core.ApplicationFilterChain. 
internalDoFilter(ApplicationFilterChain.java:290) 
at org.apache.catalina.core.ApplicationFilterChain. 
doFilter(ApplicationFilterChain.java:206) 
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) 
at org.apache.catalina.core.ApplicationFilterChain. 
internalDoFilter(ApplicationFilterChain.java:235) 
at org.apache.catalina.core.ApplicationFilterChain. 
doFilter(ApplicationFilterChain.java:206) 
at org.apache.catalina.core.StandardWrapperValve. 
invoke(StandardWrapperValve.java:230) 
at org.apache.catalina.core.StandardContextValve. 
invoke(StandardContextValve.java:175) 
at org.jboss.web.tomcat.security.SecurityAssociationValve. 
invoke(SecurityAssociationValve.java:182) 
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
at org.jboss.web.tomcat.service.jca.CachedConnectionValve. 
invoke(CachedConnectionValve.java:157) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262) 
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) 
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler. 
process(Http11Protocol.java:583) 
at org.apache.tomcat.util.net.JIoEndpoint$Worker. 
run(JIoEndpoint.java:446) 
at java.lang.Thread.run(Unknown Source) 

Для полного кода любезно посетить This link

Вам будет оказана помощь и драгоценное время в этом отношении.

Много большое спасибо заранее ..

Answer 1

ли вы на самом деле имеют persistence.xml? Является ли ваш класс указанным там?

<persistence-unit name="xyz"> 
[...] 
<class>net.roseindia.model.Article</class> 
[...] 
</persistence-unit>