org.hibernate.MappingException: Unknown entity: com.app.persistence.Test - spring

Question

I am running a Spring Boot Project where I want to use Hibernate and HQL queries.
I am getting following error:
Exception in Dao
org.hibernate.MappingException: Unknown entity: com.app.persistence.Test
at org.hibernate.internal.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:783)
at org.hibernate.internal.SessionImpl.getEntityPersister(SessionImpl.java:1520)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:100)
at org.hibernate.jpa.event.internal.core.JpaSaveEventListener.saveWithGeneratedId(JpaSaveEventListener.java:56)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:192)
at org.hibernate.event.internal.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:38)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:177)
at org.hibernate.event.internal.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:32)
at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:73)
at org.hibernate.internal.SessionImpl.fireSave(SessionImpl.java:679)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:671)
at org.hibernate.internal.SessionImpl.save(SessionImpl.java:666)
at com.thp.clinic.allergiesConditions.dao.AllergiesDaoImpl.check(AllergiesDaoImpl.java:38)
at com.thp.clinic.allergiesConditions.dao.AllergiesDaoImpl$$FastClassBySpringCGLIB$$6b8d942f.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
at com.thp.clinic.allergiesConditions.dao.AllergiesDaoImpl$$EnhancerBySpringCGLIB$$b9677149.check(<generated>)
at com.thp.clinic.allergiesConditions.service.AllergiesServiceImpl.check(AllergiesServiceImpl.java:23)
at com.thp.clinic.allergiesConditions.service.AllergiesServiceImpl$$FastClassBySpringCGLIB$$7070308f.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:282)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
at com.thp.clinic.allergiesConditions.service.AllergiesServiceImpl$$EnhancerBySpringCGLIB$$1fddf4a.check(<generated>)
at com.thp.clinic.allergiesConditions.controller.AllergiesController.check(AllergiesController.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
My Model class is as follows:
package com.app.persistence;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name="test")
public class Test {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name="test_id")
private long testId;
#Column(name="name")
private String name;
#Column(name="phone")
private String phone;
//getters and setters
}
And my DAO is as follows:
#Autowired
SessionFactory factory;
#Override
public String check(Test test) {
Session session = null;
try{
session = factory.openSession();
session.save(test);
session.flush();
return "done";
} catch(Exception e) {
System.out.println("Exception in Dao");
e.printStackTrace();
throw e;
}
I understand that it is not able to map with the model class. But I am not able to figure out where I should add the mapping (if required).
I have already included #ComponentScan(basePackages = { "com.app" }) in my configuration class.
Can someone please help me to sort it out?

Answer 1

Add #EntityScan(basePackages = { "youentitypackage" }) along with #ComponentScan(basePackages = { "com.app" }). This will look for your entity classes.