Spring org.hibernate.MappingException:未知实体：com.app.persistence.Test

我正在运行一个springboot项目，我想在其中使用Hibernate和HQL查询

我遇到以下错误：

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)

我的刀是这样的：

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
}

@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;
        }

我知道它不能与模型类进行映射。但我无法确定应该在何处添加映射（如果需要）

我已经在我的配置类中包含了

@ComponentScan（basePackages={“com.app”}）

---

有人能帮我整理一下吗？

添加

@EntityScan（basePackages={“youentitypackage”}）

以及

@ComponentScan（basePackages={“com.app”}）

。这将查找实体类。

@ComponentScan（basePackages={“com.app”}）

用于组件。确保设置了指向实体类包的

@EntityScan

注释是否使用了

@EntityScan

？

@EntityScan

用于扫描实体包<代码>@ComponentScan注释用于为每个用@Component、@Service、@Controller、@RestController、@Repository、。。。并将它们登记到弹簧上container@Hiren谢谢你的回复。您还可以告诉我应该在哪里添加

@EntityScan

？您可以将其添加到您的配置文件（即带有

@configuration

注释的文件）中，通常与使用

@ComponentScan

的位置相同。添加

@EntityScan（basePackages={“youentitypackage”}）

@Hiren谢谢，这很有帮助！！：）谢谢，虽然它很简单，但对于初学者来说有时可能很难理解：）是的！当其他人遇到同样的错误时会很有帮助：）乐意帮忙