java.lang.ClassCastException:org.hibernate.internal.SessionImpl不能强制转换为org.hibernate.classic.Session

我将SpringBoot与hibernate和JPA一起使用。我创建了一个EntityManager类，并按如下方式使用它：

@Transactional
public class ParentDAO {

        @PersistenceContext
        private EntityManager entityManager;

        protected Session getSession() {

            if(entityManager!=null)
                System.out.println("entity manager instantiated...");

            return entityManager.unwrap(Session.class);
        }


}

扩展ParentDAO的类：

@Repository
@Transactional
@SuppressWarnings("unchecked")
public class GmCircularsDaoImpl extends ParentDAO implements IGmCircularsDAO {

    @Override
    public GmCirculars saveOrUpdate(GmCirculars obj) {

        Session session = null;

        try {
            //session = sessionFactory.openSession(); //commented by Zaid
            session= this.getSession(); //Added by Zaid

            session.beginTransaction();
            session.saveOrUpdate(obj);
            session.flush();
            session.getTransaction().commit();

        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
        finally {
            session.close();
        }
        return obj;
    }


    @Override
    public List<GmCirculars> find(GmCirculars obj, boolean activeOnly, int startOffset, int maxRows) {
        Session session = null;
        List<GmCirculars> discounts = null;

        try {
            if (null != obj) {

                //session = sessionFactory.openSession(); //commented by Zaid
                session= this.getSession(); //Added by Zaid

                Criteria criteria = session.createCriteria(GmCirculars.class);

                //some irrelvant code here

                //LIMIT startOffset, maxRows;
                criteria.setFirstResult(startOffset);
                criteria.setMaxResults(maxRows);

                criteria.addOrder(Order.desc("id"));
                criteria.setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY);
                discounts = criteria.list();

            }

        }
        catch (Exception e) {
            e.printStackTrace();
        }
        finally {
            session.close();
        }
        return discounts;
    }
}

@存储库
@交易的
@抑制警告（“未选中”）
公共类GmCircularsDaoImpl扩展了ParentDAO实现了igmcrcularsdao{
@凌驾
公共GmCirculars saveOrUpdate（GmCirculars obj）{
会话=空；
试一试{
//session=sessionFactory.openSession（）；//由Zaid注释
session=this.getSession（）；//由Zaid添加
session.beginTransaction（）；
会话。保存或更新（obj）；
session.flush（）；
session.getTransaction（）.commit（）；
}
捕获（例外情况除外）{
例如printStackTrace（）；
}
最后{
session.close（）；
}
返回obj；
}
@凌驾
公共列表查找（GmCirculars obj、boolean activeOnly、int startOffset、int maxRows）{
会话=空；
列表折扣=空；
试一试{
如果（null！=obj）{
//session=sessionFactory.openSession（）；//由Zaid注释
session=this.getSession（）；//由Zaid添加
条件=session.createCriteria（GmCirculars.class）；
//这里有一些无关代码
//限制startOffset，最大行数；
标准：setFirstResult（startOffset）；
标准。setMaxResults（maxRows）；
标准.addOrder（Order.desc（“id”））；
criteria.setResultTransformer（criteria.DISTINCT\u ROOT\u实体）；
折扣=标准。列表（）；
}
}
捕获（例外e）{
e、 printStackTrace（）；
}
最后{
session.close（）；
}
退货折扣；
}
}

当我运行代码时，它显示以下错误：

java.lang.ClassCastException: org.hibernate.internal.SessionImpl cannot be cast to org.hibernate.classic.Session
    at ae.gov.adm.saeed.dao.impl.ParentDAO.getSession(ParentDAO.java:27)
    at ae.gov.adm.saeed.dao.impl.GmCircularsDaoImpl.find(GmCircularsDaoImpl.java:64)
    at ae.gov.adm.saeed.dao.impl.GmCircularsDaoImpl$$FastClassBySpringCGLIB$$464553b0.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:769)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:99)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:747)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:689)
    at ae.gov.adm.saeed.dao.impl.GmCircularsDaoImpl$$EnhancerBySpringCGLIB$$5c7fd1d5.find(<generated>)
    at ae.gov.adm.saeed.service.CircularsService.fetchAllCircularsForOrganization(CircularsService.java:66)
    at ae.gov.adm.CircularsMicroservice.getAllCircularsForOrganization(CircularsMicroservice.java:54)
    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:190)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:888)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:523)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:590)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:108)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1598)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

java.lang.ClassCastException:org.hibernate.internal.SessionImpl不能强制转换为org.hibernate.classic.Session
在ae.gov.adm.saeed.dao.impl.ParentDAO.getSession上（ParentDAO.java:27）
请访问ae.gov.adm.saeed.dao.impl.GmCircularsDaoImpl.find（GmCircularsDaoImpl.java:64）
在ae.gov.adm.saeed.dao.impl.GmCircularsDaoImpl$$FastClassBySpringCGLIB$$464553b0.invoke（）上
位于org.springframework.cglib.proxy.MethodProxy.invoke（MethodProxy.java:218）
位于org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint（CglibAopProxy.java:769）
在org.springframework.aop.framework.ReflectiveMethodInvocation.procedue（ReflectiveMethodInvocation.java:163）上
位于org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.procedue（CglibAopProxy.java:747）
位于org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke（PersistenceExceptionTranslationInterceptor.java:139）
位于org.springframework.aop.framework.ReflectiveMethodInvocation.procedue（ReflectiveMethodInvocation.java:186）
位于org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.procedue（CglibAopProxy.java:747）
位于org.springframework.transaction.interceptor.TransactionSpectSupport.invokeWithinTransaction（TransactionSpectSupport.java:366）
位于org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor.java:99）
位于org.springframework.aop.framework.ReflectiveMethodInvocation.procedue（ReflectiveMethodInvocation.java:186）
位于org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.procedue（CglibAopProxy.java:747）
位于org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept（CglibAopProxy.java:689）
请访问ae.gov.adm.saeed.dao.impl.GmCircularsDaoImpl$$EnhancerBySpringCGLIB$$5c7fd1d5.find（）
在ae.gov.adm.saeed.service.CircularsService.fetchAllCircularsForOrganization（CircularsService.java:66）上
在ae.gov.adm.CircularsMicroservice.getAllCircularsForOrganization上（CircularsMicroservice.java:54）
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）处
位于sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）
在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）中
位于java.lang.reflect.Method.invoke（Method.java:498）
位于org.springframework.web.method.support.InvocableHandlerMethod.doInvoke（InvocableHandlerMethod.java:190）
位于org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest（InvocableHandlerMethod.java:138）
位于org.springframework.web.servlet.mvc.method.annotation.ServletinVaccableHandlerMethod.invokeAndHandle（ServletinVaccableHandlerMethod.java:106）
位于org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod（RequestMappingHandlerAdapter.java:888）
位于org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal（RequestMappingHandlerAdapter.java:793）
位于org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle（AbstractHandlerMethodAdapter.java:87）
位于org.springframework.web.servlet.DispatcherServlet.doDispatch（DispatcherServlet.java:1040）
位于org.springframework.web.servlet.DispatcherServlet.doService（DispatcherServlet.java:943）
位于org.springframework.web.servlet.FrameworkServlet.processRequest（FrameworkServlet.java:1006）
位于org.springframework.web.servlet.FrameworkServlet.doPost（FrameworkServlet.java:909）
位于javax.servlet.http.HttpServlet.service（HttpServlet.java:523）
位于org.springframework.web.servlet.FrameworkServlet.service（FrameworkServlet.java:883）
位于javax.servlet.http.HttpServlet.service（HttpServlet.java:590）
位于org.apache.catalina.core.ApplicationFilterChain.internalDoFilter（ApplicationFilterChain.java:231）
位于org.apache.catalina.core.ApplicationFilterChain.doFilter（ApplicationFilterChain.java:166）
在org.apache.tomcat.webs上
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example.hibernate</groupId>
    <artifactId>hibernate-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>hibernate-demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>