Spring 4 + Hibernate 5 = org.springframework.orm.jpa.EntityManagerHolder不能转换为org.springframework.orm.hibernate5.SessionHolder [英] Spring 4 + Hibernate 5 = org.springframework.orm.jpa.EntityManagerHolder cannot be cast to org.springframework.orm.hibernate5.SessionHolder

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本文介绍了Spring 4 + Hibernate 5 = org.springframework.orm.jpa.EntityManagerHolder不能转换为org.springframework.orm.hibernate5.SessionHolder的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

好吧，我是一个完整的初学者，当谈到开始一个新的java项目并集成诸如spring / hibernate等工具时，实际上，这是我第一次这样做。所以我肯定这个错误对你们来说是显而易见的。



猜测：


  • 我期望的会话工厂不是在Spring中注入的工厂。

  • 错误的依赖关系。



    • 错误 

      [2016-07-28 01:29:14.869] boot  -  22234 ERROR [http-nio-8080-exec-1] --- [dispatcherServlet]：servlet [dispatcherServlet]的Servlet.service（）在path []中的上下文中抛出异常[请求处理失败;嵌套异常是java.lang.ClassCastException：org.springframework.orm.jpa.EntityManagerHolder无法转换为org.springframework.orm.hibernate5.SessionHolder]，其根源为
     java.lang.ClassCastException：org.springframework.orm .jpa.EntityManagerHolder无法转换为org.springframework.orm.hibernate5.SessionHolder 
    在org.springframework.orm.hibernate5.HibernateTransactionManager.doGetTransaction（HibernateTransactionManager.java:376）

    pom.xml 

     <？xml version =1.0encoding =UTF-8？> 
    < project xmlns =http://maven.apache.org/POM/4.0.0xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
     xsi：schemaLocation =http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd\"> 
    < modelVersion> 4.0.0< / modelVersion> 
    < groupId> org.pse< / groupId> 
    < artifactId> plataforma-ejercicios< / artifactId> 
    < version> 1.0-SNAPSHOT< / version> 
     
    <属性> 
    < java.version> 1.8< /java.version> 
    < org.springframework.version> 4.3.1.RELEASE< /org.springframework.version> 
    < spring-boot-starter.version> 1.3.5.RELEASE< /spring-boot-starter.version> 
    < org.hibernate.version> 5.2.0.Final< /org.hibernate.version> 
    < mysql-connector-java.version> 5.1.38< /mysql-connector-java.version> 
    < c3p0.version> 0.9.1.2< /c3p0.version> 
    < / properties> 
     
     
    <依赖关系> 
     
    < dependency> 
    < groupId> c3p0< / groupId> 
    < artifactId> c3p0< / artifactId> 
    < version> $ {c3p0.version}< / version> 
    < /依赖关系> 
     
    < dependency> 
    < groupId> org.springframework< / groupId> 
    < artifactId> spring-orm< / artifactId> 
    < version> $ {org.springframework.version}< / version> 
    < /依赖关系> 
     
     <！ -  Hibernate  - > 
    < dependency> 
    < groupId> org.hibernate< / groupId> 
    < artifactId> hibernate-core< / artifactId> 
    < version> 5.2.1.Final< / version> 
    < /依赖关系> 
    < dependency> 
    < groupId> org.hibernate< / groupId> 
    < artifactId> hibernate-validator< / artifactId> 
    < version> 5.1.3.Final< / version> 
    < /依赖关系> 
    < dependency> 
    < groupId> org.hibernate.common< / groupId> 
    < artifactId> hibernate-commons-annotations< / artifactId> 
    < version> 5.0.1.Final< / version> 
    < /依赖关系> 
    < dependency> 
    < groupId> org.hibernate.javax.persistence< / groupId> 
    < artifactId> hibernate-jpa-2.0-api< / artifactId> 
    < version> 1.0.1.Final< / version> 
    < /依赖关系> 
    < dependency> 
    < groupId> org.hibernate< / groupId> 
    < artifactId> hibernate-entitymanager< / artifactId> 
    < version> 5.1.0.Final< / version> 
    < /依赖关系> 
     
    <！ -  Maria  - > 
    < dependency> 
    < groupId> org.mariadb.jdbc< / groupId> 
    < artifactId> mariadb-java-client< / artifactId> 
    < version> 1.1.7< / version> 
    < /依赖关系> 
     
     
     <！ -  Spring框架 - > 
    < dependency> 
    < groupId> org.springframework< / groupId> 
    < artifactId> spring-core< / artifactId> 
    < version> $ {org.springframework.version}< / version> 
    <排除项> 
    <排除> 
    < artifactId> commons-logging< / artifactId> 
    < groupId> commons-logging< / groupId> 
    < /排除> 
    < /排除> 
    < /依赖关系> 
     
     <！ -  Spring boot  - > 
     .... 
     ... 
    < /依赖关系> 
     
    < / project>

    base-context.xml 

     <？xml version =1.0encoding =UTF-8？> 
    < beans xmlns =http://www.springframework.org/schema/beans
     xmlns：xsi =http://www.w3.org/2001/XMLSchema-instancexmlns ：context =http://www.springframework.org/schema/context
     xsi：schemaLocation =
     http://www.springframework.org/schema/beans 
     http： //www.springframework.org/schema/beans/spring-beans-4.3.xsd 
     http://www.springframework.org/schema/context 
     http://www.springframework.org/模式/上下文/弹簧上下文4.3.xsd> 
     
    < import resource =classpath：hibernate-context.xml/> 
    < context：property-placeholder location =classpath：hibernate.properties/> 
     
    < bean id =studentDAOclass =org.pse.plataformaejercicios.dao.StudentDAO> 
    < property name =sessionFactoryref =sessionFactory/> 
    < / bean> 
     
    < / beans>

    hibernate-context.xml 

     <？xml version =1.0encoding =UTF-8？> 
    < beans xmlns =http://www.springframework.org/schema/beans
     xmlns：xsi =http://www.w3.org/2001/XMLSchema-instancexmlns ：tx =http://www.springframework.org/schema/tx
     xmlns：context =http://www.springframework.org/schema/context
     xsi：schemaLocation = 
     http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
     http：//www.springframework。 org / schema / tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd 
     http://www.springframework.org/schema/context http：//www.springframework .ORG /模式/上下文/弹簧上下文4.0.xsd> 
     
    < bean id =c3p0DataSourceclass =com.mchange.v2.c3p0.ComboPooledDataSource> 
    < property name =driverClassvalue =$ {hibernate.connection.driver_class}/> 
    < property name =jdbcUrlvalue =$ {hibernate.connection.url}/> 
    < property name =uservalue =$ {hibernate.connection.username}/> 
    < property name =passwordvalue =$ {hibernate.connection.password}/> 
    < property name =minPoolSizevalue =$ {hibernate.connection.min_pool_size}/> 
    < property name =maxPoolSizevalue =$ {hibernate.connection.max_pool_size}/> 
    < / bean> 
     
    < bean id =sessionFactory
     class =org.springframework.orm.hibernate5.LocalSessionFactoryBean> 
    < property name =dataSourceref =c3p0DataSource/> 
    < property name =hibernateProperties> 
    <道具> 
    < prop key =hibernate.show_sql> true< / prop> 
    < /道具> 
    < / property> 
    < property name =packagesToScanvalue =org.pse.plataformaejercicios.model/> 
     
    < / bean> 
     
    < tx：注解驱动的事务管理器=transactionManager/> 
    < bean id =transactionManager
     class =org.springframework.orm.hibernate5.HibernateTransactionManager> 
    < property name =sessionFactoryref =sessionFactory/> 
    < / bean> 
    < / beans>

    hibernate.properties 

      hibernate.dialect org.hibernate.dialect.MySQL5Dialect 
     hibernate.connection.driver_class org.mariadb.jdbc.Driver 
     hibernate.connection.url jdbc：mariadb：//127.0.0.1：3306 / pse 
     hibernate.connection.username pse 
     hibernate.connection.password passpse 
     hibernate.connection.min_pool_size 2 
     hibernate.connection.max_pool_size 10 
     hibernate.connection.autocommit true 
     hibernate.hbm2ddl.auto update 
     hibernate.show_sql true
    $ b

    StudentController.java 

      @RestController 
     public class StudentController {
     
     private Logger logger = LoggerFactory.getLogger（StudentController.class）; 
     
     private StudentService studentService; 
     
     @RequestMapping（value =/ student / {studentId} / classes，method = RequestMethod.GET）
     public ClassDTO getClassesForStudent（）{
     return new ClassDTO（）; 
    } 
     
     @RequestMapping（/ saveStudent / {nombre} / {apellido}）
     public void saveStudent（@PathVariable String nombre，@PathVariable String apellido）{
     logger.info（Entrada al controller de：TestHibernate）; 
     
    学生=新生（）; 
     student.setLastName（apellido）; 
     student.setName（nombre）; 
     
     studentService.save（student）; 
    } 
     
     
     @Autowired 
     public void setStudentService（StudentService studentService）{
     this.studentService = studentService; 
    } 
     
    }

    StudentServiceImpl .java 

      @Service 
    公共类StudentServiceImpl实现StudentService {
     
    私人StudentDAO studentDAO; 
     
     @Override 
     @Transactional（readOnly = false）
     public void save（Student student）{
     studentDAO.save（student）; 
    } 
     
     @Autowired 
     public void setStudentDAO（StudentDAO studentDAO）{
     this.studentDAO = studentDAO; 
    } 
    }

    StudentDAO.java em> 

      public class StudentDAO {
     
     private SessionFactory sessionFactory; 
     
     public void save（Student student）{
     try {
     Session session = sessionFactory.getCurrentSession（）; 
     session.save（student）; 
    } catch（Exception e）{
     e.printStackTrace（）; 
    } 
    } 
     
     @Autowired 
     public void setSessionFactory（SessionFactory sessionFactory）{
     this.sessionFactory = sessionFactory; 
    } 
     
    }


    解决方案

    你使用Spring-Boot吗？是这样的，在我的情况下，问题是与@EnableAutoConfiguration - 使用排除= HibernateJpaAutoConfiguration.class


    OK, I'm a complete beginner when it comes to start a new java project and integrate tools like spring/hibernate, etc. In fact, this is the first time I'm doing it. So I'm sure the error will be obvious for you guys.

    Guessings:

    • The session factory I expected is not the one being injected by spring.
    • Wrong dependencies.

    Error

    [2016-07-28 01:29:14.869] boot - 22234 ERROR [http-nio-8080-exec-1] --- [dispatcherServlet]: Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.ClassCastException: org.springframework.orm.jpa.EntityManagerHolder cannot be cast to org.springframework.orm.hibernate5.SessionHolder] with root cause
    java.lang.ClassCastException: org.springframework.orm.jpa.EntityManagerHolder cannot be cast to org.springframework.orm.hibernate5.SessionHolder
        at org.springframework.orm.hibernate5.HibernateTransactionManager.doGetTransaction(HibernateTransactionManager.java:376)

    pom.xml

    <?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.pse</groupId>
    <artifactId>plataforma-ejercicios</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <java.version>1.8</java.version>
        <org.springframework.version>4.3.1.RELEASE</org.springframework.version>
        <spring-boot-starter.version>1.3.5.RELEASE</spring-boot-starter.version>
        <org.hibernate.version>5.2.0.Final</org.hibernate.version>
        <mysql-connector-java.version>5.1.38</mysql-connector-java.version>
        <c3p0.version>0.9.1.2</c3p0.version>
    </properties>


    <dependencies>

        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>${c3p0.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${org.springframework.version}</version>
        </dependency>

        <!-- Hibernate -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.2.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.1.3.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.common</groupId>
            <artifactId>hibernate-commons-annotations</artifactId>
            <version>5.0.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>1.0.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.1.0.Final</version>
        </dependency>

        <!-- Maria -->
        <dependency>
            <groupId>org.mariadb.jdbc</groupId>
            <artifactId>mariadb-java-client</artifactId>
            <version>1.1.7</version>
        </dependency>


        <!-- Spring framework -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${org.springframework.version}</version>
            <exclusions>
                <exclusion>
                    <artifactId>commons-logging</artifactId>
                    <groupId>commons-logging</groupId>
                </exclusion>
            </exclusions>
        </dependency>

        <!-- Spring boot -->
         ....
           ...
    </dependencies>

</project>

    base-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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
      http://www.springframework.org/schema/beans 
      http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
      http://www.springframework.org/schema/context 
      http://www.springframework.org/schema/context/spring-context-4.3.xsd">

    <import resource="classpath:hibernate-context.xml" />
    <context:property-placeholder location="classpath:hibernate.properties" />

    <bean id="studentDAO" class="org.pse.plataformaejercicios.dao.StudentDAO">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>

</beans>

    hibernate-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:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd 
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

    <bean id="c3p0DataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${hibernate.connection.driver_class}" />
        <property name="jdbcUrl" value="${hibernate.connection.url}" />
        <property name="user" value="${hibernate.connection.username}" />
        <property name="password" value="${hibernate.connection.password}" />
        <property name="minPoolSize" value="${hibernate.connection.min_pool_size}" />
        <property name="maxPoolSize" value="${hibernate.connection.max_pool_size}" />
    </bean>

    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
        <property name="dataSource" ref="c3p0DataSource" />
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.show_sql">true</prop>
            </props>
        </property>
        <property name="packagesToScan" value="org.pse.plataformaejercicios.model" />

    </bean>

    <tx:annotation-driven transaction-manager="transactionManager" />
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate5.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
</beans>

    hibernate.properties

    hibernate.dialect org.hibernate.dialect.MySQL5Dialect
hibernate.connection.driver_class org.mariadb.jdbc.Driver
hibernate.connection.url jdbc:mariadb://127.0.0.1:3306/pse
hibernate.connection.username pse
hibernate.connection.password passpse
hibernate.connection.min_pool_size 2
hibernate.connection.max_pool_size 10
hibernate.connection.autocommit true
hibernate.hbm2ddl.auto update
hibernate.show_sql true

    StudentController.java

    @RestController
public class StudentController {

    private Logger logger = LoggerFactory.getLogger(StudentController.class);

    private StudentService studentService;

    @RequestMapping(value = "/student/{studentId}/classes", method = RequestMethod.GET)
    public ClassDTO getClassesForStudent(){
        return new ClassDTO();
    }

    @RequestMapping("/saveStudent/{nombre}/{apellido}")
    public void saveStudent(@PathVariable String nombre, @PathVariable String apellido) {
        logger.info("Entrada al controller de: TestHibernate");

        Student student = new Student();
        student.setLastName(apellido);
        student.setName(nombre);

        studentService.save(student);
    }


    @Autowired
    public void setStudentService(StudentService studentService) {
        this.studentService = studentService;
    }

}

    StudentServiceImpl.java

    @Service
public class StudentServiceImpl implements StudentService {

    private StudentDAO studentDAO;

    @Override
    @Transactional(readOnly = false)
    public void save(Student student) {
        studentDAO.save(student);
    }

    @Autowired
    public void setStudentDAO(StudentDAO studentDAO) {
        this.studentDAO = studentDAO;
    }
}

    StudentDAO.java

    public class StudentDAO {

    private SessionFactory sessionFactory;

    public void save(Student student){
        try {
            Session session = sessionFactory.getCurrentSession();
            session.save(student);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Autowired
    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

}

    解决方案

    Do you use Spring-Boot? Is so, in my case the problem was with @EnableAutoConfiguration - use exclude=HibernateJpaAutoConfiguration.class

    这篇关于Spring 4 + Hibernate 5 = org.springframework.orm.jpa.EntityManagerHolder不能转换为org.springframework.orm.hibernate5.SessionHolder的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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