Hibernate JPA :No Persistence provider for EntityManager nam_org.hibernate.jpa.hibernatepersistenceprovider-优快云博客

报错如下:

java.lang.ExceptionInInitializerError
    at hibernate.Dome5.test01(Dome5.java:26)
    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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named myJPAUnit
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:85)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
    at utils.JPAUtil.<clinit>(JPAUtil.java:16)

这个错误大概的意思是:无法找到persistence.xml文件中name=”myJPAUnit”的persistence-unit .
我这里出现错误的原因是hibernate版本问题
下面是persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/persistence 
   http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
   version="2.0">
   <!-- 配置持久化单元 ,可以配置多个,但是名称不能重复
        name:用于指定持久化单元名称
        transaction-type:指定事务类型
   -->

   <persistence-unit name="myJPAUnit" transaction-type="RESOURCE_LOCAL">
        <!-- 注意在5.3.1版本中,provider为org.hibernate.jpa.HibernatePersistenceProvider
            而不是org.hibernate.ejb.HibernatePersistence
         -->
        <!--<provider>org.hibernate.ejb.HibernatePersistence</provider>-->
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <!-- 指定JPA注解的实体类位置 -->
            <class>entity.Customer</class>
        <!-- 连接数据库的配置,其实就是hibernate.cfg.xml的内容 -->
            <properties>
                <!-- 第一部分:连接数据库的信息 -->
                <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"></property>
                <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/hibernate?characterEncoding=UTF-8 "></property>
                <property name="hibernate.connection.username" value="root"></property>
                <property name="hibernate.connection.password" value="123456"></property>
                <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"></property>
                <!-- 可选配置 -->
                    <!-- 显示sql语句 -->
                <property name="hibernate.show_sql" value="true"></property>
                    <!-- 格式化输出sql语句 -->
                <property name="hibernate.format_sql" value="true"></property>
                    <!-- 采用哪种方式生成DDL语句 
                        update:表示检查实体类的映射配置和数据库的表结构是否一致,如果不一致,更新表结构
                    -->
                <property name="hibernate.hbm2ddl.auto" value="update"></property>
            </properties>

   </persistence-unit>

   </persistence>