创建EntityManagerFactory时出现异常 - 在SerialContext中查找'persistence / myPU'失败 [英] Exception while creating EntityManagerFactory - Lookup failed for 'persistence/myPU' in SerialContext

问题描述

我正在使用Glassfish应用服务器，并尝试将我的spring-hibernate Web应用程序连接到我的db，我有以下配置：

在Glassfish中，

我还添加了jndi名称的JDBC资源（在glassfish中）： jdbc / myResource

STRONG>。此资源位于我已创建和测试的连接池中（在第1步中）。

我的EntityManaget用@PersistenceContext注释：

  @PersistenceContext（unitName =myPU）
受保护的EntityManager entityManager; 
  

在\src\main\resources\META-INF\下创建了我的持久性.xml文件：

 < persistence-unit name =myPU> 
< provider> org.hibernate.ejb.HibernatePersistence< / provider> 
< jta-data-source> jdbc / myResource< / jta-data-source> 
<属性> 
<！ -  Glassfish事务管理器查找 - > 
< property name =hibernate.transaction.manager_lookup_class
 value =org.hibernate.transaction.SunONETransactionManagerLookup/> 
< property name =hibernate.dialectvalue =org.hibernate.dialect.H2Dialect>< / property> 
< property name =hibernate.show_sqlvalue =true/> 
< property name =hibernate.default_schemavalue =PUBLIC/> 
< property name =hibernate.format_sqlvalue =true/> 
 <！ - 使用当前实体配置验证现有模式 - > 
< property name =hibernate.hbm2ddl.autovalue =validate/> 
< / properties> 
< / persistence-unit> 
  

这就是我的applicationContext的样子：

  bean id =txManager
 class =org.springframework.orm.hibernate4.HibernateTransactionManager> 
< / bean> 
 
< tx：annotation-driven transaction-manager =txManager/> 
 
< jee：jndi-lookup id =emfjndi-name =persistence / myPU/> 
 
 <！ -   - 为了启用EntityManager注入 - > 
< bean 
 class =org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor> 
< property name =persistenceUnits> 
< map> 
< entry key =myPUvalue =persistence / myPU/> 
< / map> 
< / property> 
< / bean> 
  

在我的web.xml中有：

 <持久性单元-REF> 
< persistence-unit-ref-name> persistence / myPU< / persistence-unit-ref-name> 
< persistence-unit-name> myPU< / persistence-unit-name> 
  

：

没有定义名为'myPU'的bean。请参阅server.log获取更多详细信息。

为什么它将持久性单元看作一个bean？

任何想法我做错了什么？

提前致谢解决方案

输入=JTA到我的persistence.xml。
由于某种原因，我的印象是，如果我在persistence.xml中指定了一个jta-data-source，那么默认的事务类型应该是JTA，也许它不是。我真的不明白我对这个解决方案的异常的关系，但目前我的persistence.xml有以下行：

 < persistence-unit name =myPUtransaction-type =JTA> 
  

它就像一个魅力一样。

I'm working with Glassfish application server and trying to connect my spring-hibernate web application to my db, I have the following configurations:

In Glassfish I have added a jdbc connection and send a successful ping to the DB.

I also added a JDBC resource (in glassfish) with jndi name: jdbc/myResource. This resource is under the connection pool in which I have created and tested (in step 1).

My EntityManaget is annotated with @PersistenceContext:

@PersistenceContext(unitName = "myPU")
protected EntityManager entityManager;

Under \src\main\resources\META-INF\ I created my persistence.xml file:

<persistence-unit name="myPU">
    <provider>org.hibernate.ejb.HibernatePersistence</provider>
    <jta-data-source>jdbc/myResource</jta-data-source>
    <properties>
        <!-- Glassfish transaction manager lookup -->
        <property name="hibernate.transaction.manager_lookup_class"
            value="org.hibernate.transaction.SunONETransactionManagerLookup" />
        <property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect"></property>
        <property name="hibernate.show_sql" value="true" />
        <property name="hibernate.default_schema" value="PUBLIC" />
        <property name="hibernate.format_sql" value="true" />
        <!-- Validates the existing schema with the current entities configuration -->
        <property name="hibernate.hbm2ddl.auto" value="validate" />
    </properties>
</persistence-unit>

This is how my applicationContext looks like:

bean id="txManager"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
</bean>

<tx:annotation-driven transaction-manager="txManager" />

<jee:jndi-lookup id="emf" jndi-name="persistence/myPU" />

<!-- In order to enable EntityManager injection -->
<bean
    class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor">
    <property name="persistenceUnits">
        <map>
            <entry key="myPU" value="persistence/myPU" />
        </map>
    </property>
</bean>

In my web.xml I have:

<persistence-unit-ref>
<persistence-unit-ref-name>persistence/myPU</persistence-unit-ref-name>
<persistence-unit-name>myPU</persistence-unit-name>

When I publish I keep getting:

No bean named 'myPU' is defined. Please see server.log for more details.

Why is it looking for the persistence unit as a bean?
Any ideas what am I doing wrong?

Thanks in advance

解决方案

Resolved - I added transaction-type="JTA" to my persistence.xml. For some reason I was under the impression that if I'm specifying a jta-data-source in my persistence.xml the default transaction-type should be "JTA", maybe it isn't. I don't really understand the relation of the exception I had to this solution but at the moment my persistence.xml has the following line:

<persistence-unit name="myPU" transaction-type="JTA">

And it works like a charm.

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