Spring IllegalStateException：JTA EntityManager无法使用getTransaction（） [英] Spring IllegalStateException: A JTA EntityManager cannot use getTransaction()

问题描述

因此，在一个大型重构项目之后，我留下了这个例外，并且不确定如何纠正它。它处理的是一些我没写过的代码，我不熟悉它是如何工作的。还有其他问题处理这个例外，但似乎没有一个问题适合我的情况。

So after a big refactoring project, I am left with this exception and am unsure as how to correct it. It's dealing with some code that I did not write and I am unfamiliar with how it all works. There are other questions out there dealing with this exception, but none seem to fit my situation.

使用 EntityManager的类是 SpecialClaimsCaseRepositoryImpl ：

package com.redacted.sch.repository.jpa;

//Imports

@Repository
public class SpecialClaimsCaseRepositoryImpl extends SimpleJpaRepository<SpecialClaimsCaseDto, SpecialClaimsCaseDto.Id> implements SpecialClaimsCaseRepository{

    @PersistenceContext(unitName = "schManager")
    private EntityManager em;

          //Some autogenerated methods

    public void setEntityManager(EntityManager em) {
        this.em = em;
    }

    public EntityManager getEntityManager() {
        return em;
    }
}

Persistence.xml：

Persistence.xml:

<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_1_0.xsd"
    version="1.0">

    <persistence-unit name="schManager">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <jta-data-source>jdbc/SCH_DS</jta-data-source>
        <class>com.redacted.sch.domain.model.SpecialClaimsCaseDto</class>
        <properties>
            <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.WebSphereExtendedJTATransactionLookup" />
            <property name="hibernate.cache.region.factory_class" value="net.sf.ehcache.hibernate.SingletonEhCacheRegionFactory" />
            <property name="hibernate.cache.use_query_cache" value="true" />
            <property name="hibernate.cache.use_second_level_cache" value="true" />
            <property name="hibernate.dialect" value="com.bcbsks.hibernate.dialect.DB2Dialect" />
            <property name="hibernate.format_sql" value="true" />
            <property name="hibernate.generate_statistics" value="false" />
            <property name="hibernate.jdbc.use_scrollable_resultset" value="true" />
        </properties>
    </persistence-unit>
</persistence>

sch_model_spring.xml：

sch_model_spring.xml:

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

        <context:component-scan base-package="com.redacted.repository.jpa,
              com.redacted.sch.domain.model,
              com.redacted.sch.repository.jpa,
              com.redacted.sch.service,
              com.redacted.sch.service.impl"/>

        <tx:annotation-driven />

        <tx:jta-transaction-manager />

        <!-- Data source used for testing -->
        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
            <property name="driverClassName" value="com.ibm.db2.jcc.DB2Driver" />
            <property name="url" value="jdbc:db2:redacted.redacted.com" />
            <property name="username" value="redacted" />
            <property name="password" value="redacted" />
        </bean>

        <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
              <property name="persistenceUnitName" value="schManager" />
              <property name="dataSource" ref="dataSource" />
        </bean>

        <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
            <property name="entityManagerFactory" ref="entityManagerFactory" />
        </bean> 
</beans>

这是我的项目结构：

>

这是堆栈跟踪的一部分，在此上有完整的跟踪fpaste

Here's a portion of the stack trace, with the full trace at this fpaste

Caused by: java.lang.IllegalStateException: A JTA EntityManager cannot use getTransaction()
    at org.hibernate.ejb.AbstractEntityManagerImpl.getTransaction(AbstractEntityManagerImpl.java:985)
    at org.springframework.orm.jpa.DefaultJpaDialect.beginTransaction(DefaultJpaDialect.java:67)
    at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:380)
    ... 80 more

我在这里是一个总菜鸟，所以如果需要任何其他信息，请询问，我会更新。

I'm a total noob here, so if any other information is needed just ask and I'll update.

感谢所有帮助！

解决方案

问题是你的配置。您已为JTA配置了休眠。

The problem is your configuration. You have hibernate configured for JTA.

<property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.WebSphereExtendedJTATransactionLookup" />

您使用的是本地交易而非分布式交易。

Whereas you are using local transactions instead of distributed transactions.

at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:380)

您有2种可能的解决方案

You have 2 possible solutions

1. 删除 JpaTransactionManager 并将其替换为JTA事务管理器


2. 从hibernate设置中删除 hibernate.transaction.manager_lookup_class 。

1. remove the JpaTransactionManager and replace it with a JTA transaction manager
2. remove the remove the hibernate.transaction.manager_lookup_class from the hibernate settings.

如果你真的不需要分布式交易，那么选项2是最简单的，如果你需要分布式交易，只需添加< tx：jta-transaction-manager /> 将为您的环境设置合适的JTA tx管理器。删除 JpaTransactionManager 的定义。

If you don't really need distributed transactions option 2 is the easiest, if you need distributed transactions simply adding <tx:jta-transaction-manager /> will setup a proper JTA tx manager for your environment. Remove the definition for the JpaTransactionManager.

更新：

您的配置有两种方式存在缺陷。

Your configuration is flawed in 2 ways.

1. 您的EntityManager配置已包含数据源的jndi查找，您通过配置本地数据源在applicationContext中覆盖


2. 您同时拥有< tx：jta-transaction-manager /> 和 JpaTransactionManager 您要使用哪一个？目前后者正在覆盖第一个。

1. Your EntityManager configuration already contains a jndi lookup for the datasource, which you override in your applicationContext by configuring a local datasource
2. You have both a <tx:jta-transaction-manager /> and JpaTransactionManager which one do you want to use? At the moment the latter is overriding the first one.

创建2个单独的配置，一个用于本地测试，一个用于生产，使用JTA和JNDI查找。 （优选您的测试代码仅覆盖必要的bean）。

Create 2 seperate configurations one for local testing and one for production using JTA en JNDI lookups. (Preferable your testing code only overrides the beans necessary).

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