Question

我对hibernate和spring批处理相对较新。我正在尝试为我的应用程序和作业存储库配置类似的数据库配置（在春季批处理中）。这是一个JPA + Hibernate + Spring组合。

以下是相关的（hibernate + jpa特定的）db-configurations.xml的外观......

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="packagesToScan">
        <list>
            <value>some.model.SomeClass
            </value>
        </list>
    </property>
    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="showSql" value="true" />
            <property name="generateDdl" value="false" />
            <property name="databasePlatform" value="org.hibernate.dialect.PostgreSQLDialect" />
            <property name="database" value="POSTGRESQL" />
        </bean>
    </property>
    <property name="jpaProperties">
        <map>
            <entry key="hibernate.format_sql" value="true" />
        </map>
    </property>
    <property name="jpaDialect">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
    </property>
</bean>

而且，这是我在项目中使用的组件的版本

    <spring.batch.version>3.0.1.RELEASE</spring.batch.version>
    <spring.version>4.1.1.RELEASE</spring.version>
    <spring.data.version>1.7.0.RELEASE</spring.data.version>
    <commons.dbcp.version>1.4</commons.dbcp.version>
    <postgresql.driver.version>9.1-901-1.jdbc4</postgresql.driver.version>
    <hibernate.entitymanager.version>4.3.6.Final</hibernate.entitymanager.version>
    <hibernate.jpa.api>1.0.1.Final</hibernate.jpa.api>

但是，当我尝试运行测试时，我收到此错误。谷歌搜索后，我找不到如何解决这个问题。有人可以建议什么吗？

org.springframework.transaction.InvalidIsolationLevelException: HibernateJpaDialect does not support custom isolation levels due to limitations in standard JPA. Specific arrangements may be implemented in custom JpaDialect variants.
at org.springframework.orm.jpa.DefaultJpaDialect.beginTransaction(DefaultJpaDialect.java:63)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.beginTransaction(HibernateJpaDialect.java:110)
at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:380)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:373)
at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:438)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:261)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at com.sun.proxy.$Proxy14.getLastJobExecution(Unknown Source)
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:98)
at au.com.optus.selene.selenebatch.notification.NotificationTest.importProducts(NotificationTest.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
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.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:72)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:81)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:216)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:82)
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.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:60)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:67)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:162)
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:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

Answer 1

使用Spring Batch时遇到了类似的问题。问题在 org.springframework.batch.core.repository.support.JobRepositoryFactoryBean 类中使用非默认隔离级别“ISOLATION_SERIALIZABLE”（来自 AbstractJobRepositoryFactoryBean ）：

private String isolationLevelForCreate = DEFAULT_ISOLATION_LEVEL;
[...]
/**
 * Default value for isolation level in create* method.
 */
private static final String DEFAULT_ISOLATION_LEVEL = "ISOLATION_SERIALIZABLE";

我通过将该属性显式设置为 org.springframework.transaction.TransactionDefinition 的默认隔离级别来解决它：

<bean id="jobRepository" class="org.springframework.batch.core.repository.support.JobRepositoryFactoryBean">
    [...]
        <property name="isolationLevelForCreate" value="ISOLATION_DEFAULT"/>
    [...]
</bean>

这也可能是导致问题的原因。

例外：由于标准JPA的限制，HibernateJpaDialect不支持自定义隔离级别

1 个答案: