java - JUnit-org.hibernate.SessionException : Session is closed

Question

我在 Hibernate session 中遇到一个常见错误:javax.persistence.TransactionRequiredException:执行更新/删除 查询。

我找到了一个解决方案，使我的测试类扩展 AbstractTransactionalJUnit4SpringContextTests 但我不明白为什么有必要。

我尝试在我的项目上设置junit(4.11版本)测试。

• 我的测试类:

_

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:config/ioc/application-context-spring-test.xml" })
@TestExecutionListeners({ DependencyInjectionTestExecutionListener.class })
@TransactionConfiguration(transactionManager = "myTxManager")
@Transactional
public class UserPreferenceDAOTest extends AbstractTransactionalJUnit4SpringContextTests {

    @Autowired
    private UserPreferenceDAO dao;

    @Test
    @Transactional
    public void test() {

        try {
            SQLQuery query = dao.createSQLQuery("SELECT 1 from dual");
            query.uniqueResult();
        } catch (Exception e) {
            e.printStackTrace();
            fail();
        }
    }
}

UserPreferenceDAO 已实例化。 query.uniqueResult(); 行抛出 javax.persistence.TransactionRequiredException 异常。

• application-context-spring.xml:

包含数据库访问配置:

    <!-- To precise the persistence configuration name file -->
    <bean id="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
        <property name="persistenceXmlLocations">
            <list>
                <value>classpath*:META-INF/persistence-web.xml</value>
            </list>
        </property>
        <property name="defaultDataSource" ref="dataSource" />
    </bean>

    <!-- EntityManagerFactory definition : JPA one -->
    <bean id="myEmf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="persistenceUnitManager" ref="persistenceUnitManager" />
        <property name="persistenceUnitName" value="myPersistenceUnit" />
    </bean>

    <!-- Transaction Manager definition : JPA one-->
    <bean id="myTxManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="myEmf" />
    </bean>

    <!-- Enable the annotation usage (bean injection for instance) -->
    <context:annotation-config />

    <!-- Enable annotation usage for transaction -->
    <tx:annotation-driven transaction-manager="myTxManager" proxy-target-class="false"/>

    <!-- Enterprise layer's dependencies -->
    <!-- UserPreferenceDAO bean statement here -->
    <import resource="classpath:ioc/0-model-enterpriselayer-dependencies.xml"/>

    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
        <property name="url" value="jdbc:oracle:thin:@myurl:1522:TD11P15A" />
        <property name="username" value="user" />
        <property name="password" value="pwd" />
    </bean>

• persistence.xml:

_

<persistence>

    <persistence-unit name="myPersistenceUnit" transaction-type="RESOURCE_LOCAL">

        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <!-- with Annotations -->
        <class>com.airfrance.padme.server.entity.UserPreference</class>
        <!-- etc... (all my entities) -->
        <properties>
            <property name="hibernate.show_sql" value="false" />
            <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" />
        </properties>
    </persistence-unit>
</persistence>

我发现的大多数教程都没有使用这个 AbstractTransactionalJUnit4SpringContextTests 类。示例如下:http://www.concretepage.com/spring-4/spring-4-junit-4-annotation-example

我哪里错了？

谢谢

Answer 1

根据文档AbstractTransactionalJUnit4SpringContextTests包括以下测试执行监听器:

• ServletTestExecutionListener
• DependencyInjectionTestExecutionListener
• DirtiesContextTestExecutionListener
• 事务测试执行监听器
• SqlScriptsTestExecutionListener

如果您不想从 AbstractTransactionalJUnit4SpringContextTests 扩展，但仍希望事务行为，只需将 TransactionalTestExecutionListener 添加到您的监听器:

@TestExecutionListeners({ DependencyInjectionTestExecutionListener.class, TransactionalTestExecutionListener.class})

TransactionalTestExecutionListener 的 javadoc:

TestExecutionListener that provides support for executing tests within test-managed transactions by honoring Spring's @Transactional annotation.