Question

我正在尝试使用Spring测试实体EJB3。

EJB本身不使用Spring，我希望将生产JPA配置的重复保持最小（即不复制persistence.xml作为例子）。

我的单元测试似乎有效，但即使我的单元测试应该是事务性的，数据仍然存在于各种测试方法之间......

这是我的实体：

package sample;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

@Entity
public class Ejb3Entity {

    public Ejb3Entity(String data) {
        super();
        this.data = data;
    }
    private Long id;
    private String data;

    @Id
    @GeneratedValue
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }

    public String getData() {
        return data;
    }
    public void setData(String data) {
        this.data = data;
    }

}

我的单元测试：

package sample;

import static org.junit.Assert.*;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"/appContext.xml"})
@Transactional
public class Ejb3EntityTest {

    @PersistenceContext
    EntityManager em;

    @Before
    public void setUp() throws Exception {
        Ejb3Entity one = new Ejb3Entity("Test data");
        em.persist(one);
    }

    @Test
    public void test1() throws Exception {

        Long count = (Long) em.createQuery("select count(*) from Ejb3Entity").getSingleResult();
        assertEquals(Long.valueOf(1l), count);
    }

    @Test
    public void test2() throws Exception {

        Long count = (Long) em.createQuery("select count(*) from Ejb3Entity").getSingleResult();
        assertEquals(Long.valueOf(1l), count);
    }

}

和我的appContext.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/tx
           http://www.springframework.org/schema/tx/spring-tx.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd">

    <bean id="jotm" class="org.springframework.transaction.jta.JotmFactoryBean" />

    <bean id="transactionManager"
        class="org.springframework.transaction.jta.JtaTransactionManager">
        <property name="userTransaction" ref="jotm" />
        <property name="allowCustomIsolationLevels" value="true" />
    </bean>

    <bean id="dataSource" class="org.enhydra.jdbc.standard.StandardXADataSource">
        <property name="driverName" value="org.h2.Driver" />
        <property name="url" value="jdbc:h2:mem:unittest;DB_CLOSE_DELAY=-1" />
        <property name="user" value="" />
        <property name="password" value="" />
        <property name="transactionManager" ref="jotm" />
    </bean>

    <bean id="emf"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="persistenceUnitPostProcessors">
            <bean class="sample.JtaDataSourcePersistenceUnitPostProcessor">
                <property name="jtaDataSource" ref="dataSource" />
            </bean>
        </property>
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="showSql" value="false" />
                <property name="generateDdl" value="true" />
                <property name="database" value="H2" />
                <property name="databasePlatform" value="org.hibernate.dialect.H2Dialect" />
            </bean>
        </property>
        <property name="jpaPropertyMap">
            <map>
                <entry key="hibernate.transaction.manager_lookup_class"
                    value="org.hibernate.transaction.JOTMTransactionManagerLookup" />
                <entry key="hibernate.transaction.auto_close_session" value="false" />
                <entry key="hibernate.current_session_context_class" value="jta" />
            </map>
        </property>

    </bean>


</beans>

当我运行我的测试时，test2失败了，因为它找到了我预期只有一个实体的2个实体（因为第一个应该被回滚...）

我尝试了很多不同的配置，这个似乎是我能得到的最全面的...我没有其他的想法。你呢？

Answer 1

当我尝试集成JOTM和Hibernate时，我最终不得不编写我的ConnectionProvider实现的代码。以下是它现在的样子：http://pastebin.com/f78c66e9c

然后你将你的实现指定为hibernate属性中的连接privider，并且事务神奇地开始工作。

问题是默认连接提供程序在数据源上调用getConnection（）。在您自己的实现中，您调用getXAConnection（）。getConnection（）。这有所不同

Answer 2

我设法使用Bitronix代替JOTM。 Bitronix提供了一个LrcXADataSource，允许非XA数据库参与JTA事务。

我认为问题在于H2不符合XA标准且enhydra StandardXADataSource不能神奇地使用它（我也使用HSQLDB结束，但这与问题无关）。

这是我的春天语境：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/tx
           http://www.springframework.org/schema/tx/spring-tx.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config />
    <tx:annotation-driven transaction-manager="transactionManager" />

    <!--  Bitronix Transaction Manager embedded configuration -->
    <bean id="btmConfig" factory-method="getConfiguration"
        class="bitronix.tm.TransactionManagerServices">
        <property name="serverId" value="spring-btm" />
        <property name="journal" value="null" />
    </bean>

    <!-- create BTM transaction manager -->
    <bean id="BitronixTransactionManager" factory-method="getTransactionManager"
        class="bitronix.tm.TransactionManagerServices" depends-on="btmConfig,dataSource"
        destroy-method="shutdown" />

    <bean id="transactionManager"
        class="org.springframework.transaction.jta.JtaTransactionManager">
        <property name="transactionManager" ref="BitronixTransactionManager" />
        <property name="userTransaction" ref="BitronixTransactionManager" />
        <property name="allowCustomIsolationLevels" value="true" />
    </bean>


    <!-- DataSource definition -->

    <bean id="dataSource" class="bitronix.tm.resource.jdbc.PoolingDataSource"
        init-method="init" destroy-method="close">
        <property name="className" value="bitronix.tm.resource.jdbc.lrc.LrcXADataSource" />
        <property name="uniqueName" value="unittestdb" />
        <property name="minPoolSize" value="1" />
        <property name="maxPoolSize" value="3" />
        <property name="allowLocalTransactions" value="true" />
        <property name="driverProperties">
            <props>
                <prop key="driverClassName">org.hsqldb.jdbcDriver</prop>
                <prop key="url">jdbc:hsqldb:mem:unittestdb</prop>
                <prop key="user">sa</prop>
                <prop key="password"></prop>
            </props>
        </property>
    </bean>

    <!-- Entity Manager Factory -->
    <bean id="emf"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="showSql" value="true" />
                <property name="generateDdl" value="true" />
                <property name="database" value="HSQL" />
            </bean>
        </property>
        <property name="jpaPropertyMap">
            <map>
                <entry key="hibernate.transaction.manager_lookup_class"
                    value="org.hibernate.transaction.BTMTransactionManagerLookup" />
                <entry key="hibernate.transaction.auto_close_session" value="false" />
                <entry key="hibernate.current_session_context_class" value="jta" />
            </map>
        </property>

    </bean>

Answer 3

编辑（抱歉，我写这段时似乎只是半醒。当然你是对的，默认情况下应该回滚一切。）

您可以检查事务管理器的实际操作，例如为其启用调试输出。

假设log4j：

log4j.logger.org.springframework.transaction=DEBUG

事务管理器为您提供有关已创建和已加入事务的非常好的日志输出，以及有关提交和回滚的日志输出。这应该可以帮助您找出与您的设置无关的内容。

Answer 4

在弹簧文档中提到的@Transactional注释之后添加@Rollback注释（来自 org.springframework.test.annotation ）。

@Rollback is a test annotation that is used to indicate whether a test-
managed transaction should be rolled back after the test method has 
completed. 
Consult the class-level Javadoc for 
org.springframework.test.context.transaction.TransactionalTest-
ExecutionListener for an explanation of test-managed transactions. 

When declared as a class-level annotation, @Rollback defines the default 
rollback semantics for all test methods within the test class hierarchy. When 
declared as a method-level annotation, @Rollback defines rollback semantics 
for the specific test method, potentially overriding class-level default 
commit or rollback semantics. 

As of Spring Framework 4.2, @Commit can be used as direct replacement for 
@Rollback(false). 

Warning: Declaring @Commit and @Rollback on the same test method or on the 
same test class is unsupported and may lead to unpredictable results. 

This annotation may be used as a meta-annotation to create custom composed 
annotations. Consult the source code for @Commit for a concrete example.

Spring / JTA / JPA单元测试：回滚不起作用

4 个答案: