我正在尝试使用Spring测试实体EJB3。

EJB本身不使用Spring，并且我想使生产JPA配置的重复保持最少（例如，不重复persistence.xml）。

我的单元测试似乎可以正常工作，但是即使我的单元测试应该是事务性的，数据仍会在各种测试方法之间持久存在……

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>

当我运行测试时，test2失败，因为它找到了两个我只希望有一个实体的实体（因为第一个实体应该已经回滚了……）

我尝试了很多不同的配置，而这似乎是我能得到的最全面的配置。你做 ？