问如何在Maven中配置JPA进行测试

EN

<plugin>
  <artifactId>maven-antrun-plugin</artifactId>
  <version>1.3</version>
  <executions>
    <execution>
      <id>copy-test-persistence</id>
      <phase>process-test-resources</phase>
      <configuration>
        <tasks>
          <!--backup the "proper" persistence.xml-->
          <copy file="${project.build.outputDirectory}/META-INF/persistence.xml" tofile="${project.build.outputDirectory}/META-INF/persistence.xml.proper"/>
          <!--replace the "proper" persistence.xml with the "test" version-->
          <copy file="${project.build.testOutputDirectory}/META-INF/persistence.xml" tofile="${project.build.outputDirectory}/META-INF/persistence.xml"/>
        </tasks>
      </configuration>
      <goals>
        <goal>run</goal>
      </goals>
    </execution>
    <execution>
      <id>restore-persistence</id>
      <phase>prepare-package</phase>
      <configuration>
        <tasks>
          <!--restore the "proper" persistence.xml-->
          <copy file="${project.build.outputDirectory}/META-INF/persistence.xml.proper" tofile="${project.build.outputDirectory}/META-INF/persistence.xml"/>
        </tasks>
      </configuration>
      <goals>
        <goal>run</goal>
      </goals>
    </execution>
  </executions>
</plugin>

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <!--
        JPA requires META-INF/persistence.xml, but somehow prefers the one
        in classes/META-INF over the one in test-classes/META-INF. Spring
        to the rescue, as it allows for setting things differently, like by
        referring to "classpath:persistence-TEST.xml". Or, simply referring
        to "META-INF/persistence.xml" makes JPA use the test version too: 
    -->
    <property name="persistenceXmlLocation" value="META-INF/persistence.xml" />

    <!-- As defined in /src/test/resources/META-INF/persistence.xml -->
    <property name="persistenceUnitName" value="myTestPersistenceUnit" />
    <property name="jpaVendorAdapter">
        <bean
            class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
        </bean>
    </property>
</bean>

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <!-- For example: com.mysql.jdbc.Driver or org.h2.Driver -->
    <property name="driverClassName" value="#{myConfig['db.driver']}" />
    <!-- For example: jdbc:mysql://localhost:3306/myDbName or 
        jdbc:h2:mem:test;DB_CLOSE_DELAY=-1 -->
    <property name="url" value="#{myConfig['db.url']}" />
    <!-- Ignored for H2 -->
    <property name="username" value="#{myConfig['db.username']}" />
    <property name="password" value="#{myConfig['db.password']}" />
</bean>

<bean id="jpaAdaptor"
    class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
    <!-- For example: org.hibernate.dialect.MySQL5Dialect or 
        org.hibernate.dialect.H2Dialect -->
    <property name="databasePlatform" value="#{myConfig['db.dialect']}" />
</bean>

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="jpaVendorAdapter" ref="jpaAdapter" />
    <property name="jpaProperties">
        <props>
            <!-- For example: validate, update, create or create-drop -->
            <prop key="hibernate.hbm2ddl.auto">#{myConfig['db.ddl']}</prop>
            <prop key="hibernate.show_sql">#{myConfig['db.showSql']}</prop>
            <prop key="hibernate.format_sql">true</prop>
        </props>
    </property>
</bean>