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[英]Shutting down Spring application makes JNDI name for datasource go away from jdbc context
[英]can I get a jdbc datasource from jpa in spring application context?
如您所知,在spring applicationContext中,我們可以從persistence.xml定義EntityManagerFactory bean,如下所示:
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitName" value="MyUnit" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="false" />
<property name="database" value="MYSQL" />
</bean>
</property>
</bean>
現在,如果我要初始化數據庫,如下所示:
<jdbc:initialize-database data-source="myDataSource" enabled="true">
<jdbc:script location="classpath*:com/myapp/data*.sql"/>
</jdbc:initialize-database>
我是否必須為此配置另一個數據源bean? 或者我可以參考上面定義的emf,或者可以參考persistence.xml?
<!-- use jndi lookup, or define it by your selfe -->
<jee:jndi-lookup id="dataSource" jndi-name="java:comp/env/jdbc/myDataSource" />
<bean
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
id="entityManagerFactory">
<property name="persistenceUnitName" value="persistenceUnit" />
<property name="dataSource" ref="dataSource" />
<!-- this is important to connect JPA and JdbcTemplate transaction control -->
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="false" />
</bean>
</property>
</bean>
<!-- jdbc templates that are equals for all databases -->
<bean class="org.springframework.jdbc.core.JdbcTemplate" id="jdbcTemplate">
<constructor-arg ref="dataSource" />
</bean>
<bean class="org.springframework.jdbc.core.simple.SimpleJdbcTemplate" id="simpleJdbcTemplate">
<constructor-arg ref="dataSource" />
</bean>
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