自动扫描jpa实体的包在春天 [英] auto scan packages for jpa entities in spring

问题描述

使用hibernate SessionFactory时，可以很容易地做到这一点：

 < bean id =sessionFactory
。 .. 
p：packagesToScan =com.sahandrc.survey
  

我该怎么做使用jpa EntityManagerFactory？

解决方案

对于 Spring 3.1

这里是一个例子：

 < bean id =entityManagerFactoryclass =org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean
p：packagesToScan =com.sahandrc.survey
p：dataSource-ref =dataSource
p：jpaPropertyMap- ref =jpaPropertyMap
p：jpaVendorAdapter-ref =hibernateVendor/> 
  

上下文文件中的所有内容示例：

 <？xml version =1.0encoding =UTF-8？> 
< beans xmlns =http://www.springframework.org/schema/beans
 xmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xmlns：p =http://www.springframework.org/schema/p
 xmlns：aop =http://www.springframework.org/schema/aop
 xmlns ：tx =http://www.springframework.org/schema/tx
 xmlns：util =http://www.springframework.org/schema/util
 xmlns：jdbc = http://www.springframework.org/schema/jdbc
 xmlns：context =http://www.springframework.org/schema/context
 xmlns：jpa =http：// www.springframework.org/schema/data/jpa
 xsi：schemaLocation =http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring- beans-3.0.xsd 
 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
 http：/ /www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 
 http：//www.spr ingframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd 
 http://www.springframework.org/schema/util http：// www .springframework.org / schema / util / spring-util-3.0.xsd 
 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context .xsd 
 http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd\"> 
 
< context：property-placeholder 
 location =WEB-INF / database.properties/> 
 
 p：packagesToScan =com.sahandrc.survey
p：dataSource- ref =dataSource
p：jpaPropertyMap-ref =jpaPropertyMap
p：jpaVendorAdapter-ref =hibernateVendor/> 
 
< bean id =dataSource
 class =org.apache.commons.dbcp.BasicDataSource
 destroy-method =close
p：driverClassName =$ {jdbc.driverClassName}
p：url =$ {jdbc.url}
p：username =$ {jdbc.username}
p：password =$ {jdbc密码}
p：maxActive =$ {dbcp.maxActive}
p：maxIdle =$ {dbcp.maxIdle}
p：maxWait =$ {dbcp.maxWait}/ > 
 
< util：map id =jpaPropertyMap> 
< entry key =generateDdlvalue =$ {hibernate.generate_ddl}/> 
< entry key =hibernate.hbm2ddl.autovalue =$ {hibernate.hbm2ddl.auto}/> 
< entry key =hibernate.dialectvalue =$ {hibernate.dialect}/> 
< entry key =hibernate.default_schemavalue =$ {hibernate.default_schema}/> 
< entry key =hibernate.format_sqlvalue =$ {hibernate.format_sql}/> 
< / util：map> 
 
< tx：注解驱动的事务管理器=transactionManager/> 
 
< bean id =transactionManagerclass =org.springframework.orm.jpa.JpaTransactionManager> 
< property name =entityManagerFactoryref =entityManagerFactory/> 
< / bean> 
 
< / beans> 
  

One can easily do this when using hibernate SessionFactory:

<bean id="sessionFactory"
...
p:packagesToScan="com.sahandrc.survey" 

How can I do that with jpa EntityManagerFactory?

解决方案

It's almost the same thing for Spring 3.1 and higher.

Here an example :

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
            p:packagesToScan="com.sahandrc.survey"
            p:dataSource-ref="dataSource"
            p:jpaPropertyMap-ref="jpaPropertyMap"
            p:jpaVendorAdapter-ref="hibernateVendor" />

Example with everything in the context file :

<?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:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jpa="http://www.springframework.org/schema/data/jpa"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
       http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
       http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd">

    <context:property-placeholder
        location="WEB-INF/database.properties"/>

    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
        p:packagesToScan="com.sahandrc.survey"
        p:dataSource-ref="dataSource"
        p:jpaPropertyMap-ref="jpaPropertyMap"
        p:jpaVendorAdapter-ref="hibernateVendor" />

    <bean id="dataSource"
          class="org.apache.commons.dbcp.BasicDataSource"
          destroy-method="close"
          p:driverClassName="${jdbc.driverClassName}"
          p:url="${jdbc.url}"
          p:username="${jdbc.username}"
          p:password="${jdbc.password}"
          p:maxActive="${dbcp.maxActive}"
          p:maxIdle="${dbcp.maxIdle}"
          p:maxWait="${dbcp.maxWait}"/>

    <util:map id="jpaPropertyMap">
        <entry key="generateDdl" value="${hibernate.generate_ddl}"/>
        <entry key="hibernate.hbm2ddl.auto" value="${hibernate.hbm2ddl.auto}"/>
        <entry key="hibernate.dialect" value="${hibernate.dialect}"/>
        <entry key="hibernate.default_schema" value="${hibernate.default_schema}"/>
        <entry key="hibernate.format_sql" value="${hibernate.format_sql}"/>
    </util:map>

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

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

</beans>

这篇关于自动扫描jpa实体的包在春天的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！