如何将属性从外部文件包含到hibernate.cfg.xml?
我需要能够在其中存储数据库配置属性,src|main|java|dbConnection.properties
并以 *
<?xml version='1.0' encoding='utf-8'?><!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">org.postgresql.Driver</property>
<property name="connection.username">postgres</property>
<property name="connection.password">postgres</property>
<property name="transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
</session-factory>
</hibernate-configuration>
<?xml version='1.0' encoding='utf-8'?> <!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">${DRIVER}</property>
<property name="connection.username">${USERNAME}</property>
<property name="connection.password">${PASSWORD}</property>
<property name="transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
</session-factory>
</hibernate-configuration>
回答:
您声明使用Spring,然后为什么不让Spring进行所有艰苦的工作。让属性占位符替换所需的占位符。
<context:property-placeholder location="classpath:dbConnection.properties" /><bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="hibernateProperties">
<map>
<entry key="connection.driver_class" value="${DRIVER}" />
<entry key="connection.username" value="${USERNAME}" />
<entry key="connection.password" value="${PASSWORD}" />
<entry key="transaction.factory_class" value="org.hibernate.transaction.JDBCTransactionFactory" />
</map>
<property>
</bean>
免费提供建议,而不使用内部hibernate连接(不建议在生产中使用),在Spring中配置数据源并将其连接到您的 LocalSessionFactoryBean
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