如何在Spring中读取具有相同键的多个属性？

问题描述

我在这里遇到一个简单的问题。我有两个属性文件，我想读取来创建两个数据源。然而，那些属性文件具有完全相同的键！我可以使用以下方法读取这两个文件：

I am facing a simple problem here. I have two properties files I want to read to create two datasources. Yet those properties files have exactly the same keys! I am able to read both the files using:

<context:property-placeholder
    location="classpath:foo1.properties,classpath:foo2.properties"/>

但是我无法访问正确的值：

But then I am not able to access the right value:

<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource"
    destroy-method="close">
    <property name="driverClassName" value="${driver}" /> <!-- Which one? -->
    <property name="url" value="${url}" />                <!-- Which one? -->
    ...
</bean>

如何阅读我的属性，以便我可以使用 $等变量{foo1.driver} 并知道哪一个被调用？

How can I read my properties so that I can use variables such as ${foo1.driver} and know which one is called?

感谢您的帮助！

推荐答案

尝试这样的事情（未经测试）：

Try something like this(not tested):

<bean id="config1" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
       <property name="ignoreUnresolvablePlaceholders" value="true"/>
       <property name="placeholderPrefix" value="${foo1."/>
       <property name="locations">
        <list>
          <value>classpath:foo1.properties</value>
        </list>
      </property>
    </bean>

    <bean id="config2" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
       <property name="ignoreUnresolvablePlaceholders" value="false"/>
       <property name="placeholderPrefix" value="${foo2."/>
       <property name="locations">
        <list>
          <value>classpath:foo2.properties</value>
        </list>
      </property>
    </bean>

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