如何从多个文件中收集spring属性以在单个bean上使用 [英] How to collect spring properties from multiple files for use on a single bean

问题描述

我还没有把头包裹在Spring周围，所以如果这个问题没有意义，请纠正我...

I haven't gotten my head wrapped around Spring yet, so correct me if this question doesn't make sense...

我有一个PropertyPlaceholderConfigurer

I have a PropertyPlaceholderConfigurer

<bean id="rdbmPropertiesPlacholder" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" lazy-init="false">
    <property name="location" value="classpath:/properties/rdbm.properties" />
</bean>

我猜有豆子注入？

<bean id="PortalDb" class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="${hibernate.connection.driver_class}" />
    <property name="url" value="${hibernate.connection.url}" />
    <property name="username" value="${hibernate.connection.username}" />
    <property name="password" value="${hibernate.connection.password}" />
    ...

我想要的是第二个占位符指向不同的属性文件用户名/密码，以便我可以将属性拆分为两个不同的文件。然后数据库连接信息可以与db用户名/密码分开，我可以控制一个而不是另一个。

What I want is a second placeholder pointing to a different properties file with the username/password so that I can split up the properties into two different files. Then the database connection information can be separate from the db username/password, and I can source control one and not the other.

我已经尝试过基本上复制rdbmPropertiesPlaceholder了一个不同的id和文件，并尝试访问属性，但它不起作用。

I've tried basically copying the rdbmPropertiesPlaceholder with a different id and file and trying to access the properties, but it doesn't work.

此代码来自uPortal开源Web门户项目。

This code is from the uPortal open source web portal project.

推荐答案

使用此表示法可以指定多个文件：

Using this notation lets you specify multiple files:

 <bean id="rdbmPropertiesPlacholder" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" lazy-init="false">
     <property name="locations">
       <list>
           <value>classpath:/properties/rdbm.properties</value>
           <value>classpath:/properties/passwords.properties</value>
       </list>
    </property>
 </bean>

propertyplaceholderconfigurerer只是合并所有这些看起来只有一个，所以你的bean定义不知道属性来自哪里。

The propertyplaceholderconfigurerer just merges all of these to look like there's only one, so your bean definitions do not know where the properties come from.

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