Spring Boot-外部化配置属性

Question

My Application is a Spring Boot Application with embedded tomcat. It uses a property file named "config.properties" for storing various application level properties. I am loading property file in my application as :

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location">
        <value>classpath:config.properties</value>
    </property>
</bean>

Application works fine when the property file is embedded in the jar file, but I want to externalize the property file - provide it from a folder in the system not from the jar.

I tried adding the folder to the classpath and then supplying the location of the folder using -cp vm argument but that does not work.

So my question is how to achieve this scenario where property file is supplied from external source rather than supplied from within the jar.

Answer 1

I have been able load file using the following code :

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location">
        <value>file:{config.file.location}/config.properties</value>
    </property>
</bean>

and starting the jar by using -

java -jar -Dconfig.file.location=D:\folder\ myjar.jar

Answer 2

Use this code:

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location">
        <value>file:/full/path/to/your/file</value>
    </property>
</bean>

Using "file" you canspecify a full pathe where your config file is located.

EDIT: If you whant to use in-line arguments, remove the bean PropertyPlaceholderConfigurer and use this instead:

-Dspring.config.location=file:/path/to/file/config.properties