如何加载外部属性文件并将值加载到另一个属性文件

Question

I want load an external property file and set it values to another properties file, that is possible? eg:

C:\\properties\\file.properties

id=userID

password=pass

./main/resources/application.properties

user.id=${id}

user.password=${password}

I tray run this command, but it isn't working

java -jar -Dspring.config.location=C:/properties/file.properties  java-1.0-SNAPSHOT.jar


exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'id' in value "${id}"

Answer 1

You can use @PropertySource annotation from spring boot libraries. Documentation and examples: https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/context/annotation/PropertySource.html