如何在我的Spring Boot应用程序中从AWS访问环境变量

Question

I am working on application which is deployed on AWS. I have set database configuration ( URL , UserName , Password ) in AWS Environment properties.

Now how can I access these variables in my spring boot application?

My application.properties file looks like:

spring.datasource.driver-class-name = <DRIVER>
spring.datasource.url = <URL>
spring.datasource.username = <USERNAME>
spring.datasource.password = <PASSWORD>

Note: Currently I am accessing database details from application.properties file

Answer 1

To use environment variables in spring boot application.properties you can use the usual Spring placeholder notation:

spring.datasource.url = ${JDBC_CONNECTION:default_value_connection}

Further explanation: https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-external-config-placeholders-in-properties

You can set JDBC_CONNECTION value in AWS Elastic beanstalk. If JDBC_CONNECTION environment variable not set it will use the 'default_value_connection' .