Using system variable in Spring Boot's application.properties

Question

I have this property in my application.property file

logfile.dir=/Users/Nunito/logs/bonanza/

I would like to know if it is possible to do something like:

logfile.dir=/Users/{userName}/logs/bonanza/

tpschmidt · Accepted Answer · 2019-06-12 17:45:17Z

1

It's possible. Just use ${userName}.

answered Jun 12, 2019 at 17:45

tpschmidt

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Pratik Ambani · Accepted Answer · 2019-06-13 05:25:58Z

Of course you can read environment variables from properties file. Provided username is configured as environment variable in the system you want to execute the code on.

simply replace,

this: logfile.dir=/Users/Nunito/logs/icrypts/

with: logfile.dir=/Users/${userName}/logs/icrypts/

You can also read properties file using any of below ways.

@Value("${username}") private String username;

You can also use, SPRING_APPLICATION_JSON

At application startup, Spring Boot will look for an environment variable called SPRING_APPLICATION_JSON. It can be used to provide a set of application properties using inline JSON. For example, you can set ec2.public.url property as follows.

You can refer samples from here, https://github.com/indrekots/spring-boot-envvariables

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