Hands-On Microservices with Kotlin

Using properties

We can define configuration values using the properties file. Spring Initializr has already created an application.properties in the resources folder of our project, we can edit it to add this:

SERVICE.MESSAGE.TEXT="hello"

You may notice that the label of this properties file is in uppercase but the value is referenced in lower case, this is because when we query the configuration we ignore case, and in properties files, it is more standard to have labels in capital letters.

Then, if we run our application it will work as expected, however, the properties file is just a plain text file that may look too complex for multi-level configurations.