In one of my Spring Boot microservices, I want to keep track of a list of servers that can be externally configurable. I can have zero to infinity servers, so I want my application to allow me to easily define this. I also want to be able to check that the configuration is correct, so I don’t accidentally forget to enter a url or a name for my server. In this post, I will show you how you can use
![Spring Boot Recipe: Reading and Validating Lists of Configuration Properties](https://cdn-ak-scissors.b.st-hatena.com/image/square/8d71ff5111e05619a10d29bb40d7aebaa75c8fbc/height=288;version=1;width=512/https%3A%2F%2Fs0.wp.com%2Fi%2Fblank.jpg)