Building a REST Service with Spring Boot and MongoDB
This source code's tutorials:
https://medium.com/@yigitcannalci/building-a-rest-service-with-spring-boot-and-mongodb-part-1-2de01e4f434d https://medium.com/@yigitcannalci/writing-a-unit-test-using-spring-boot-part-2-b16847484cb9
Note: If you want to save data using Postman, you can use the sample data in the data.json file.