Java：依赖项目中的spring-boot-starter-data-jpa依赖

Question

I have build two projects using Java

1. myproject-db - for db interactions
2. myproject-api - for exposing api calls

myproject-db uses spring-boot-starter-data-jpa as a dependency and I am able to build and install it all fine.

myproject-api - is a spring boot project and it uses myproject-db as a dependency. When I run my myproject-api project it gives me error

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

I have defined my dataSource url application.properties file in myproject-db like below

spring.datasource.url=jdbc:mysql://localhost:3306/somedb?useSSL=false
spring.datasource.username=root
spring.datasource.password=somepass

application.properties file of myproject-api is empty.

Question is why am I getting this error.

Answer 1

You should have one delivery application configured with Spring Boot with dependent modules

You can have for example

myproject-parent
       |
    myproject-api
    myproject-ui

If your delivery project (main war/jar) is myproject-api then application.properties and @Configuration must be configured in myproject-api and in @SpringBootApplication scope

You cannot have two @SpringBootApplication scopes