使用Spring Boot Profile和Gradle管理依赖项

Question

I created a java project that will use spring boot and Gradle. I would like to configure profiles, for the different environment (development on my local machine, systemtest for integration test on server farm machine etc). I would use h2 in memory database for development environment and SqlServer for systemtest environment. In build.gradle I defined the following dependencies

dependencies {
    compile("org.springframework.boot:spring-boot-starter-data-jpa")
    compile("org.springframework.boot:spring-boot-starter-web-services")
    compile('org.springframework.boot:spring-boot-starter-actuator')
    runtime('com.h2database:h2:1.4.195')
    runtime('com.microsoft.sqlserver:mssql-jdbc')
}

I created a application.yml file, application-development.yml and application-systemtest.yml where I would put common properties and environment specific properties. The file application-systemtest.yml defines the connecction parameters for sql server

spring:
  datasource:
    url: jdbc:sqlserver://<host>,1433;databaseName=MYDB
    username: myuser
    password: mypass
    driverClassName: com.microsoft.sqlserver.jdbc.SQLServerDriver
  jpa:
    show-sql: true
    hibernate:
      dialect: org.hibernate.dialect.SQLServer2012Dialect

I would also create an uber-jar and select the profile as a launch parameter, ie

java -Dspring.profiles.active=systemtest -jar <my uber jar>

The development profiles starts fine and I am running on h2 in memory database. When trying systemtest profile, spring boot fails to load contexts and fails. This is caused by spring boot finding h2 dependency and trying to configure datasource defined in application-systemtest.yml

So I modified the build.gradle dependencies closure

def profile = project.findProperty('spring.profiles.active')

dependencies {
    compile("org.springframework.boot:spring-boot-starter-data-jpa")
    compile("org.springframework.boot:spring-boot-starter-web-services")
    compile('org.springframework.boot:spring-boot-starter-actuator')
    if (profile == 'development') {
        runtime('com.h2database:h2:1.4.195')
    } else {
        runtime('com.microsoft.sqlserver:mssql-jdbc')
    }
}

This time spring boot start correctly. Don't like very much this solution as I have to handle the profile configuration partly with Gradle. I would like to know if there is a way to configure spring boot so that profile is completely managed within itself, resolving h2 in development environment and sqlserver in systemtest environment, leaving Gradle unaware of spring profiles.

How to solve this problem ?

Answer 1

It wouldn't be advisable to have a different artifact / binary depending on the DB product. Try to configure the datasources / Spring profiles as suggested by @M. Deinum to prevent the datasource to be configured as H2 when using a different DB.