spring boot datasource configuration

Have spent quite sometime to auto apply the datasource configuration from yml, turns out it could be achieved through the

@ConfigurationProperties

annotations.

So with a configuration in yaml,

spring:
  profiles: dev
  datasource:
    hikari:
      auto-commit: true
      connection-timeout: 30000
      maximum-pool-size: 20
    url: jdbc:sqlserver://..
    username: 
    password:

and a bean configuration

@Bean(name = "RODataSource")
    @ConfigurationProperties("spring.datasource.hikari")
    public DataSource getDataSource(){
        HikariDataSource dataSource = DataSourceBuilder.create()
                .type(HikariDataSource.class)
                .url(url)
                .username(username).password(pwd)
                .driverClassName(driver)
                .build();
        return dataSource;
    }

The configurationProperties is able to reflect what’s the Bean and apply the corresponding properties.

(auto-commit, pool size and timeout value for example)