Spring Boot参数化配置

Question

year2020.datasource.jdbcUrl=jdbc:postgresql://${built.url.2020}:5432/db_name
year2020.datasource.username=some_username
year2020.datasource.password=some_password
year2020.datasource.driverClassName=org.postgresql.Driver
year2020.datasource.validationQuery=SELECT 1

# And multiple similar configs for other resources and previous years

@Configuration
public class CopyPastedDataSource {

    @Bean(name = "year2020_datasource")
    @ConfigurationProperties(prefix = "year2020.datasource")
    public DataSource dataSource2020() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "year2019_datasource")
    @ConfigurationProperties(prefix = "year2019.datasource")
    public DataSource dataSource2020() {
        return DataSourceBuilder.create().build();
    }

    // And more beans for previous years
}

Answer 1

所以我找到的正是这个方法：

https://stackoverflow.com/A/26276872/7660079

https://stackoverflow.com/A/53554102/7660079

api.url.2020=api-2020.endpoint.com
api.url.2019=api-2019.endpoint.com
api.url.2018=api-2018.endpoint.com

@Configuration
@EnableConfigurationProperties

public class ApiConfiguration {
    @Bean
    @ConfigurationProperties(prefix = "api.url")
    public Map<Integer, String> getConfiguration() {
        return new HashMap<>();
    }
}

@Component
class APIConsumer {
    @Autowired
    Map<Integer, String> apiUrlsByYear;
}