1. Spring Boot and multiple external configuration files

2. Load multiple configuration files from different directories with Spring Boot

http://roufid.com/load-multiple-configuration-files-different-directories-spring-boot/

@SpringBootApplication
public class Application {
 
    public static void main(String[] args) {
 
        ConfigurableApplicationContext applicationContext = new SpringApplicationBuilder(Application.class)
                .properties("spring.config.name:application,conf",
                        "spring.config.location:classpath:/external/properties/,classpath:/com/roufid/tutorial/configuration/")
                .build().run(args);
 
        ConfigurableEnvironment environment = applicationContext.getEnvironment();
 
        System.out.println(environment.getProperty("app.firstname"));
        System.out.println(environment.getProperty("conf.lastname"));
    }
}

3. Externalized Configuration

4. 24.3 Application Property Files

总结：加载其他的属性文件：

可以用： spring.profiles.include， 加载其他的额外的属性文件；

也可用@PropertySource("application-demo.properties")

并且: 属性文件：必须以application-xxx.properties命名：
因为 idea可以识别出，这是个 spring-boot的属性文件， 因此可以给予提示；