Spring Profile Test

类似于Maven Profile，通过设置参数区分不同环境加载不同的类或资源文件

@Configuration
public class App
{
    public static void main( String[] args )
    {
        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
        ctx.getEnvironment().setActiveProfiles("dev");
        ctx.scan("SpringTest");
        ctx.refresh();
        UserService service = ctx.getBean(UserService.class);
        System.out.println(service.getName());
    }
    @Bean
    @Profile("dev")
    public UserService userService(){
        UserService service = new UserService();
        service.setName("dev bean");
        return service;
    }
    @Bean
    @Profile("prod")
    public UserService userService2(){
        UserService service = new UserService();
        service.setName("prod bean");
        return service;
    }
}