SpringBoot中的注解@SpringBootApplication和（@Configuration......）

以下选自官方的文档

这里写链接内容

Many Spring Boot developers always have their main class annotated with

@Configuration,

@EnableAutoConfiguration,

@ComponentScan.

Since these annotations are so frequently used together (especially if you follow the best practices above), Spring Boot provides a convenient @SpringBootApplication alternative.

翻译：许多SpringBoot的开发者都喜欢在主方法中注解。

因为这些注解是很频繁的在一起使用，SpringBoot提供了一个更加便捷的注解@SpringBootApplication，来替代三个一起使用。

意思就是：一个抵三个。

@Configuration：配置

@EnableAutoConfiguration：自动加载配置

@ComponentScan：扫描指定的包

The @SpringBootApplication annotation is equivalent to using @Configuration, @EnableAutoConfiguration, and @ComponentScan with their default attributes, as shown in the following example:

package com.example.myapplication;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication // same as @Configuration @EnableAutoConfiguration @ComponentScan
public class Application {

public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}

}

ps：@SpringBootApplication also provides aliases to customize the attributes of @EnableAutoConfiguration and @ComponentScan.