使用 @SpringBootApplication 注释 (Using the @SpringBootApplication Annotation) _ Spring Boot 3.4.0-SNAPSHOT 中文文档(官方文档中文翻译) —

此版本仍在开发中，尚未被视为稳定版本。对于最新的稳定版本，请使用 Spring Boot 3.3.4！spring-doc.cn

许多 Spring Boot 开发人员喜欢他们的应用程序使用自动配置、组件扫描，并能够在他们的“应用程序类”上定义额外的配置。单个 annotation 可用于启用这三个功能，即：@SpringBootApplicationspring-doc.cn

@EnableAutoConfiguration：启用 Spring Boot 的自动配置机制spring-doc.cn
@ComponentScan：在应用程序所在的包上启用 Scan（请参阅最佳实践@Component)spring-doc.cn
@SpringBootConfiguration：启用在上下文中注册额外的 bean 或导入额外的配置类。 Spring 标准的替代方案，有助于在集成测试中进行配置检测。@Configurationspring-doc.cn

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

// Same as @SpringBootConfiguration @EnableAutoConfiguration @ComponentScan
@SpringBootApplication
public class MyApplication {

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

}

import org.springframework.boot.autoconfigure.SpringBootApplication
import org.springframework.boot.runApplication

// same as @SpringBootConfiguration @EnableAutoConfiguration @ComponentScan
@SpringBootApplication
class MyApplication

fun main(args: Array<String>) {
	runApplication<MyApplication>(*args)
}

@SpringBootApplication还提供了别名来自定义和的属性。@EnableAutoConfiguration@ComponentScan

这些功能都不是必需的，您可以选择用它启用的任何功能替换此单个注释。例如，您可能不想在应用程序中使用 component scan 或 configuration properties scan：spring-doc.cn

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import org.springframework.boot.SpringApplication;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Import;

@SpringBootConfiguration(proxyBeanMethods = false)
@EnableAutoConfiguration
@Import({ SomeConfiguration.class, AnotherConfiguration.class })
public class MyApplication {

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

}

import org.springframework.boot.SpringBootConfiguration
import org.springframework.boot.autoconfigure.EnableAutoConfiguration
import org.springframework.boot.docs.using.structuringyourcode.locatingthemainclass.MyApplication
import org.springframework.boot.runApplication
import org.springframework.context.annotation.Import

@SpringBootConfiguration(proxyBeanMethods = false)
@EnableAutoConfiguration
@Import(SomeConfiguration::class, AnotherConfiguration::class)
class MyApplication

fun main(args: Array<String>) {
	runApplication<MyApplication>(*args)
}

在此示例中，与任何其他 Spring Boot 应用程序一样，只是不会自动检测 -annotated 类和 -annotated 类，并且显式导入用户定义的 bean（请参阅）。MyApplication@Component@ConfigurationProperties@Importspring-doc.cn

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import org.springframework.boot.SpringApplication;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Import;

@SpringBootConfiguration(proxyBeanMethods = false)
@EnableAutoConfiguration
@Import({ SomeConfiguration.class, AnotherConfiguration.class })
public class MyApplication {

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

}

import org.springframework.boot.SpringBootConfiguration
import org.springframework.boot.autoconfigure.EnableAutoConfiguration
import org.springframework.boot.docs.using.structuringyourcode.locatingthemainclass.MyApplication
import org.springframework.boot.runApplication
import org.springframework.context.annotation.Import

@SpringBootConfiguration(proxyBeanMethods = false)
@EnableAutoConfiguration
@Import(SomeConfiguration::class, AnotherConfiguration::class)
class MyApplication

fun main(args: Array<String>) {
	runApplication<MyApplication>(*args)
}