1 入口类RenrenApplication继承SpringBootServletInitializer

@SpringBootApplicationpublic class RenrenApplication extends SpringBootServletInitializer {	public static void main(String[] args) {		SpringApplication.run(RenrenApplication.class, args);	}	@Override	protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {		return application.sources(RenrenApplication.class);	}	}复制代码

注解：

//作用域，在方法上@Target(ElementType.METHOD)//定义注解在JVM运行时保留@Retention(RetentionPolicy.RUNTIME)//代表会被javadoc记录@Documented//定义成Service类@Service复制代码