Spring-Boot say hello world

•  在 https://start.spring.io/ 中构建 demo项目
• 用IDE 以maven项目导入 
• 

 demoApplication代码

@Controller
@EnableAutoConfiguration
public class DemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}
	
	@RequestMapping("/")
	@ResponseBody
	String home() {
		return "hello world";
	}
	
}