spring-boot-01 Whitelabel Error Page

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初学，新建一个项目
工具：STS
new Spring Starter Project
Group:com.zfh.demo
Restful->web->finish
加入一个包controller
创建一个class，然后注解为一个控制器

@RestController
//@RequestMapping(value = "/index")
public class IndexController {

	@RequestMapping("/hello")
	public String index() {
		return "hello world";
	}
}

结果遇到如下出错提示
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Mon Mar 04 10:42:27 CST 2019
There was an unexpected error (type=Not Found, status=404).
No message available

调整项目目录层级

最终解决问题