springboot请求异常:There was an unexpected error (type=Not Found, status=404).

今天新建springboot工程测试的时候,请求一直访问不到,抛出异常:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Sat Jul 04 21:06:06 CST 2020
There was an unexpected error (type=Not Found, status=404)…;
如下图:
springboot请求异常:There was an unexpected error (type=Not Found, status=404)._第1张图片
解决方式:
将@Service换成@Controller即可;

原代码(有问题的代码):

@Service
public class Busi002ServiceImpl implements IBusi002Service {

	@ResponseBody
	@RequestMapping("/hello")
	public String test() {
		return "Hello World!";
	}
}

修改过后的代码:

@Controller
public class Busi002ServiceImpl implements IBusi002Service {

	@ResponseBody
	@RequestMapping("/hello")
	public String test() {
		return "Hello World!";
	}
}

修改后的效果:
在这里插入图片描述

至于@Controller和@Service的具体区别还没有搞明白,不知道为什么有的项目可以使用@Service,应该是做过什么处理吧。

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