Ambiguous mapping. Cannot map ‘Controller‘ methodhere is already ‘Controller

Ambiguous mapping. Cannot map ‘Controller‘ methodhere is already ‘Controller

抱错：
Ambiguous mapping. Cannot map ‘Controller’ methodhere is already 'Controller

原因：
未对当前@RequestMapping指定路由

解决方法：
添加具体的路由路径，如下所示（不能重复）：

@RequestMapping(value = "xxx")