WARN PageNotFound:1120 - No mapping found for HTTP request with URI [/favicon.ico] in DispatcherServ

Error:

WARN PageNotFound:1120 - No mapping found for HTTP request with URI [/favicon.ico] in DispatcherServlet with name 'taotao-sso'

Reason: To return the data is not a specific page, you need to add @ResponseBody to the method

Solution: Add the annotation @ResponseBody to the method

The @ResponseBody annotation means that data is returned instead of a specific page