guys, please take a look. I"ve never seen this problem before (after all, I haven"t seen much of it). Please.
Chrome opens a web page written by himself and Failed to load http://xxx/login: Response to preflight request doesn"t pass access control check: The "Access-Control-Allow-Origin" header has a value" null" that is not equal to the supplied origin. appears. Origin "null" is therefore not allowed access.
I don"t know why 360th, QQ, Firefox can be opened, while Chrome has a problem, ignoring IE. It"s not a cross-domain problem.
on a simple login effect, Chrome shows that the connection to the server failed, and the console also reported an error, Baidu can not find, technical blog posts can not be found, helpless.