解决前端“CORS 头缺少 ‘Access-Control-Allow-Origin‘“问题

问题：
在HbuilderX中使用mui.ajax()函数访问后台数据时，发现出现：

Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource

解决：
在后台Controller类上加入：

@CrossOrigin(origins = "*", maxAge = 3600)

如：

@CrossOrigin(origins = "*", maxAge = 3600)
public class UserController {

标签：Control,Origin,3600,CrossOrigin,maxAge,Access,Allow
来源： https://blog.csdn.net/qq_41915623/article/details/117453619