1.修改部分逻辑

src/main/java/vvpkassistant/controller/UserController.java

@@ -461,4 +461,9 @@ public class UserController {
     public ResponseData<Object>sendUpdateMailConfirmMail(@RequestBody MailModel mailModel){
         return ResponseData.success(mailService.sendUpdateConfirmMail(mailModel));
     }
+
+    @PostMapping("/checkUserName")
+    public ResponseData<Boolean>checkUserName(@RequestBody UserModelDTO userModelDTO){
+        return ResponseData.success(userService.checkUserName(userModelDTO));
+    }
 }