更新：校验appuser存在时，执行更新。

ruoyi-framework/src/main/java/com/ruoyi/framework/web/service/SsoService.java

@@ -439,7 +439,12 @@ public class SsoService {
             appUser.setPhone(phone);
         }
 
+        AppUser checkUser = appUserService.selectAppUserByUserId(appUser.getUserId());
+        if (checkUser != null) {
+            appUserService.updateAppUser(appUser);
+        } else {
             appUserService.insertAppUser(appUser);
+        }
 
         return appUser;
     }