后台校验登录账户不能重复

ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java

@@ -12,6 +12,7 @@ import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.multipart.MultipartFile;
 import com.ruoyi.common.annotation.Log;
+import com.ruoyi.common.constant.UserConstants;
 import com.ruoyi.common.core.controller.BaseController;
 import com.ruoyi.common.core.domain.AjaxResult;
 import com.ruoyi.common.core.page.TableDataInfo;
@@ -122,6 +123,10 @@ public class SysUserController extends BaseController
         {
             return error("不允许修改超级管理员用户");
         }
+        if (UserConstants.USER_NAME_NOT_UNIQUE.equals(userService.checkLoginNameUnique(user.getLoginName())))
+        {
+            return error("保存用户'" + user.getLoginName() + "'失败，登录账号已存在");
+        }
         user.setSalt(ShiroUtils.randomSalt());
         user.setPassword(passwordService.encryptPassword(user.getLoginName(), user.getPassword(), user.getSalt()));
         user.setCreateBy(ShiroUtils.getLoginName());