diff --git a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java b/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java
index 14533c84..5b53dd1c 100644
--- a/ruoyi-admin/src/main/java/com/ruoyi/web/controller/system/SysUserController.java
+++ b/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());
diff --git a/ruoyi-admin/src/main/resources/templates/system/menu/edit.html b/ruoyi-admin/src/main/resources/templates/system/menu/edit.html
index d6dc9d72..c7fc244b 100644
--- a/ruoyi-admin/src/main/resources/templates/system/menu/edit.html
+++ b/ruoyi-admin/src/main/resources/templates/system/menu/edit.html
@@ -50,7 +50,7 @@
 				<label class="col-sm-3 control-label">权限标识：</label>
 				<div class="col-sm-8">
 					<input id="perms" name="perms" class="form-control" type="text" th:field="*{perms}">
-					<span class="help-block m-b-none"><i class="fa fa-info-circle"></i> 控制器中定义的权限标识，如：@RequiresPermissions("")</span>
+				    <span class="help-block m-b-none"><i class="fa fa-info-circle"></i> 控制器中定义的权限标识，如：@RequiresPermissions("")</span>
 				</div>
 			</div>
 			<div class="form-group">
diff --git a/ruoyi-admin/src/main/resources/templates/system/user/add.html b/ruoyi-admin/src/main/resources/templates/system/user/add.html
index 163231bb..59033a17 100644
--- a/ruoyi-admin/src/main/resources/templates/system/user/add.html
+++ b/ruoyi-admin/src/main/resources/templates/system/user/add.html
@@ -14,7 +14,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>用户名称：</label>
                         <div class="col-sm-8">
-                            <input name="userName" autocomplete="off" placeholder="请输入用户名称" class="form-control" type="text" maxlength="30" required>
+                            <input name="userName" placeholder="请输入用户名称" class="form-control" type="text" maxlength="30" required>
                         </div>
                     </div>
                 </div>
@@ -35,7 +35,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>手机号码：</label>
                         <div class="col-sm-8">
-                            <input name="phonenumber" autocomplete="off" placeholder="请输入手机号码" class="form-control" type="text" maxlength="11" required>
+                            <input name="phonenumber" placeholder="请输入手机号码" class="form-control" type="text" maxlength="11" required>
                         </div>
                     </div>
                 </div>
@@ -43,7 +43,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>邮箱：</label>
                         <div class="col-sm-8">
-                            <input name="email" autocomplete="off" class="form-control email" type="text" maxlength="50" placeholder="请输入邮箱" required>
+                            <input name="email" class="form-control email" type="text" maxlength="50" placeholder="请输入邮箱" required>
                         </div>
                     </div>
                 </div>
@@ -53,7 +53,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>登录账号：</label>
                         <div class="col-sm-8">
-                            <input name="loginName" placeholder="请输入登录账号" autocomplete="off" class="form-control required" type="text" maxlength="30" required>
+                            <input name="loginName" placeholder="请输入登录账号" class="form-control required" type="text" maxlength="30" required>
                         </div>
                     </div>
                 </div>
@@ -61,7 +61,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>登录密码：</label>
                         <div class="col-sm-8">
-                            <input name="password" placeholder="请输入登录密码" autocomplete="off" class="form-control" type="password" th:value="${@config.getKey('sys.user.initPassword')}" required>
+                            <input name="password" placeholder="请输入登录密码" class="form-control" type="password" th:value="${@config.getKey('sys.user.initPassword')}" required>
                         </div>
                     </div>
                 </div>
@@ -121,7 +121,7 @@
                     <div class="form-group">
                         <label class="col-xs-2 control-label">备注：</label>
                         <div class="col-xs-10">
-                            <textarea name="remark" autocomplete="off" maxlength="500" class="form-control" rows="3"></textarea>
+                            <textarea name="remark" maxlength="500" class="form-control" rows="3"></textarea>
                         </div>
                     </div>
                 </div>
diff --git a/ruoyi-admin/src/main/resources/templates/system/user/edit.html b/ruoyi-admin/src/main/resources/templates/system/user/edit.html
index 8fd1a574..c2857f1c 100644
--- a/ruoyi-admin/src/main/resources/templates/system/user/edit.html
+++ b/ruoyi-admin/src/main/resources/templates/system/user/edit.html
@@ -15,7 +15,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>用户名称：</label>
                         <div class="col-sm-8">
-                            <input name="userName" autocomplete="off" placeholder="请输入用户名称" class="form-control" type="text" maxlength="30" th:field="*{userName}" required>
+                            <input name="userName" placeholder="请输入用户名称" class="form-control" type="text" maxlength="30" th:field="*{userName}" required>
                         </div>
                     </div>
                 </div>
@@ -36,7 +36,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>手机号码：</label>
                         <div class="col-sm-8">
-                            <input name="phonenumber" autocomplete="off" placeholder="请输入手机号码" class="form-control" type="text" maxlength="11" th:field="*{phonenumber}" required>
+                            <input name="phonenumber" placeholder="请输入手机号码" class="form-control" type="text" maxlength="11" th:field="*{phonenumber}" required>
                         </div>
                     </div>
                 </div>
@@ -44,7 +44,7 @@
                     <div class="form-group">
                         <label class="col-sm-4 control-label"><span style="color: red; ">*</span>邮箱：</label>
                         <div class="col-sm-8">
-                            <input name="email" autocomplete="off" class="form-control email" type="text" maxlength="50" placeholder="请输入邮箱" th:field="*{email}" required>
+                            <input name="email" class="form-control email" type="text" maxlength="50" placeholder="请输入邮箱" th:field="*{email}" required>
                         </div>
                     </div>
                 </div>
@@ -112,7 +112,7 @@
                     <div class="form-group">
                         <label class="col-xs-2 control-label">备注：</label>
                         <div class="col-xs-10">
-                            <textarea name="remark" autocomplete="off" maxlength="500" class="form-control" rows="3">[[*{remark}]]</textarea>
+                            <textarea name="remark" maxlength="500" class="form-control" rows="3">[[*{remark}]]</textarea>
                         </div>
                     </div>
                 </div>
diff --git a/ruoyi-admin/src/main/resources/templates/system/user/profile/profile.html b/ruoyi-admin/src/main/resources/templates/system/user/profile/profile.html
index 3a0ea270..2ba2fd1a 100644
--- a/ruoyi-admin/src/main/resources/templates/system/user/profile/profile.html
+++ b/ruoyi-admin/src/main/resources/templates/system/user/profile/profile.html
@@ -64,19 +64,19 @@
                                     <div class="form-group">
                                         <label class="col-sm-2 control-label">用户名称：</label>
                                         <div class="col-sm-10">
-                                            <input type="text" autocomplete="off" class="form-control" name="userName" th:field="*{userName}" placeholder="请输入用户名称">
+                                            <input type="text" class="form-control" name="userName" th:field="*{userName}" placeholder="请输入用户名称">
                                         </div>
                                     </div>
                                     <div class="form-group">
                                         <label class="col-sm-2 control-label">手机号码：</label>
                                         <div class="col-sm-10">
-                                            <input type="text" autocomplete="off" class="form-control" name="phonenumber" maxlength="11" th:field="*{phonenumber}" placeholder="请输入手机号码">
+                                            <input type="text" class="form-control" name="phonenumber" maxlength="11" th:field="*{phonenumber}" placeholder="请输入手机号码">
                                         </div>
                                     </div>
                                     <div class="form-group">
                                         <label class="col-sm-2 control-label">邮箱：</label>
                                         <div class="col-sm-10">
-                                            <input type="text" autocomplete="off" class="form-control" name="email" th:field="*{email}" placeholder="请输入邮箱">
+                                            <input type="text" class="form-control" name="email" th:field="*{email}" placeholder="请输入邮箱">
                                         </div>
                                     </div>
                                     <div class="form-group">
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/AjaxResult.java b/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/AjaxResult.java
index 2c9d7210..5463547a 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/AjaxResult.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/core/domain/AjaxResult.java
@@ -232,9 +232,11 @@ public class AjaxResult extends HashMap<String, Object>
     }
 
     @Override
-    public String toString()
-    {
-        return new ToStringBuilder(this, ToStringStyle.MULTI_LINE_STYLE).append("code", getCode())
-                .append("msg", getMsg()).append("data", getData()).toString();
+    public String toString() {
+        return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)
+            .append("code", getCode())
+            .append("msg", getMsg())
+            .append("data", getData())
+            .toString();
     }
 }
diff --git a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
index 2d76cae2..36299f99 100644
--- a/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
+++ b/ruoyi-system/src/main/java/com/ruoyi/system/service/impl/SysUserServiceImpl.java
@@ -293,7 +293,7 @@ public class SysUserServiceImpl implements ISysUserService
     }
 
     /**
-     * 校验用户名称是否唯一
+     * 校验登录名称是否唯一
      * 
      * @param loginName 用户名
      * @return