diff --git a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/base/BaseController.java b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/base/BaseController.java
index b169946c..79c54cd9 100644
--- a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/base/BaseController.java
+++ b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/base/BaseController.java
@@ -16,6 +16,8 @@
 
 package top.charles7c.cnadmin.common.base;
 
+import static top.charles7c.cnadmin.common.annotation.CrudRequestMapping.Api;
+
 import java.util.List;
 
 import javax.servlet.http.HttpServletResponse;
@@ -76,7 +78,7 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @ResponseBody
     @GetMapping
     public R<PageDataVO<V>> page(Q query, @Validated PageQuery pageQuery) {
-        this.checkPermission("list");
+        this.checkPermission(Api.LIST);
         PageDataVO<V> pageDataVO = baseService.page(query, pageQuery);
         return R.ok(pageDataVO);
     }
@@ -94,7 +96,7 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @ResponseBody
     @GetMapping("/tree")
     public R<List<Tree<Long>>> tree(Q query, SortQuery sortQuery) {
-        this.checkPermission("list");
+        this.checkPermission(Api.LIST);
         List<Tree<Long>> list = baseService.tree(query, sortQuery, false);
         return R.ok(list);
     }
@@ -112,7 +114,7 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @ResponseBody
     @GetMapping("/list")
     public R<List<V>> list(Q query, SortQuery sortQuery) {
-        this.checkPermission("list");
+        this.checkPermission(Api.LIST);
         List<V> list = baseService.list(query, sortQuery);
         return R.ok(list);
     }
@@ -129,7 +131,7 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @ResponseBody
     @GetMapping("/{id}")
     public R<D> get(@PathVariable Long id) {
-        this.checkPermission("list");
+        this.checkPermission(Api.LIST);
         D detail = baseService.get(id);
         return R.ok(detail);
     }
@@ -145,7 +147,7 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @ResponseBody
     @PostMapping
     public R<Long> add(@Validated(ValidateGroup.Crud.Add.class) @RequestBody C request) {
-        this.checkPermission("add");
+        this.checkPermission(Api.ADD);
         Long id = baseService.add(request);
         return R.ok("新增成功", id);
     }
@@ -163,7 +165,7 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @ResponseBody
     @PutMapping("/{id}")
     public R update(@Validated(ValidateGroup.Crud.Update.class) @RequestBody C request, @PathVariable Long id) {
-        this.checkPermission("update");
+        this.checkPermission(Api.UPDATE);
         baseService.update(request, id);
         return R.ok("修改成功");
     }
@@ -180,7 +182,7 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @ResponseBody
     @DeleteMapping("/{ids}")
     public R delete(@PathVariable List<Long> ids) {
-        this.checkPermission("delete");
+        this.checkPermission(Api.DELETE);
         baseService.delete(ids);
         return R.ok("删除成功");
     }
@@ -198,20 +200,20 @@ public abstract class BaseController<S extends BaseService<V, D, Q, C>, V, D, Q,
     @Operation(summary = "导出数据")
     @GetMapping("/export")
     public void export(Q query, SortQuery sortQuery, HttpServletResponse response) {
-        this.checkPermission("export");
+        this.checkPermission(Api.EXPORT);
         baseService.export(query, sortQuery, response);
     }
 
     /**
-     * 权限认证
+     * 根据 API 类型进行权限验证
      *
-     * @param subPermission
-     *            部分权限码
+     * @param api
+     *            API 类型
      */
-    private void checkPermission(String subPermission) {
+    private void checkPermission(Api api) {
         CrudRequestMapping crudRequestMapping = this.getClass().getDeclaredAnnotation(CrudRequestMapping.class);
         String path = crudRequestMapping.value();
         String permissionPrefix = String.join(StringConsts.COLON, StrUtil.splitTrim(path, StringConsts.SLASH));
-        StpUtil.checkPermission(String.format("%s:%s", permissionPrefix, subPermission));
+        StpUtil.checkPermission(String.format("%s:%s", permissionPrefix, api.name().toLowerCase()));
     }
 }
diff --git a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/PageDataVO.java b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/PageDataVO.java
index 68898c2d..5c26bbdf 100644
--- a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/PageDataVO.java
+++ b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/model/vo/PageDataVO.java
@@ -55,7 +55,7 @@ public class PageDataVO<V> implements Serializable {
      * 总记录数
      */
     @Schema(description = "总记录数")
-    private Long total;
+    private int total;
 
     /**
      * 基于 MyBatis Plus 分页数据构建分页信息，并将源数据转换为指定类型数据
@@ -76,7 +76,7 @@ public class PageDataVO<V> implements Serializable {
         }
         PageDataVO<V> pageDataVO = new PageDataVO<>();
         pageDataVO.setList(BeanUtil.copyToList(page.getRecords(), targetClass));
-        pageDataVO.setTotal(page.getTotal());
+        pageDataVO.setTotal((int) page.getTotal());
         return pageDataVO;
     }
 
@@ -95,7 +95,7 @@ public class PageDataVO<V> implements Serializable {
         }
         PageDataVO<V> pageDataVO = new PageDataVO<>();
         pageDataVO.setList(page.getRecords());
-        pageDataVO.setTotal(page.getTotal());
+        pageDataVO.setTotal((int) page.getTotal());
         return pageDataVO;
     }
 
@@ -118,7 +118,7 @@ public class PageDataVO<V> implements Serializable {
             return pageDataVO;
         }
 
-        pageDataVO.setTotal((long)list.size());
+        pageDataVO.setTotal(list.size());
         // 对列表数据进行分页
         int fromIndex = (page - 1) * size;
         int toIndex = page * size + size;
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java
index 76e84851..978b4ed0 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/mapper/UserMapper.java
@@ -54,4 +54,14 @@ public interface UserMapper extends BaseMapper<UserDO> {
      */
     @Select("SELECT * FROM `sys_user` WHERE `username` = #{username}")
     UserDO selectByUsername(@Param("username") String username);
+
+    /**
+     * 根据 ID 查询昵称
+     *
+     * @param id
+     *            ID
+     * @return 昵称
+     */
+    @Select("SELECT `nickname` FROM `sys_user` WHERE `id` = #{id}")
+    String selectNicknameById(@Param("id") Long id);
 }
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
index eaf95993..1c73d9af 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/UserServiceImpl.java
@@ -248,7 +248,7 @@ public class UserServiceImpl extends BaseServiceImpl<UserMapper, UserDO, UserVO,
 
     @Override
     public String getNicknameById(Long id) {
-        return super.getById(id).getNickname();
+        return baseMapper.selectNicknameById(id);
     }
 
     /**