修复JWT 鉴权时 无自定义标签 时报空指针异常的问题

chenhaozhe

2026-04-02 a7b6a32774c3d39b3c2dc9728b6ca0300842dbf1

 WebAPI/Service/JwtAuthorizeAttribute.cs

@@ -1,6 +1,8 @@
using System;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Reflection;
using System.Security.Claims;
using System.Threading;
using System.Threading.Tasks;
@@ -31,7 +33,7 @@
    {
        try
        {
            // 检查匿名访问
            // 检查匿名访问(认证)
            if (IsAnonymousAllowed(actionContext)) return;

            // 获取Token
@@ -51,12 +53,63 @@
                return;
            }

            // 验证是否拥有访问模块的权限
            // 有两种判断方式 一种是通过角色去判断，一种是通过用户去判断 目前暂时不做区分，后续可增加系统参数来进行区分
            

            // 设置用户
            actionContext.RequestContext.Principal = principal;

            // 验证是否拥有访问模块的权限
            // 有两种判断方式 一种是通过角色去判断，一种是通过用户去判断 目前暂时不做区分，后续可增加系统参数来进行区分
            // 安全控制器描标签
            var controllerAttr = actionContext.ControllerContext?.ControllerDescriptor?.GetCustomAttributes<PermissionAttribute>().FirstOrDefault();

            // 安全获取Action标签
            var actionAttr = actionContext.ActionDescriptor?.GetCustomAttributes<PermissionAttribute>().FirstOrDefault();

            string PermissionStr = string.Empty;
            // 判断控制器级别上是否启用了鉴权标签
            if(controllerAttr != null && !string.IsNullOrWhiteSpace(controllerAttr?.HModName))
            {
                PermissionStr += controllerAttr.HModName;

                // 查看是否需要更细粒度的控制
                if(actionAttr != null && !string.IsNullOrWhiteSpace(actionAttr?.Operate))
                {
                    // 该动作对应的模块名和控制器名是否不一致
                    if (string.IsNullOrWhiteSpace(actionAttr.HModName))
                    {
                        PermissionStr = actionAttr.HModName + actionAttr.Operate;
                    }
                    else
                    {
                        PermissionStr += actionAttr.Operate;
                    }

                }

                if(!string.IsNullOrWhiteSpace(PermissionStr))
                {
                    if (!DBUtility.ClsPub.Security_Log(PermissionStr, 1, false, JWTHelper.getUserName(token)))
                    {
                        HandleForbidden(actionContext);
                        return;
                    }
                }
                
            }else if (!string.IsNullOrWhiteSpace(actionAttr?.HModName) && !string.IsNullOrWhiteSpace(actionAttr?.Operate))
            {
                // 单独在动作上启用鉴权功能
                PermissionStr = actionAttr.HModName + actionAttr.Operate;

                if (!string.IsNullOrWhiteSpace(PermissionStr))
                {
                    if (!DBUtility.ClsPub.Security_Log(PermissionStr, 1, false, JWTHelper.getUserName(token)))
                    {
                        HandleForbidden(actionContext);
                        return;
                    }
                }
            }

           
        }
        catch (Exception e)
        {
@@ -111,7 +164,7 @@
        var response = new HttpResponseMessage(HttpStatusCode.Forbidden);
        objjson.code = "0";
        objjson.count = 0;
        objjson.Message = "当前角色无权限";
        objjson.Message = "您没有该模块权限,请与管理员联系！";
        response.Content = new StringContent(Newtonsoft.Json.JsonConvert.SerializeObject(objjson),
            System.Text.Encoding.UTF8, "application/json");
        context.Response = response;