fix 获取token修改

Src/Dlhis.ScheduledTask/TaskAssignment/Services/Implements/AssignmentService.cs

@@ -13,6 +13,7 @@ using Microsoft.Extensions.Options;
 using SqlSugar;
 using Kurisu.SqlSugar.Extensions;
 using Kurisu.SqlSugar.Attributes;
+using System.Threading.Tasks;
 
 namespace Dlhis.ScheduledTask.TaskAssignment.Services.Implements;
 
@@ -160,13 +161,12 @@ public class AssignmentService : IAssignmentService
     /// <exception cref="NotImplementedException"></exception>
     public async Task<string> Token(long taskId)
     {
-        var task = await _dbContext.Queryable<DeviceTaskEntity>().Where(x => x.Id == taskId).FirstAsync();
-
+         var task = await _dbContext.Queryable<DeviceTaskEntity>().Where(x => x.Id == taskId).FirstAsync();
         task.ThrowIfNull("该任务不存在");
-        if (task.Status != DeviceTaskStatusEnumType.Success)
-        {
-            return "";
-        }
+
+        var isSuccess = task.Status != DeviceTaskStatusEnumType.Success ? true : false;
+        isSuccess.ThrowIfTrue("设备任务下发状态需为完成");
+
         string newtoken="";
         Scoped.Request.Value.Create((sp) =>
         {