update

TEAMModelOS/Controllers/System/BlobController.cs

@@ -165,7 +165,7 @@ namespace TEAMModelOS.Controllers
         /// <param name="request"></param>
         /// <returns></returns>
         [HttpPost("sas-read")]
-        [AuthToken(Roles = "teacher,admin,student")]
+        [AuthToken(Roles = "teacher,admin,student,visitor")]
         public IActionResult BlobSasR(JsonNode json)
         {
             ///返回金钥过期时间