Request.Form抛出异常

本文介绍了Request.Form抛出异常的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我正在制作ASP.NET Core Web应用程序，我正在从javascript文件通过HttpContext上传PDF文件。因此，当我尝试在服务器端加载文件时，使用Request.Form.File，Form抛出System.IO.InvalidDataException类型的异常。表格信息是：超出部分体长限制16384。我尝试编辑web.config文件以增加该限制，但消息始终相同。 我有什么遗漏或者我看错了吗？

I am making ASP.NET Core web application, and I am uploading PDF file through HttpContext from javascript file. So, when I am trying to load file on the server side, using Request.Form.File, Form is throwing exception of type System.IO.InvalidDataException. Form message is saying: "Multipart body length limit 16384 exceeded". I tried to edit web.config file in order to increase that limit, but message is always the same. Is there anything I am missing or I am looking on the wrong side?

谢谢。

推荐答案

定义此属性：

[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)] public class RequestFormSizeLimitAttribute : Attribute, IAuthorizationFilter, IOrderedFilter { private readonly FormOptions _formOptions; public RequestFormSizeLimitAttribute(int valueCountLimit) { _formOptions = new FormOptions() { ValueCountLimit = valueCountLimit }; } public int Order { get; set; } public void OnAuthorization(AuthorizationFilterContext context) { var features = context.HttpContext.Features; var formFeature = features.Get<IFormFeature>(); if (formFeature == null || formFeature.Form == null) { // Request form has not been read yet, so set the limits features.Set<IFormFeature>(new FormFeature(context.HttpContext.Request, _formOptions)); } } }

并将此属性添加到您的动作方法看看会发生什么：

And add this attribute to your action method see what happens:

[RequestFormSizeLimit(valueCountLimit: 2147483648)] [HttpPost] public IActionResult ActionMethod(...) { ... }