Azure 函数 - 如何读取表单数据

Question

如何在 Azure 函数 中读取表单数据？我尝试以多种方式进行，但总是出现错误，例如：

using System.Net;

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
{
    dynamic data = await req.Content.ReadAsFormDataAsync();

    return req.CreateResponse(HttpStatusCode.OK, $" {data}");
}

错误：Exception while executing function: Functions.FormTrigger. System.Net.Http.Formatting: No MediaTypeFormatter is available to read an object of type 'FormDataCollection' from content with media type 'application/json'.

我检查了请求内容，我收到的请求是 multipart/form-data:

" ------WebKitFormBoundary47wKq7pk9Fcc4H9J\r\nContent-Disposition: form-data; name=\"name\"\r\n\r\nsdgs\r\n
------WebKitFormBoundary47wKq7pk9Fcc4H9J\r\nContent-Disposition: form-data; name=\" _replyto\"\r\n\r\nsdg@sdg.com\r\n
------WebKitFormBoundary47wKq7pk9Fcc4H9J\r\nContent-Disposition: form-data; name=\"message\"\r\n\r\nsdgsd\r\n
------WebKitFormBoundary47wKq7pk9Fcc4H9J--\r\n"

感谢您的任何提示。

Answer 1

由于请求包含 "application/x-www-form-urlencoded" 类型的内容，您需要将输入转换为 NameValueCollection 才能读取输入：

NameValueCollection col = req.Content.ReadAsFormDataAsync().Result; 
return req.CreateResponse(HttpStatusCode.OK, $" {col[0]}");

您也可以传递 Key 字符串而不是 Index，这将使代码更具可读性和不言自明

Answer 2

为了读取表单数据，有方法ReadAsMultipartAsync:

data = await req.Content.ReadAsMultipartAsync().ConfigureAwait(false);

Azure 函数 - 如何读取表单数据

Azure functions - How to read form data

c#

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azure-functions