Azure函数-如何读取表单数据 [英] Azure functions - How to read form data
问题描述
如何在 Azure函数中读取表单数据?我尝试了几种方法，但是总是出现错误，例如:
How to read form data in Azure functions? I tried to do it in several ways, but always I get an error, eg.:
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'.
Error: 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，并以multipart/form-data的身份收到请求:
I checked request content and I'm getting request as 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"
谢谢您的提示.
推荐答案
由于请求包含"application/x-www-form-urlencoded"类型的内容，因此您需要将输入转换为NameValueCollection才能读取输入:
As the request contains "application/x-www-form-urlencoded" type of contents, you need to convert the input to NameValueCollection in order to read input:
NameValueCollection col = req.Content.ReadAsFormDataAsync().Result;
return req.CreateResponse(HttpStatusCode.OK, $" {col[0]}");
您还可以传递键字符串而不是索引，这将使代码更具可读性和解释性
You can also pass Key string instead of Index which would make the code more readable and self-explanatory
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