Azure功能无法正常工作? [英] Azure function not working properly ?

问题描述

我有一个azure函数，它使用像这样的多种格式来获取输入文件-

I have an azure function which takes an input file using multi form like this -

    public static class function
{
    [FunctionName("Function1")]
    public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]HttpRequestMessage req, TraceWriter log,string imagename)
    {


        // parse query parameter
        string name = req.GetQueryNameValuePairs()
            .FirstOrDefault(q => string.Compare(q.Key, "name", true) == 0)
            .Value;

        // Get request body
        dynamic data = await req.Content.ReadAsAsync<object>();

        // Set name to query string or body data
        name = name ?? data?.name;


       log.Info("C# HTTP trigger function processed a request.");


        return name == null
            ? req.CreateResponse(HttpStatusCode.BadRequest, "Please pass a name on the query string or in the request body")
            : req.CreateResponse(HttpStatusCode.OK, "Hello " + name);
    }

您现在可以看到，我对该文件不做任何事情.我正在尝试让它先运行.

As you can see at the moment I am not doing anything with the file. I am trying to get it run first.

我的摇头文件看起来像这样:

My swagger file looks like this :

        {
 "swagger": "2.0",
  "info": {
  "version": "1.0.0",
  "title": "Testfunction"
  },
  "host": "Testfunction.azurewebsites.net",
 "paths": {
   "/api/Function1": {
  "post": {
    "tags": [
      "Function1"
    ],
    "operationId": "UploadImage",
    "consumes": [
      "multipart/form-data"
    ],
    "produces": [
      "application/json",
      "text/json",
      "application/xml",
      "text/xml"
    ],
    "parameters": [
      {
        "name": "file",
        "in": "formData",
        "required": true,
        "type": "file",
        "x-ms-media-kind": "image"
      },
      {
        "name": "fileName",
        "in": "query",
        "required": false,
        "type": "string"
      }
    ],
    "responses": {
      "200": {
        "description": "Saved successfully",
        "schema": {
          "$ref": "#/definitions/UploadedFileInfo"
        }
      },
      "400": {
        "description": "Could not find file to upload"
      }
    },
    "summary": "Image Upload",
    "description": "Image Upload"
  }
}},
"definitions": {
"UploadedFileInfo": {
  "type": "object",
  "properties": {
    "FileName": {
      "type": "string"
    },
    "FileExtension": {
      "type": "string"
    },
    "FileURL": {
      "type": "string"
    },
    "ContentType": {
      "type": "string"
    }
  }
}

},
  "securityDefinitions": {
"AAD": {
  "type": "oauth2",
  "flow": "accessCode",
  "authorizationUrl": "https://login.windows.net/common/oauth2/authorize",
  "tokenUrl": "https://login.windows.net/common/oauth2/token",
  "scopes": {}
   }
 },
 "security": [
  {
   "AAD": []
  }
],
"tags": []

}

我已经正确配置了Auth0，但是当我尝试在Powerapps中运行它时，它以未知错误返回作为响应.

I have configured the Auth0 properly but when I try to run this in Powerapps, it returns with unknown error as the response.

我正在尝试将图像发送到azure函数，并希望将其转换为PDF.我怎样才能做到这一点?

I am trying to send an image to the azure function with which I want to convert it to PDF. How can I do this?

推荐答案

根据您的代码，您似乎正在使用

According to your code, it seems that you are using the precompiled functions. I found your HttpTrigger function code does not match the swagger file you provided. For a simple way, I just use the Azure Portal and created my HttpTrigger function as follow:

run.csx:

using System.Net;

public static async Task<HttpResponseMessage> Run(HttpRequestMessage request, TraceWriter log)
{
    //Check if the request contains multipart/form-data.
    if (!request.Content.IsMimeMultipartContent())
    {
        return request.CreateResponse(HttpStatusCode.UnsupportedMediaType);
    }
    
    //The root path where the content of MIME multipart body parts are written to
    string root = Path.Combine(System.Environment.GetEnvironmentVariable("HOME"), @"site\wwwroot\HttpTriggerCSharp1\");
    var provider = new MultipartFormDataStreamProvider(root);

    // Read the form data
    await request.Content.ReadAsMultipartAsync(provider);

    List<UploadedFileInfo> files = new List<UploadedFileInfo>();
    // This illustrates how to get the file names.
    foreach (MultipartFileData file in provider.FileData)
    {   
        var fileInfo = new FileInfo(file.Headers.ContentDisposition.FileName.Trim('"'));
        files.Add(new UploadedFileInfo()
        {
            FileName = fileInfo.Name,
            ContentType = file.Headers.ContentType.MediaType,
            FileExtension = fileInfo.Extension,
            FileURL = file.LocalFileName
        });
    }
    return request.CreateResponse(HttpStatusCode.OK, files, "application/json");
}

public class UploadedFileInfo
{
    public string FileName { get; set; }
    public string FileExtension { get; set; }
    public string FileURL { get; set; }
    public string ContentType { get; set; }
}

注意:MIME多部分正文部分存储在您的temp文件夹下.您可以通过file.LocalFileName检索临时文件的完整路径，然后使用相关的库来处理转换，然后保存PDF文件并删除临时文件，然后将转换后的文件返回到客户.

Note: The MIME multipart body parts are stored under your temp folder. You could retrieve the temp file full path via file.LocalFileName, then use the related library to process the conversion, then save the PDF file(s) and remove the temp file(s), then return the converted file(s) to the client.

测试:

此外，我建议您将文件存储在 Azure Blob存储.您可以参考此官方 toturial 入门.

Additionally, I would recommend you store your files under Azure Blob Storage. And you could refer to this official toturial for getting started with it.

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