MVCRazorToPDF保存为PDF位置或斑点，然后下载 [英] MVCRazorToPDF save PDF to location or Blob and then download

问题描述

下面是我的code：

 public class ActionDownloadAttribute : ActionFilterAttribute 
 {
       public override void OnResultExecuted(ResultExecutedContext filterContext)
       {
             filterContext.HttpContext.Response.AddHeader("content-disposition", "attachment; filename=" + "Report.pdf");
             base.OnResultExecuted(filterContext);
       }
 }


[ActionDownload]
 public ActionResult GeneratePdf()
 {
       List<Comment> comments = null;
        using (var db = new CandidateEntities())
        {
            comments = db.Comments.ToList();
        }
        return new PdfActionResult("GeneratePdf", comments);
 }

这上面code给出了download.But PDF文件我想将它保存（自动），以特定的路径或BLOB下载前。

This above code gives the PDF file for download.But I want to Save it(Automatically) to specific path or Blob before downloading it.

谁能帮助我一样吗？

推荐答案

当我本来看着我的回答并没有真正带来了很多value.So的我会尽量扩大。

When I looked originally at my answer it did not really brought a lot of value.So I will try to expand.

首先，我有完全一样的控制器你。然后我用restsharp拨打电话到该网址

First I have exactly the same controller as you. Then I use restsharp to make a call to that URL

        var client = new RestClient("http://some.url.com");

        var request = new RestRequest("mvc/GeneratePDF", Method.GET);
        // execute the request
        RestResponse response = (RestResponse)client.Execute(request);

        // Zwracamy byte[] ktory jest naszym plikiem PDF
        return response;

现在，如果你看一下 response.RawBytes 您可以使用下面的方法来将字节数组直接上传到Azure的:)

Now if you look at the response.RawBytes you can use that in methods below to upload the byte array directly to Azure :)

我把我的2种方法之一，无论是上传一个byte []或流

I call one of my 2 methods to either upload a byte[] or from stream

 public static class AzureStorage
{
    /// <summary>
    /// Metoda zajmujaca sie uploadem do Azure
    /// </summary>
    public static string _uploadToAzureBlob(byte[] arrPDF, string azureContainer, string filename)
    {
        // Retrieve connection string
        CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConn"));
        // Create blob client
        CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
        // Retrieve reference to a previously created container.
        CloudBlobContainer container = blobClient.GetContainerReference(azureContainer);
        // Create object blob 
        CloudBlockBlob blob = container.GetBlockBlobReference(filename);
        // Upload
        blob.UploadFromByteArray(arrPDF, 0, arrPDF.Length);

        return blob.Uri.ToString();
    }

    /// <summary>
    /// Metoda zajmujaca sie uploadem do Azure
    /// </summary>
    public static string _uploadToAzureBlob(Stream iostream, string azureContainer, string filename, bool ApplyReadPermissions = true)
    {
        // Retrieve connection string
        CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConn"));
        // Create blob client
        CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
        // Retrieve reference to a previously created container.
        CloudBlobContainer container = blobClient.GetContainerReference(azureContainer);

        // Create container if it does not exist
        container.CreateIfNotExists();

        // Create object blob 
        CloudBlockBlob blob = container.GetBlockBlobReference(filename);

        iostream.Position = 0;//Move the pointer to the start of stream..

        using (var fileStream = iostream)
        {
            blob.UploadFromStream(fileStream);
        }

        // Here we need to share the URL for reading the barcode! Otherwise we dont have access to it
        if (ApplyReadPermissions)
        {
            var builder = new UriBuilder(blob.Uri);
            builder.Query = blob.GetSharedAccessSignature(
                new SharedAccessBlobPolicy
                {
                    Permissions = SharedAccessBlobPermissions.Read,
                    SharedAccessStartTime = new DateTimeOffset(DateTime.UtcNow.AddMinutes(-5)),
                    SharedAccessExpiryTime = new DateTimeOffset(DateTime.UtcNow.AddMinutes(5))
                }).TrimStart('?');

            var x = builder.Uri.ToString();

            return x;
        }

        return null;
    }
}

让我知道，如果这有助于。这对我的作品在我的蔚蓝的环境。我有一个webjob生成这些文件和BLOB自动保存它们。

Let me know if this helps. It works for me in my azure environment. I have a webjob generating those files and saving them automatically on blob.

如果你重写这些方法上传到Azure的是异步然后有像下面的东西将使你做下面的调用：

If you would rewrite those methods to upload to Azure to be Async then having something like below would enable you to do following call :

    public async Task<ActionResult> asyncPDF()
    {
        return await AzureStorage._uploadToAzureBlob( ControllerContext.GeneratePdf(objModel, "VIEW_NAME") ) ;
    }

我将测试这种方法更详细地确认其行为。

I will be testing that method more in detail to confirm its behavior.

意见多的欢迎：D

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