在运行函数的已发布版本时出现以下错误,应该注意的是,当我在本地运行此函数时,它可以正常工作。
访问路径'D:\ Program Files (x86)\ SiteExtensions \ Functions \ 1.0.12205 \ wkhtmltopdf'被拒绝。在 System.IO .__ Error.WinIOError(Int32 errorCode,字符串也许全路径)位于 System.IO.Directory.InternalCreateDirectory(String fullPath,String 路径,对象dirSecurityObj,布尔值checkHost)位于 System.IO.Directory.InternalCreateDirectoryHelper(字符串路径,布尔值 checkHost)位于System.IO.Directory.CreateDirectory(字符串路径),位于 NReco.PdfGenerator.HtmlToPdfConverter.EnsureWkHtmlLibs()在 NReco.PdfGenerator.HtmlToPdfConverter.GeneratePdfInternal(WkHtmlInput [] htmlFiles,字符串inputContent,字符串coverHtml,字符串 outputPdfFilePath,Stream outputStream)位于 NReco.PdfGenerator.HtmlToPdfConverter.GeneratePdf(String htmlContent, 字符串coverHtml,流输出)在 NReco.PdfGenerator.HtmlToPdfConverter.GeneratePdf(String htmlContent, 字符串CoverHtml)在 NReco.PdfGenerator.HtmlToPdfConverter.GeneratePdf(String htmlContent) 在HTMLtoPDF.Function1.d__0.MoveNext()
我的应用程序基本上将HTML转换为PDF文件,然后上传到azure并返回结果uri。
正如您在下面的代码中看到的那样,我对此路径没有任何引用。
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.Azure.WebJobs.Host;
using Microsoft.WindowsAzure.Storage;
using Microsoft.WindowsAzure.Storage.Blob;
using NReco.PdfGenerator;
using System;
namespace HTMLtoPDF
{
public static class Function1
{
[FunctionName("Function1")]
public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]HttpRequestMessage req, TraceWriter log)
{
log.Info("C# HTTP trigger function processed a request.");
string pdfurl = "";
// parse query parameter
string html = req.GetQueryNameValuePairs()
.FirstOrDefault(q => string.Compare(q.Key, "html", true) == 0)
.Value;
if (html == null)
{
// Get request body
dynamic data = await req.Content.ReadAsAsync<object>();
html = data?.html;
}
try
{
HtmlToPdfConverter converter = new HtmlToPdfConverter();
var genpdf = converter.GeneratePdf(html);
var stream = new MemoryStream(genpdf, writable: false);
pdfurl = await UploadFileAsBlobAsync(stream, Guid.NewGuid()+".pdf");
}
catch (Exception ex)
{
pdfurl = ex.Message+Environment.NewLine+ex.InnerException;
}
return html == null
? req.CreateResponse(HttpStatusCode.BadRequest, "Please pass html on the query string or in the request body")
: req.CreateResponse(HttpStatusCode.OK, pdfurl);
}
public static async Task<string> UploadFileAsBlobAsync(Stream stream, string filehtml)
{
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(HIDDENFORSECURITY);
// Create the blob client.
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
// Retrieve a reference to a container.
CloudBlobContainer container = blobClient.GetContainerReference("applicationimages");
CloudBlockBlob blockBlob = container.GetBlockBlobReference(filehtml);
await blockBlob.UploadFromStreamAsync(stream);
stream.Dispose();
return blockBlob?.Uri.ToString();
}
}
}
答案 0 :(得分:1)
看起来像NReco PdfConverter在幕后使用wkhtmltopdf.exe生成PDF,并且在调用NReco.PdfGenerator.HtmlToPdfConverter.EnsureWkHtmlLibs()
时遇到拒绝访问异常。
有关可能的解决方法,请参见此处: https://github.com/nreco/nreco/issues/4
答案 1 :(得分:0)
问题在下面两行中。它正在尝试在文件系统上创建文件夹。 在Azure中托管程序时,允许文件夹
HtmlToPdfConverter converter = new HtmlToPdfConverter();
var genpdf = converter.GeneratePdf(html);
您可以使用GeneratePdf的流变体吗,它不生成任何间歇性文件夹。