使用Aspose将HTML转换为PDF

Question

我是Aspose的新手，但我已经成功地将几种文件格式转换为PDF格式，但我对HTML到PDF的转换感到震惊。我能够成功地将HTML文件转换为PDF，但CSS部分没有呈现到生成的PDF中。对此有什么想法吗？我将www.google.com保存为我的输入文件。这是我的控制器代码。

using Aspose.Pdf.Generator


Pdf pdf = new Pdf();
pdf.HtmlInfo.CharSet = "UTF-8";
Section section = pdf.Sections.Add();
StreamReader r = File.OpenText(@"Local HTML File Path");
Text text2 = new Aspose.Pdf.Generator.Text(section, r.ReadToEnd());
pdf.HtmlInfo.ExternalResourcesBasePath = "Local HTML File Path";
text2.IsHtmlTagSupported = true;
text2.IsFitToPage = true;
section.Paragraphs.Add(text2);
pdf.Save(@"Generated PDF File Path");

我是不是遗漏了什么？任何形式的帮助都是非常感谢的。

谢谢

Answer 1

我的名字是Tilal Ahmad，我是Aspose的开发者布道者。

请使用新的DOM方法(Aspose.Pdf.Document)进行HTML到PDF的转换。在这种呈现外部资源(CSS/图像/字体)的方法中，需要将资源路径传递给HtmlLoadOptions()方法。有关此目的，请查看以下文档链接。

将HTML转换为DOM(新DOM)

HtmlLoadOptions options = new HtmlLoadOptions(resourcesPath);
Document pdfDocument = new Document(inputPath, options);
pdfDocument.Save("outputPath");

将网页转换为(新DOM)

// Create a request for the URL.
WebRequest request = WebRequest.Create("https:// En.wikipedia.org/wiki/Main_Page");
// If required by the server, set the credentials.
request.Credentials = CredentialCache.DefaultCredentials;
// Time out in miliseconds before the request times out
// Request.Timeout = 100;

// Get the response.
HttpWebResponse response = (HttpWebResponse)request.GetResponse();

// Get the stream containing content returned by the server.
Stream dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
reader.Close();
dataStream.Close();
response.Close();

MemoryStream stream = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(responseFromServer));
HtmlLoadOptions options = new HtmlLoadOptions("https:// En.wikipedia.org/wiki/");


// Load HTML file
Document pdfDocument = new Document(stream, options);

options.PageInfo.IsLandscape = true;
// Save output as PDF format
pdfDocument.Save(outputPath);

Answer 2

尝试在每个样式标记中使用媒体属性

<style media="print">

然后将html文件提供给您的Aspose.Pdf生成器。

Answer 3

试试这个..。这对我来说很好

var license = new Aspose.Pdf.License();
license.SetLicense("Aspose.Pdf.lic");

var license = new Aspose.Html.License();
license.SetLicense("Aspose.Html.lic");

using (MemoryStream memoryStream = new MemoryStream())
{
      var options = new PdfRenderingOptions();
      using (PdfDevice pdfDevice = new PdfDevice(options, memoryStream))
      {
          using (var renderer = new HtmlRenderer())
          {
              using (HTMLDocument htmlDocument = new HTMLDocument(content, ""))
              {
                   renderer.Render(pdfDevice, htmlDocument);
                   //Save memoryStream into output pdf file
              }
           }
       }
 }

内容是字符串类型，这是我的html内容。