"Illegal characters in path" during HTML-to-PDF to Conversion

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Last post 12-22-2010, 9:26 AM by john.szucs. 5 replies.


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12-15-2010, 11:52 PM 274131 in reply to 274616

john.szucs
Joined on 12-15-2010
Posts 4

"Illegal characters in path" during HTML-to-PDF to Conversion

I am currently evaluating the Aspose.Total package for integration into a product that my company is developing. I began the evaluation with HTML-to-PDF conversion with Aspose.Pdf, based on the sample code in the knowledge base article entitled "HTML to PDF using InLineHTML."

The Pdf.Save() method throws an ArgumentException with the message "Illegal characters in path." I searched the forums and saw that some other users experienced similar issues. One thread suggested that Version 4.8.0 of Aspose.Pdf.dll fixed issues like this, so I double-checked my version of the library and that is indeed the version that I am running.

See below for my code. When I call my function with http://en.wikipedia.org/wiki/Main_Page as the url parameter it should be functionally identical to the code in your knowledge base article. A variant of this function which attempts to save the PDF document to a MemoryStream (which is my actual intent for integration into our product) fails in the same way. Including or removing the setting of the ImgUrl property also has no effect on the behavior. The c:\temp folder used in my code below does, in fact, exist.

Please respond with a solution as soon as possible. We are very interested in your suite, but will not be able to make a purchase until I can successfully complete my evaluation.

John J. Szucs, Venio, Inc., http://www.myvenio.com

Venio: Achieve the Vision

-----

public static byte[] GetPageContentAsPdf(string url)

{

// Create a Web Request object to connect to remote URL

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

// 10-second timeout period

request.Timeout = 10000; /* milliseconds */

// Retrieve request info headers

HttpWebResponse localWebResponse = (HttpWebResponse)request.GetResponse();

// Use Windows default code page

Encoding encoding = Encoding.GetEncoding(1252);

// Read the contents of response into StreamReader object

StreamReader localResponseStream = new StreamReader(localWebResponse.GetResponseStream(), encoding);

// Instantiate a PDF document object

Pdf pdf = new Pdf();

// Add a new section to the PDF document

Aspose.Pdf.Section section = pdf.Sections.Add();

// Create text paragraphs containing HTML text

Aspose.Pdf.Text text2 = new Aspose.Pdf.Text(section, localResponseStream.ReadToEnd());

// Enable HTML formatting

text2.IsHtmlTagSupported = true;

// Add text to section

section.Paragraphs.Add(text2);

// HACK: Hard-coded path

pdf.HtmlInfo.ImgUrl = @"http://en.wikipedia.org";

// Save PDF document to a temporary file

// HACK: Hard-coded path

pdf.Save(@"c:\temp\test.pdf");

// Close response and associated stream

localWebResponse.Close();

localResponseStream.Close();

// Return resulting PDF document in memory

return null;

}

---
John J. Szucs
Chief Technology Officer,
http://www.veniolabs.com
Venio: Achieve the Vision

Filed under: ArgumentException;Aspose.Pdf;conversion;HTML

12-17-2010, 2:31 PM 274480

john.szucs
Joined on 12-15-2010
Posts 4
Issues: PDFNET-14508 (Fixed)

"Illegal characters in path" during HTML-to-PDF to Conversion

Please respond with a solution as soon as possible. We are very interested in your suite, but will not be able to make a purchase until I can successfully complete my evaluation.

John J. Szucs, Venio, Inc., http://www.myvenio.com

Venio: Achieve the Vision

-----

public static byte[] GetPageContentAsPdf(string url)

{

// Create a Web Request object to connect to remote URL

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

// 10-second timeout period

request.Timeout = 10000; /* milliseconds */

// Retrieve request info headers

HttpWebResponse localWebResponse = (HttpWebResponse)request.GetResponse();

// Use Windows default code page

Encoding encoding = Encoding.GetEncoding(1252);

// Read the contents of response into StreamReader object

StreamReader localResponseStream = new StreamReader(localWebResponse.GetResponseStream(), encoding);

// Instantiate a PDF document object

Pdf pdf = new Pdf();

// Add a new section to the PDF document

Aspose.Pdf.Section section = pdf.Sections.Add();

// Create text paragraphs containing HTML text

Aspose.Pdf.Text text2 = new Aspose.Pdf.Text(section, localResponseStream.ReadToEnd());

// Enable HTML formatting

text2.IsHtmlTagSupported = true;

// Add text to section

section.Paragraphs.Add(text2);

// HACK: Hard-coded path

pdf.HtmlInfo.ImgUrl = @"http://en.wikipedia.org";

// Save PDF document to a temporary file

// HACK: Hard-coded path

pdf.Save(@"c:\temp\test.pdf");

// Close response and associated stream

localWebResponse.Close();

localResponseStream.Close();

// Return resulting PDF document in memory

return null;

}

This message was posted using Email2Forum by haley.stuart.

---
John J. Szucs
Chief Technology Officer,
http://www.veniolabs.com
Venio: Achieve the Vision

12-20-2010, 5:14 AM 274616 in reply to 274480

codewarior
Joined on 05-05-2008
Posts 7,235

Re: "Illegal characters in path" during HTML-to-PDF to Conversion

Hello John,

Thanks for using our products and sorry for replying you late.

The feature of converting web URL into PDF format is not stable. In fact the method shared in live documentation is a workaround. Nevertheless, the original requirement of converting URL into PDF format is already logged in our issue tracking system as PDFNET-14508. Our development team is looking into the details of this requirement and as soon as we have made some definite progress towards its implementation, we would be pleased to update you with the status of correction. We apologize for your inconvenience.

Please be patient and spare us little time.

Nayyer Shahbaz
Support Developer, Aspose Sialkot Team
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12-20-2010, 8:56 AM 274643 in reply to 274616

john.szucs
Joined on 12-15-2010
Posts 4

Re: "Illegal characters in path" during HTML-to-PDF to Conversion

Thanks for your reply. Can any of the other products in the Aspose.Total suite meet this requirement?

-- John

---
John J. Szucs
Chief Technology Officer,
http://www.veniolabs.com
Venio: Achieve the Vision

12-22-2010, 2:40 AM 275032 in reply to 274643

alexey.noskov
Joined on 10-08-2007
Posts 18,402

Re: "Illegal characters in path" during HTML-to-PDF to Conversion

Hi John,

Thanks for your interest in Aspose products. You can use Aspose.Words to convert HTML to PDF. For example you can use code like the following:

string url = "http://localhost/mysite/default.html";

//Prepare the web page we will be asking for

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

request.Method = "GET";

request.ContentType = "application/msword";

request.UserAgent = "Mozilla/4.0+(compatible;+MSIE+5.01;+Windows+NT+5.0";

//Execute the request

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

//We will read data via the response stream

Stream resStream = response.GetResponseStream();

//Write content into the MemoryStream

BinaryReader resReader = new BinaryReader(resStream);

MemoryStream docStream = new MemoryStream(resReader.ReadBytes((int)response.ContentLength));

//Create document

Aspose.Words.Document doc = new Aspose.Words.Document(docStream);

//Save document

doc.Save(@"Test001\out.pdf");

Hope this helps.

Best regards,

Alexey Noskov
Developer/Technical Support
Aspose Auckland Team

12-22-2010, 9:26 AM 275094 in reply to 275032

john.szucs
Joined on 12-15-2010
Posts 4

Re: "Illegal characters in path" during HTML-to-PDF to Conversion

Alexey,

Thanks for the response. I tried this and it does work, but the fidelity of the conversion process is nowhere near as good as I've seen with dedicated HTML-to-PDF converters or with Aspose.Words own conversion of Word documents to PDF (which I am thoroughly impressed by).

At this point, I'm ready to close this issue. I think that for our project, we're going to have to license Aspose.Total for document conversion and separately license a dedicated HTML-to-PDF converter for high-fidelity capture of Web content.

Thanks for your help!

-- John

---
John J. Szucs
Chief Technology Officer,
http://www.veniolabs.com
Venio: Achieve the Vision