Error in converting HTML with images to PDF using itextsharp

问题

In my application first am allowing the user to create html document using CKEDITOR where user can can create html document and can insert image, form fields etc. the generated HTML document is than converted into PDF. If HTML document contains plain text than PDF file gets created successfully but if user inserts image in it than gives error. code for creating PDF document.

public ActionResult CreateFile(FormCollection data)
    {
        var filename = data["filename"];
        var htmlContent = data["content"];
        string sFilePath = Server.MapPath(_createdPDF + filename + ".html");
        htmlContent = htmlContent.Trim();
        if (!System.IO.File.Exists(sFilePath))
        {
            using (FileStream fs = new FileStream(sFilePath, FileMode.Create))
            {
                using (StreamWriter w = new StreamWriter(fs, Encoding.UTF8))
                {
                    w.Write(htmlContent);
                }
            }
            createPDF(sFilePath);
        }

        return View();
    }

    private MemoryStream createPDF(string sFilePath)
    {
        string filename = Path.GetFileNameWithoutExtension(sFilePath);
        string name = Server.MapPath(_createdPDF + filename + ".pdf");
        MemoryStream ms = new MemoryStream();
        TextReader tr = new StringReader(sFilePath);
        Document document = new Document(PageSize.A4, 30, 30, 30, 30);
        string urldir = Request.Url.GetLeftPart(UriPartial.Path);
        urldir = urldir.Substring(0, urldir.LastIndexOf("/") + 1);
        Response.Write(urldir);
        PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(name, FileMode.Create));
        document.Open();
        string htmlText = "";
        StreamReader sr;
        sr = System.IO.File.OpenText(sFilePath);
        htmlText = sr.ReadToEnd();
        sr.Close();
        WebClient wc = new WebClient();
        Response.Write(htmlText);
        var props = new Dictionary<string, Object>();
        props["img_baseurl"] = @"C:\Documents and Settings\shubham\My Documents\visdatemplatemanger\visdatemplatemanger\";
        List<IElement> htmlarraylist = HTMLWorker.ParseToList(new StringReader(htmlText), null,props);
        for (int k = 0; k < htmlarraylist.Count; k++)
        {
            document.Add((IElement)htmlarraylist[k]);
        }
        document.Close();
        System.IO.File.Delete(sFilePath);
        UploadURL(name);
        return ms;
    }

The error that i get if image is included in HTML document is:

Could not find a part of the path 'C:\Program Files\Common Files\Microsoft Shared\PDFimages\rectangle-shape.png'.

回答1:

iTextSharp will try to resolve relative images for HTTP-based documents but ones served from the filesystem you need to either provide absolute paths or provide a base for it to search from.

//Image search base, path will be concatenated directly so make sure it contains a trailing slash
var props = new Dictionary<string, Object>();
props["img_baseurl"] = @"c:\images\";

//Include the props from above
htmlarraylist = HTMLWorker.ParseToList(sr, null, props);

来源：https://stackoverflow.com/questions/16056055/error-in-converting-html-with-images-to-pdf-using-itextsharp

标签

asp.net-mvc

itextsharp