需要使用iTextSharp的从HTML创建PDF帮助 [英] Need help with creating PDF from HTML using itextsharp

问题描述

我想箱子PDF文件了HTML页面。我使用的CMS是EPiServer。

I'm trying to crate a PDF out of a HTML page. The CMS I'm using is EPiServer.

这是我的code到目前为止：

This is my code so far:

    protected void Button1_Click(object sender, EventArgs e)
    {
        naaflib.pdfDocument(CurrentPage);
    }


    public static void pdfDocument(PageData pd)
    {
        //Extract data from Page (pd).
        string intro = pd["MainIntro"].ToString(); // Attribute
        string mainBody = pd["MainBody"].ToString(); // Attribute

        // makae ready HttpContext
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.ContentType = "application/pdf";

        // Create PDF document
        Document pdfDocument = new Document(PageSize.A4, 80, 50, 30, 65);
        //PdfWriter pw = PdfWriter.GetInstance(pdfDocument, HttpContext.Current.Response.OutputStream);
        PdfWriter.GetInstance(pdfDocument, HttpContext.Current.Response.OutputStream);  

        pdfDocument.Open();
        pdfDocument.Add(new Paragraph(pd.PageName));
        pdfDocument.Add(new Paragraph(intro));
        pdfDocument.Add(new Paragraph(mainBody));
        pdfDocument.Close();
        HttpContext.Current.Response.End();
    }

此输出的商品名称，介绍文本和主体的内容。 但它没有收杆的HTML这是在本文的文本，并且没有布局

This outputs the content of the article name, intro-text and main body. But it does not pars HTML which is in the article text and there is no layout.

我试着在看看 http://itextsharp.sourceforge.net/tutorial/ index.html的没有becomming任何明智的。

I've tried having a look at http://itextsharp.sourceforge.net/tutorial/index.html without becomming any wiser.

任何指针朝着正确的方向大大AP preciated：）

Any pointers to the right direction is greatly appreciated :)

推荐答案

更高版本的iTextSharp的的：

使用iTextSharp的，你可以使用 iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList（）方法来创建HTML PDF文件。

Using iTextSharp you can use the iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList() method to create a PDF from HTML.

ParseToList（）需要的TextReader （抽象类），它的HTML源代码，这意味着你可以使用一个 StringReader 或的StreamReader （两者都使用的TextReader作为一种基本类型）。我用了一个 StringReader ，并能够生成简单的标记了PDF文件。我试图使用HTML的网页返回，并得到了错误的所有，但simplist页面。即使是simplist网页我检索（ http://black.ea.com/ ）被渲染的内容页面的头部标签到PDF，所以我觉得 HTMLWorker.ParseToList（）方法是挑剔它解析HTML的格式。

ParseToList() takes a TextReader (an abstract class) for its HTML source, which means you can use a StringReader or StreamReader (both of which use TextReader as a base type). I used a StringReader and was able to generate PDFs from simple mark up. I tried to use the HTML returned from a webpage and got errors on all but the simplist pages. Even the simplist webpage I retrieved (http://black.ea.com/) was rendering the content of the page's 'head' tag onto the PDF, so I think the HTMLWorker.ParseToList() method is picky about the formatting of the HTML it parses.

无论如何，如果你想尝试这里的测试code我用：

Anyway, if you want to try here's the test code I used:

// Download content from a very, very simple "Hello World" web page.
string download = new WebClient().DownloadString("http://black.ea.com/");

Document document = new Document(PageSize.A4, 80, 50, 30, 65);
try {
    using (FileStream fs = new FileStream("TestOutput.pdf", FileMode.Create)) {
        PdfWriter.GetInstance(document, fs);
        using (StringReader stringReader = new StringReader(download)) {
            ArrayList parsedList = HTMLWorker.ParseToList(stringReader, null);
            document.Open();
            foreach (object item in parsedList) {
                document.Add((IElement)item);
            }
            document.Close();
        }
    }

} catch (Exception exc) {
    Console.Error.WriteLine(exc.Message);
}

我找不到任何文件上的HTML构造 HTMLWorker.ParseToList（）支持;如果你请张贴在这里。我敢肯定有很多人会感兴趣。

I couldn't find any documentation on which HTML constructs HTMLWorker.ParseToList() supports; if you do please post it here. I'm sure a lot of people would be interested.

对于旧版本的iTextSharp的的： 您可以使用 iTextSharp.text.html.HtmlParser.Parse 方法基于HTML创建一个PDF文件。

For older versions of iTextSharp: You can use the iTextSharp.text.html.HtmlParser.Parse method to create a PDF based on html.

下面是一个片段展示了这一点：

Here's a snippet demonstrating this:

Document document = new Document(PageSize.A4, 80, 50, 30, 65); 
try  {
   using (FileStream fs = new FileStream("TestOutput.pdf", FileMode.Create)) {
      PdfWriter.GetInstance(document, fs);
      HtmlParser.Parse(document, "YourHtmlDocument.html");
   }
} catch(Exception exc)  { 
   Console.Error.WriteLine(exc.Message); 
} 

在一（主要对我来说）问题是HTML必须严格符合XHTML标准。

The one (major for me) problem is the HTML must be strictly XHTML compliant.

祝你好运！

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