Html网页生成Pdf

在http://code.google.com/p/wkhtmltopdf/downloads/list下载安装程序。

1.添加引用

using System.Diagnostics;

2.方法

    /// <summary>
    /// 把对应的网页转化成Pdf文件
    /// </summary>
    /// <param name="Url">网页网址</param>
    /// <param name="Path"></param>
    /// <returns>成功返回true失败返回false</returns>
    public static bool HtmlTOPdf(string Url, string Path)
    {
        if (!string.IsNullOrEmpty(Url)&&!string.IsNullOrEmpty(Path))
        {
            try
            {
                Process p = new Process();
                p.StartInfo.FileName = "cmd.exe";
                p.StartInfo.WorkingDirectory = "C:\\WINDOWS\\system32";
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = true;
                p.StartInfo.CreateNoWindow = true;
                p.Start();
                string cmd = "C:/Users/PC/Desktop/wkhtmltopdf/wkhtmltopdf.exe" + " " + Url + " " + Path + " ";
                p.StandardInput.WriteLine(cmd);
                p.WaitForExit(6000);
                p.Close();
                return true;
            }
            catch (Exception)
            {
                return false;
            }
        }
        else
        {
            return false;
        }
    }

3.调用

 Html2Pdf.HtmlToPdf("http://www.cnblogs.com/", "d:/cnblogs.pdf");

出现的问题：非utf-8编码的网页转换会出现乱码。有人做过测试：http://aiilive.blog.51cto.com/1925756/1340243

在网上找了一些其他的转换方法：

http://www.html-to-pdf.net/ 也不支持非utf-8的网页转换，测试网站 http://www.51cto.com/ 转换乱码

http://www.winnovative-software.com/ 测试成功

下面是代码：

需要添加wnvhtmltopdf.dll

using Winnovative;

        //create a PDF document
        Document document = new Document();

        //optional settings for the PDF document like margins, compression level,
        //security options, viewer preferences, document information, etc
        document.CompressionLevel = PdfCompressionLevel.Normal;
        document.Margins = new Margins(10, 10, 0, 0);
        //document.Security.CanPrint = true;
        //document.Security.UserPassword = "";
        document.ViewerPreferences.HideToolbar = false;

        // set if the images are compressed in PDF with JPEG to reduce the PDF document size
        document.JpegCompressionEnabled = true;

        //Add a first page to the document. The next pages will inherit the settings from this page 
        PdfPage page = document.Pages.AddNewPage(PdfPageSize.A4, new Margins(10, 10, 0, 0), PdfPageOrientation.Portrait);

        // the code below can be used to create a page with default settings A4, document margins inherited, portrait orientation
        //PdfPage page = document.Pages.AddNewPage();

        // add a font to the document that can be used for the texts elements 
        PdfFont font = document.Fonts.Add(new System.Drawing.Font(new System.Drawing.FontFamily("Times New Roman"), 10,
                    System.Drawing.GraphicsUnit.Point));

        // the result of adding an element to a PDF page
        AddElementResult addResult;

        // Get the specified location and size of the rendered content
        // A negative value for width and height means to auto determine
        // The auto determined width is the available width in the PDF page
        // and the auto determined height is the height necessary to render all the content
        float xLocation = 0;
        float yLocation = 0;
        float width = 0;
        float height = 0;

        // convert HTML to PDF
        HtmlToPdfElement htmlToPdfElement;

        // convert a URL to PDF
        string urlToConvert = "http://www.51cto.com/";

        htmlToPdfElement = new HtmlToPdfElement(xLocation, yLocation, width, height, urlToConvert);

        //optional settings for the HTML to PDF converter
        htmlToPdfElement.FitWidth = true;//合适的宽度
        htmlToPdfElement.EmbedFonts = false;//嵌入字体呈现PDF文档中真正的类型
        htmlToPdfElement.LiveUrlsEnabled = false;//网页链接是否可用
        htmlToPdfElement.JavaScriptEnabled = true;//在转换期间是否启用JavaScript和其他客户端脚本
        htmlToPdfElement.PdfBookmarkOptions.HtmlElementSelectors = null;//Bookmark H1 and H2 HTML tags

        // add theHTML to PDF converter element to page
        addResult = page.AddElement(htmlToPdfElement);

        try
        {
            // get the PDF document bytes
            byte[] pdfBytes = document.Save();

            // send the generated PDF document to client browser

            // get the object representing the HTTP response to browser
            HttpResponse httpResponse = HttpContext.Current.Response;

            // add the Content-Type and Content-Disposition HTTP headers
            httpResponse.AddHeader("Content-Type", "application/pdf");
            httpResponse.AddHeader("Content-Disposition", String.Format("attachment; filename=51cto.pdf; size={0}", pdfBytes.Length.ToString()));

            // write the PDF document bytes as attachment to HTTP response 
            httpResponse.BinaryWrite(pdfBytes);

            // Note: it is important to end the response, otherwise the ASP.NET
            // web page will render its content to PDF document stream
            httpResponse.End();
        }
        finally
        {
            // close the PDF document to release the resources
            document.Close();
        }