Question

我已经使用ItextSharp从aspx页面生成pdf文件。

但它在obj.Parse（se）中给出了一个错误，其中se是字符串阅读器，它采用以下路径： -

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

我遇到了这个问题。

请帮助并给出建议。

谢谢

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text.RegularExpressions;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html;
using iTextSharp.text.xml;
using System.Xml;
using iTextSharp.text.html.simpleparser;
public partial class Pdf : System.Web.UI.Page
{
protected override void Render(HtmlTextWriter writer)
{
    MemoryStream mem = new MemoryStream();
    StreamWriter twr = new StreamWriter(mem);
    HtmlTextWriter myWriter = new HtmlTextWriter(twr);
    base.Render(myWriter);
    myWriter.Flush();
    myWriter.Dispose();
    StreamReader strmRdr = new StreamReader(mem);
    strmRdr.BaseStream.Position = 0;
    string pageContent = strmRdr.ReadToEnd();
    strmRdr.Dispose();
    mem.Dispose();
    writer.Write(pageContent);
    CreatePDFDocument(pageContent);


 }
 public  void CreatePDFDocument(string strHtml)
 {

    string strFileName = HttpContext.Current.Server.MapPath("test.pdf");
    // step 1: creation of a document-object
    Document document = new Document();
    // step 2:
    // we create a writer that listens to the document
    PdfWriter.GetInstance(document, new FileStream(strFileName, FileMode.Create));
    StringReader se = new StringReader(strHtml);
    HTMLWorker obj = new HTMLWorker(document);
    document.Open();
    obj.Parse(se);
    document.Close();
    ShowPdf(strFileName);



 }
 public void ShowPdf(string strFileName)
 {
    Response.ClearContent();
    Response.ClearHeaders();
    Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);
    Response.ContentType = "application/pdf";
    Response.WriteFile(strFileName);
    Response.Flush();
    Response.Clear();
}
}

Answer 1

这是一个适合我的例子。有一些代码，但它显示了你可以利用像css这样的东西的方法。希望它有所帮助。

private void ExportToPDF()
{
    string s = "<table><td><tr>First<b>row</b></tr></td></table>";
    Document document = new Document(PageSize.LETTER, 30, 30, 60, 35);
    MemoryStream msReport = new MemoryStream();
    string strHTMLpath = Server.MapPath("../myHTML.html");
    string strPDFpath = Server.MapPath("../myPDF.pdf");
    try
    {
        StringWriter sw = new StringWriter();
        HtmlTextWriter htw = new HtmlTextWriter(sw);
        StreamWriter strWriter = new StreamWriter(strHTMLpath, false, Encoding.UTF8);
        strWriter.Write(s.ToString());
        strWriter.Close();
        strWriter.Dispose();
        iTextSharp.text.html.simpleparser.StyleSheet styles = new iTextSharp.text.html.simpleparser.StyleSheet();
        styles.LoadTagStyle("ol", "leading", "16,0");
        PdfWriter.GetInstance(document, new FileStream(strPDFpath, FileMode.Create));
        document.Add(new Header(iTextSharp.text.html.Markup.HTML_ATTR_STYLESHEET, "Style.css"));
        document.Open();
        ArrayList objects;
        styles.LoadTagStyle("li", "face", "garamond");
        styles.LoadTagStyle("span", "size", "8px");
        styles.LoadTagStyle("body", "font-family", "times new roman");
        styles.LoadTagStyle("body", "font-size", "10px");
        document.NewPage();
        objects = iTextSharp.text.html.simpleparser.
        HTMLWorker.ParseToList(new StreamReader(strHTMLpath, Encoding.Default), styles);
        for (int k = 0; k < objects.Count; k++)
        {
            document.Add((IElement)objects[k]);
        }
    }
    catch (Exception ex)
    {
        throw ex;
    }
    finally
    {
        document.Close();
        Response.Write(strPDFpath);
        Response.ClearContent();
        Response.ClearHeaders();
        Response.AddHeader("Content-Disposition", "attachment; filename=myFileName.pdf");
        Response.ContentType = "application/octet-stream";
        Response.WriteFile(strPDFpath);
        Response.Flush();
        Response.Close();
        File.Delete(strPDFpath);
    }
}

将aspx转换为pdf

1 个答案: