问题描述
我正在使用 Open XML SDK 2.12.1 version 将 docx word 转换为 html 文件
d1 = {'Alanine,aspartate and glutamate Metabolism': 4,'Ascorbate and aldarate Metabolism': 4,'Benzoate degradation': 6,'Biosynthesis of antibiotics': 16}
d2 = {'Amino sugar and nucleotide sugar Metabolism': 5,'Arginine and proline Metabolism': 4,'Biosynthesis of antibiotics': 11,'Biosynthesis of secondary Metabolites': 21}
print(merge(d1,d2))
并使用 iText (Version 7.1.14) 使用 {'Biosynthesis of antibiotics': [16,11],'Amino sugar and nucleotide sugar Metabolism': [0,5],'Arginine and proline Metabolism': [0,4],'Alanine,aspartate and glutamate Metabolism': [4,0],'Ascorbate and aldarate Metabolism': [4,'Benzoate degradation': [6,'Biosynthesis of secondary Metabolites': [0,21]}
protected void btndisplay_Click(object sender,EventArgs e)
{
byte[] byteArray = (byte[])(Session["ByteArray"]);
if (byteArray != null)
{
try
{
DirectoryInfo convertedDocsDirectory =
new DirectoryInfo(Server.MapPath(DocxConvertedToHtmlDirectory));
if (!convertedDocsDirectory.Exists)
convertedDocsDirectory.Create();
Guid g = Guid.NewGuid();
var htmlFileName = g.ToString() + ".html";
ConvertToHtml(byteArray,convertedDocsDirectory,htmlFileName);
Response.Redirect(DocxConvertedToHtmlDirectory + htmlFileName);
}
catch (Exception ex)
{
lblMessage.Text = "ERROR: " + ex.Message.ToString();
}
}
else
{
lblMessage.Text = "You have not specified a file.";
}
}
public static void ConvertToHtml(byte[] byteArray,DirectoryInfo destDirectory,string htmlFileName)
{
FileInfo fiHtml = new FileInfo(Path.Combine(destDirectory.FullName,htmlFileName));
using (MemoryStream memoryStream = new MemoryStream())
{
memoryStream.Write(byteArray,byteArray.Length);
using (WordprocessingDocument wDoc = WordprocessingDocument.Open(memoryStream,true))
{
var imageDirectoryFullName =
fiHtml.FullName.Substring(0,fiHtml.FullName.Length - fiHtml.Extension.Length) + "_files";
var imageDirectoryRelativeName =
fiHtml.Name.Substring(0,fiHtml.Name.Length - fiHtml.Extension.Length) + "_files";
int imageCounter = 0;
var pageTitle = (string)wDoc
.CoreFilePropertiesPart
.GetXDocument()
.Descendants(DC.title)
.FirstOrDefault();
HtmlConverterSettings settings = new HtmlConverterSettings()
{
PageTitle = pageTitle,FabricateCssClasses = true,CssClassprefix = "pt-",RestrictToSupportedLanguages = false,RestrictToSupportednumberingFormats = false,ImageHandler = imageInfo =>
{
DirectoryInfo localDirInfo = new DirectoryInfo(imageDirectoryFullName);
if (!localDirInfo.Exists)
localDirInfo.Create();
++imageCounter;
string extension = imageInfo.ContentType.Split('/')[1].ToLower();
ImageFormat imageFormat = null;
if (extension == "png")
{
// Convert png to jpeg.
extension = "gif";
imageFormat = ImageFormat.Gif;
}
else if (extension == "gif")
imageFormat = ImageFormat.Gif;
else if (extension == "bmp")
imageFormat = ImageFormat.Bmp;
else if (extension == "jpeg")
imageFormat = ImageFormat.Jpeg;
else if (extension == "tiff")
{
// Convert tiff to gif.
extension = "gif";
imageFormat = ImageFormat.Gif;
}
else if (extension == "x-wmf")
{
extension = "wmf";
imageFormat = ImageFormat.Wmf;
}
// If the image format isn't one that we expect,ignore it,// and don't return markup for the link.
if (imageFormat == null)
return null;
FileInfo imageFileName = new FileInfo(imageDirectoryFullName + "/image" +
imageCounter.ToString() + "." + extension);
try
{
imageInfo.Bitmap.Save(imageFileName.FullName,imageFormat);
}
catch (System.Runtime.InteropServices.ExternalException)
{
return null;
}
XElement img = new XElement(Xhtml.img,new XAttribute(NoNamespace.src,imageDirectoryRelativeName + "/" + imageFileName.Name),imageInfo.ImgStyleAttribute,imageInfo.AltText != null ?
new XAttribute(NoNamespace.alt,imageInfo.AltText) : null);
return img;
}
};
XElement html = HtmlConverter.ConvertToHtml(wDoc,settings);
var body = html.Descendants(Xhtml.body).First();
body.AddFirst(
new XElement(Xhtml.p,new XElement(Xhtml.a,new XAttribute("href","/Default2.aspx"),"Go back to Upload Page")));
var htmlString = html.ToString(SaveOptions.disableFormatting);
File.WriteallText(fiHtml.FullName,htmlString,Encoding.UTF8);
}
}
}
结果中的 PDF 根本没有图像！
PDF 文件应该是这样的
但结果是没有图像，因为itext7支持base64图像。
我试过没有成功
HtmlConverter (html2pdf version 2.0.1)如何使用支持 base64 图像编辑我的代码以将 docx word 转换为 html 文件？
HMTL
这是 HTML 代码。
要查看 pdf 文件中的图像，我需要这部分
protected void Page_Load(object sender,EventArgs e)
{
PdfWriter writer = new PdfWriter(Response.OutputStream);
PdfDocument pdf = new PdfDocument(writer);
Document document = new Document(pdf);
using (MysqLConnection con =
new MysqLConnection(ConfigurationManager.ConnectionStrings["con"].ConnectionString))
{
using (MysqLCommand cmd =
new MysqLCommand("SELECT `HEAD` FROM `xmltable`;",myConnectionString))
{
cmd.Connection.open();
cmd.CommandType = CommandType.Text;
MysqLDataReader reader = cmd.ExecuteReader();
if (reader.HasRows)
{
while (reader.Read())
{
Paragraph contents = new Paragraph(reader.GetString("HEAD"))
.SetTextAlignment(TextAlignment.JUSTIFIED)
.SetFontSize(12);
nomefile = @"C:\\Desktop\Management_" + Guid.NewGuid() + ".pdf";
html = reader.GetString("HEAD").ToString();
dest = nomefile.ToString();
document.Add(contents);
HtmlConverter.ConvertToPdf(html,new FileStream(dest,FileMode.Create));
}
}
reader.Close();
cmd.Connection.Close();
}
}
document.Close();
Response.Clear();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-disposition","attachment; filename=" + dest);
Response.TransmitFile(dest);
Response.End();
}
改为
try
{
imageInfo.Bitmap.Save(imageFileName.FullName,imageFormat);
byte[] imageBytes = memoryStream.ToArray();
string base64String = Convert.ToBase64String(imageBytes);
}
（请注意，base64 编码的图像被截断以适合此页面）
带有 base64 编码图像的文件的浏览器视图和结果 PDF
<img src="01a5094b-2d44-4399-93b2-2cc2db7ebfc2_files/image1.gif" style="width: 2.875in; height: 0.4583333in" alt="Immagine 9" />
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
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