从HTML生成PDF文件

从HTML生成PDF文件

public static void WriterPDF(string tempFileName, bool isLowerWindows = true, bool withMarkwater = true)
{
    string wkhtmltopdfPath = ResourceUtilities.WkhtmltopdfPathLower;
    if (!isLowerWindows)
    {
        wkhtmltopdfPath = ResourceUtilities.WkhtmltopdfPathHigher;
    }

    var pi = new ProcessStartInfo(wkhtmltopdfPath);
    pi.CreateNoWindow = true;
    pi.UseShellExecute = false;
    if (!Directory.Exists(ResourceUtilities.WkhtmltoxFolder))
    {
        Directory.CreateDirectory(ResourceUtilities.WkhtmltoxFolder);
    }

    if (!Directory.Exists(ResourceUtilities.PDFTempFolder))
    {
        Directory.CreateDirectory(ResourceUtilities.PDFTempFolder);
    }

    pi.WorkingDirectory = ResourceUtilities.WkhtmltoxFolder;
    string[] result = CreateWkhtmltopdfArguments(tempFileName, withMarkwater);
    pi.Arguments = result[0];

    using (var process = Process.Start(pi))
    {
        process.WaitForExit(99999);
        Debug.WriteLine(process.ExitCode);
    }

    if (withMarkwater)
    {
        string pdfExportFile = ExportFilePathHelper.GetExportFilePath() + tempFileName + ".pdf";
        AddWatermark(result[1], pdfExportFile);
        //IoHelper.DeleteFile(ResourceUtilities.PDFTempFolder + tempFileName + ".pdf");
        string htmlTempFolder = ResourceUtilities.HtmlTempFolder.Replace("\\", "/");
        string htmlTempFile = htmlTempFolder + tempFileName + ".html";
        //IoHelper.DeleteFile(htmlTempFile);
    }
}
public static string[] CreateWkhtmltopdfArguments(string fileName, bool withMarkwater = false)
{

    string arguments = "file:///";
    string htmlTempFolder = ResourceUtilities.HtmlTempFolder.Replace("\\", "/");
    string htmlTempFile = htmlTempFolder + fileName + ".html";
    string pdfExportFolder = ExportFilePathHelper.GetExportFilePath();
    if (!Directory.Exists(pdfExportFolder))
    {
        Directory.CreateDirectory(pdfExportFolder);
    }

    string pdfExportFile = pdfExportFolder + fileName + ".pdf";
    if (withMarkwater)
    {
        string tempExportFolder = ResourceUtilities.PDFTempFolder;
        pdfExportFile = tempExportFolder + fileName + ".pdf";
    }

    arguments = arguments + htmlTempFile + " " + pdfExportFile;
    string[] result = new string[] { arguments, pdfExportFile };
    return result;

}

有几个地方要注意

1. 使用的是wkhtmltopdf这个C++编写的工具
2. 这个工具有两个主要的版本，一个是依赖VS2013 C++ Runtime编译的，一个是依赖早期的类库编译的，要根据自己的操作系统判断使用哪一个。官网地址http://wkhtmltopdf.org/downloads.html