html转pdf

直接将html转换成pdf,用过其他的几种方式效果相当的不理想。最后找到wkhtmltopdf转换pdf效果还比较好，以下是解决方案。

第一步：下载wkhtmltopdf，加压并找到wkhtmltopdf.exe文件，可以将wkhtmltopdf.exe文件放到任意位置，建议放到程序的根目录中。

第二步：通过c#进程调用wkhtmltopdf.exe将html转换成pdf文件。以下是转换方法。

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using System; using System.Collections.Generic; using System.Linq; using System.Text;   using System.IO; using System.Diagnostics; using System.Configuration;   namespace GH.TechnicalSupervision.BLL2 {     public class PdfHelper     {         /// <summary>         /// HTML转换为PDF         /// </summary>         /// <param name="htmlPath">可以是本地路径，也可以是网络地址</param>         /// <param name="savePath">PDF文件保存的路径</param>         /// <returns></returns>         public bool HtmlConvertToPdf(string pdfExePath,string htmlPath, string savePath)         {             bool flag = false;             CheckFilePath(savePath);               ///这个路径为程序集的目录，因为我把应用程序 wkhtmltopdf.exe 放在了程序集同一个目录下             //string exePath = AppDomain.CurrentDomain.BaseDirectory.ToString() + "wkhtmltopdf.exe";"";             //string exePath = "C:\\Program Files (x86)\\wkhtmltopdf\\bin\\wkhtmltopdf.exe";             string exePath = pdfExePath;             if (!File.Exists(exePath))             {                 throw new Exception("No application wkhtmltopdf.exe was found.");             }               try             {                 ProcessStartInfo processStartInfo = new ProcessStartInfo();                 processStartInfo.FileName = exePath;                 processStartInfo.WorkingDirectory = Path.GetDirectoryName(exePath);                 processStartInfo.UseShellExecute = false;                 processStartInfo.CreateNoWindow = true;                 processStartInfo.RedirectStandardInput = true;                 processStartInfo.RedirectStandardOutput = true;                 processStartInfo.RedirectStandardError = true;                 processStartInfo.Arguments = GetArguments(htmlPath, savePath);                   Process process = new Process();                 process.StartInfo = processStartInfo;                 process.Start();                 process.WaitForExit();                   ///用于查看是否返回错误信息                 //StreamReader srone = process.StandardError;                 //StreamReader srtwo = process.StandardOutput;                 //string ss1 = srone.ReadToEnd();                 //string ss2 = srtwo.ReadToEnd();                 //srone.Close();                 //srone.Dispose();                 //srtwo.Close();                 //srtwo.Dispose();                   process.Close();                 process.Dispose();                   flag = true;             }             catch             {                 flag = false;             }             return flag;         }           /// <summary>         /// 获取命令行参数         /// </summary>         /// <param name="htmlPath"></param>         /// <param name="savePath"></param>         /// <returns></returns>         private string GetArguments(string htmlPath, string savePath)         {             if (string.IsNullOrEmpty(htmlPath))             {                 throw new Exception("HTML local path or network address can not be empty.");             }               if (string.IsNullOrEmpty(savePath))             {                 throw new Exception("The path saved by the PDF document can not be empty.");             }               StringBuilder stringBuilder = new StringBuilder();             //stringBuilder.Append(" --page-height 100 ");        //页面高度100mm             //stringBuilder.Append(" --page-width 100 ");         //页面宽度100mm             //stringBuilder.Append(" --header-center 我是页眉 ");  //设置居中显示页眉             //stringBuilder.Append(" --header-line ");         //页眉和内容之间显示一条直线             //stringBuilder.Append(" --footer-center \"Page [page] of [topage]\" ");    //设置居中显示页脚             //stringBuilder.Append(" --footer-line ");       //页脚和内容之间显示一条直线             stringBuilder.Append(" " + htmlPath + " ");       //本地 HTML 的文件路径或网页 HTML 的URL地址             stringBuilder.Append(" " + savePath + " ");       //生成的 PDF 文档的保存路径             return stringBuilder.ToString();         }           /// <summary>         /// 验证保存路径         /// </summary>         /// <param name="savePath"></param>         private void CheckFilePath(string savePath)         {             string ext = string.Empty;             string path = string.Empty;             string fileName = string.Empty;               ext = Path.GetExtension(savePath);             if (string.IsNullOrEmpty(ext) || ext.ToLower() != ".pdf")             {                 throw new Exception("Extension error:This method is used to generate PDF files.");             }               fileName = Path.GetFileName(savePath);             if (string.IsNullOrEmpty(fileName))             {                 throw new Exception("File name is empty.");             }               try             {                 path = savePath.Substring(0, savePath.IndexOf(fileName));                 if (!Directory.Exists(path))                 {                     Directory.CreateDirectory(path);                 }             }             catch             {                 throw new Exception("The file path does not exist.");             }         }     } }

　　

注意：转换的网页的字体有可能wkhtmltopdf不识别，导致转换后的pdf文件出现乱码。比如“宋体”不识别，但是“新宋体”能识别。