using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using Microsoft.Office.Interop.Word;
namespace JDOMS.WebAPI.Controllers.Zjn.Utils
{
 class WpsToPdf : IDisposable
 {
 dynamic wps;
 public WpsToPdf()
 {
  //创建wps实例，需提前安装wps
  Type type = Type.GetTypeFromProgID("KWps.Application");
  wps = Activator.CreateInstance(type);
 }
 /// <summary>
 /// 根据文件在服务器上的路径下载文件
 /// </summary>
 /// <param name="wpsFilename">Wps文件路径</param>
 /// <param name="pdfFilename">Pdf文件路径</param>
 /// <returns></returns>
 public void ToPdf(string wpsFilename, string pdfFilename = null)
 {
  if (wpsFilename == null)
  {
  throw new ArgumentNullException("wpsFilename"); 
  }
  if (pdfFilename == null)
  {
  pdfFilename = Path.ChangeExtension(wpsFilename, "pdf");
  }
  Console.WriteLine(string.Format(@"正在转换 [{0}] -> [{1}]", wpsFilename, pdfFilename));
  //用wps 打开word不显示界面
  dynamic doc = wps.Documents.Open(wpsFilename, Visible: false);
  //doc 转pdf 
  doc.ExportAsFixedFormat(pdfFilename, WdExportFormat.wdExportFormatPDF);
  doc.Close();
 }
 public void Dispose()
 {
  if (wps != null) { wps.Quit(); }
 }
 }
}