转载地址：http://www.cnblogs.com/sword-successful/p/4031823.html
引言
结合上个项目和目前做的这个项目，其中都用到了Office文件在线预览，目前项目中是用到公司购买的Ntko控件，该控件每次浏览文件时则会提示安装信任插件，很繁琐，而且浏览效果不好。 提到Office文件在线预览，那么效果最好的应该就是百度文库的效果了，所以今天就忙里偷闲自己搞了下。
用到知识点
1、Office文件转化为Pdf文件。直接用.Net类库：Microsoft.Office.Interop.Excel、Microsoft.Office.Interop.Powerpoint、Microsoft.Office.Interop.Word、Office。 我本机装的office2013,所以我选择的是12.0的。
2、使用SwfTools将Pdf文件转化为Swf文件。
3、使用众所周知的FlexPaper浏览Swf文件(预览时有水印，不知道怎么去掉)。
Demo过程中遇到的问题
1、提示："无法嵌入互操作类型Microsoft.Office.Interop.Word.ApplicationClass,请改用使用的接口"
解决：右键Dll,嵌入互操作类型改为false即可。
2、用到MsoTriState.msoTrue枚举类型参数时需要饮用Office.dll。 我一开始就没引用这个文件。
3、生成Swf文件时需要传入完整的路径，我一开始只传入了路径，没有swf文件名，试了几次没成功。
效果图
转化代码
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public class OfficeHelper { /// <summary> /// Word to Pdf /// </summary> /// <param name="srcFilePath"></param> /// <param name="targetFilePath"></param> /// <returns></returns> public static bool WordToPdf(string srcFilePath, string targetFilePath) { bool rs = false; Microsoft.Office.Interop.Word.WdExportFormat exportFormat = Microsoft.Office.Interop.Word.WdExportFormat.wdExportFormatPDF; Microsoft.Office.Interop.Word.ApplicationClass application = null; Microsoft.Office.Interop.Word.Document document = null; try { application = new Microsoft.Office.Interop.Word.ApplicationClass(); application.Visible = false; document = application.Documents.Open(srcFilePath); document.SaveAs(); document.ExportAsFixedFormat(targetFilePath, exportFormat); rs = true; } catch (Exception) { rs = false; throw; } finally { if (document != null) { document.Close(); document = null; } if (application != null) { application.Quit(); application = null; } GC.Collect(); GC.WaitForPendingFinalizers(); } return rs; } /// <summary> /// Excel To Pdf /// </summary> /// <param name="srcFilePath"></param> /// <param name="targetFilePath"></param> /// <returns></returns> public static bool ExcelToPdf(string srcFilePath, string targetFilePath) { bool rs = false; Microsoft.Office.Interop.Excel.XlFixedFormatType exportFormat = Microsoft.Office.Interop.Excel.XlFixedFormatType.xlTypePDF; Microsoft.Office.Interop.Excel.ApplicationClass application = null; Microsoft.Office.Interop.Excel.Workbook document = null; try { application = new Microsoft.Office.Interop.Excel.ApplicationClass(); application.Visible = false; document = application.Workbooks.Open(srcFilePath); document.SaveAs(); document.ExportAsFixedFormat(exportFormat, targetFilePath); rs = true; } catch (Exception) { rs = false; throw; } finally { if (document != null) { document.Close(); document = null; } if (application != null) { application.Quit(); application = null; } GC.Collect(); GC.WaitForPendingFinalizers(); } return rs; } /// <summary> /// PPT To Pdf /// </summary> /// <param name="srcFilePath"></param> /// <param name="targetFilePath"></param> /// <returns></returns> public static bool PptToPdf(string srcFilePath, string targetFilePath) { bool result; Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType targetFileType = Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType.ppSaveAsPDF; object missing = Type.Missing; Microsoft.Office.Interop.PowerPoint.ApplicationClass application = null; Microsoft.Office.Interop.PowerPoint.Presentation persentation = null; try { application = new Microsoft.Office.Interop.PowerPoint.ApplicationClass(); persentation = application.Presentations.Open(srcFilePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse); persentation.SaveAs(targetFilePath, targetFileType, Microsoft.Office.Core.MsoTriState.msoTrue); result = true; } catch (Exception e) { Console.WriteLine(e.Message); result = false; } finally { if (persentation != null) { persentation.Close(); persentation = null; } if (application != null) { application.Quit(); application = null; } GC.Collect(); GC.WaitForPendingFinalizers(); GC.Collect(); GC.WaitForPendingFinalizers(); } return result; } /// <summary> /// Pdf To Swf /// </summary> /// <param name="swfTools">Swf转化工具路径</param> /// <param name="srcFilePath"></param> /// <param name="targetFilePath"></param> /// <returns></returns> public static bool PdfToSwf(string toolsPath, string cmd) { bool iss = false;//判断是否转换成功，默认失败 try { using (Process p = new Process()) { ProcessStartInfo psi = new ProcessStartInfo(toolsPath, cmd); p.StartInfo = psi; p.Start(); p.WaitForExit(); iss = true;//转换成功 } } catch { } return iss; } } |
/// <summary>
/// Pdf文件转化为Swf
/// </summary>
/// <param name="swfTools">转化工具路径</param>
/// <param name="pdfPath">pdf文件目录</param>
/// <param name="pdfFileName">pdf文件名</param>
/// <param name="desPath">保存swf路径</param>
/// <returns></returns>
protected string PdfToSwf(string swfTools, string pdfPath, string pdfFileName, string desPath)
{
string fileFullName =Path.Combine(pdfPath,pdfFileName);
string fileFullNameWithoutEx = Path.GetFileNameWithoutExtension(pdfFileName);
string ext = Path.GetExtension(pdfFileName).ToLower();
string saveSwfPath = desPath + fileFullNameWithoutEx + ".swf";
string rs = fileFullNameWithoutEx + ".swf";
string cmdStr = " -t "" + fileFullName + "" -s flashversion=9 -o "" + saveSwfPath + """;
bool iss = OfficeHelper.PdfToSwf(swfTools, cmdStr);
return rs;
}
/// <summary>
/// Office文件转pdf文件
/// </summary>
/// <param name="officePath">office文件保存路径</param>
/// <param name="officeFileName">office文件名</param>
/// <param name="pdfPath">保存pdf路径</param>
protected string OfficeToPdf(string officePath, string officeFileName, string pdfPath)
{
string fullPathName = Path.Combine(officePath, officeFileName);
string fileNameWithoutEx = Path.GetFileNameWithoutExtension(officeFileName);
string ext = Path.GetExtension(officeFileName).ToLower();
string savePdfPath = pdfPath + fileNameWithoutEx + ".pdf";
string retValue = fileNameWithoutEx + ".pdf";
switch (ext)
{
case ".doc":
OfficeHelper.WordToPdf(fullPathName, savePdfPath);
break;
case ".docx":
OfficeHelper.WordToPdf(fullPathName, savePdfPath);
break;
case ".xls":
OfficeHelper.ExcelToPdf(fullPathName, savePdfPath);
break;
case ".xlsx":
OfficeHelper.ExcelToPdf(fullPathName, savePdfPath);
break;
case ".ppt":
OfficeHelper.PptToPdf(fullPathName, savePdfPath);
break;
case ".pptx":
OfficeHelper.PptToPdf(fullPathName, savePdfPath);
break;
}
return retValue;
}
参考
在Demo的过程中，学习和参考了两位博友的文章，在此表示感谢
Wolfy: http://www.cnblogs.com/wolf-sun/p/3569960.html
静以修身:http://www.cnblogs.com/zzPrince/p/3378336.html
源代码：http://yunpan.cn/cAhzwWhy5bgVD （提取码：7900）