C# web实现word 转Html、office转Html、pdf转图片在线预览文件-白红宇

C# web实现word 转Html、office转Html、pdf转图片在线预览文件

阅读量：5039 次

发布时间：2019-06-12

本文共 9177 字，大约阅读时间需要 30 分钟。

改篇 pdf 预览再本机没问题，发布再iis中不行，（使用剪贴板的问题..excel和word 可以,）

pdf解决：请看我的博文 ----最终解决篇

详细配置及代码

word 转Html

1 ///   2         /// word转成html  3         /// 
  4         ///   5         private void WordToHtml(object wordFileName,string htmlWord) 6         { 7             //在此处放置用户代码以初始化页面  8             Word.ApplicationClass word = new Word.ApplicationClass(); 9             Type wordType = word.GetType();10             Word.Documents docs = word.Documents;11             //打开文件 12             Type docsType = docs.GetType();13             Word.Document doc = (Word.Document)docsType.InvokeMember("Open", System.Reflection.BindingFlags.InvokeMethod, null, docs, new Object[] { wordFileName, true, true });14             //转换格式，另存为 15             string a = doc.Comments.ToString();16             Type docType = doc.GetType();17             string wordSaveFileName = wordFileName.ToString();18 19       20 21            string strSaveFileName = htmlWord + "\\" + Path.GetFileNameWithoutExtension(wordSaveFileName) + ".html";22 23             object saveFileName = (object)strSaveFileName;24             docType.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod, null, doc, new object[] { saveFileName, Word.WdSaveFormat.wdFormatFilteredHTML });25             docType.InvokeMember("Close", System.Reflection.BindingFlags.InvokeMethod, null, doc, null);26             //退出 Word 27             wordType.InvokeMember("Quit", System.Reflection.BindingFlags.InvokeMethod, null, word, null);28             29         }

引入 Microsoft.Office.Interop.Word;

office转Html

///          /// Excel转成html         /// 
         public void ReadExcel(string rFilePath, string rHtmlFilePath)        {            Excel.Application repExcel = new Excel.Application();            Excel.Workbook workbook = null;            //xlsFile为Excel文件路径               workbook = repExcel.Application.Workbooks.Open(rFilePath,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value);            //htmlFile   是要另存的html文件名               object ofmt = Excel.XlFileFormat.xlHtml;            workbook.SaveAs(rHtmlFilePath,             ofmt,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Excel.XlSaveAsAccessMode.xlNoChange,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value,             Missing.Value);            object osave = false;            workbook.Close(osave, Missing.Value, Missing.Value);        }

引入Microsoft.Office.Interop.Excel;

pdf 转图片

说明：本方法用 acrobat 的官方接口

需要安装 acrobat professional 8.0或更高版本

然后再vs中添加com组件 abode acrobat 版本号 type library 只有安装了上面软件才回有

在web页头部添加 AspCompat="true" 控制台程序要在main函数上加 [STAThread] 保证单线程模型下才能访问剪贴板

using System.IO;

using System.Reflection;

using DataHelp;

using System.Text;

using System.Drawing.Imaging;

using System.Windows.Forms;

using System.Drawing;

using System.Runtime.InteropServices;

///         /// Pdf导图片        /// 
        ///         ///         ///         /// 
                     public string PDFToPic(string pdfInputPathDirectory, string pngOutputPath, ImageFormat format)        {            StringBuilder b = new StringBuilder();            ImageFormat formate = format;            // Acrobat objects            Acrobat.CAcroPDDoc pdfDoc = null;            Acrobat.CAcroPDPage pdfPage = null;            Acrobat.CAcroRect pdfRect = null;            Acrobat.CAcroPoint pdfPoint = null;            try            {                string[] files = new string[] { pdfInputPathDirectory };                string dic = Path.GetDirectoryName(pdfInputPathDirectory);                //string[] files = Directory.GetFiles(dic, "*.pdf");                for (int n = 0; n < files.Length; n++)                {                    string inputFile = files[n].ToString();                    string fileName = files[n].Substring(files[n].LastIndexOf(@"\") + 1).Replace(".pdf", "");                    // Will always be available as .NET framework ships with all                    pdfDoc = (Acrobat.CAcroPDDoc)Microsoft.VisualBasic.Interaction.CreateObject("AcroExch.PDDoc", "");                    bool ret = pdfDoc.Open(inputFile);                    if (!ret)                    {                        throw new FileNotFoundException();                    }                    else                    {                        b = b.AppendLine("pdfDoc成功打开文件！！！");                    }                    // Get the number of pages (to be used later if you wanted to store that information)                    int pageCount = pdfDoc.GetNumPages();                    b = b.AppendLine("
     
      ");                    for (int i = 0; i < pageCount; i++)                    {                        // Get the first page                        pdfPage = (Acrobat.CAcroPDPage)pdfDoc.AcquirePage(i);                        pdfPoint = (Acrobat.CAcroPoint)pdfPage.GetSize();                        b = b.AppendLine("
        pdfPoint.x=" + pdfPoint.x + ";pdfPoint.y=" + pdfPoint.y + "   
");                        pdfRect = (Acrobat.CAcroRect)Microsoft.VisualBasic.Interaction.CreateObject("AcroExch.Rect", "");                        pdfRect.Left = 0;                        pdfRect.right = pdfPoint.x;                        pdfRect.Top = 0;                        pdfRect.bottom = pdfPoint.y;                        // Render to clipboard, scaled by 100 percent (ie. original size)                        // Even though we want a smaller image, better for us to scale in .NET                        // than Acrobat as it would greek out small text                        // see http://www.adobe.com/support/techdocs/1dd72.htm                        //清空剪贴板                        //Clipboard.Clear();                       //b = b.AppendLine("
        Clipboard.Clear();清空剪贴板    
");                       pdfPage.CopyToClipboard(pdfRect, 0, 0, 100);                        //b = b.AppendLine("
        pdfPage.CopyToClipboard(pdfRect, 0, 0, 100)=" +pdfPage.CopyToClipboard(pdfRect, 0, 0, 100)+ ";复制到剪贴板   
");                        System.Windows.Forms.IDataObject clipboardData = Clipboard.GetDataObject();                        bool c = false;                        if (clipboardData!=null )                        {                            c = true;                        }                        b = b.AppendLine("
         Clipboard.GetDataObject()=" + c + "剪贴板中是否有数据;   
");                       b = b.AppendLine("
        clipboardData.GetDataPresent(DataFormats.Bitmap)=" + clipboardData.GetDataPresent(DataFormats.Bitmap) + ";   
");                        if (clipboardData.GetDataPresent(DataFormats.Bitmap))                        {                            Bitmap pdfBitmap = (Bitmap)clipboardData.GetData(DataFormats.Bitmap);                            b = b.AppendLine("
        生成图片的大小： pdfBitmap.Size.Height=" + pdfBitmap.Size.Height + "; pdfBitmap.Size.Width=" + pdfBitmap.Size.Width + "   
");                                                       string dPath = Path.Combine(pngOutputPath, i.ToString("0000") + "." + formate.ToString());                            b = b.AppendLine("
        生成图片的路径：" + dPath + ";   
");                            pdfBitmap.Save(                           dPath, formate);                            pdfBitmap.Dispose();                        }                        b = b.AppendLine("
               
      第" + (i + 1) + "页");                    }                    pdfDoc.Close();                    // Not sure how why it is to do this, but Acrobat is not the best behaved COM object                    // see http://blogs.msdn.com/yvesdolc/archive/2004/04/17/115379.aspx                    Marshal.ReleaseComObject(pdfPage);                    Marshal.ReleaseComObject(pdfRect);                    Marshal.ReleaseComObject(pdfDoc);                }                b = b.AppendLine("
     
");            }            catch (System.Exception ex)            {                Response.Write(ex.ToString());            }            return b.ToString();        }

关于发布：

offic 组件发布问题

我的服务器环境是 windows servers 2008 64位操作系统

1、在服务器上安装Office的Excel相关软件（推荐安装Office 2007）；

2、 Cmd中输入命令 comexp.msc -32 启动组件服务（启动组件服务方法运行 mmc、mmc -32(32) 、DCOMCNFG.exe(64)）不行一个一个

3、依次双击"组件服务"->"计算机"->"我的电脑"->"DCOM配置"；

4、在"DCOM配置"中找到"Microsoft Excel Application",在它上面点击右键,然后点击"属性",弹出"Microsoft Excel应用程序属性"对话框；

5、点击"标识"标签,选择启动用户（默认选项）；

6、点击"安全"标签,在以下三个项目中都选中 “自定义” 添加 ”everyone” 并分配最大权限（全选）

7、设置Web.config文件在Web.config文件的<system.web>中加入<identity impersonate="true"/> （没有这一步会报Excel进程无法打开相应的excel文件）。

Ok了

Word 配置同上。

关于pdf 发布：需要在服务器上安装上诉软件

我在本机vs 和服务器vs中测试没问题，发布到iis中无法取到剪贴板中的数据也不报错 iis中应用程序池的权限我也设置到最大，依然无果。

还是这种 iis中访问剪贴板的方法违反安全性或剪贴板只能在单线程模型下访问与这个相悖？？？？？？？？？？？？？？？？

欢迎留言探讨》》》》》

转载于:https://www.cnblogs.com/DamonTang/archive/2012/11/29/2794110.html

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