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


     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 /// <summary> 
     2         /// word转成html 
     3         /// </summary> 
     4         /// <param name="wordFileName"></param> 
     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

    /// <summary> 
            /// Excel转成html 
            /// </summary> 
            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;

      /// <summary>
            /// Pdf导图片
            /// </summary>
            /// <param name="pdfInputPathDirectory"></param>
            /// <param name="pngOutputPath"></param>
            /// <param name="format"></param>
            /// <returns></returns>
            
            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("<span>pdfDoc成功打开文件!!!</span>");
                        }
                        // Get the number of pages (to be used later if you wanted to store that information)
                        int pageCount = pdfDoc.GetNumPages();
                        b = b.AppendLine("<ul style='azimuth:center; list-style-type:none;' >");
    
    
                        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("<li>  <span>pdfPoint.x=" + pdfPoint.x + ";pdfPoint.y=" + pdfPoint.y + "</span>   </li>");
                            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("<li>  <span>Clipboard.Clear();清空剪贴板 </span>   </li>");
    
                           pdfPage.CopyToClipboard(pdfRect, 0, 0, 100);
    
                            //b = b.AppendLine("<li>  <span>pdfPage.CopyToClipboard(pdfRect, 0, 0, 100)=" +pdfPage.CopyToClipboard(pdfRect, 0, 0, 100)+ ";复制到剪贴板</span>   </li>");
    
    
                            System.Windows.Forms.IDataObject clipboardData = Clipboard.GetDataObject();
                            bool c = false;
                            if (clipboardData!=null )
                            {
                                c = true;
                            }
    
    
                            b = b.AppendLine("<li>  <span> Clipboard.GetDataObject()=" + c + "剪贴板中是否有数据;</span>   </li>");
    
    
    
                           b = b.AppendLine("<li>  <span>clipboardData.GetDataPresent(DataFormats.Bitmap)=" + clipboardData.GetDataPresent(DataFormats.Bitmap) + ";</span>   </li>");
    
                            if (clipboardData.GetDataPresent(DataFormats.Bitmap))
                            {
                                Bitmap pdfBitmap = (Bitmap)clipboardData.GetData(DataFormats.Bitmap);
    
                                b = b.AppendLine("<li>  <span>生成图片的大小: pdfBitmap.Size.Height=" + pdfBitmap.Size.Height + "; pdfBitmap.Size.Width=" + pdfBitmap.Size.Width + "</span>   </li>");
    
    
                               
                                string dPath = Path.Combine(pngOutputPath, i.ToString("0000") + "." + formate.ToString());
    
                                b = b.AppendLine("<li>  <span>生成图片的路径:" + dPath + ";</span>   </li>");
    
    
                                pdfBitmap.Save(
                               dPath, formate);
                                pdfBitmap.Dispose();
                            }
                            b = b.AppendLine("<li>  <img src='..\\" + imgDire + "\\" + i.ToString("0000") + "." + formate.ToString() + "'  />       </li><span>第" + (i + 1) + "页</span>");
                        }
    
                        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("</ul>");
                }
                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》》》》》

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  • 原文地址:https://www.cnblogs.com/DamonTang/p/2794110.html
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