FlexPaper控件实现文档的上传和预览

   引言

   之前在一个项目中初识了这个控件，当时自己对这个东西非常高的好奇就尝试着做了一个Demo，最近在项目中

遇到了这个需求，所以我向组长推荐了我的这中做法，在之前的系统中是将文档转换成html然后在前台中预览，这样

有一个弊端就是在预览的时候会破坏文档原来的格式，感觉不符合全心全意为人民服务的思想，所以就采用了我的这

种做法。下面给大家分享这个控件的用法；

   首先给大家展示一张效果图：

     


   和之前的预览相比最重要的就是不会破坏文档的样式，和上传时候的文档的上市一模一样；

  一、上传并将文档转换成.swf格式的文件

   这一步需要我们在上传的过程中来实现这种转换，代码如下：

   上传的前台界面代码：

<div class="easyui-panel" style="width:1380px;height:180px; font-size:16px;">
<span class="tip" style="font-size:16px;color :red; font-weight :bold ">提示：请您先选择一个文件(文档大小不能超过4M，格式为：doc//docx//xls//xlsx//zip//rar)</span>

  
<br />
<br />
@using (Html.BeginForm("UpDocument", "DocumentManagement", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<form id="Batch" method="post">
<input type="file" name="files" id="FileUpload" style="height :40px;width:200px;">

 

<input type="submit" name="btnUpload" value="上传" id="btnUpload" style="height:20px;width:55px" />

</form>
}

</div>

#region 上传文档,将文档的相应信息插入 到数据库——郑浩——2016年2月28日11:49:17
public ActionResult UpDocument()
{

//变量定义pdf转为swf的工具路径
string pdf2swfToolPath = System.Web.HttpContext.Current.Server.MapPath("~/FlexPaper/pdf2swf.exe");

//定义保存路径的变量
string OfficeFilePath = Server.MapPath("~/File/UpFile/");
string PdfFilePath = Server.MapPath("~/File/TeaFile/PDF/");
string SWFFilePath = Server.MapPath("~/File/TeaFile/SWF/");
string SwfFileName = String.Empty;

HttpPostedFileBase file = Request.Files["files"];
string strFileName = "";
string strSavePath;
string ClientPath = AppDomain.CurrentDomain.BaseDirectory + "File\\UpFile\\";

if (file == null || file.ContentLength <= 0)
{

Response.Write("<script>alert('文件不能为空')</script>");
return View("~/Views/DocumentManagement/UploadWord.cshtml");
}

string strFilename = Path.GetFileName(file.FileName);
int intFilesize = file.ContentLength;//获取上传文件的大小单位为字节byte
string fileEx = System.IO.Path.GetExtension(strFilename);//获取上传文件的扩展名
string strNoFileName = System.IO.Path.GetFileNameWithoutExtension(strFilename);//获取无扩展名的文件名
int Maxsize = 4000 * 1024;//定义上传文件的最大空间大小为4M
string FileType = ".xls,.xlsx,.doc,docx,.zip,.rar";//定义上传文件的类型字符串

strFileName = strNoFileName + DateTime.Now.ToString("yyyyMMddhhmmss") + fileEx;
if (!FileType.Contains(fileEx))
{

Response.Write("<script>alert('文件类型不对，请参考提示上传文件')</script>");
return View("~/Views/DocumentManagement/UploadWord.cshtml");
}
if (intFilesize >= Maxsize)
{

Response.Write("<script>alert('上传文件超过4M，不能上传')</script>");
return View("~/Views/DocumentManagement/UploadWord.cshtml");

}
strSavePath = Path.Combine(ClientPath, strFileName);
file.SaveAs(strSavePath);
//开始格式转换

string PdfFileName = OfficeToPdf(OfficeFilePath, strFileName, PdfFilePath);
SwfFileName = PdfToSwf(pdf2swfToolPath, PdfFilePath, PdfFileName, SWFFilePath);

//将对应的数据保存到数据库中
DocumentViewModel documentView = new DocumentViewModel()
{
DocumentID = Guid.NewGuid(),
UploadYear = DateTime.Now,
DocumentName = strFileName,
DocumentPath = "File\\UpFile\\" + strFileName,
IsEnable = 1,
Operator = "admin"
};

//调用后台的方法
bool flag = iDocument.UpDocument(documentView);
if (flag)
{
Response.Write("<script>alert('文件上传成功！！')</script>");
return View("~/Views/DocumentManagement/UploadWord.cshtml");
}
else
{

Response.Write("<script>alert('文件上传失败！！')</script>");
return View("~/Views/DocumentManagement/UploadWord.cshtml");
}
}
#endregion

  自己编写的两个转换的类：

 

#region office转换过程 -郑浩-2016年2月29日10:44:05
#region OfficeToPdf-将office文件转化为pdf文件，文件名称不变-郑浩-2016年2月29日10:44:29
/// <summary>
/// 将office文件转化为pdf文件，文件名称不变
/// </summary>
/// <param name="pdf2swfPath">pdf2swfPath工具所在路径</param>
/// <param name="OfficePath">office存储路径</param>
/// <param name="OfficeName">office文件名称</param>
/// <param name="destPath">pdf存储路径</param>
/// <returns>返回生成pdf的文件名,无效则返回空</returns>
private string OfficeToPdf(string OfficePath, string OfficeName, string destPath)
{
string fullPathName = OfficePath + OfficeName;//包含 路径 的全称
string fileNameWithoutEx = System.IO.Path.GetFileNameWithoutExtension(OfficeName);//不包含路径，不包含扩展名
string extendName = System.IO.Path.GetExtension(OfficeName).ToLower();//文件扩展名
string saveName = destPath + fileNameWithoutEx + ".pdf";
string returnValue = fileNameWithoutEx + ".pdf";

switch (extendName)
{
case ".doc":
PreviewConvert.WordToPDF(fullPathName, saveName);
break;
case ".docx":
PreviewConvert.WordToPDF(fullPathName, saveName);
break;
case ".xls":
PreviewConvert.ExcelToPDF(fullPathName, saveName);
break;
case ".xlsx":
PreviewConvert.ExcelToPDF(fullPathName, saveName);
break;
default:
returnValue = "";
break;
}
return returnValue;

}
#endregion

#region PdfToSwf-将pdf文件转化为swf文件，文件名称不变-郑浩-2016年2月29日10:51:50
/// <summary>
/// 将pdf文件转化为swf文件，文件名称不变
/// </summary>
/// <param name="pdf2swfPath">pdf2swfPath工具所在路径</param>
/// <param name="PdfPath">pdf存储路径</param>
/// <param name="PdfName">pdf文件名称</param>
/// <param name="destPath">swf存储路径</param>
/// <returns></returns>
private string PdfToSwf(string pdf2swfPath, string PdfPath, string PdfName, string destPath)
{
string fullPathName = PdfPath + PdfName;//包含 路径 的全称
string fileNameWithoutEx = System.IO.Path.GetFileNameWithoutExtension(PdfName);//不包含路径，不包含扩展名
string extendName = System.IO.Path.GetExtension(PdfName).ToLower();//文件扩展名
string saveName = destPath + fileNameWithoutEx + ".swf";
string returnValue = fileNameWithoutEx + ".swf";
if (extendName != ".pdf")
{
returnValue = "";
}
else
{
PreviewConvert.PDFToSWF(pdf2swfPath, fullPathName, saveName);
}
return returnValue;
}

#endregion

#endregion

   转换的公共类：

 

public class PreviewConvert
{
/// <summary>
/// 把Word文件转换成为PDF格式文件
/// </summary>
/// <param name="sourcePath">源文件路径</param>
/// <param name="targetPath">目标文件路径</param>
/// <returns>true=转换成功</returns>
public static bool WordToPDF(string sourcePath, string targetPath)
{
bool result = 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(sourcePath);
document.SaveAs();
document.ExportAsFixedFormat(targetPath, exportFormat);
result = true;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
result = false;
}
finally
{
if (document != null)
{
document.Close();
document = null;
}
if (application != null)
{
application.Quit();
application = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
return result;
}

/// <summary>
/// 把Microsoft.Office.Interop.Excel文件转换成PDF格式文件
/// </summary>
/// <param name="sourcePath">源文件路径</param>
/// <param name="targetPath">目标文件路径</param>
/// <returns>true=转换成功</returns>
public static bool ExcelToPDF(string sourcePath, string targetPath)
{
bool result = false;
Microsoft.Office.Interop.Excel.XlFixedFormatType targetType = Microsoft.Office.Interop.Excel.XlFixedFormatType.xlTypePDF;
object missing = Type.Missing;
Microsoft.Office.Interop.Excel.ApplicationClass application = null;
Microsoft.Office.Interop.Excel.Workbook workBook = null;
try
{
application = new Microsoft.Office.Interop.Excel.ApplicationClass();
application.Visible = false;
workBook = application.Workbooks.Open(sourcePath);
workBook.SaveAs();
workBook.ExportAsFixedFormat(targetType, targetPath);
result = true;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
result = false;
}
finally
{
if (workBook != null)
{
workBook.Close(true, missing, missing);
workBook = null;
}
if (application != null)
{
application.Quit();
application = null;
}
GC.Collect();
GC.WaitForPendingFinalizers();
GC.Collect();
GC.WaitForPendingFinalizers();
}
return result;
}

/// <summary>
/// 把PDF文件转化为SWF文件
/// </summary>
/// <param name="toolPah">pdf2swf工具路径</param>
/// <param name="sourcePath">源文件路径</param>
/// <param name="targetPath">目标文件路径</param>
/// <returns>true=转化成功</returns>
public static bool PDFToSWF(string toolPah, string sourcePath, string targetPath)
{
Process pc = new Process();
bool returnValue = true;

string cmd = toolPah;
string args = " -t " + sourcePath + " -s flashversion=9 -o " + targetPath;
try
{
ProcessStartInfo psi = new ProcessStartInfo(cmd, args);
psi.WindowStyle = ProcessWindowStyle.Hidden;
pc.StartInfo = psi;
pc.Start();
pc.WaitForExit();
}
catch (Exception ex)
{
returnValue = false;
throw new Exception(ex.Message);
}
finally
{
pc.Close();
pc.Dispose();
}
return returnValue;
}

/// <summary>
/// png、jpg和jpeg文件的转化
/// </summary>
/// <param name="toolPah"></param>
/// <param name="sourcePath"></param>
/// <param name="targetPath"></param>
/// <returns></returns>
public static bool PicturesToSwf(string toolPah, string sourcePath, string targetPath)
{
Process pc = new Process();
bool returnValue = true;

string cmd = toolPah;
string args = " " + sourcePath + " -o " + targetPath + " -T 9";
//如果是多个图片转化为swf 格式为 ..jpeg2swf.exe C:\1.jpg C:\2.jpg -o C:\swf1.swf
try
{
ProcessStartInfo psi = new ProcessStartInfo(cmd, args);
psi.WindowStyle = ProcessWindowStyle.Hidden;
pc.StartInfo = psi;
pc.Start();
pc.WaitForExit();
}
catch (Exception ex)
{
returnValue = false;
throw new Exception(ex.Message);
}
finally
{
pc.Close();
pc.Dispose();
}
return returnValue;
}
/// <summary>
/// Gif文件转化为swf
/// </summary>
/// <param name="toolPah"></param>
/// <param name="sourcePath"></param>
/// <param name="targetPath"></param>
/// <returns></returns>
public static bool GifPicturesToSwf(string toolPah, string sourcePath, string targetPath)
{
Process pc = new Process();
bool returnValue = true;

string cmd = toolPah;
string args = " " + sourcePath + " -o " + targetPath;
try
{
ProcessStartInfo psi = new ProcessStartInfo(cmd, args);
psi.WindowStyle = ProcessWindowStyle.Hidden;
pc.StartInfo = psi;
pc.Start();
pc.WaitForExit();
}
catch (Exception ex)
{
returnValue = false;
throw new Exception(ex.Message);
}
finally
{
pc.Close();
pc.Dispose();
}
return returnValue;
}
}

   二、预览

 前台代码：这里需要我们引入一个封装的js：flexpaper_flash.js；

  

@*文档预览*@
<div id="dlgPreview" closed="true" class="easyui-dialog" style="width: 750px; height: 750px;padding-left: 0px;"
buttons="#dlg-buttons" title="添加">

<form id="PreviewHomeWork" method="post">
@*method="post" action="/TeaQueryHomework/AddHomeWork"*@
<div @*style="margin-top:20px;margin-left:auto ;margin-right :auto"*@>
<a id="viewerPlaceHolder" style="width: 718px; height: 750px; display: block;"></a>
</div>
</form>
</div>

 js代码

//文档预览
function preview() {

var selectRow = $("#dg").datagrid("getSelections")

var name = selectRow[0].DocumentName;

var result = name.split(".");

documentName = result[0] + ".swf";

$("#dlgPreview").dialog('open');

//var path = "工作流研究的历程20160229012547.documentName"
var target = "../../File/TeaFile/SWF/" + documentName;
//var test = "../../Content/TeaFile/SWF/成绩管理.swf";
//var target = "../../Content/TeaFile/SWF/word上传验证.swf";
var fp = new FlexPaperViewer(
'../../FlexPaper/FlexPaperViewer',           /* 对应FlexPaperViewer.swf文件*/
'viewerPlaceHolder', {config : {
SwfFile: escape(target),
Scale : 0.6,
ZoomTransition : 'easeOut',
ZoomTime : 0.5,
ZoomInterval : 0.2,
FitPageOnLoad : true,
FitWidthOnLoad : true,
FullScreenAsMaxWindow : false,
ProgressiveLoading : false,
MinZoomSize : 0.2,
MaxZoomSize : 5,
SearchMatchAll : false,
InitViewMode : 'Portrait',
ViewModeToolsVisible : true,
ZoomToolsVisible : true,
NavToolsVisible : true,
CursorToolsVisible : true,
SearchToolsVisible : true,
localeChain: 'zh_CN'
}
});
$("#dlgPreview").dialog('open').dialog('setTitle', '预览');
}

    小结

   上面就是对于这个Flexpaper控件的使用，我们在平时的时候应该多了解一些第三方控件，并不是说第三方控件

是好滴，而是说我们在实现需求的时候会多一些思路，这样就不会因为某个问题而焦头烂额，因为我们会采用多种方

法来实现，一条思路不同不至于导致系统不能继续。希望上面的分享能给大家带来帮助！！