由于直接在页面上展示PDF会有编码困难及不安全等问题,所以想到先利用SWFTOOLS工具把PDF转成SWF格式的Flash文件然后在页面上利用ASP.NET自带的Flash播放器展示Flash文件,这样即简便又安全。
我们可以在用户上传PDF文件时把它转成SWF格式的Flash文件,这样就可以在用户需要查阅自己的PDF文件时直接调用Flash展示。
1. 下载SWFTOOLS软件,下载地址:http://www.swftools.org/download.html
2. 下载两个中文字体Gbsn00lp.ttf和gkai00mp.ttf,下载地址:http://code.google.com/p/atyu30/downloads/detail?name=gbsn00lp.ttf.tar.gz&can=2&q=
http://download.csdn.net/detail/blackjack2007u/1841186。
3.xpdfbin-win-3.03.zip、xpdf-chinese-simplified.tar.gz
下载地址:http://www.foolabs.com/xpdf/download.html
4. 首先安装SWFTOOLS,不考虑中文的情况下,一个pdf2swf.exe已经足够我们使用转换任务。安装完成 后,在安装目录下可以看到多个单独可以运行的exe文件:
我们只需要使用gpdf2swf.exe应用程序。
4. 因为C#代码中不能直接调用应用程序,所以我们应该调用运行命令CMD 来调用gpdf2swf.exe应用程序。
5. SWFTOOLS安装完成后,就可以使用,但因为该程序不能识别中文,所 以下面解决中文字符的问题。
a.解压缩xpdfbin-win-3.03.zip到指定目录(C:\xpdf)
b.解压缩xpdf-chinese-simplified.tar.gz到上面的目录下
c.拷贝两个字体文件gkai00mp.ttf、Gbsn00lp.ttf到CMap目录下
d.修改C:\xpdf\xpdf-chinese-simplified下的add-to-xpdfrc文件将路径该为本机安装 路径
e. 修改C:\xpdf\xpdfbin-win-3.03\doc 下的xpdfrc文件 ,把地址修改为本机地址
部署步骤:
1.上述步骤完成后我们就能在C#代码中使用了,可以先在CMD中试用
命令解释:-o后为你所要保存已转换成功的SWF文件保存地址,-t后为你需要转换的PDF的地址,-t后为调用中文字符
2.在C#中调用,贴上代码。
public partial class upload : System.Web.UI.Page
{
#region
//根目录
private static string ROOT_PATH = AppDomain.CurrentDomain.BaseDirectory;
//pdf转swf
private static string PDF2SWF_PATH = "D:\\PDFToSwf\\pdf2swf.exe";
//语言包路径
private static string XPDF_LANG_PATH = "C:\\xpdf\\xpdf-chinese-simplified";
//swf合并程序,目的为可以有翻页功能
private static string SWFCOMBINE_PATH = "D:\\PDFToSwf\\swfcombine.exe";
//SWFTOOLS工具自带的翻页FLASH
private static string SWFVIEWER_PATH = "D:\\PDFToSwf\\rfxview.swf";
#endregion
///
/// 运行Cmd命令
///
///命令字符串
///命令运行时间
private static double RunShell(string strShellCommand)
{
double spanMilliseconds = 0;
DateTime beginTime = DateTime.Now;
Process cmd = new Process();
cmd.StartInfo.FileName = "cmd.exe";
cmd.StartInfo.UseShellExecute = false;
cmd.StartInfo.CreateNoWindow = true;
cmd.StartInfo.Arguments = String.Format(@"/c {0}", strShellCommand);
cmd.Start();
cmd.WaitForExit();
cmd.Close();
DateTime endTime = DateTime.Now;
TimeSpan timeSpan = endTime - beginTime;
spanMilliseconds = timeSpan.TotalMilliseconds;
return spanMilliseconds;
}
public static bool DoPDF2Swf(string strPDFPath, string strSwfPath)
{
bool isSuccess = false;
//如果PDF不存在
if (!File.Exists(strPDFPath))
{
return false;
}
#region 清理已存在的Swf记录
if (!File.Exists(strSwfPath))
{
//已经存在,删除
File.Delete(strSwfPath);
}
#endregion
#region 将PDF转成Swf文件
string strCommand = string.Format("{0} -o {1} -t {2} -s languagedir={3}",
PDF2SWF_PATH, strSwfPath, strPDFPath, XPDF_LANG_PATH);
double spanMilliseconds = RunShell(strCommand);
strCommand = String.Format("{0} {1} viewport={2} -o {3}",
SWFCOMBINE_PATH, SWFVIEWER_PATH, strSwfPath, strSwfPath);
spanMilliseconds = RunShell(strCommand);
//第一步转档失败,则返回
if (!File.Exists(strSwfPath))
{
return false;
}
if (File.Exists(strSwfPath))
{
isSuccess = true;
}
return isSuccess;
#endregion
}
protected void Page_Load(object sender, EventArgs e)
{
HttpPostedFile httpFile = Request.Files["FileData"];
if (httpFile != null)
{
string fileName = httpFile.FileName;
#region
//string preStr = "";
//WebRequest req = WebRequest.Create(imgurlAry[i]);
//preStr = System.DateTime.Now.ToString() + "_";
//preStr = preStr.Replace("-", "");
//preStr = preStr.Replace(":", "");
//preStr = preStr.Replace(" ", "");
//preStr = "111";
//string uploadPath = Server.MapPath("temp\") + preStr + fileName;
//string uploadPath = "D:\\temp\" + fileName;
#endregion
//加入@""""是为了解决CMD不能识别空格的问题
string uploadPath = @""""+Server.MapPath("PDFFile\") + fileName+@"""";
if (Directory.Exists(Server.MapPath("PDFFile\")))
{
httpFile.SaveAs(uploadPath);
}
else
{
Directory.CreateDirectory(Server.MapPath("PDFFile\"));
httpFile.SaveAs(uploadPath);
}
string _fileName = Path.GetFileNameWithoutExtension(uploadPath);//获取文件名,除去后缀
string strSwfPath = Server.MapPath("SwfFile\") + _fileName + ".swf";
DoPDF2Swf(uploadPath, strSwfPath);
Session["filelist"] += uploadPath + "|";
Response.Write("文件: " + uploadPath + " 上传成功!");
}
}
}
3.完成上述步骤后,PDF文件就成功转换成SWF文件了,最后在页面上展示,贴上代码。
public static string AddSwf(string url)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append("<OBJECT codeBase='http://active.macromedia.com/flash5/cabs/swflash.cab#version=8,0,0,0'");
sb.Append(" height='100%' width='100%' classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000'>");
sb.Append("<PARAM NAME='Movie' VALUE='" + url + "'>");
sb.Append("<PARAM NAME='Play' VALUE='true'>");
sb.Append("<PARAM NAME='Loop' VALUE='true'>");
sb.Append("<PARAM NAME='Quality' VALUE='High'>");
sb.Append("<PARAM NAME='FLASHVARS' VALUE='zoomtype=3'>");
sb.Append("<embed src='" + url + @"' height='100%' height='100%' play='true' ALIGN='' loop='true' quality='high'
pluginspage='http://www.macromedia.com/go/getflashplayer'
type='application/x-shockwave-flash' flashvars='zoomtype=3'>");
sb.Append("</embed>");
sb.Append("</OBJECT>");
return sb.ToString(); }
然后aspx上调用,贴上代码
<head id="Head1" runat="server">
<title></title>
</head>
<body style="padding: 0px; margin: 0px">
<div>
<%=AddSwf("SwfFile/222.swf")%>
</div>
</body>
</html>
最后页面展示效果,有百度文库的感觉有么有
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