PDF在线预览，兼容IE，CHROME
https://files.cnblogs.com/w519/PDFViewSolution.rar
本人写的PDF在线预览DEMO使用了pdfobject.js和adobe Reader阅读器。
因为PDFobjcet.js不兼容IE浏览器，而，所以在chrome浏览器上pdfobjcet.js打开PDF,而IE浏览器中使用adobe Reader阅读器打开PDF。
问题：对于浏览器中设置了默认迅雷下载，当单击网页中a标签链接时候，迅雷监测“链接”，带有.pdf,.exe等结尾扩展名，默认为下载，不能跳转页面。
方法：可以将url中文件扩展名去掉，就不会迅雷下载！
1.在Default.aspx页面判断浏览器，如果是IE，且判断是否安装了adobe Reader，跳转到PDFView.aspx页面，在后台输出PDF文件。如果是chrome就用pdfobject.js，在本页面输出PDF
Default.aspx代码
<script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> <script src="Scripts/pdfobject.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { var w = $(document).width(); var h = $(document).height(); $("#pdf1").css("width", w).css("height", h); // 下面代码都是处理IE浏览器的情况 if (window.ActiveXObject || "ActiveXObject" in window) { //判断是否为IE浏览器，"ActiveXObject" in window判断是否为IE11 //判断是否安装了adobe Reader for (x = 2; x < 10; x++) { try { oAcro = eval("new ActiveXObject('PDF.PdfCtrl." + x + "');"); if (oAcro) { flag = true; } } catch (e) { flag = false; } } try { oAcro4 = new ActiveXObject('PDF.PdfCtrl.1'); if (oAcro4) { flag = true; } } catch (e) { flag = false; } try { oAcro7 = new ActiveXObject('AcroPDF.PDF.1'); if (oAcro7) { flag = true; } } catch (e) { flag = false; } if (flag) { $('#pdf1').hide(); location = "PDFView.aspx"; } else { alert("对不起,您还没有安装PDF阅读器软件呢,为了方便预览PDF文档,请选择安装！"); location = "http://ardownload.adobe.com/pub/adobe/reader/win/9.x/9.3/chs/AdbeRdr930_zh_CN.exe"; } } else { //alert($.trim(urls)); var success = new PDFObject({ url: 'PDF/19-P1012728-064_ZHCN-Draft.pdf', pdfOpenParams: { scrollbars: '0', toolbar: '0', statusbar: '0'} }).embed("pdf1"); if (!success) { var opts = { $(document).width(), height: $(document).height(), autoplay: true }; } } }); </script> </head> <body> <form id="form1" runat="server"> <div id="pdf1" >对不起,您还没有安装PDF阅读器软件呢,为了方便预览PDF文档,请选择安装！ <a href="PDF/19-P1012728-064_ZHCN-Draft.pdf">PDF/19-P1012728-064_ZHCN-Draft.pdf</a> </div> </form>
PDFView.aspx.cs代码
protected void Page_Load(object sender, EventArgs e) { if (Request.Browser.Browser.ToLower() != "chrome") { string filePath = Server.MapPath("pdf/19-P1012728-064_ZHCN-Draft.pdf"); Response.ClearContent(); Response.ClearHeaders(); string FilePost = filePath.Substring(filePath.Length - 3).ToLower(); switch (FilePost) { case "pdf": Response.ContentType = "application/PDF"; break; case "doc": Response.ContentType = "application/msword"; break; case "xls": Response.ContentType = "application/vnd.ms-excel"; break; default: Session["ErrorInfo"] = "不支持的文件格式:" + FilePost; Response.Redirect("ErrorPage.aspx"); break; } Response.WriteFile(filePath); Response.Flush(); Response.Close(); Session.Remove("Report"); } else if (Request.Browser.Browser.ToLower() == "chrome") { string filePath = Server.MapPath("pdf/19-P1012728-064_ZHCN-Draft.pdf"); Response.ClearContent(); Response.ClearHeaders(); string FilePost = filePath.Substring(filePath.Length - 3).ToLower(); Response.Clear(); Response.ClearHeaders(); Response.Buffer = false; if (Request.Browser.Browser == "Firefox") System.Web.HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "1.pdf"); else System.Web.HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode("1.pdf", System.Text.Encoding.UTF8)); using (System.IO.FileStream fs = new System.IO.FileStream(filePath, System.IO.FileMode.Open)) { byte[] by = new byte[fs.Length]; fs.Read(by, 0, by.Length); Response.BinaryWrite(by); Response.AddHeader("Accept-Language", "zh-tw"); Response.ContentType = "application/octet-stream"; Response.AppendHeader("Content-Length ", by.Length.ToString()); System.Web.HttpContext.Current.Response.Flush(); System.Web.HttpContext.Current.Response.End(); } } }
