引言
由于客户有在线预览PDF格式的需求，在网上找了一下解决方案，觉得FlexPaper用起来还是挺方便的，flexpaper是将pdf转换为swf格式的文件预览的，所以flexpaper一般和swftool配合使用，在程序运行时将pdf文件转换为swf格式的文件。
如果flexpaper不满足你的要求，也可以对其进行二次开发，这里推荐两篇文章，希望对您有所帮助：
http://www.cnblogs.com/xcong/archive/2013/06/20/3142155.html
http://www.cnblogs.com/zamlove/archive/2013/05/07/3065079.html
如何使用flexpaper
测试demo项目结构如图
使用的页面代码：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!-- saved from url=(0014)about:internet -->
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css" media="screen">
html, body {
height: 100%;
} body {
margin: 0;
padding: 0;
overflow: auto;
} #flashContent {
display: none;
}
</style>
<!--首先引入相关的js文件-->
<script type="text/javascript" src="js/swfobject/swfobject.js"></script>
<script type="text/javascript" src="js/flexpaper_flash.js"></script>
<!--配置-->
<script type="text/javascript">
<!-- For version detection, set to min. required Flash Player version, or 0 (or 0.0.0), for no version detection. -->
var swfVersionStr = "10.0.0";
<!-- To use express install, set to playerProductInstall.swf, otherwise the empty string. -->
var xiSwfUrlStr = "playerProductInstall.swf"; var flashvars = {
SwfFile: escape("Paper.swf"),
Scale: 0.6,
ZoomTransition: "easeOut",
ZoomTime: 0.5,
ZoomInterval: 0.1,
FitPageOnLoad: false,
FitWidthOnLoad: true,
PrintEnabled: true,
FullScreenAsMaxWindow: false,
ProgressiveLoading: true,
PrintToolsVisible: true,
ViewModeToolsVisible: true,
ZoomToolsVisible: true,
FullScreenVisible: true,
NavToolsVisible: true,
CursorToolsVisible: true,
SearchToolsVisible: true,
localeChain: "en_US"
};
var params = {
}
params.quality = "high";
params.bgcolor = "#ffffff";
params.allowscriptaccess = "sameDomain";
params.allowfullscreen = "true";
var attributes = {};
attributes.id = "FlexPaperViewer";
attributes.name = "FlexPaperViewer";
swfobject.embedSWF(
"FlexPaperViewer.swf", "flashContent",
"650", "500",
swfVersionStr, xiSwfUrlStr,
flashvars, params, attributes);
swfobject.createCSS("#flashContent", "display:block;text-align:left;");
</script> </head>
<body>
<div style="position:absolute;left:10px;top:10px;">
<div id="flashContent">
<p>
To view this page ensure that Adobe Flash Player version
10.0.0 or greater is installed.
</p>
<script type="text/javascript">
var pageHost = ((document.location.protocol == "https:") ? "https://" : "http://");
document.write("<a href='http://www.adobe.com/go/getflashplayer'><img src='"
+ pageHost + "www.adobe.com/images/shared/download_buttons/get_flash_player.gif' alt='Get Adobe Flash player' /></a>");
</script>
</div>
<div id="errNoDocument" style="padding-top:10px;">
Can't see the document? Running FlexPaper from your local directory? Make sure you have added FlexPaper as trusted. You can do that at <a href="http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_manager04a.html#119065">Adobe's website</a>.
</div>
</div>
</body>
</html>
效果图
上面的工具栏：打印，全屏等功能可配置。
swftool工具
操作类（本类来自常用类库，从网上下载的，一搜一大把）
using System.Web;
using System.Text; public static class PSD2swfHelper
{
/// <summary>
/// 转换所有的页，图片质量80%
/// </summary>
/// <param name="pdfPath">PDF文件地址</param>
/// <param name="swfPath">生成后的SWF文件地址</param>
public static bool PDF2SWF(string pdfPath, string swfPath)
{
return PDF2SWF(pdfPath, swfPath, , GetPageCount(HttpContext.Current.Server.MapPath(pdfPath)), );
} /// <summary>
/// 转换前N页，图片质量80%
/// </summary>
/// <param name="pdfPath">PDF文件地址</param>
/// <param name="swfPath">生成后的SWF文件地址</param>
/// <param name="page">页数</param>
public static bool PDF2SWF(string pdfPath, string swfPath, int page)
{
return PDF2SWF(pdfPath, swfPath, , page, );
} /// <summary>
/// PDF格式转为SWF
/// </summary>
/// <param name="pdfPath">PDF文件地址</param>
/// <param name="swfPath">生成后的SWF文件地址</param>
/// <param name="beginpage">转换开始页</param>
/// <param name="endpage">转换结束页</param>
private static bool PDF2SWF(string pdfPath, string swfPath, int beginpage, int endpage, int photoQuality)
{
//swftool，首先先安装，然后将安装目录下的东西拷贝到tools目录下
string exe = HttpContext.Current.Server.MapPath("~/Bin/tools/pdf2swf.exe");
pdfPath = HttpContext.Current.Server.MapPath(pdfPath);
swfPath = HttpContext.Current.Server.MapPath(swfPath);
if (!System.IO.File.Exists(exe) || !System.IO.File.Exists(pdfPath) || System.IO.File.Exists(swfPath))
{
return false;
}
StringBuilder sb = new StringBuilder();
sb.Append(" \"" + pdfPath + "\"");
sb.Append(" -o \"" + swfPath + "\"");
sb.Append(" -s flashversion=9");
if (endpage > GetPageCount(pdfPath)) endpage = GetPageCount(pdfPath);
sb.Append(" -p " + "\"" + beginpage + "" + "-" + endpage + "\"");
sb.Append(" -j " + photoQuality);
string Command = sb.ToString();
System.Diagnostics.Process p = new System.Diagnostics.Process();
p.StartInfo.FileName = exe;
p.StartInfo.Arguments = Command;
p.StartInfo.WorkingDirectory = HttpContext.Current.Server.MapPath("~/Bin/");
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardError = true;
p.StartInfo.CreateNoWindow = false;
p.Start();
p.BeginErrorReadLine();
p.WaitForExit();
p.Close();
p.Dispose();
return true;
} /// <summary>
/// 返回页数
/// </summary>
/// <param name="pdfPath">PDF文件地址</param>
private static int GetPageCount(string pdfPath)
{
byte[] buffer = System.IO.File.ReadAllBytes(pdfPath);
int length = buffer.Length;
if (buffer == null)
return -;
if (buffer.Length <= )
return -;
string pdfText = Encoding.Default.GetString(buffer);
System.Text.RegularExpressions.Regex rx1 = new System.Text.RegularExpressions.Regex(@"/Type\s*/Page[^s]");
System.Text.RegularExpressions.MatchCollection matches = rx1.Matches(pdfText);
return matches.Count;
}
}
然后安装swftool工具，将安装后的目录中的文件拷贝到tools目录下，如图
test.asp.cs代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls; namespace Wolfy.FlexPaperDemo
{
public partial class Test : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//这里需要虚拟路径
PSD2swfHelper.PDF2SWF("PDFFile/王牌2_C#_控件查询手册.pdf", "SWFFile/王牌2_C#_控件查询手册.swf");
}
}
}
结果
如何禁用右键中的打印，复制功能
如果pdf保密性强，不让别人复制，打印等该如何？在上面推荐的两篇文章中，他们对其进行了二次开发，禁用了这个功能。非常感谢，那么之后只需将FlexPaperViewer.swf替换就可以了。
原图
替换后的
说保密只是相对的，在互联网上，只要能看，别人想盗取还是很容易的事，大不了，一张一张的截图。
总结
互联网，没有绝对安全的，想安全就别放在互联网上显摆，只要想要，总会有办法的。有时候客户的需求真他妈的让人蛋疼。
demo下载：链接：链接：http://pan.baidu.com/s/1hqEpx5a 密码：gupg
swftools-2013-04-09-1007下载：链接：http://pan.baidu.com/s/1c0CvBDA 密码：v38r