FlexPaper+SWFTool+操作类=在线预览PDF(转)

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：

 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 2 <!-- saved from url=(0014)about:internet -->

 3 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">

 4 <head>

 5     <title></title>

 6     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

 7     <style type="text/css" media="screen">

 8         html, body {

 9             height: 100%;

10         }

11

12         body {

13             margin: 0;

14             padding: 0;

15             overflow: auto;

16         }

17

18         #flashContent {

19             display: none;

20         }

21     </style>

22     <!--首先引入相关的js文件-->

23     <script type="text/javascript" src="js/swfobject/swfobject.js"></script>

24     <script type="text/javascript" src="js/flexpaper_flash.js"></script>

25     <!--配置-->

26     <script type="text/javascript">

27         <!-- For version detection, set to min. required Flash Player version, or 0 (or 0.0.0), for no version detection. -->

28         var swfVersionStr = "10.0.0";

29         <!-- To use express install, set to playerProductInstall.swf, otherwise the empty string. -->

30         var xiSwfUrlStr = "playerProductInstall.swf";

31

32         var flashvars = {

33             SwfFile: escape("Paper.swf"),

34             Scale: 0.6,

35             ZoomTransition: "easeOut",

36             ZoomTime: 0.5,

37             ZoomInterval: 0.1,

38             FitPageOnLoad: false,

39             FitWidthOnLoad: true,

40             PrintEnabled: true,

41             FullScreenAsMaxWindow: false,

42             ProgressiveLoading: true,

43             PrintToolsVisible: true,

44             ViewModeToolsVisible: true,

45             ZoomToolsVisible: true,

46             FullScreenVisible: true,

47             NavToolsVisible: true,

48             CursorToolsVisible: true,

49             SearchToolsVisible: true,

50             localeChain: "en_US"

51         };

52         var params = {

53         }

54         params.quality = "high";

55         params.bgcolor = "#ffffff";

56         params.allowscriptaccess = "sameDomain";

57         params.allowfullscreen = "true";

58         var attributes = {};

59         attributes.id = "FlexPaperViewer";

60         attributes.name = "FlexPaperViewer";

61         swfobject.embedSWF(

62             "FlexPaperViewer.swf", "flashContent",

63             "650", "500",

64             swfVersionStr, xiSwfUrlStr,

65             flashvars, params, attributes);

66         swfobject.createCSS("#flashContent", "display:block;text-align:left;");

67     </script>

68

69 </head>

70 <body>

71     <div style="position:absolute;left:10px;top:10px;">

72         <div id="flashContent">

73             <p>

74                 To view this page ensure that Adobe Flash Player version

75                 10.0.0 or greater is installed.

76             </p>

77             <script type="text/javascript">

78                 var pageHost = ((document.location.protocol == "https:") ? "https://" : "http://");

79                 document.write("<a href='http://www.adobe.com/go/getflashplayer'><img src='"

80                                 + pageHost + "www.adobe.com/images/shared/download_buttons/get_flash_player.gif' alt='Get Adobe Flash player' /></a>");

81             </script>

82         </div>

83         <div id="errNoDocument" style="padding-top:10px;">

84             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>.

85         </div>

86     </div>

87 </body>

88 </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）

 1 using System.Web;

 2 using System.Text;

 3

 4 public static class PSD2swfHelper

 5 {

 6     /// <summary>

 7     /// 转换所有的页，图片质量80%

 8     /// </summary>

 9     /// <param name="pdfPath">PDF文件地址</param>

10     /// <param name="swfPath">生成后的SWF文件地址</param>

11     public static bool PDF2SWF(string pdfPath, string swfPath)

12     {

13         return PDF2SWF(pdfPath, swfPath, 1, GetPageCount(HttpContext.Current.Server.MapPath(pdfPath)), 80);

14     }

15

16     /// <summary>

17     /// 转换前N页，图片质量80%

18     /// </summary>

19     /// <param name="pdfPath">PDF文件地址</param>

20     /// <param name="swfPath">生成后的SWF文件地址</param>

21     /// <param name="page">页数</param>

22     public static bool PDF2SWF(string pdfPath, string swfPath, int page)

23     {

24         return PDF2SWF(pdfPath, swfPath, 1, page, 80);

25     }

26

27     /// <summary>

28     /// PDF格式转为SWF

29     /// </summary>

30     /// <param name="pdfPath">PDF文件地址</param>

31     /// <param name="swfPath">生成后的SWF文件地址</param>

32     /// <param name="beginpage">转换开始页</param>

33     /// <param name="endpage">转换结束页</param>

34     private static bool PDF2SWF(string pdfPath, string swfPath, int beginpage, int endpage, int photoQuality)

35     {

36         //swftool，首先先安装，然后将安装目录下的东西拷贝到tools目录下

37         string exe = HttpContext.Current.Server.MapPath("~/Bin/tools/pdf2swf.exe");

38         pdfPath = HttpContext.Current.Server.MapPath(pdfPath);

39         swfPath = HttpContext.Current.Server.MapPath(swfPath);

40         if (!System.IO.File.Exists(exe) || !System.IO.File.Exists(pdfPath) || System.IO.File.Exists(swfPath))

41         {

42             return false;

43         }

44         StringBuilder sb = new StringBuilder();

45         sb.Append(" \"" + pdfPath + "\"");

46         sb.Append(" -o \"" + swfPath + "\"");

47         sb.Append(" -s flashversion=9");

48         if (endpage > GetPageCount(pdfPath)) endpage = GetPageCount(pdfPath);

49         sb.Append(" -p " + "\"" + beginpage + "" + "-" + endpage + "\"");

50         sb.Append(" -j " + photoQuality);

51         string Command = sb.ToString();

52         System.Diagnostics.Process p = new System.Diagnostics.Process();

53         p.StartInfo.FileName = exe;

54         p.StartInfo.Arguments = Command;

55         p.StartInfo.WorkingDirectory = HttpContext.Current.Server.MapPath("~/Bin/");

56         p.StartInfo.UseShellExecute = false;

57         p.StartInfo.RedirectStandardError = true;

58         p.StartInfo.CreateNoWindow = false;

59         p.Start();

60         p.BeginErrorReadLine();

61         p.WaitForExit();

62         p.Close();

63         p.Dispose();

64         return true;

65     }

66

67     /// <summary>

68     /// 返回页数

69     /// </summary>

70     /// <param name="pdfPath">PDF文件地址</param>

71     private static int GetPageCount(string pdfPath)

72     {

73         byte[] buffer = System.IO.File.ReadAllBytes(pdfPath);

74         int length = buffer.Length;

75         if (buffer == null)

76             return -1;

77         if (buffer.Length <= 0)

78             return -1;

79         string pdfText = Encoding.Default.GetString(buffer);

80         System.Text.RegularExpressions.Regex rx1 = new System.Text.RegularExpressions.Regex(@"/Type\s*/Page[^s]");

81         System.Text.RegularExpressions.MatchCollection matches = rx1.Matches(pdfText);

82         return matches.Count;

83     }

84 }

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

 1 using System;

 2 using System.Collections.Generic;

 3 using System.Linq;

 4 using System.Web;

 5 using System.Web.UI;

 6 using System.Web.UI.WebControls;

 7

 8 namespace Wolfy.FlexPaperDemo

 9 {

10     public partial class Test : System.Web.UI.Page

11     {

12         protected void Page_Load(object sender, EventArgs e)

13         {

14             //这里需要虚拟路径

15             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");

16         }

17     }

18 }

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：http://pan.baidu.com/s/1sjnSsyx 密码：jjbx

swftools-2013-04-09-1007下载：http://pan.baidu.com/s/1jGI8H4U

出处：http://www.cnblogs.com/wolf-sun/p/3525437.html

存在问题：

可惜pdf太大了 swftools转swf时就崩溃了

解决：

flashpaper不支持64位机，不妨试一下print2flash。

更新版本的地址：http://www.cnblogs.com/wolf-sun/p/3631381.html