相仿百度文库源码

类似百度文库源码

这段时间想弄一个类似于百度文库的程序，网上查了比较多的资料都没有合适，没办法只能自己动手，现把自己整理的与大家分享，希望能对大家能有帮助[实例下载，在文章最后]

1.下载必备工具

     1>下载swftools[http://www.swftools.org/swftools-2013-04-09-1007.exe]安装

     2>下载flexpager[https://flexpaper.googlecode.com/files/FlexPaper_2.1.5.zip]

2.创建MVC应用程序，在Scripts下新建"flexpager"文件夹,并将解压flexpager_2.1.5.zip文件夹中的"flexpaper.css","flexpaper.js","flexpaper_handlers.js","flexpaper_handlers_debug.js","FlexPaperViewer.swf"复制到刚创建的flexpager下，如下图：

然后打开flexpager.js，搜索window[instance] = flashembed，将下面的Src修改为_jsDirectory+"FlexPaperViewer.swf"，expressInstall修改为：/Scripts/flexpager/expressinstall.swf，

修改web.config添加appSettings

    <add key="SwfFilePath" value="D:\UploadFiles\Swf\" />    <add key="PdfFilePath" value="D:\UploadFiles\Pdf\" />    <add key="ExtractText" value=""C:\Program Files\SWFTools\swfstrings.exe" "{path.swf}{swffile}"" />    <add key="SplitPages" value=""C:\Program Files\SWFTools\pdf2swf.exe" "{path.pdf}{pdffile}" -o "{path.swf}{pdffile}%.swf" -f -T 9 -t -s storeallcharacters -s linknameurl" />    <add key="SingleDoc" value=""C:\Program Files\SWFTools\pdf2swf.exe" "{path.pdf}{pdffile}" -o "{path.swf}{pdffile}.swf" -f -T 9 -t -s storeallcharacters -s linknameurl" />    <add key="AllowCache" value="1"/>  

SwfFilePath转换后的Swf文件存放位置，pdfFilePath上传PDF文件位置,ExtractText查找命令,splitpages生成swf命令,allowCache是否缓存

3.创建类库SwfConvert，将创建三个类，分别为：PdfCommon.cs,PdfToSwf.cs,SwfExtract.cs，如下图所示：

PdfCommon.cs[计算PDF页大小和设置缓存]：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;using System.Text.RegularExpressions;using System.Web;namespace SwfConvert{    public static class PdfCommon    {        public static Boolean validPdfParams(String pdfFilePath, String doc, String page)        {            return doc != null && !(doc.Length > 255 || page != null && page.Length > 255);        }        public static Boolean validSwfParams(String swfFilePath, String doc, String page)        {            return doc != null && !(doc.Length > 255 || page != null && page.Length > 255);        }        public static int getTotalPages(string fileName)        {            using (StreamReader sr = new StreamReader(File.OpenRead(fileName)))            {                Regex regex = new Regex(@"/Type\s*/Page[^s]");                MatchCollection matches = regex.Matches(sr.ReadToEnd());                return matches.Count;            }        }        public static void setCacheHeaders(HttpContext context)        {            context.Response.AddHeader("Cache-Control", "private, max-age=10800, pre-check=10800");            context.Response.AddHeader("Pragma", "private");            context.Response.Cache.SetExpires(DateTime.Now.AddDays(2));        }    }}

PdfToSwf.cs[PDF转Swf类]：

using System;using System.Web;using System.Configuration;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;namespace SwfConvert{    public class PdfToSwf    {        public String ConvertToSwf(string doc, String page)        {            try            {                String output = "";                String pdfFilePath = ConfigurationManager.AppSettings["PdfFilePath"].ToString() + doc;                String swfFilePath = ConfigurationManager.AppSettings["SwfFilePath"].ToString() + doc + page + ".swf";                String command = "";                if (page != null && page.Length > 0)                    command = ConfigurationManager.AppSettings["SplitPages"].ToString();                else                    command = ConfigurationManager.AppSettings["SingleDoc"].ToString();                command = command.Replace("{path.pdf}", ConfigurationManager.AppSettings["PdfFilePath"].ToString());                command = command.Replace("{path.swf}", ConfigurationManager.AppSettings["SwfFilePath"].ToString());                command = command.Replace("{pdffile}", doc);                try                {                    if (!this.isNotConverted(pdfFilePath, swfFilePath))                    {                        return "[Converted]";                    }                }                catch (Exception ex)                {                    return "[" + ex.Message + "]";                }                int return_var = 0;                String pagecommand = "";                if (page != null && page.Length > 0)                {                    pagecommand = command.Replace("%", page);                    pagecommand += " -p " + page;                }                System.Diagnostics.Process proc = new System.Diagnostics.Process();                proc.StartInfo.FileName = command.Substring(0, command.IndexOf(".exe") + 5);                command = command.Substring(command.IndexOf(".exe") + 5);                if (page != null && page.Length > 0)                    proc.StartInfo.Arguments = pagecommand.Substring(pagecommand.IndexOf(".exe") + 5);                else                    proc.StartInfo.Arguments = command;                proc.StartInfo.UseShellExecute = false;                proc.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;                proc.StartInfo.CreateNoWindow = true;                proc.StartInfo.RedirectStandardOutput = true;                if (proc.Start())                {                    output = proc.StandardOutput.ReadToEnd();                    proc.WaitForExit();                    proc.Close();                    return_var = 0;                    if (page != null && page.Length > 0)                    {                        System.Diagnostics.Process proc2 = new System.Diagnostics.Process();                        proc2.StartInfo.FileName = proc.StartInfo.FileName;                        proc2.StartInfo.Arguments = command;                        proc2.StartInfo.UseShellExecute = true;                        proc2.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;                        proc2.StartInfo.CreateNoWindow = true;                        proc2.Start();                    }                }                else                    return_var = -1;                if (return_var == 0)                    return "[Converted]";                else                    return "Error converting document, make sure the conversion tool is installed and that correct user permissions are applied to the SWF Path directory";            }            catch (Exception ex)            {                throw ex;            }            return "";        }        public Boolean isNotConverted(String pdfFilePath, String swfFilePath)        {            if (!File.Exists(pdfFilePath))                throw new Exception("Document does not exist");            if (swfFilePath == null)                throw new Exception("Document output file name not set");            else            {                if (!File.Exists(swfFilePath))                    return true;                else                    if (new System.IO.FileInfo(pdfFilePath).LastWriteTime > new System.IO.FileInfo(swfFilePath).LastWriteTime)                        return true;            }            return false;        }    }}

SwfExtract.cs[PDF内容查找类]:

using System;using System.Configuration;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;namespace SwfConvert{    public class SwfExtract    {        public String FindText(String doc, String page, String searchterm, int numPages = -1)        {            try            {                String output = "";                String swfFilePath = ConfigurationManager.AppSettings["SwfFilePath"].ToString() + doc + page + ".swf";                String command = ConfigurationManager.AppSettings["ExtractText"].ToString() ;                int pagecount = -1;                if (numPages == -1)                {                    pagecount = Directory.GetFiles(ConfigurationManager.AppSettings["SwfFilePath"].ToString(), doc + "*").Count();                }                else                {                    pagecount = numPages;                }                if (!PdfCommon.validSwfParams(swfFilePath, doc, page))                    return "[Invalid Parameters]";                command = command.Replace("{path.swf}", ConfigurationManager.AppSettings["SwfFilePath"].ToString());                command = command.Replace("{swffile}", doc + page + ".swf");                System.Diagnostics.Process proc = new System.Diagnostics.Process();                proc.StartInfo.FileName = command.Substring(0, command.IndexOf(".exe") + 5);                proc.StartInfo.UseShellExecute = false;                proc.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;                proc.StartInfo.CreateNoWindow = true;                proc.StartInfo.RedirectStandardOutput = true;                proc.StartInfo.Arguments = command.Substring(command.IndexOf(".exe") + 5);                if (proc.Start())                {                    output = proc.StandardOutput.ReadToEnd();                    int strpos = output.ToLower().IndexOf(searchterm.ToLower());                    if (strpos > 0)                    {                        return "[{\"page\":" + page + ", \"position\":" + strpos + "}]";                    }                    else                    {                        int npage = Convert.ToInt32(page);                        if (npage < pagecount)                        {                            return this.FindText(doc, (npage + 1).ToString(), searchterm, pagecount);                        }                        else                        {                            return "[{\"page\":-1, \"position\":-1}]";                        }                    }                }                else                    return "[Error Extracting]";            }            catch (Exception ex)            {                return "[Error Extracting]";            }        }    }}

4.MVC应用程序引用SwfConvert类库，创建ReadPdfController,创建视图FileListWin.cshtml,如下图所示：

ReadPdfController.cs代码：

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using System.Configuration;using SwfConvert;using System.Data;using System.IO;namespace MvcReadPdfApp.Controllers{    public class ReadPdfController : Controller    {        //        // GET: /ReadPdf/        public ActionResult Index(string doc)        {            ViewBag.PdfFilePath = ConfigurationManager.AppSettings["PdfFilePath"].ToString() + doc;            ViewBag.SwfFilePath = ConfigurationManager.AppSettings["SwfFilePath"].ToString();            ViewBag.Numbers = PdfCommon.getTotalPages(ViewBag.PdfFilePath);            ViewBag.Doc = doc;            return View();        }        /// <summary>        /// 文件列表        /// </summary>        /// <returns></returns>        public ActionResult FileListWin()        {            ViewBag.FileList = FindFileList();            return View();        }        /// <summary>        /// 上传文件        /// </summary>        /// <param name="file"></param>        /// <returns></returns>        [HttpPost]        public ActionResult UploadFile(HttpPostedFileBase file)        {            var pdfFilePath = ConfigurationManager.AppSettings["PdfFilePath"].ToString() + Path.GetFileName(file.FileName);            file.SaveAs(pdfFilePath);            ViewBag.FileList = FindFileList();            return View("~/Views/ReadPdf/FileListWin.cshtml");        }        private IList<string> FindFileList()        {            var list = new List<string>();            var pdfFilePath = ConfigurationManager.AppSettings["PdfFilePath"].ToString();            DirectoryInfo dir = new DirectoryInfo(pdfFilePath);            foreach (FileInfo f in dir.GetFiles())            {                var dict = new Dictionary<string, string>();                if (Path.GetExtension(f.Name).ToLower() == ".pdf")                {                    list.Add(f.Name);                }            }            return list;        }    }}

FileListWin.cshtml代码：

@{    Layout = null;}<!DOCTYPE html><html><head>    <meta name="viewport" content="width=device-width" />    <title>FileListWin</title>    <style type="text/css">        ul { margin:0px;padding:0px;}    </style></head><body style="padding:50px;">    <div>        @using (Html.BeginForm("UploadFile", "ReadPdf", FormMethod.Post, new { enctype = "multipart/form-data" }))        {            <span>选择上传文件：</span><input name="file" type="file" id="file" />            <span><input type="submit" name="Upload" value="Upload" /></span>        }    </div>    <div>        <ul>            @foreach (var f in (ViewBag.FileList as List<string>))            {                <li><a href="@Url.Action("Index","ReadPdf")?doc=@f" target="_blank">@f</a></li>                }                    </ul>    </div></body></html>

Index.cshtml代码：

@{    Layout = null;}<!DOCTYPE html><html><head>    <meta name="viewport" content="width=device-width" />    <title>Index</title>    <link type="text/css" rel="Stylesheet" href="@Url.Content("~/Scripts/flexpager/flexpaper.css")" />    <script type="text/javascript" src="@Url.Content("~/Scripts/jquery.min.js")"></script>    <script type="text/javascript" src="@Url.Content("~/Scripts/flexpager/flexpaper.js")"></script>    <script type="text/javascript" src="@Url.Content("~/Scripts/flexpager/flexpaper_handlers.js")"></script>    <script type="text/javascript">        var numPages = "@ViewBag.Numbers";        var doc = '@ViewBag.Doc';        var swfFileUrl = escape('{@Url.Action("View.ashx","PdfServices")?doc=' + doc + '&page=[*,0],' + numPages + '}');        var searchServiceUrl = escape('@Url.Action("Containstext.ashx","PdfServices")?doc=' + doc + '&page=&searchterm=[searchterm]');        function getDocumentUrl(document) {            var url = "{@Url.Action("View.ashx","PdfServices")?doc={doc}&format={format}&page=[*,0],{numPages}}";            url = url.replace("{doc}", document);            url = url.replace("{numPages}", numPages);            return url;                    }        $(function () {            $("#documentViewer").css("height", $(window).height());            $('#documentViewer').FlexPaperViewer(              {                  config: {                      DOC: escape(getDocumentUrl("@ViewBag.Doc")),                      Scale: 0.6,                      ZoomTransition: 'easeOut',                      ZoomTime: 0.5,                      ZoomInterval: 0.2,                      FitPageOnLoad: true,                      FitWidthOnLoad: false,                      FullScreenAsMaxWindow: false,                      ProgressiveLoading: false,                      MinZoomSize: 0.2,                      MaxZoomSize: 5,                      SearchMatchAll: false,                      SearchServiceUrl: searchServiceUrl,                      InitViewMode: 'Portrait',                      ViewModeToolsVisible: true,                      ZoomToolsVisible: true,                      NavToolsVisible: true,                      CursorToolsVisible: true,                      SearchToolsVisible: true,                      cssDirectory: '@Url.Content("~/Scripts/flexpager/")',                      jsDirectory: '@Url.Content("~/Scripts/flexpager/")',                      JSONDataType: 'jsonp',                      localeChain: 'zh_CN'                  }              }        );        });    </script>    <style type="text/css">        body {margin:0px; padding:0px;}        #documentViewer {width:800px; margin:0 auto;}    </style></head><body>    <div id="documentViewer" class="flexpaper_viewer"></div></body></html>

5.更改路由：MVC4修改App_Start/RouteConfig.cs,MVC3修改Global.asax,修改如下

            routes.MapRoute(                name: "Default",                url: "{controller}/{action}/{id}",                defaults: new { controller = "ReadPdf", action = "FileListWin", id = UrlParameter.Optional },                namespaces: new[] { "MvcReadPdfApp.Controllers" }            );

实例代码，请点击这里

下面大家可以运行一下，看一下效果了：