在线PDF的实现纯js

最新推荐文章于 2024-05-16 17:28:48 发布

weixin_34367257

最新推荐文章于 2024-05-16 17:28:48 发布

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CC 4.0 BY-SA版权

文章标签： javascript ViewUI

原文链接：http://www.cnblogs.com/muxueyuan/p/6692040.html

/// <summary>
        /// 使用微软的TransmitFile下载文件
        /// </summary>
        /// <param name="filePath">服务器相对路径</param>
        public void TransmitFile(string Url)
        {
            try
            {
                string getFileName = Url.Substring(Url.LastIndexOf("/") + 1);

                HttpWebRequest WRequest;
                // HttpWebResponse response = null;
                Uri uri = new Uri(Url);
                CredentialCache cc = new CredentialCache();
                WRequest = (HttpWebRequest)HttpWebRequest.Create(uri);
                WRequest.Credentials = new System.Net.NetworkCredential(DocLibConst.Con_SPUserName, DocLibConst.Con_PWD, DocLibConst.Con_Domain);
                WRequest.PreAuthenticate = true;
                WRequest.Method = "GET";
                WRequest.AllowWriteStreamBuffering = false;
                WRequest.SendChunked = false;
                WRequest.KeepAlive = true;
                WRequest.ContentLength = 0;

                //WRequest.SendChunked = true;
                //WRequest.ContentLength = 100000;
                WRequest.Timeout = 30000;
                WRequest.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes("epapi:epapiadmin")));
                WebResponse wr = WRequest.GetResponse();
                Stream responseStream = wr.GetResponseStream();
                MemoryStream mem = new MemoryStream();
                //创建本地文件写入流
                //Stream stream = new FileStream("D:\\xx.docx", FileMode.Create);

                byte[] bArr = new byte[1024];
                int size = responseStream.Read(bArr, 0, (int)bArr.Length);
                while (size > 0)
                {
                    //stream.Write(bArr, 0, size);
                    mem.Write(bArr, 0, size);
                    size = responseStream.Read(bArr, 0, (int)bArr.Length);
                }
                //stream.Write(mem.ToArray(), 0, mem.ToArray().Length);
                //stream.Close();
                responseStream.Close();


                //Page.Response.ClearContent();
                //Page.Response.ClearHeaders();
                //var tem = HttpUtility.UrlEncode(getFileName, System.Text.Encoding.UTF8);
                //tem = tem.Replace("+", "%20");
                //Page.Response.AddHeader("Content-Disposition", "attachment; filename="
                //    + tem);

                //Page.Response.AddHeader("Content-Length", mem.ToArray().Length.ToString());
                //Page.Response.AddHeader("Content-Transfer-Encoding", "binary");
                //Page.Response.ContentType = "application/octet-stream";

                //Page.Response.BinaryWrite(mem.ToArray());
                //Page.Response.Flush();
                var tem= mem.ToArray();
                string result = Convert.ToBase64String(tem, 0, tem.Length);
                Page.Response.Write(result);
                Page.Response.Flush();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                HttpContext.Current.Response.Close();
            }

        }

<!DOCTYPE html>
<html dir="ltr" mozdisallowselectionprint moznomarginboxes>
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <meta name="google" content="notranslate">
    <title>在线预览</title>
    <!--<link href="preview.css" rel="stylesheet" type="text/css" />-->
    <script src="../Scripts/jquery-1.9.1.min.js" type="text/javascript"></script>

    <link rel="stylesheet" href="viewer.css" />
    <script type="text/javascript" src="compatibility.js"></script>
    <link rel="resource" type="application/l10n" href="locale/locale.properties" />
    <script type="text/javascript" src="l10n.js"></script>
    <script type="text/javascript" src="pdf.js"></script>
    <script type="text/javascript" src="debugger.js"></script>
    <script src="pdf.worker.js"></script>
    <script type="text/javascript">
        //convertDataURIToBinary()
        //不知道什么原因如果后台直接将pdf的数据流发给前台，得到的是乱码，将数据转换成 Uint8Array始终不成功
        //所以就让后台将发送之前的数据流做 了base64编码发给前台，前台再解码得到的数据就不是乱码了。
        var BASE64_MARKER = ';base64,';
        //var preFileId = {{mark}};
        //viewer.js全局变量,传入buffer，回答问题2
        var DEFAULT_URL

        $(document).ready(function(){
            $.ajax({
                type:"post",
                async: false,
                //ajax接收pdf数据流，注意dataType值的设置是否有错，如果不指定，jQuery将自动根据HTTP包MIME信息返回
                //responseXML或responseText .      回答问题1
                //contentType:"application/pdf;charset=utf-8",
                url: "http://localhost:62147/Pages/DownloadFile64Str.aspx?no=17089001&version=1&FileName=System introduction From S.C.pdf",
                data:{
                },
                success:function(data){
                    var pdfAsDataUri = data;
                    //如果引入了viewer.js , 处理方法
                    var pdfAsArray = convertDataURIToBinary(pdfAsDataUri);
                    DEFAULT_URL = pdfAsArray;
                    //  只引入了pdf.js, 未引入viewer.js， 处理方法
                    // var pdfAsArray = convertDataURIToBinary(pdfAsDataUri);
                    // PDFJS.getDocument（pdfAsArray).then();  自己写pdf的处理函数
                }
            });
        });
        function convertDataURIToBinary(dataURI) {   //编码转换，回答问题3
            //var base64Index = dataURI.indexOf(BASE64_MARKER) + BASE64_MARKER.length;
            //var base64 = dataURI.substring(base64Index);
            var raw = window.atob(dataURI);
            var rawLength = raw.length;
            //转换成pdf.js能直接解析的Uint8Array类型,见pdf.js-4068
            var array = new Uint8Array(new ArrayBuffer(rawLength));
            for(i = 0; i < rawLength; i++) {
                array[i] = raw.charCodeAt(i);
            }
            return array;
        }
    </script>
    <!--先设置全局变量DEFAULT_URL 的值，所以要后调入viewer.js -->
    <script type="text/javascript" src="viewer.js"></script>
</head>
<body onselectstart="return false" oncontextmenu="window.event.returnValue=false"  oncopy="    return false;" oncut="    return false;"  >
    <div id="outerContainer">
        <div id="sidebarContainer">
            <div id="toolbarSidebar">
                <div class="splitToolbarButton toggled">
                    <button id="viewThumbnail" class="toolbarButton group toggled" title="Show Thumbnails" tabindex="2" data-l10n-id="thumbs">
                        <span data-l10n-id="thumbs_label">Thumbnails</span>
                    </button>
                    <button id="viewOutline" class="toolbarButton group" title="Show Document Outline" tabindex="3" data-l10n-id="outline">
                        <span data-l10n-id="outline_label">Document Outline</span>
                    </button>
                    <button id="viewAttachments" class="toolbarButton group" title="Show Attachments" tabindex="4" data-l10n-id="attachments">
                        <span data-l10n-id="attachments_label">Attachments</span>
                    </button>
                </div>
            </div>
            <div id="sidebarContent">
                <div id="thumbnailView">
                </div>
                <div id="outlineView" class="hidden">
                </div>
                <div id="attachmentsView" class="hidden">
                </div>
            </div>
        </div>  <!-- sidebarContainer -->
        <div id="mainContainer">
            <div class="findbar hidden doorHanger hiddenSmallView" id="findbar">
                <label for="findInput" class="toolbarLabel" data-l10n-id="find_label">Find:</label>
                <input id="findInput" class="toolbarField" tabindex="91">
                <div class="splitToolbarButton">
                    <button class="toolbarButton findPrevious" title="" id="findPrevious" tabindex="92" data-l10n-id="find_previous">
                        <span data-l10n-id="find_previous_label">Previous</span>
                    </button>
                    <div class="splitToolbarButtonSeparator"></div>
                    <button class="toolbarButton findNext" title="" id="findNext" tabindex="93" data-l10n-id="find_next">
                        <span data-l10n-id="find_next_label">Next</span>
                    </button>
                </div>
                <input type="checkbox" id="findHighlightAll" class="toolbarField" tabindex="94">
                <label for="findHighlightAll" class="toolbarLabel" data-l10n-id="find_highlight">Highlight all</label>
                <input type="checkbox" id="findMatchCase" class="toolbarField" tabindex="95">
                <label for="findMatchCase" class="toolbarLabel" data-l10n-id="find_match_case_label">Match case</label>
                <span id="findResultsCount" class="toolbarLabel hidden"></span>
                <span id="findMsg" class="toolbarLabel"></span>
            </div>  <!-- findbar -->
            <div id="secondaryToolbar" class="secondaryToolbar hidden doorHangerRight">
                <div id="secondaryToolbarButtonContainer">
                    <button id="secondaryPresentationMode" class="secondaryToolbarButton presentationMode visibleLargeView" title="Switch to Presentation Mode" tabindex="51" data-l10n-id="presentation_mode">
                        <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
                    </button>
                    <button id="secondaryOpenFile" class="secondaryToolbarButton openFile visibleLargeView" title="Open File" tabindex="52" data-l10n-id="open_file">
                        <span data-l10n-id="open_file_label">Open</span>
                    </button>
                    <button id="secondaryPrint" class="secondaryToolbarButton print visibleMediumView" title="Print" tabindex="53" data-l10n-id="print">
                        <span data-l10n-id="print_label">Print</span>
                    </button>
                    <button id="secondaryDownload" class="secondaryToolbarButton download visibleMediumView" title="Download" tabindex="54" data-l10n-id="download">
                        <span data-l10n-id="download_label">Download</span>
                    </button>
                    <a href="#" id="secondaryViewBookmark" class="secondaryToolbarButton bookmark visibleSmallView" title="Current view (copy or open in new window)" tabindex="55" data-l10n-id="bookmark">
                        <span data-l10n-id="bookmark_label">Current View</span>
                    </a>
                    <div class="horizontalToolbarSeparator visibleLargeView"></div>
                    <button id="firstPage" class="secondaryToolbarButton firstPage" title="Go to First Page" tabindex="56" data-l10n-id="first_page">
                        <span data-l10n-id="first_page_label">Go to First Page</span>
                    </button>
                    <button id="lastPage" class="secondaryToolbarButton lastPage" title="Go to Last Page" tabindex="57" data-l10n-id="last_page">
                        <span data-l10n-id="last_page_label">Go to Last Page</span>
                    </button>
                    <div class="horizontalToolbarSeparator"></div>
                    <button id="pageRotateCw" class="secondaryToolbarButton rotateCw" title="Rotate Clockwise" tabindex="58" data-l10n-id="page_rotate_cw">
                        <span data-l10n-id="page_rotate_cw_label">Rotate Clockwise</span>
                    </button>
                    <button id="pageRotateCcw" class="secondaryToolbarButton rotateCcw" title="Rotate Counterclockwise" tabindex="59" data-l10n-id="page_rotate_ccw">
                        <span data-l10n-id="page_rotate_ccw_label">Rotate Counterclockwise</span>
                    </button>
                    <div class="horizontalToolbarSeparator"></div>
                    <button id="toggleHandTool" class="secondaryToolbarButton handTool" title="Enable hand tool" tabindex="60" data-l10n-id="hand_tool_enable">
                        <span data-l10n-id="hand_tool_enable_label">Enable hand tool</span>
                    </button>
                    <div class="horizontalToolbarSeparator"></div>
                    <button id="documentProperties" class="secondaryToolbarButton documentProperties" title="Document Properties…" tabindex="61" data-l10n-id="document_properties">
                        <span data-l10n-id="document_properties_label">Document Properties…</span>
                    </button>
                </div>
            </div>  <!-- secondaryToolbar -->
            <div class="toolbar">
                <div id="toolbarContainer">
                    <div id="toolbarViewer">
                        <div id="toolbarViewerLeft">
                            <button id="sidebarToggle" class="toolbarButton" title="Toggle Sidebar" tabindex="11" data-l10n-id="toggle_sidebar">
                                <span data-l10n-id="toggle_sidebar_label">Toggle Sidebar</span>
                            </button>
                            <div class="toolbarButtonSpacer"></div>
                            <button id="viewFind" class="toolbarButton group hiddenSmallView" title="Find in Document" tabindex="12" data-l10n-id="findbar">
                                <span data-l10n-id="findbar_label">Find</span>
                            </button>
                            <div class="splitToolbarButton">
                                <button class="toolbarButton pageUp" title="Previous Page" id="previous" tabindex="13" data-l10n-id="previous">
                                    <span data-l10n-id="previous_label">Previous</span>
                                </button>
                                <div class="splitToolbarButtonSeparator"></div>
                                <button class="toolbarButton pageDown" title="Next Page" id="next" tabindex="14" data-l10n-id="next">
                                    <span data-l10n-id="next_label">Next</span>
                                </button>
                            </div>
                            <label id="pageNumberLabel" class="toolbarLabel" for="pageNumber" data-l10n-id="page_label">Page: </label>
                            <input type="number" id="pageNumber" class="toolbarField pageNumber" value="1" size="4" min="1" tabindex="15">
                            <span id="numPages" class="toolbarLabel"></span>
                        </div>
                        <div id="toolbarViewerRight">
                            <button id="presentationMode" class="toolbarButton presentationMode hiddenLargeView" title="Switch to Presentation Mode" tabindex="31" data-l10n-id="presentation_mode">
                                <span data-l10n-id="presentation_mode_label">Presentation Mode</span>
                            </button>
                            <button id="openFile" class="toolbarButton openFile hiddenLargeView" title="Open File" tabindex="32" data-l10n-id="open_file">
                                <span data-l10n-id="open_file_label">Open</span>
                            </button>
                            <button id="print" class="toolbarButton print hiddenMediumView" title="Print" tabindex="33" data-l10n-id="print" style="display:none;">
                                <span data-l10n-id="print_label">Print</span>
                            </button>
                            <button id="download" class="toolbarButton download hiddenMediumView" title="Download" tabindex="34" data-l10n-id="download" style="display:none">
                                <span data-l10n-id="download_label">Download</span>
                            </button>
                            <a href="#" id="viewBookmark" class="toolbarButton bookmark hiddenSmallView" title="Current view (copy or open in new window)" tabindex="35" data-l10n-id="bookmark">
                                <span data-l10n-id="bookmark_label">Current View</span>
                            </a>
                            <div class="verticalToolbarSeparator hiddenSmallView"></div>
                            <button id="secondaryToolbarToggle" class="toolbarButton" title="Tools" tabindex="36" data-l10n-id="tools">
                                <span data-l10n-id="tools_label">Tools</span>
                            </button>
                        </div>
                        <div class="outerCenter">
                            <div class="innerCenter" id="toolbarViewerMiddle">
                                <div class="splitToolbarButton">
                                    <button id="zoomOut" class="toolbarButton zoomOut" title="Zoom Out" tabindex="21" data-l10n-id="zoom_out">
                                        <span data-l10n-id="zoom_out_label">Zoom Out</span>
                                    </button>
                                    <div class="splitToolbarButtonSeparator"></div>
                                    <button id="zoomIn" class="toolbarButton zoomIn" title="Zoom In" tabindex="22" data-l10n-id="zoom_in">
                                        <span data-l10n-id="zoom_in_label">Zoom In</span>
                                    </button>
                                </div>
                                <span id="scaleSelectContainer" class="dropdownToolbarButton">
                                    <select id="scaleSelect" title="Zoom" tabindex="23" data-l10n-id="zoom">
                                        <option id="pageAutoOption" title="" value="auto" selected="selected" data-l10n-id="page_scale_auto">Automatic Zoom</option>
                                        <option id="pageActualOption" title="" value="page-actual" data-l10n-id="page_scale_actual">Actual Size</option>
                                        <option id="pageFitOption" title="" value="page-fit" data-l10n-id="page_scale_fit">Fit Page</option>
                                        <option id="pageWidthOption" title="" value="page-width" data-l10n-id="page_scale_width">Full Width</option>
                                        <option id="customScaleOption" title="" value="custom" hidden="true"></option>
                                        <option title="" value="0.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 50 }'>50%</option>
                                        <option title="" value="0.75" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 75 }'>75%</option>
                                        <option title="" value="1" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 100 }'>100%</option>
                                        <option title="" value="1.25" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 125 }'>125%</option>
                                        <option title="" value="1.5" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 150 }'>150%</option>
                                        <option title="" value="2" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 200 }'>200%</option>
                                        <option title="" value="3" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 300 }'>300%</option>
                                        <option title="" value="4" data-l10n-id="page_scale_percent" data-l10n-args='{ "scale": 400 }'>400%</option>
                                    </select>
                                </span>
                            </div>
                        </div>
                    </div>
                    <div id="loadingBar">
                        <div class="progress">
                            <div class="glimmer">
                            </div>
                        </div>
                    </div>
                </div>
            </div>
            <menu type="context" id="viewerContextMenu">
                <menuitem id="contextFirstPage" label="First Page"
                          data-l10n-id="first_page"></menuitem>
                <menuitem id="contextLastPage" label="Last Page"
                          data-l10n-id="last_page"></menuitem>
                <menuitem id="contextPageRotateCw" label="Rotate Clockwise"
                          data-l10n-id="page_rotate_cw"></menuitem>
                <menuitem id="contextPageRotateCcw" label="Rotate Counter-Clockwise"
                          data-l10n-id="page_rotate_ccw"></menuitem>
            </menu>
            <div id="viewerContainer" tabindex="0">
                <div id="viewer" class="pdfViewer"></div>
            </div>
            <div id="errorWrapper" hidden='true'>
                <div id="errorMessageLeft">
                    <span id="errorMessage"></span>
                    <button id="errorShowMore" data-l10n-id="error_more_info">
                        More Information
                    </button>
                    <button id="errorShowLess" data-l10n-id="error_less_info" hidden='true'>
                        Less Information
                    </button>
                </div>
                <div id="errorMessageRight">
                    <button id="errorClose" data-l10n-id="error_close">
                        Close
                    </button>
                </div>
                <div class="clearBoth"></div>
                <textarea id="errorMoreInfo" hidden='true' readonly="readonly"></textarea>
            </div>
        </div> <!-- mainContainer -->
        <div id="overlayContainer" class="hidden">
            <div id="passwordOverlay" class="container hidden">
                <div class="dialog">
                    <div class="row">
                        <p id="passwordText" data-l10n-id="password_label">Enter the password to open this PDF file:</p>
                    </div>
                    <div class="row">
                        <!-- The type="password" attribute is set via script, to prevent warnings in Firefox for all http:// documents. -->
                        <input id="password" class="toolbarField">
                    </div>
                    <div class="buttonRow">
                        <button id="passwordCancel" class="overlayButton"><span data-l10n-id="password_cancel">Cancel</span></button>
                        <button id="passwordSubmit" class="overlayButton"><span data-l10n-id="password_ok">OK</span></button>
                    </div>
                </div>
            </div>
            <div id="documentPropertiesOverlay" class="container hidden">
                <div class="dialog">
                    <div class="row">
                        <span data-l10n-id="document_properties_file_name">File name:</span> <p id="fileNameField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_file_size">File size:</span> <p id="fileSizeField">-</p>
                    </div>
                    <div class="separator"></div>
                    <div class="row">
                        <span data-l10n-id="document_properties_title">Title:</span> <p id="titleField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_author">Author:</span> <p id="authorField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_subject">Subject:</span> <p id="subjectField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_keywords">Keywords:</span> <p id="keywordsField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_creation_date">Creation Date:</span> <p id="creationDateField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_modification_date">Modification Date:</span> <p id="modificationDateField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_creator">Creator:</span> <p id="creatorField">-</p>
                    </div>
                    <div class="separator"></div>
                    <div class="row">
                        <span data-l10n-id="document_properties_producer">PDF Producer:</span> <p id="producerField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_version">PDF Version:</span> <p id="versionField">-</p>
                    </div>
                    <div class="row">
                        <span data-l10n-id="document_properties_page_count">Page Count:</span> <p id="pageCountField">-</p>
                    </div>
                    <div class="buttonRow">
                        <button id="documentPropertiesClose" class="overlayButton"><span data-l10n-id="document_properties_close">Close</span></button>
                    </div>
                </div>
            </div>
        </div>  <!-- overlayContainer -->
    </div> <!-- outerContainer -->
    <div id="printContainer"></div>
</body>
</html>

　　pdf.js

转载于:https://www.cnblogs.com/muxueyuan/p/6692040.html