最近从Silverlight这边转到javascript过来,现在要导出一个导出excel的功能。上级领导指示当页显示多少数据,就导出多少数据,没有必要从后台在去数据。以前也没有接触过这方面的,在网上一整狂查资料,最终决定采用excel2003xml+flash插件实现改功能。

获取excel2003xml格式

在桌面新建一个excel文件,另存为2003xml格式,用Vs2012打开该文件,就能清晰的明白数据保存方式。

javascript构造xml数据

了解数据结构后,我们已经知道了excel中的数据存储在节点Worksheet下的Table中,ExpandedColumnCount属性说明该Execl文件中有多少列,ExpandedRowCount说明有多少行数据。Row节点下ss:Index说明改行数据是从第几行开始。Cell节点属性ss:Index说明数据是在第几列,ss:MergeDown是从本单元格像下合并多少单元格,ss:MergeAcross从本单元格开始向左合并多少个单元格,数据格式如下:

表格中的数据个列都会有列头信息,我采用列头和数据分离,都采用一个二维数组, dataOpts.HeadInfo格式:

[[
{ field: 'F_UserID', title: '公告ID', width: 100, hidden: true, rowspan: 3 },
{ field: 'F_RealName', title: '姓名', width: 100, rowspan: 3 },
{ field: 'F_LoginName', title: '登录名', width: 100, rowspan: 3 },
{ field: 'F_Password', title: '密码', width: 100, rowspan: 3 },
{ title: '多表头', colspan: 5 }
], [
{ field: 'F_UserNick', title: '昵称', width: 100,rowspan:2},
{ field: 'F_IdNumber', title: '身份证号', width: 100,rowspan:2 },
{ title: '多表3', colspan: 3}
], [
{ field: 'F_Tel', title: '电话', width: 100},
{ field: 'F_BirthDate', title: '生日', width: 100 },
{ field: 'F_EMail', title: '邮箱', width: 100 },
]

  filed用于判断是否是合并列,其中rowspan对应MergeDown,clospan对应MergeAcross,构建表头代码如下:

  for (var i = 0; i < dataOpts.HeadInfo.length; i++) {
var rowindex = dataOpts.RowStart + i;
headerXml += '<Row ss:Index="' + rowindex + '" ss:AutoFitHeight="0">';
for (var cell = 0; cell < dataOpts.HeadInfo[i].length; cell++) {
var curcell = dataOpts.HeadInfo[i][cell];
if (curcell.hidden)
continue;
var cellindex = dataOpts.ColumStart + cloumIndex;
var MergeDown = curcell.rowspan ? curcell.rowspan - 1 : 0;
var MergeAcross = curcell.colspan ? curcell.colspan - 1 : 0;
if (curcell.field) {
cloumIndex = cloumIndex + 1;
ExpandedColumnCount = ExpandedColumnCount + 1;
}
headerXml += '<Cell ss:StyleID="TableHeadStyle" ss:Index="' + cellindex +
(MergeDown === 0 ? '' : '" ss:MergeDown="' + MergeDown) +
(MergeAcross === 0 ? '' : '" ss:MergeAcross="' + MergeAcross) +
'"><Data ss:Type="String">' + curcell.title + '</Data></Cell>';
}
headerXml += '</Row>';
ExpandedRowCount = ExpandedRowCount + 1;
}

  同理,构建数据就显得简单些了,不会存在合并问题,数据行是从表头后开始绘制的,在Row节点中可不用设置ss:index的值,主要代码如下:

  //创建数据
for (var i = 0; i < dataOpts.RowInfo.length; i++) {
rowxml += '<Row ss:AutoFitHeight="0">';
for (var j = 0; j < dataOpts.RowInfo[i].length; j++) {
var value = dataOpts.RowInfo[i][j];
rowxml += '<Cell ss:StyleID="TableHeadStyle" ' +
(j === 0 ? 'ss:Index="' + dataOpts.ColumStart + '"' : ' ') +
' ><Data ss:Type="String">' + value + '</Data></Cell>'
}
rowxml += '</Row> ';
ExpandedRowCount = ExpandedRowCount + 1;
}

  改功能主要是针对easyui中datagrid开发,单生成在处理行数据时需要特别处理转换成二维数组,调用方式

onLoadSuccess: function (data) {
setTimeout(function () {
ZeroClipboard_TableTools.setMoviePath('@Url.Content("~/Scripts/media/copy_csv_xls_pdf.swf")');
var flash = new ZeroClipboard_TableTools.Client("exportExcel");
flash.setHandCursor(true);
data = [];
var dataarray = grid.datagrid("getRows");
for (var i = 0; i < dataarray.length; i++) {
data[i] = [];
cols = grid.datagrid("getColumnFields");
var mins = 0;
for (var j = 0; j < cols.length; j++) {
var colname = cols[j];
var filed = grid.datagrid("getColumnOption", colname);
if (filed.hidden) {
mins += 1;
continue
}
data[i][j - mins] = dataarray[i][colname];
}
}
flash.setText(JSXmlExcel.BulidXml({ HeadInfo: grid.datagrid("options").columns, RowInfo: data, RowStart: 2, ColumStart: 2, SheetName: 'Test' }));
flash.setAction('save');
flash.setCharSet('UTF8');
flash.setFileName("excel.xls");
}, 100);
}
});

ZeroClipboard.js

 // Simple Set Clipboard System
// Author: Joseph Huckaby var ZeroClipboard_TableTools = { version: "1.0.4-TableTools2",
clients: {}, // registered upload clients on page, indexed by id
moviePath: '', // URL to movie
nextId: 1, // ID of next movie $: function (thingy) {
// simple DOM lookup utility function
if (typeof (thingy) == 'string') thingy = document.getElementById(thingy);
if (!thingy.addClass) {
// extend element with a few useful methods
thingy.hide = function () { this.style.display = 'none'; };
thingy.show = function () { this.style.display = ''; };
thingy.addClass = function (name) { this.removeClass(name); this.className += ' ' + name; };
thingy.removeClass = function (name) {
this.className = this.className.replace(new RegExp("\\s*" + name + "\\s*"), " ").replace(/^\s+/, '').replace(/\s+$/, '');
};
thingy.hasClass = function (name) {
return !!this.className.match(new RegExp("\\s*" + name + "\\s*"));
}
}
return thingy;
}, setMoviePath: function (path) {
// set path to ZeroClipboard.swf
this.moviePath = path;
}, dispatch: function (id, eventName, args) {
// receive event from flash movie, send to client
var client = this.clients[id];
if (client) {
client.receiveEvent(eventName, args);
}
}, register: function (id, client) {
// register new client to receive events
this.clients[id] = client;
}, getDOMObjectPosition: function (obj) {
// get absolute coordinates for dom element
debugger;
var info = {
left: 0,
top: 0,
width: obj.width ? obj.width : obj.offsetWidth,
height: obj.height ? obj.height : obj.offsetHeight
}; if (obj.style.width != "")
info.width = obj.style.width.replace("px", ""); if (obj.style.height != "")
info.height = obj.style.height.replace("px", ""); while (obj) {
info.left += obj.offsetLeft;
info.top += obj.offsetTop;
obj = obj.offsetParent;
} return info;
}, Client: function (elem) {
// constructor for new simple upload client
this.handlers = {}; // unique ID
this.id = ZeroClipboard_TableTools.nextId++;
this.movieId = 'ZeroClipboard_TableToolsMovie_' + this.id; // register client with singleton to receive flash events
ZeroClipboard_TableTools.register(this.id, this); // create movie
if (elem) this.glue(elem);
}
}; ZeroClipboard_TableTools.Client.prototype = { id: 0, // unique ID for us
ready: false, // whether movie is ready to receive events or not
movie: null, // reference to movie object
clipText: '', // text to copy to clipboard
fileName: '', // default file save name
action: 'copy', // action to perform
handCursorEnabled: true, // whether to show hand cursor, or default pointer cursor
cssEffects: true, // enable CSS mouse effects on dom container
handlers: null, // user event handlers
sized: false, glue: function (elem, title) {
// glue to DOM element
// elem can be ID or actual DOM element object
this.domElement = ZeroClipboard_TableTools.$(elem); // float just above object, or zIndex 99 if dom element isn't set
var zIndex = 99;
if (this.domElement.style.zIndex) {
zIndex = parseInt(this.domElement.style.zIndex) + 1;
}
debugger;
// find X/Y position of domElement
var box = ZeroClipboard_TableTools.getDOMObjectPosition(this.domElement); // create floating DIV above element
this.div = document.createElement('div');
var style = this.div.style;
style.position = 'absolute';
style.left ='0px';
style.top = '0px';
style.width = (box.width) + 'px';
style.height = (box.height) + 'px';
style.zIndex = zIndex; if (typeof title != "undefined" && title != "") {
this.div.title = title;
}
if (box.width != 0 && box.height != 0) {
this.sized = true;
} style.backgroundColor = '#f00'; // debug
if (this.domElement) {
this.domElement.appendChild(this.div);
this.div.innerHTML = this.getHTML(box.width, box.height);
}
}, positionElement: function () {
var box = ZeroClipboard_TableTools.getDOMObjectPosition(this.domElement);
var style = this.div.style; style.position = 'absolute';
//style.left = (this.domElement.offsetLeft)+'px';
//style.top = this.domElement.offsetTop+'px';
style.width = box.width + 'px';
style.height = box.height + 'px'; if (box.width != 0 && box.height != 0) {
this.sized = true;
} else {
return;
} var flash = this.div.childNodes[0];
flash.width = box.width;
flash.height = box.height;
}, getHTML: function (width, height) {
// return HTML for movie
var html = '';
var flashvars = 'id=' + this.id +
'&width=' + width +
'&height=' + height; if (navigator.userAgent.match(/MSIE/)) {
// IE gets an OBJECT tag
var protocol = location.href.match(/^https/i) ? 'https://' : 'http://';
html += '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="' + protocol + 'download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=10,0,0,0" width="' + width + '" height="' + height + '" id="' + this.movieId + '" align="middle"><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="' + ZeroClipboard_TableTools.moviePath + '" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="' + flashvars + '"/><param name="wmode" value="transparent"/></object>';
}
else {
// all other browsers get an EMBED tag
html += '<embed id="' + this.movieId + '" src="' + ZeroClipboard_TableTools.moviePath + '" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="' + width + '" height="' + height + '" name="' + this.movieId + '" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="' + flashvars + '" wmode="transparent" />';
}
return html;
}, hide: function () {
// temporarily hide floater offscreen
if (this.div) {
this.div.style.left = '-2000px';
}
}, show: function () {
// show ourselves after a call to hide()
this.reposition();
}, destroy: function () {
// destroy control and floater
if (this.domElement && this.div) {
this.hide();
this.div.innerHTML = ''; var body = document.getElementsByTagName('body')[0];
try { body.removeChild(this.div); } catch (e) {; } this.domElement = null;
this.div = null;
}
}, reposition: function (elem) {
// reposition our floating div, optionally to new container
// warning: container CANNOT change size, only position
if (elem) {
this.domElement = ZeroClipboard_TableTools.$(elem);
if (!this.domElement) this.hide();
} if (this.domElement && this.div) {
var box = ZeroClipboard_TableTools.getDOMObjectPosition(this.domElement);
var style = this.div.style;
style.left = '' + box.left + 'px';
style.top = '' + box.top + 'px';
}
}, clearText: function () {
// clear the text to be copy / saved
this.clipText = '';
if (this.ready) this.movie.clearText();
}, appendText: function (newText) {
// append text to that which is to be copied / saved
this.clipText += newText;
if (this.ready) { this.movie.appendText(newText); }
}, setText: function (newText) {
// set text to be copied to be copied / saved
this.clipText = newText;
if (this.ready) { this.movie.setText(newText); }
}, setCharSet: function (charSet) {
// set the character set (UTF16LE or UTF8)
this.charSet = charSet;
if (this.ready) { this.movie.setCharSet(charSet); }
}, setBomInc: function (bomInc) {
// set if the BOM should be included or not
this.incBom = bomInc;
if (this.ready) { this.movie.setBomInc(bomInc); }
}, setFileName: function (newText) {
// set the file name
this.fileName = newText;
if (this.ready) this.movie.setFileName(newText);
}, setAction: function (newText) {
// set action (save or copy)
this.action = newText;
if (this.ready) this.movie.setAction(newText);
}, addEventListener: function (eventName, func) {
// add user event listener for event
// event types: load, queueStart, fileStart, fileComplete, queueComplete, progress, error, cancel
eventName = eventName.toString().toLowerCase().replace(/^on/, '');
if (!this.handlers[eventName]) this.handlers[eventName] = [];
this.handlers[eventName].push(func);
}, setHandCursor: function (enabled) {
// enable hand cursor (true), or default arrow cursor (false)
this.handCursorEnabled = enabled;
if (this.ready) this.movie.setHandCursor(enabled);
}, setCSSEffects: function (enabled) {
// enable or disable CSS effects on DOM container
this.cssEffects = !!enabled;
}, receiveEvent: function (eventName, args) {
// receive event from flash
eventName = eventName.toString().toLowerCase().replace(/^on/, ''); // special behavior for certain events
switch (eventName) {
case 'load':
// movie claims it is ready, but in IE this isn't always the case...
// bug fix: Cannot extend EMBED DOM elements in Firefox, must use traditional function
this.movie = document.getElementById(this.movieId);
if (!this.movie) {
var self = this;
setTimeout(function () { self.receiveEvent('load', null); }, 1);
return;
} // firefox on pc needs a "kick" in order to set these in certain cases
if (!this.ready && navigator.userAgent.match(/Firefox/) && navigator.userAgent.match(/Windows/)) {
var self = this;
setTimeout(function () { self.receiveEvent('load', null); }, 100);
this.ready = true;
return;
} this.ready = true;
this.movie.clearText();
this.movie.appendText(this.clipText);
this.movie.setFileName(this.fileName);
this.movie.setAction(this.action);
this.movie.setCharSet(this.charSet);
this.movie.setBomInc(this.incBom);
this.movie.setHandCursor(this.handCursorEnabled);
break; case 'mouseover':
if (this.domElement && this.cssEffects) {
//this.domElement.addClass('hover');
if (this.recoverActive) this.domElement.addClass('active');
}
break; case 'mouseout':
if (this.domElement && this.cssEffects) {
this.recoverActive = false;
if (this.domElement.hasClass('active')) {
this.domElement.removeClass('active');
this.recoverActive = true;
}
//this.domElement.removeClass('hover');
}
break; case 'mousedown':
if (this.domElement && this.cssEffects) {
this.domElement.addClass('active');
}
break; case 'mouseup':
if (this.domElement && this.cssEffects) {
this.domElement.removeClass('active');
this.recoverActive = false;
}
break;
} // switch eventName if (this.handlers[eventName]) {
for (var idx = 0, len = this.handlers[eventName].length; idx < len; idx++) {
var func = this.handlers[eventName][idx]; if (typeof (func) == 'function') {
// actual function reference
func(this, args);
}
else if ((typeof (func) == 'object') && (func.length == 2)) {
// PHP style object + method, i.e. [myObject, 'myMethod']
func[0][func[1]](this, args);
}
else if (typeof (func) == 'string') {
// name of function
window[func](this, args);
}
} // foreach event handler defined
} // user defined handler for event
} };

ZeroClipboard

 JSXmlExcel.js

 /***根据传入数据生成
[
{ field: 'F_UserID', title: '公告ID', width: 100, sortable: true, hidden: true, rowspan: 3 },
{ field: 'F_RealName', title: '姓名', width: 100, sortable: true, rowspan: 3 },
{ field: 'F_LoginName', title: '登录名', width: 100, sortable: true, rowspan: 3 },
{ field: 'F_Password', title: '密码', width: 100, sortable: true, rowspan: 3 },
{ title: '多表头', colspan: 5 }
], [
{ field: 'F_UserNick', title: '昵称', width: 100, sortable: true ,rowspan:2},
{ field: 'F_IdNumber', title: '身份证号', width: 100, sortable: true,rowspan:2 },
{ title: '多表3', colspan: 3}
], [
{ field: 'F_Tel', title: '电话', width: 100, sortable: true },
{ field: 'F_BirthDate', title: '生日', width: 100, sortable: true },
{ field: 'F_EMail', title: '邮箱', width: 100, sortable: true },
]
@param {Array} dataOpts.HeadInfo
@param {Array} dataOpts.RowInfo
@param {object} dataOpts.EwbInfo
@param {int} dataOpts.RowStart
@param {int} dataOpts.ColumStart
@param {String} dataOpts.SheetName
***/
var JSXmlExcel = {
BulidXml: function (dataOpts) {
if (!dataOpts.SheetName)
dataOpts.SheetName = 'Sheet1';
var headerXml = "";
var columnInfo = "";
var cloumIndex = ;
var rowxml = "";
var ExpandedColumnCount = dataOpts.ColumStart ? dataOpts.ColumStart - : ;
var ExpandedRowCount = dataOpts.RowStart ? dataOpts.RowStart - : ;
for (var i = ; i < dataOpts.HeadInfo.length; i++) {
var rowindex = dataOpts.RowStart + i;
headerXml += '<Row ss:Index="' + rowindex + '" ss:AutoFitHeight="0">';
for (var cell = ; cell < dataOpts.HeadInfo[i].length; cell++) {
var curcell = dataOpts.HeadInfo[i][cell];
if (curcell.hidden)
continue;
var cellindex = dataOpts.ColumStart + cloumIndex;
var MergeDown = curcell.rowspan ? curcell.rowspan - : ;
var MergeAcross = curcell.colspan ? curcell.colspan - : ;
if (curcell.field) {
cloumIndex = cloumIndex + ;
ExpandedColumnCount = ExpandedColumnCount + ;
}
headerXml += '<Cell ss:StyleID="TableHeadStyle" ss:Index="' + cellindex +
(MergeDown === ? '' : '" ss:MergeDown="' + MergeDown) +
(MergeAcross === ? '' : '" ss:MergeAcross="' + MergeAcross) +
'"><Data ss:Type="String">' + curcell.title + '</Data></Cell>';
}
headerXml += '</Row>';
ExpandedRowCount = ExpandedRowCount + ;
}
headerXml = columnInfo + headerXml;
//创建数据
for (var i = ; i < dataOpts.RowInfo.length; i++) {
rowxml += '<Row ss:AutoFitHeight="0">';
for (var j = ; j < dataOpts.RowInfo[i].length; j++) {
var value = dataOpts.RowInfo[i][j];
rowxml += '<Cell ss:StyleID="TableHeadStyle" ' +
(j === ? 'ss:Index="' + dataOpts.ColumStart + '"' : ' ') +
' ><Data ss:Type="String">' + value + '</Data></Cell>'
}
rowxml += '</Row> ';
ExpandedRowCount = ExpandedRowCount + ;
}
//创建XMl尾部信息
var TableHeadStyle = '<Style ss:ID="TableHeadStyle"> ' +
'<Alignment ss:Horizontal="Center" ss:Vertical="Center"/> ' +
'<Borders> ' +
'<Border ss:Position="Bottom" ss:LineStyle="Continuous" ss:Weight="1"/> ' +
'<Border ss:Position="Left" ss:LineStyle="Continuous" ss:Weight="1"/> ' +
'<Border ss:Position="Right" ss:LineStyle="Continuous" ss:Weight="1"/> ' +
'<Border ss:Position="Top" ss:LineStyle="Continuous" ss:Weight="1"/> ' +
'</Borders> ' +
'</Style> ';
var Styles = TableHeadStyle;
var WorkSheet = '<Worksheet ss:Name="' + dataOpts.SheetName + '">' +
'<Table ss:ExpandedColumnCount="' + ExpandedColumnCount +
'" ss:ExpandedRowCount="' + ExpandedRowCount +
'" x:FullColumns="1" x:FullRows="1" ss:DefaultColumnWidth="100" ss:DefaultRowHeight="16">' + headerXml + rowxml +
'</Table>';
var xmlInfo = '<?xml version="1.0" encoding="utf-8"?> ' +
'<?mso-application progid="Excel.Sheet"?> ' +
'<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" ' +
'xmlns:o="urn:schemas-microsoft-com:office:office" ' +
'xmlns:x="urn:schemas-microsoft-com:office:excel" ' +
'xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" ' +
'xmlns:html="http://www.w3.org/TR/REC-html40"> ' +
'<DocumentProperties xmlns="urn:schemas-microsoft-com:office:office"> ' +
'</DocumentProperties> ' +
'<OfficeDocumentSettings xmlns="urn:schemas-microsoft-com:office:office"> ' +
'<RemovePersonalInformation/> ' +
'</OfficeDocumentSettings> ' +
'<ExcelWorkbook xmlns="urn:schemas-microsoft-com:office:excel"> ' +
'</ExcelWorkbook><Styles> ' + Styles + '</Styles> ' +
WorkSheet + ' </Worksheet></Workbook>';
return xmlInfo;
}
};

JSXmlExcel.js

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