原datagrid-export.js导出Excel只能导一级表头的Excel,因项目需要,对其进行了修改优化。
在js文件中,主要修改了toHtml方法。导出Excel步骤:先将datagrid的数据生成html的table,根据table样式导出到Excel文件。
方法:
(function($){ function getRows(target){ var state = $(target).data(‘datagrid‘); if (state.filterSource){ return state.filterSource.rows; } else { return state.data.rows; } } function getFooterRows(target){ var state = $(target).data(‘datagrid‘); return state.data.footer || []; } function toHtml(target, rows, footer, caption) { rows = rows || getRows(target); rows = rows.concat(footer || getFooterRows(target)); var dg = $(target); var data = [‘<table border="1" rull="all" style="border-collapse:collapse">‘]; var fields = dg.datagrid(‘getColumnFields‘, true).concat(dg.datagrid(‘getColumnFields‘, false)); //获取所有列信息 var cc = dg.datagrid(‘options‘).columns; /* var columns = dg.datagrid(‘options‘).columns[0]; var fields =[]; var j = 0; //剔除hidden为true的字段 for(var i=0;i<columns.length;i++){ if(columns[i].hidden){} else{ fields[j]=columns[i].field; j++; } } */ var trStyle = ‘height:32px‘; var tdStyle0 = ‘vertical-align:middle;padding:0 4px‘; if (caption) { data.push(‘<caption>‘ + caption + ‘</caption>‘); } //写入表头信息,先判断是否为多级表头 for (var j = 0; j < cc.length; j++) { data.push(‘<tr style="‘ + trStyle + ‘">‘); var cols = cc[j]; for (var i = 0; i < cols.length; i++) { //判断是否未隐藏字段 if (cols[i].hidden == true) { continue; } var tdStyle = tdStyle0 + ‘;width:‘ + cols[i].boxWidth + ‘px;‘; tdStyle += ‘;text-align:‘ + (cols[i].halign || cols[i].align || ‘‘); //定义行列信息,初始化行和列的值为1 var colspans = 1; var rowspans = 1; if (cols[i].rowspan === undefined) { } else { rowspans = cols[i].rowspan; } if (cols[i].colspan === undefined) { } else { colspans = cols[i].colspan; } data.push(‘<td style="‘ + tdStyle + ‘" colspan="‘ + colspans + ‘" rowspan="‘ + rowspans + ‘">‘ + cols[i].title + ‘</td>‘); } data.push(‘</tr>‘); } //原方法 /* data.push(‘<tr style="‘+trStyle+‘">‘); for(var i=0; i<fields.length; i++){ var col = dg.datagrid(‘getColumnOption‘, fields[i]); var tdStyle = tdStyle0 + ‘;width:‘+col.boxWidth+‘px;‘; tdStyle += ‘;text-align:‘+(col.halign||col.align||‘‘); data.push(‘<td style="‘+tdStyle+‘">‘+col.title+‘</td>‘); } data.push(‘</tr>‘); */ $.map(rows, function (row) { data.push(‘<tr style="‘ + trStyle + ‘">‘); for (var i = 0; i < fields.length; i++) { var field = fields[i]; var col = dg.datagrid(‘getColumnOption‘, field); if (col.hidden == true) { continue; } var value = row[field]; if (value == undefined) { value = ‘‘; } var tdStyle = tdStyle0; tdStyle += ‘;text-align:‘ + (col.align || ‘‘); data.push( ‘<td style="‘ + tdStyle + ‘">‘ + value + ‘</td>‘ ); } data.push(‘</tr>‘); }); data.push(‘</table>‘); return data.join(‘‘); } function toArray(target, rows){ rows = rows || getRows(target); var dg = $(target); var fields = dg.datagrid(‘getColumnFields‘,true).concat(dg.datagrid(‘getColumnFields‘,false)); var data = []; var r = []; for(var i=0; i<fields.length; i++){ var col = dg.datagrid(‘getColumnOption‘, fields[i]); r.push(col.title); } data.push(r); $.map(rows, function(row){ var r = []; for(var i=0; i<fields.length; i++){ r.push(row[fields[i]]); } data.push(r); }); return data; } function print(target, param){ var title = null; var rows = null; var footer = null; var caption = null; if (typeof param == ‘string‘){ title = param; } else { title = param[‘title‘]; rows = param[‘rows‘]; footer = param[‘footer‘]; caption = param[‘caption‘]; } var newWindow = window.open(‘‘, ‘‘, ‘width=800, height=500‘); var document = newWindow.document.open(); var content = ‘<!doctype html>‘ + ‘<html>‘ + ‘<head>‘ + ‘<meta charset="utf-8">‘ + ‘<title>‘+title+‘</title>‘ + ‘</head>‘ + ‘<body>‘ + toHtml(target, rows, footer, caption) + ‘</body>‘ + ‘</html>‘; document.write(content); document.close(); newWindow.print(); } function b64toBlob(data){ var sliceSize = 512; var chars = atob(data); var byteArrays = []; for(var offset=0; offset<chars.length; offset+=sliceSize){ var slice = chars.slice(offset, offset+sliceSize); var byteNumbers = new Array(slice.length); for(var i=0; i<slice.length; i++){ byteNumbers[i] = slice.charCodeAt(i); } var byteArray = new Uint8Array(byteNumbers); byteArrays.push(byteArray); } return new Blob(byteArrays, { type: ‘‘ }); } function toExcel(target, param){ var filename = null; var rows = null; var footer = null; var caption = null; var worksheet = ‘Worksheet‘; if (typeof param == ‘string‘){ filename = param; } else { filename = param[‘filename‘]; rows = param[‘rows‘]; footer = param[‘footer‘]; caption = param[‘caption‘]; worksheet = param[‘worksheet‘] || ‘Worksheet‘; } var dg = $(target); var uri = ‘data:application/vnd.ms-excel;base64,‘ , template = ‘<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><meta http-equiv="content-type" content="application/vnd.ms-excel; charset=UTF-8"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body>{table}</body></html>‘ , base64 = function (s) { return window.btoa(unescape(encodeURIComponent(s))) } , format = function (s, c) { return s.replace(/{(\w+)}/g, function (m, p) { return c[p]; }) } var table = toHtml(target, rows, footer, caption); var ctx = { worksheet: worksheet, table: table }; var data = base64(format(template, ctx)); if (window.navigator.msSaveBlob){ var blob = b64toBlob(data); window.navigator.msSaveBlob(blob, filename); } else { var alink = $(‘<a style="display:none"></a>‘).appendTo(‘body‘); alink[0].href = uri + data; alink[0].download = filename; alink[0].click(); alink.remove(); } } $.extend($.fn.datagrid.methods, { toHtml: function(jq, rows){ return toHtml(jq[0], rows); }, toArray: function(jq, rows){ return toArray(jq[0], rows); }, toExcel: function(jq, param){ return jq.each(function(){ toExcel(this, param); }); }, print: function(jq, param){ return jq.each(function(){ print(this, param); }); } }); })(jQuery);
调用:
if ($(‘#divInfo‘).datagrid(‘getData‘)) { $(‘#divInfo‘).datagrid(‘toExcel‘, ‘导出文件名称.xls‘); }
备注:
//取值为formatter中data的值 formatter: function (value,data) { data.Name=‘你好‘ return data.Name; }
使用EasyUI datagrid-export.js导出Excel,适用于多级表头
原文:https://www.cnblogs.com/zhang1f/p/13936742.html