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纯前端利用 js-xlsx 实现 Excel 文件导入导出功能示

纯前端利用 js-xlsx 实现 Excel 文件导入导出功能示

作者: 关爱单身狗成长协会 | 来源:发表于2017-07-10 19:04 被阅读19087次

    详细说明请阅读:纯前端利用 js-xlsx实现 Excel 文件导入导出功能(1)

    导入功能实现

    官方示例:http://oss.sheetjs.com/js-xlsx/

    <!DOCTYPE html>
    <html>
    <head>
        <meta charset="UTF-8">
        <title></title>
        <script src="http://oss.sheetjs.com/js-xlsx/xlsx.full.min.js"></script>
    </head>
    <body>
        <input type="file" onchange="importf(this)" />
        <div id="demo"></div>
        <script>
            var rABS = false; //是否将文件读取为二进制字符串
            function importf(obj) {//导入
                if (!obj.files) { return; }
                var f = obj.files[0];
                {
                    var reader = new FileReader();
                    var name = f.name;
                    reader.onload = function (e) {
                        var data = e.target.result;
                        var wb;
                        if (rABS) {
                            wb = XLSX.read(data, { type: 'binary' });
                        } else {
                            var arr = fixdata(data);
                            wb = XLSX.read(btoa(arr), { type: 'base64' });
                        }
                        document.getElementById("demo").innerHTML = JSON.stringify(XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]]));
                    };
                    if (rABS) reader.readAsBinaryString(f);
                    else reader.readAsArrayBuffer(f);
                }
            }
            function fixdata(data) {
                var o = "", l = 0, w = 10240;
                for (; l < data.byteLength / w; ++l) o += String.fromCharCode.apply(null, new Uint8Array(data.slice(l * w, l * w + w)));
                o += String.fromCharCode.apply(null, new Uint8Array(data.slice(l * w)));
                return o;
            }
        </script>
    </body>
    </html>
    

    2.导出功能的实现

    注意:导出其他格式文件可能会出现乱码问题,如有好的解决方案请留言

    <!DOCTYPE html>
    <html>
    
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    
    <body>
        <button onclick="downloadExl(jsono)">导出</button>
        <script src="http://oss.sheetjs.com/js-xlsx/xlsx.full.min.js"></script>
        <!--调用FileSaver saveAs函数可以实现文件下载-->
        <!--<script src="http://sheetjs.com/demos/Blob.js"></script>
        <script src="http://sheetjs.com/demos/FileSaver.js"></script>-->
        <script>
            //如果使用 FileSaver.js 就不要同时使用以下函数
            function saveAs(obj, fileName) {//当然可以自定义简单的下载文件实现方式 
                var tmpa = document.createElement("a");
                tmpa.download = fileName || "下载";
                tmpa.href = URL.createObjectURL(obj); //绑定a标签
                tmpa.click(); //模拟点击实现下载
                setTimeout(function () { //延时释放
                    URL.revokeObjectURL(obj); //用URL.revokeObjectURL()来释放这个object URL
                }, 100);
            }
            var jsono = [{ //测试数据
                "保质期临期预警(天)": "adventLifecycle",
                "商品标题": "title",
                "建议零售价": "defaultPrice",
                "高(cm)": "height",
                "商品描述": "Description",
                "保质期禁售(天)": "lockupLifecycle",
                "商品名称": "skuName",
                "商品简介": "brief",
                "宽(cm)": "width",
                "阿达": "asdz",
                "货号": "goodsNo",
                "商品条码": "skuNo",
                "商品品牌": "brand",
                "净容积(cm^3)": "netVolume",
                "是否保质期管理": "isShelfLifeMgmt",
                "是否串号管理": "isSNMgmt",
                "商品颜色": "color",
                "尺码": "size",
                "是否批次管理": "isBatchMgmt",
                "商品编号": "skuCode",
                "商品简称": "shortName",
                "毛重(g)": "grossWeight",
                "长(cm)": "length",
                "英文名称": "englishName",
                "净重(g)": "netWeight",
                "商品分类": "categoryId",
                "这里超过了": 1111.0,
                "保质期(天)": "expDate"
            }];
            const wopts = { bookType: 'xlsx', bookSST: false, type: 'binary' };//这里的数据是用来定义导出的格式类型
            // const wopts = { bookType: 'csv', bookSST: false, type: 'binary' };//ods格式
            // const wopts = { bookType: 'ods', bookSST: false, type: 'binary' };//ods格式
            // const wopts = { bookType: 'xlsb', bookSST: false, type: 'binary' };//xlsb格式
            // const wopts = { bookType: 'fods', bookSST: false, type: 'binary' };//fods格式
            // const wopts = { bookType: 'biff2', bookSST: false, type: 'binary' };//xls格式
    
            function downloadExl(data, type) {
                const wb = { SheetNames: ['Sheet1'], Sheets: {}, Props: {} };
                wb.Sheets['Sheet1'] = XLSX.utils.json_to_sheet(data);//通过json_to_sheet转成单页(Sheet)数据
                saveAs(new Blob([s2ab(XLSX.write(wb, wopts))], { type: "application/octet-stream" }), "这里是下载的文件名" + '.' + (wopts.bookType=="biff2"?"xls":wopts.bookType));
            }
            function s2ab(s) {
                if (typeof ArrayBuffer !== 'undefined') {
                    var buf = new ArrayBuffer(s.length);
                    var view = new Uint8Array(buf);
                    for (var i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
                    return buf;
                } else {
                    var buf = new Array(s.length);
                    for (var i = 0; i != s.length; ++i) buf[i] = s.charCodeAt(i) & 0xFF;
                    return buf;
                }
            }
        </script>
    </body>
    </html>
    

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