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js-xlsx的工具类库xlsxUtils的使用详解

时间：2021-07-01 10:21:17 帮助过：83人阅读

这次给大家带来js-xlsx的工具类库xlsxUtils的使用详解，使用js-xlsx的工具类库xlsxUtils的的注意事项有哪些，下面就是实战案例，一起来看一下。

函数说明:

var xlsxUtils = {
    Binary: {
        fixdata(data) { //文件流转BinaryString
            //......
        },
        s2ab(s) { //字符串转字符流
            //......
        }
    },
    _wb: null,//缓存导入时的Workbook 
    _rABS: false,//设置读取方式
    /**
     * @desc  导入根据文件
     * @param {File} f 文件
     * @param {Function} c 回调
     * @return {Object} 回调值
     */
    import(f, c) {        //......
    },    /**
     * @desc  根据表Sheet名获取数据
     * @param {String} name 
     * @return {Object} 
     */
    getSheetByName(name) {//
        //......
    },    /**
     * @desc  根据表Sheet索引获取数据
     * @param {Number} index 
     * @return {Object}
     */
    getSheetByIndex(index = 0) {        //......
    },    /**
     * @desc 导出
     * @param {Array} data 数据{title1:dataList,title2:dataList....}  
     * @param {String} type 
     * @return {Blob}
     */
    export(data, type) {        //......
    },    /**
     * 从数据数组或对象中根据key生成相同key值的对象
     * @param {Object|Array} data 
     * @return {Object}
     */
    readDataHead(data) {        //......
    },    /**
     * @desc 格式化数据为Sheet格式
     * @param {Array} json 数据
     */
    format2Sheet(json, n) {        //......
    },    /**
     * @desc 格式化数据为Sheet格式
     * @param {Array} sheetData 
     * @param {String} title 
     * @param {Object} wb 
     */
    format2WB(sheetData, title = "mySheet", wb) {        //......
    },    /**
     * @desc 将xlsx Workbook 转为blob
     * @param {Array} wb 
     * @param {String} type 类型
     */
    format2Blob(wb, type) {        //......
    },    /**
     * @desc 匹配单元格对应的标识
     * @param {Number} n 
     */
    getCharCol(n) {       //......
    },
};

示例:

导入示例(在线示例):

<!DOCTYPE html><html><head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="http://oss.sheetjs.com/js-xlsx/xlsx.core.min.js"></script> 
    <script src="./xlsx.utils.js"></script></head><body>
    <input type="file" id="demo" />
    <div id="loadInfo"></div>
    <div>
        <div>
            <label>SheetNames</label>:            <span id="SheetNames"></span>
        </div>
        <div>
            <label id="demoName"></label>(示例):            <span id="demoData"></span>
        </div>
    </div>
    <script>
        var demo = document.getElementById("demo");
        demo.onchange = function () {            let f = this.files[0];            let loadInfo = document.getElementById("loadInfo");            let demoName = document.getElementById("demoName");            let demoData = document.getElementById("demoData");
            loadInfo.innerHTML = "正在读取请骚等";
            demoName.innerHTML = "";
            demoData.innerHTML = "";
            xlsxUtils.import(f, (w) => {                document.getElementById("SheetNames").innerHTML = JSON.stringify(w.SheetNames);
                demoName.innerHTML = w.SheetNames[0];
                demoData.innerHTML = JSON.stringify(xlsxUtils.getSheetByIndex(0));
                loadInfo.innerHTML = "读取完成";
            });
        };    </script></body></html>

导出示例(在线示例)

<!DOCTYPE html><html><head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>demo</title>
    <script src="http://oss.sheetjs.com/js-xlsx/xlsx.core.min.js"></script> 
    <script src="xlsx.utils.min.js"></script>
    <script src="saveAs.min.js"> </script></head><body>
    <script>
        var data = [{ 主页: "111", 名称: "6800", 数量: "6800", 昵称: "广告主网" }, { 主页: "433", 名称: "6800", 数量: "6800", 昵称: "广告主网" }, { 名称: "22", 商家: "6800", 数量: "6800", 昵称: "广告主网", }, { 名称: "43", 商家: "6800", 数量: "6800", 昵称: "广告主网", }, { 店家: "43", 价格: "6800", 数量: "6800", 昵称: "广告主网", }];    </script>
    <button id="down">导出</button>
    <script>
        var down = document.getElementById("down");
        down.onclick = function () {
            data.unshift(xlsxUtils.readDataHead(data));            var blob = xlsxUtils.export({ "Sheet1": data, "Sheet2": [{ "a": "A", "b": "B" }, { "a": 1, "b": "2" }, { "a": 3, "b": 4 }, { "a": 5, "b": 6 }] });
            saveAs(URL.createObjectURL(blob), "aa.xlsx");
        };    </script></body></html>

自定义起始列导出示例(在线示例)

<!DOCTYPE html><html><head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>demo</title>
    <script src="http://oss.sheetjs.com/js-xlsx/xlsx.core.min.js"></script> 
    <script src="xlsx.utils.min.js"></script>
    <script src="saveAs.min.js"> </script></head><body>
    <script>
        var data = [{ 主页: "111", 名称: "6800", 数量: "6800", 昵称: "广告主网" }, { 主页: "433", 名称: "6800", 数量: "6800", 昵称: "广告主网" }, { 名称: "22", 商家: "6800", 数量: "6800", 昵称: "广告主网", }, { 名称: "43", 商家: "6800", 数量: "6800", 昵称: "广告主网", }, { 店家: "43", 价格: "6800", 数量: "6800", 昵称: "广告主网", }];    </script>
    <button id="down">导出</button>
    <script>
        var down = document.getElementById("down");
        down.onclick = function () {
            data.unshift(xlsxUtils.readDataHead(data)); 
            var tmpdata = xlsxUtils.format2Sheet(data, 2);            var tmpWB = xlsxUtils.format2WB(tmpdata, "Sheet1");
            tmpdata = xlsxUtils.format2Sheet([{ "a": "A", "b": "B" }, { "a": 1, "b": "2" }, { "a": 3, "b": 4 }, { "a": 5, "b": 6 }], 4);
            tmpWB = xlsxUtils.format2WB(tmpdata, "Sheet2", tmpWB);            var blob = xlsxUtils.format2Blob(tmpWB);
            saveAs(URL.createObjectURL(blob), "aa.xlsx");
        };    </script></body></html>

多数据合并导出到单表示例(在线示例)

<!DOCTYPE html><html><head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>demo</title>
    <script src="http://oss.sheetjs.com/js-xlsx/xlsx.core.min.js"></script> 
    <script src="xlsx.utils.min.js"></script>
    <script src="saveAs.min.js"> </script></head><body>
    <script>
        var data = [{ 主页: "111", 名称: "6800", 数量: "6800", 昵称: "广告主网" }, { 主页: "433", 名称: "6800", 数量: "6800", 昵称: "广告主网" }, { 名称: "22", 商家: "6800", 数量: "6800", 昵称: "广告主网", }, { 名称: "43", 商家: "6800", 数量: "6800", 昵称: "广告主网", }, { 店家: "43", 价格: "6800", 数量: "6800", 昵称: "广告主网", }];    </script>
    <button id="down">导出</button>
    <script>
        var down = document.getElementById("down");
        down.onclick = function () {            var d1 = xlsxUtils.format2Sheet([{ "a": "A", "b": "B" }, { "a": 1, "b": "2" }, { "a": 3, "b": 4 }, { "a": 5, "b": 6 }]);            var h=xlsxUtils.readDataHead(data);//读取data的列头数据
            data.unshift(h);//将列头追加到最data的前
            var em={};//用于换行
            Object.keys(h).forEach((v)=>{
                em[v]="";
            });            for(var i=0;i<5;i++){//换5行
                data.unshift(em);
            }            var d2 = xlsxUtils.format2Sheet(data, 3);//3代表从D列开始
            d1=Object.assign(d1,d2); 
            var tmpWB = xlsxUtils.format2WB(d1, "Sheet1"); 
            var blob = xlsxUtils.format2Blob(tmpWB);
            saveAs(URL.createObjectURL(blob), "aa.xlsx");
        };    </script></body></html>

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