js-xlsx的工具类库xlsxUtils的使用详解
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2022-03-30 16:24:10
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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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