sheetjs的使用
<!-- https://sheetjs.com/ 资源下载地址 xlsx.full.min.js -->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>sheetjs的使用</title>
<style type="text/css">
body
{
font-family: Arial;
font-size: 10pt;
}
table
{
border: 1px solid #ccc;
border-collapse: collapse;
}
table th
{
background-color: #F7F7F7;
color: #333;
font-weight: bold;
}
table th, table td
{
padding: 5px;
border: 1px solid #ccc;
}
</style>
<script type="text/javascript" src="./xlsx.full.min.js"></script>
<script type="text/javascript">
function myUpload() {
//Reference the FileUpload element.
var fileUpload = document.getElementById("fileUpload");
//Validate whether File is valid Excel file.
var regex = /^([a-zA-Z0-9\s_\\.\-:])+(.xls|.xlsx)$/;
if (regex.test(fileUpload.value.toLowerCase())) {
if (typeof (FileReader) != "undefined") {
var reader = new FileReader();
//For Browsers other than IE.
if (reader.readAsBinaryString) {
reader.onload = function (e) {
ProcessExcel(e.target.result);
};
reader.readAsBinaryString(fileUpload.files[0]);
} else {
//For IE Browser.
reader.onload = function (e) {
var data = "";
var bytes = new Uint8Array(e.target.result);
for (var i = 0; i < bytes.byteLength; i++) {
data += String.fromCharCode(bytes[i]);
}
ProcessExcel(data);
};
reader.readAsArrayBuffer(fileUpload.files[0]);
}
} else {
alert("This browser does not support HTML5.");
}
} else {
alert("Please upload a valid Excel file.");
}
};
function ProcessExcel(data) {
//Read the Excel File data.
var workbook = XLSX.read(data, {
type: 'binary'
});
//Fetch the name of First Sheet.
var firstSheet = workbook.SheetNames[0];
//Read all rows from First Sheet into an JSON array.
var excelRows = XLSX.utils.sheet_to_row_object_array(workbook.Sheets[firstSheet]);
//Create a HTML Table element.
var table = document.createElement("table");
table.border = "1";
//Add the header row.
var row = table.insertRow(-1);
//Add the header cells.
var headerCell = document.createElement("TH");
headerCell.innerHTML = "Id";
row.appendChild(headerCell);
headerCell = document.createElement("TH");
headerCell.innerHTML = "Name";
row.appendChild(headerCell);
headerCell = document.createElement("TH");
headerCell.innerHTML = "Country";
row.appendChild(headerCell);
headerCell = document.createElement("TH");
headerCell.innerHTML = "PROVICE";
row.appendChild(headerCell);
//Add the data rows from Excel file.
for (var i = 0; i < excelRows.length; i++) {
//Add the data row.
var row = table.insertRow(-1);
//Add the data cells.
var cell = row.insertCell(-1);
cell.innerHTML = excelRows[i].This;
cell = row.insertCell(-1);
cell.innerHTML = excelRows[i].is;
cell = row.insertCell(-1);
cell.innerHTML = excelRows[i].a;
cell = row.insertCell(-1);
cell.innerHTML = excelRows[i].Test;
}
var dvExcel = document.getElementById("dvExcel");
dvExcel.innerHTML = "";
dvExcel.appendChild(table);
};
var table = document.getElementById("table");
/*
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"
}];
*/
var tmpDown; //导出的二进制对象
function downloadExl(json, type) {
var aarray=[];
var rowsorg=document.getElementById("dvExcel").childNodes[0].rows;
keyMap=document.getElementById("dvExcel").childNodes[0].rows[0].outerText.split();
for(var z=1;z<rowsorg.length;z++)
{
var temp = rowsorg[z].outerText.split();
var aObj=new Object();
aObj.Id=temp[0];
aObj.Name=temp[1];
aObj.Country=temp[2];
aObj.PROVICE=temp[3];
aarray.push(aObj);
}
var tmpdata = aarray[0];
aarray.unshift({});
var keyMap = []; //获取keys
//keyMap =Object.keys(json[0]);
for (var k in tmpdata) {
keyMap.push(k);
aarray[0][k] = k;
}
var tmpdata = [];//用来保存转换好的json
aarray.map((v, i) => keyMap.map((k, j) => Object.assign({}, {
v: v[k],
position: (j > 25 ? getCharCol(j) : String.fromCharCode(65 + j)) + (i + 1)
}))).reduce((prev, next) => prev.concat(next)).forEach((v, i) => tmpdata[v.position] = {
v: v.v
});
var outputPos = Object.keys(tmpdata); //设置区域,比如表格从A1到D10
var tmpWB = {
SheetNames: ['mySheet'], //保存的表标题
Sheets: {
'mySheet': Object.assign({},
tmpdata, //内容
{
'!ref': outputPos[0] + ':' + outputPos[outputPos.length - 1] //设置填充区域
})
}
};
tmpDown = new Blob([s2ab(XLSX.write(tmpWB,
{bookType: (type == undefined ? 'xlsx':type),bookSST: false, type: 'binary'}//这里的数据是用来定义导出的格式类型
))], {
type: ""
}); //创建二进制对象写入转换好的字节流
var href = URL.createObjectURL(tmpDown); //创建对象超链接
document.getElementById("hf").href = href; //绑定a标签
document.getElementById("hf").click(); //模拟点击实现下载
setTimeout(function() { //延时释放
URL.revokeObjectURL(tmpDown); //用URL.revokeObjectURL()来释放这个object URL
}, 100);
}
function s2ab(s) { //字符串转字符流
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;
}
// 将指定的自然数转换为26进制表示。映射关系：[0-25] -> [A-Z]。
function getCharCol(n) {
let temCol = '',
s = '',
m = 0
while (n > 0) {
m = n % 26 + 1
s = String.fromCharCode(m + 64) + s
n = (n - m) / 26
}
return s
}
</script>
</head>
<body>
<input type="file" id="fileUpload" />
<input type="button" id="upload" value="Upload" οnclick="myUpload()" />
<hr />
<div id="dvExcel">
</div>
<button οnclick="downloadExl(jsono)">导出</button>
<a href="" download="这里是下载的文件名.xlsx" id="hf"></a>
</body>
</html>