refactor: ♻️ 演示界面统一至demo下，精简删除demo目录即可
Former-commit-id: cef5e36eb0e60299d1a72b9a12c9ea8d93a77244
This commit is contained in:
hxr
257
src/views/demo/table/Export2Excel.js
Normal file
257
src/views/demo/table/Export2Excel.js
Normal file
@@ -0,0 +1,257 @@
|
||||
/* eslint-disable */
|
||||
import * as XLSX from "xlsx";
|
||||
|
||||
// TODO: this is a toy example, may be file-saver is a better choice
|
||||
// import { saveAs } from 'file-saver'
|
||||
function saveAs(blob, fileName) {
|
||||
const type = fileName.split(".")[1];
|
||||
console.log(type);
|
||||
const file = new window.File([blob], fileName, { type: type });
|
||||
console.log(file);
|
||||
// 创建一个指向 File 对象的 URL
|
||||
const url = URL.createObjectURL(file);
|
||||
|
||||
// 创建一个 a 标签
|
||||
const a = document.createElement("a");
|
||||
a.href = url;
|
||||
a.download = fileName;
|
||||
|
||||
// 将 a 标签添加到文档中
|
||||
document.body.appendChild(a);
|
||||
|
||||
// 模拟点击 a 标签，开始下载
|
||||
a.click();
|
||||
|
||||
// 下载完成后，从文档中移除 a 标签，并释放 URL
|
||||
document.body.removeChild(a);
|
||||
URL.revokeObjectURL(url);
|
||||
return file;
|
||||
}
|
||||
|
||||
function generateArray(table) {
|
||||
var out = [];
|
||||
var rows = table.querySelectorAll("tr");
|
||||
var ranges = [];
|
||||
for (var R = 0; R < rows.length; ++R) {
|
||||
var outRow = [];
|
||||
var row = rows[R];
|
||||
var columns = row.querySelectorAll("td");
|
||||
for (var C = 0; C < columns.length; ++C) {
|
||||
var cell = columns[C];
|
||||
var colspan = cell.getAttribute("colspan");
|
||||
var rowspan = cell.getAttribute("rowspan");
|
||||
var cellValue = cell.innerText;
|
||||
if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;
|
||||
|
||||
//Skip ranges
|
||||
ranges.forEach(function (range) {
|
||||
if (
|
||||
R >= range.s.r &&
|
||||
R <= range.e.r &&
|
||||
outRow.length >= range.s.c &&
|
||||
outRow.length <= range.e.c
|
||||
) {
|
||||
for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
|
||||
}
|
||||
});
|
||||
|
||||
//Handle Row Span
|
||||
if (rowspan || colspan) {
|
||||
rowspan = rowspan || 1;
|
||||
colspan = colspan || 1;
|
||||
ranges.push({
|
||||
s: {
|
||||
r: R,
|
||||
c: outRow.length,
|
||||
},
|
||||
e: {
|
||||
r: R + rowspan - 1,
|
||||
c: outRow.length + colspan - 1,
|
||||
},
|
||||
});
|
||||
}
|
||||
|
||||
//Handle Value
|
||||
outRow.push(cellValue !== "" ? cellValue : null);
|
||||
|
||||
//Handle Colspan
|
||||
if (colspan) for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
|
||||
}
|
||||
out.push(outRow);
|
||||
}
|
||||
return [out, ranges];
|
||||
}
|
||||
|
||||
function datenum(v, date1904) {
|
||||
if (date1904) v += 1462;
|
||||
var epoch = Date.parse(v);
|
||||
return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
|
||||
}
|
||||
|
||||
function sheet_from_array_of_arrays(data, opts) {
|
||||
var ws = {};
|
||||
var range = {
|
||||
s: {
|
||||
c: 10000000,
|
||||
r: 10000000,
|
||||
},
|
||||
e: {
|
||||
c: 0,
|
||||
r: 0,
|
||||
},
|
||||
};
|
||||
for (var R = 0; R != data.length; ++R) {
|
||||
for (var C = 0; C != data[R].length; ++C) {
|
||||
if (range.s.r > R) range.s.r = R;
|
||||
if (range.s.c > C) range.s.c = C;
|
||||
if (range.e.r < R) range.e.r = R;
|
||||
if (range.e.c < C) range.e.c = C;
|
||||
var cell = {
|
||||
v: data[R][C],
|
||||
};
|
||||
if (cell.v == null) continue;
|
||||
var cell_ref = XLSX.utils.encode_cell({
|
||||
c: C,
|
||||
r: R,
|
||||
});
|
||||
|
||||
if (typeof cell.v === "number") cell.t = "n";
|
||||
else if (typeof cell.v === "boolean") cell.t = "b";
|
||||
else if (cell.v instanceof Date) {
|
||||
cell.t = "n";
|
||||
cell.z = XLSX.SSF._table[14];
|
||||
cell.v = datenum(cell.v);
|
||||
} else cell.t = "s";
|
||||
|
||||
ws[cell_ref] = cell;
|
||||
}
|
||||
}
|
||||
if (range.s.c < 10000000) ws["!ref"] = XLSX.utils.encode_range(range);
|
||||
return ws;
|
||||
}
|
||||
|
||||
function Workbook() {
|
||||
if (!(this instanceof Workbook)) return new Workbook();
|
||||
this.SheetNames = [];
|
||||
this.Sheets = {};
|
||||
}
|
||||
|
||||
function s2ab(s) {
|
||||
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;
|
||||
}
|
||||
|
||||
export function export_table_to_excel(id) {
|
||||
var theTable = document.getElementById(id);
|
||||
var oo = generateArray(theTable);
|
||||
var ranges = oo[1];
|
||||
|
||||
/* original data */
|
||||
var data = oo[0];
|
||||
var ws_name = "SheetJS";
|
||||
|
||||
var wb = new Workbook(),
|
||||
ws = sheet_from_array_of_arrays(data);
|
||||
|
||||
/* add ranges to worksheet */
|
||||
// ws['!cols'] = ['apple', 'banan'];
|
||||
ws["!merges"] = ranges;
|
||||
|
||||
/* add worksheet to workbook */
|
||||
wb.SheetNames.push(ws_name);
|
||||
wb.Sheets[ws_name] = ws;
|
||||
|
||||
var wbout = XLSX.write(wb, {
|
||||
bookType: "xlsx",
|
||||
bookSST: false,
|
||||
type: "binary",
|
||||
});
|
||||
|
||||
saveAs(
|
||||
new Blob([s2ab(wbout)], {
|
||||
type: "application/octet-stream",
|
||||
}),
|
||||
"test.xlsx"
|
||||
);
|
||||
}
|
||||
|
||||
export function export_json_to_excel({
|
||||
multiHeader = [],
|
||||
header,
|
||||
data,
|
||||
filename,
|
||||
merges = [],
|
||||
autoWidth = true,
|
||||
bookType = "xlsx",
|
||||
} = {}) {
|
||||
/* original data */
|
||||
filename = filename || "excel-list";
|
||||
data = [...data];
|
||||
data.unshift(header);
|
||||
|
||||
for (let i = multiHeader.length - 1; i > -1; i--) {
|
||||
data.unshift(multiHeader[i]);
|
||||
}
|
||||
|
||||
var ws_name = "SheetJS";
|
||||
var wb = new Workbook(),
|
||||
ws = sheet_from_array_of_arrays(data);
|
||||
|
||||
if (merges.length > 0) {
|
||||
if (!ws["!merges"]) ws["!merges"] = [];
|
||||
merges.forEach((item) => {
|
||||
ws["!merges"].push(XLSX.utils.decode_range(item));
|
||||
});
|
||||
}
|
||||
|
||||
if (autoWidth) {
|
||||
/*设置worksheet每列的最大宽度*/
|
||||
const colWidth = data.map((row) =>
|
||||
row.map((val) => {
|
||||
/*先判断是否为null/undefined*/
|
||||
if (val == null) {
|
||||
return {
|
||||
wch: 10,
|
||||
};
|
||||
} else if (val.toString().charCodeAt(0) > 255) {
|
||||
/*再判断是否为中文*/
|
||||
return {
|
||||
wch: val.toString().length * 2,
|
||||
};
|
||||
} else {
|
||||
return {
|
||||
wch: val.toString().length,
|
||||
};
|
||||
}
|
||||
})
|
||||
);
|
||||
/*以第一行为初始值*/
|
||||
let result = colWidth[0];
|
||||
for (let i = 1; i < colWidth.length; i++) {
|
||||
for (let j = 0; j < colWidth[i].length; j++) {
|
||||
if (result[j]["wch"] < colWidth[i][j]["wch"]) {
|
||||
result[j]["wch"] = colWidth[i][j]["wch"];
|
||||
}
|
||||
}
|
||||
}
|
||||
ws["!cols"] = result;
|
||||
}
|
||||
|
||||
/* add worksheet to workbook */
|
||||
wb.SheetNames.push(ws_name);
|
||||
wb.Sheets[ws_name] = ws;
|
||||
|
||||
var wbout = XLSX.write(wb, {
|
||||
bookType: bookType,
|
||||
bookSST: false,
|
||||
type: "binary",
|
||||
});
|
||||
saveAs(
|
||||
new Blob([s2ab(wbout)], {
|
||||
type: "application/octet-stream",
|
||||
}),
|
||||
`${filename}.${bookType}`
|
||||
);
|
||||
}
|
||||
Reference in New Issue
Block a user