vue中利用exceljs和file-saver插件实现纯前端表格导出Excel（支持样式配置 - ToB企服应用市场:ToB评测及商务社交产业平台

// 封装exceljs
const ExcelJS = require('exceljs');
const FileSaver = require('file-saver');
exportDataToExcel(config, fileName) {
if (!config) return;
const options = {
fileName: fileName || `导出excel文件【${Date.now()}】.xlsx`,
worksheets: []
}
if(!Array.isArray(config)) {
config = [config]
}
config.forEach((item) => {
// 深拷贝data【JSON.stringify有缺陷，可自行换成_.cloneDeep】
const data = JSON.parse(JSON.stringify(item.data));
const results = data.map(obj => {
return item.fields.map(key => {
return obj[key]
})
})
// 生成完整excel数据
let excelData = [];
excelData = excelData.concat(item.headers).concat(results);
// 单元格合并处理【excel数据的第一行/列是从1开始】
let excelMerges = [];
excelMerges = item.merges.map(m => {
return [m.row + 1, m.col + 1, m.row + m.rowspan, m.col + m.colspan]
})
// 单元格配置处理 excel数据的第一行/列是从1开始】
let excelAttrs = [];
excelAttrs = item.attrs.map(attr => {
attr.rowStart += 1;
attr.rowEnd += 1;
attr.colStart += 1;
attr.colEnd += 1;
return attr
})
options.worksheets.push({
data: excelData,
merges: excelMerges,
attrs: excelAttrs,
views: item.views,
columnsWidth: item.columnsWidth,
protect: item.protect,
sheetName: item.sheetName
})
})
this.createExcel(options)
},
// 创建Excel文件方法
async createExcel(options) {
if (!options.worksheets.length) return;
// 创建工作簿
const workbook = new ExcelJS.Workbook();
for (let i = 0; i < options.worksheets.length; i++) {
const sheetOption = options.worksheets[i];
// 创建工作表
const sheet = workbook.addWorksheet(sheetOption.sheetName || 'sheet' + (i + 1));
// 添加数据行
sheet.addRows(sheetOption.data);
// 配置视图
sheet.views = sheetOption.views;
// 单元格合并处理【开始行，开始列，结束行，结束列】
if (sheetOption.merges){
sheetOption.merges.forEach((item) => {
sheet.mergeCells(item)
});
}
// 工作表保
if (sheetOption.protect) {
const res = await sheet.protect(sheetOption.protect.password, sheetOption.protect.options);
}
// 单元格样式处理
if (sheetOption.attrs.length) {
sheetOption.attrs.forEach((item) => {
const attr = item.attr || {};
// 获取开始行-结束行; 开始列-结束列
const rowStart = item.rowStart;
const rowEnd = item.rowEnd;
const colStart = item.colStart;
const colEnd = item.colEnd;
if (rowStart) { // 设置行
for (let r = rowStart; r <= rowEnd; r++) {
// 获取当前行
const row = sheet.getRow(r);
if (colStart) { // 列设置
for (let c = colStart; c <= colEnd; c++) {
// 获取当前单元格
const cell = row.getCell(c);
Object.keys(attr).forEach((key) => {
// 给当前单元格设置定义的样式
cell[key] = attr[key];
});
}
} else {
// 未设置列，整行设置【大纲级别】
Object.keys(attr).forEach((key) => {
row[key] = attr[key];
});
}
}
} else if (colStart) { // 未设置行，只设置了列
for (let c = colStart; c <= colEnd; c++) {
// 获取当前列，整列设置【大纲级别】
const column = sheet.getColumn(c);
Object.keys(attr).forEach((key) => {
column[key] = attr[key];
});
}
} else {
// 没有设置具体的行列，则为整表设置
Object.keys(attr).forEach((key) => {
sheet[key] = attr[key];
});
}
})
}
// 列宽设置
if (sheetOption.columnsWidth) {
for (let i = 0; i < sheet.columns.length; i++) {
sheet.columns[i].width = sheetOption.columnsWidth[i]
}
}
}
// 生成excel文件
workbook.xlsx.writeBuffer().then(buffer => {
// application/octet-stream 二进制数据
FileSaver.saveAs(new Blob([buffer], { type: 'application/octet-stream' }), options.fileName)
})
}

复制代码

exportExcel(){
const header = [
["所在部门","隐患总数","已整改隐患数","整改率","一般隐患","较大隐患","重大隐患"],
["","","","","隐患数","已整改数","整改中数","整改率(%)","隐患数","已整改数","整改中数","整改率(%)","隐患数","已整改数","整改中数","整改率(%)"]
]
const fields = ["name","count","count_yzg","count_zgz","zgl","count_common","count_common_yzg","count_common_zgz","ybyh_zgl","count_bigger","count_bigger_yzg","count_bigger_zgz","jdyh_zgl","count_biggest","count_biggest_yzg","count_biggest_zgz","zdyh_zgl"]
const merges = [
//导出表格的第一行第一列，行合并2个单元格，列就用自己的一个；
{row: 0, col: 0, rowspan: 2, colspan: 1},
{row: 0, col: 1, rowspan: 2, colspan: 1},
{row: 0, col: 2, rowspan: 2, colspan: 1},
{row: 0, col: 3, rowspan: 2, colspan: 1},
{row: 0, col: 4, rowspan: 2, colspan: 1},
{row: 0, col: 5, rowspan: 1, colspan: 4},
{row: 0, col: 9, rowspan: 1, colspan: 4},
{row: 0, col: 13, rowspan: 1, colspan: 4},
]
const config = this.exportConfig(header,fields,merges,this.tabledata[this.type]);//配置
this.$utils.exportDataToExcel(config, "隐患治理情况统计表.xlsx");
},
//导出表格配置
exportConfig(header = [], fields = [], merges = [], tableData = []){
// console.log(header, fields, merges, tableData );
// return
//配置表头header1为一级表头，header2为二级表头，被合并的单元格为空写占位符""：
// 如果导出前要处理数据，需要深克隆一份表格数据，然后进行处理
const exportTableData = JSON.parse(JSON.stringify(tableData));
const config = {
data: exportTableData,//exportTableData为表格数据，为空的话，导出表格只显示表头
fields: fields,
headers: header,
merges: merges,
attrs: [],
view: [],
columnsWidth: [20, 20, 20, 20, 20,20, 20,20, 20, 20, 20, 20,20, 20,20,20],//每行列的宽
// protect: {},
sheetName: "个人信息"
};
// 设置全表单元格边框，居中布局
config.attrs.push({
rowStart: 0,
rowEnd: config.data.length + 1,//表格表头多几层，就加几个
colStart: 0,
colEnd: config.fields.length - 1,
attr: {
alignment: { vertical: "middle", horizontal: "center" },
border: {
top: { style: "thin" },
left: { style: "thin" },
bottom: { style: "thin" },
right: { style: "thin" }
}
}
});
// 设置表头填充颜色，字体加粗
config.attrs.push({
rowStart: 0,
rowEnd: 1,//表格表头多几层，就写几
colStart: 0,
colEnd: config.fields.length - 1,
attr: {
fill: {
type: "pattern",
pattern: "solid",
fgColor: { argb: "c5c8ce" }
},
font: {
bold: true
}
}
});
return config;
}

复制代码