引入插件
import * as XLSX from "xlsx/xlsx.mjs";
import { read, utils } from 'xlsx/xlsx.mjs';上传文件方法
// 上传文件状态改变时的钩子，添加文件、上传成功和上传失败时都会被调用
async handle(ev) {
//改变表格key值
this.$refs.cpkTable.loading = true;
this.$refs.cpkLine.myChart.showLoading({
text: "加载中...",
color: "#1890ff",
textColor: "#1890ff",
showSpinner: false,
maskColor: "rgba(255, 255, 255, 0.7)",});
this.tableKey = true;
this.file = ev.raw;
this.excelName = this.file.name;
//截取表格文件名
this.excelName = this.excelName.substring(
0,
this.excelName.lastIndexOf(".")
);
console.log("上传的未解析源文件", this.file);
if (!this.file) {
console.log("文件打开失败");
return;
} else {
//<!-- 用来解析表头的代码-->
// let data = await this.readFile(file);
// let workbook = XLSX.read(data, { type: "binary" }); //解析二进制格式数据
// console.log("二进制数据的解析:", workbook);
// let worksheet = workbook.Sheets[workbook.SheetNames[0]]; //获取第一个Sheet
// // 调用解析表头方法
// this.getHeader(worksheet);
// let result = XLSX.utils.sheet_to_json(worksheet); //转换为json数据格式
// console.log("最终解析的 json 格式数据:", result);
// this.tableData = result;
// // 调用处理表头函数
// this.setTable();
//<!-- 用来解析表头的代码-->
// 读取 Excel 文件
//<!-- 不需要解析表头的代码-->
const file = this.file;
const reader = new FileReader();
const that = this
reader.onload = function(e) {
const data = new Uint8Array(e.target.result);
const workbook = read(data, { type: 'array' });
const sheetName = workbook.SheetNames[0];
const worksheet = workbook.Sheets[sheetName];
const jsonData = utils.sheet_to_json(worksheet, { header: 1, raw: false, defval: '' });
// const worksheet = workbook.Sheets[workbook.SheetNames[0]];
// const jsonData = XLSX.utils.sheet_to_json(worksheet, { header: 1 });
that.tableData = jsonData
that.lineData = jsonData
// 在这里处理读取到的数据
};
reader.readAsArrayBuffer(file);
that.fileOpen = false
that.$refs.cpkLine.lineData = this.tableData;
that.LSL = this.form.lsl
that.MBZ = this.form.targetValue
that.USL = this.form.usl
setTimeout(()=>{
that.$message.success(this.excelName+'导入成功')
that.$refs.upload.clearFiles();
that.$refs.cpkTable.loading = false;
that.$refs.cpkLine.myChart.hideLoading();
},800)
// that.tableLength = that.tableData.length
// this.setTable()
//<!-- 不需要解析表头的代码-->
}
},解析获取到表头的数据
getHeader(sheet) {
// const XLSX = XLSX;
const headers = [];
const range = XLSX.utils.decode_range(sheet["!ref"]); // worksheet['!ref'] 是工作表的有效范围
let C;
/* 获取单元格值 start in the first row */
const R = range.s.r; // 行 // C 列
let i = 0;
for (C = range.s.c; C <= range.e.c; ++C) {
var cell =
sheet[
XLSX.utils.encode_cell({ c: C, r: R })
]; /* 根据地址得到单元格的值find the cell in the first row */
var hdr = "UNKNOWN" + C; // 如果有空表头，会替换为您想要的默认值replace with your desired default
// XLSX.utils.format_cell 生成单元格文本值
if (cell && cell.t) hdr = XLSX.utils.format_cell(cell);
if (hdr.indexOf("UNKNOWN") > -1) {
if (!i) {
hdr = "__EMPTY";
} else {
hdr = "__EMPTY_" + i;
}
i++;
}
headers.push(hdr);
}
// 保存至data中
this.excelHeader = headers;
return headers;
},设置中英文映射 就是字段对应
// 设置表格中英文映射
setTable() {
const headers = this.excelHeader;
const excellist = this.tableData;
const tableTitleData = []; // 存储表格表头数据
const tableMapTitle = {}; // 设置表格内容中英文对照用
headers.forEach((_, i) => {
tableMapTitle[_] = "cord" + i;
tableTitleData.push({
prop: "cord" + i,
label: _,
width: 100,
});
});
console.log("表格头标题：", tableTitleData);
// 映射表格内容属性名为英文
const newTableData = [];
excellist.forEach((_) => {
const newObj = {};
Object.keys(_).forEach((key) => {
newObj[tableMapTitle[key]] = _[key];
});
newTableData.push(newObj);
});
this.tableColumn = tableTitleData;
this.tableData = newTableData;
},