Node.js使用xlsx库读取Excel并处理合并单元格

npm install xlsx lodash

const xlsx = require('xlsx');
const path = require('path');

​​​​​​​const filePath = path.join(__dirname, 'YD-TP2025-03-22.xlsx');
const workbook = xlsx.readFile(filePath);

const sheetName = "建设全流程明细";
const sheet = workbook.Sheets[sheetName];

const merges = sheet['!merges'] || [];

function getMergedCellValue(sheet, row, col) {
    for (const merge of merges) {
        const { s, e } = merge; // s: 合并区域的起始位置，e: 合并区域的结束位置
        if (row >= s.r && row <= e.r && col >= s.c && col <= e.c) {
            return sheet[xlsx.utils.encode_cell(s)]?.v;
        }
    }
    return sheet[xlsx.utils.encode_cell({ r: row, c: col })]?.v;
}

const headerTemplates = [];
const rowIndex = 3; // 第 4 行的索引（从 0 开始）
const range = xlsx.utils.decode_range(sheet['!ref']);

for (let col = range.s.c; col <= range.e.c; col++) {
    const cellValue = getMergedCellValue(sheet, rowIndex, col);
    if (cellValue) {
        const address = xlsx.utils.encode_cell({ r: rowIndex, c: col }) + '';
        headerTemplates.push({
            address: address,
            value: removeTabsAndNewlines(cellValue),
            col: col + 1  // Excel 列从 1 开始计数
        });
    }
}

console.log(JSON.stringify(headerTemplates, null, 2));

[Running] node "c:\Users\xiong\WebstormProjects\backendnodejs\src\models\scripts\tempCodeRunnerFile.js"
[
  {
    "address": "A4",
    "value": "序号",
    "col": 1
  },
  {
    "address": "B4",
    "value": "区县",
    "col": 2
  },
  {
    "address": "C4",
    "value": "线下收到需求时间（以邮件为准等书面通知为准）",
    "col": 3
  },
  {
    "address": "D4",
    "value": "订单编号",
    "col": 4
  },
  {
    "address": "E4",
    "value": "未进系统原因",
    "col": 5
  },
  {
    "address": "F4",
    "value": "年份",
    "col": 6
  },
  {
    "address": "G4",
    "value": "运营商",
    "col": 7
  },

const xlsx = require('xlsx');
const path = require('path');

// 读取 Excel 文件
const filePath = path.join(__dirname, 'YD-TP2025-03-22.xlsx');
const workbook = xlsx.readFile(filePath);

// 获取名为 "建设全流程明细" 的工作表
const sheetName = "建设全流程明细";
const sheet = workbook.Sheets[sheetName];

// 获取工作表的合并单元格信息
const merges = sheet['!merges'] || [];

// 定义一个函数，用于获取合并单元格的值
function getMergedCellValue(sheet, row, col) {
    for (const merge of merges) {
        const { s, e } = merge;
        if (row >= s.r && row <= e.r && col >= s.c && col <= e.c) {
            return sheet[xlsx.utils.encode_cell(s)]?.v;
        }
    }
    return sheet[xlsx.utils.encode_cell({ r: row, c: col })]?.v;
}

// 获取表头数据（第 4 行）
const headerRow = [];
const headerRowIndex = 3; // 第 4 行的索引（从 0 开始）
const range = xlsx.utils.decode_range(sheet['!ref']);

// 获取表头
for (let col = range.s.c; col <= range.e.c; col++) {
    const cellValue = getMergedCellValue(sheet, headerRowIndex, col);
    headerRow.push(cellValue || '');
}

// 将数据转换为列表
const dataList = [];

// 从第5行开始读取数据（索引4）
for (let row = headerRowIndex + 1; row <= range.e.r; row++) {
    const rowData = {};
    
    // 遍历每一列
    for (let col = range.s.c; col <= range.e.c; col++) {
        const cellValue = getMergedCellValue(sheet, row, col);
        // 使用表头作为键名
        rowData[headerRow[col]] = cellValue || '';
    }
    
    dataList.push(rowData);
}

// 输出前5条数据作为示例
console.log('数据总条数:', dataList.length);
console.log('前5条数据示例:');
console.log(JSON.stringify(dataList.slice(5, 25), null, 2));