// 先在请求处加上：    
responseType: 'arraybuffer', // 指定响应类型为ArrayBuffer

 const data = new Uint8Array(response.data); // 将ArrayBuffer转换为Uint8Arrayconst val = { columns: [], data: [] }let offset = 0; // 用于跟踪当前解析到的位置while (offset < data.length) {// 确保当前偏移量可读取8个字节if (offset + 8 > data.length) {console.warn('字节数不足，无法读取偏移处的长度:', offset);break; // 不够数据，退出循环}// 获取前8个字节，计算包长度const lengthHex = String.fromCharCode.apply(null, data.slice(offset, offset + 8));const packLength = parseInt(lengthHex, 16); // 转换为十进制// 确保当前偏移量可读取完整的数据包if (offset + 8 + packLength > data.length) {console.warn('字节数不足，无法在偏移处读取数据包:', offset);break; // 不够数据，退出循环}// 使用TextDecoder来处理JSON内容const decoder = new TextDecoder('utf-8');const jsonBody = decoder.decode(data.slice(offset + 8, offset + 8 + packLength)); // 获取JSON内容// 解析并存储数据包try {const packetData = JSON.parse(jsonBody); // 解析JSONif (offset == 0) {val.columns = packetData.columns;}val.data.push(...packetData.data);} catch (error) {console.error('Error parsing JSON:', error, jsonBody);}// 更新偏移量offset += 8 + packLength; // 移动到下一个包的起始位置}// 现在 allPackets 包含所有解析后的数据包console.log('All parsed packets:', val);const worker = new Worker(new URL('./export-worker.ts', import.meta.url), { type: 'module' });worker.postMessage({ data: val });worker.onmessage = (e) => {if (e && e.data && e.data.t == "export") {e.stopPropagation();e.preventDefault();// data will be the Uint8Array from the workerconst res = e.data.v;downloadExcelFile(new Blob([res], { type: "application/octet-stream" }), row.TaskName + '-核查结果.xlsx');window.$message?.success('导出成功！');}operateLoading.value = false;worker.terminate(); // 终止 Worker};worker.onerror = (error) => {console.error('Worker error:', error);operateLoading.value = false;worker.terminate(); // 终止 Worker};

export-worker.ts

import * as XLSX_STYLE from 'xlsx-js-style';interface Column {name: string;headerText: string;
}interface Data {columns: Column[];data: any[][];
}interface ExportMessage {t: string;v: any;
}self.onmessage = async (event: MessageEvent) => {const { data }: { data: Data } = event.data;// 这里放置处理导出逻辑的代码const highlightFields: string[][] = [];const problemFieldsIndex: number = data.columns.findIndex(col => col.name === 'ProblemFields');// 移除 ProblemFields 字段if (problemFieldsIndex !== -1) {data.columns.splice(problemFieldsIndex, 1);}const formattedData = data.data.map((row: any[]) => {const problemFields = row[problemFieldsIndex];highlightFields.push(problemFields.split(','));row.splice(problemFieldsIndex, 1);// const rowData: { [key: string]: any } = {};// data.columns.forEach((col: Column, index: number) => {//   rowData[col.headerText] = row[index];// });return row;});const BATCH_SIZE = 30000; // 定义每批处理的数据大小// 添加标题行const header = data.columns.map(col => col.headerText);// 设置样式const headerCellStyle = {font: { name: 'Arial', sz: 10, bold: true, color: { rgb: "FFFFFF" } },  // 白色字体fill: { fgColor: { rgb: "808080" } }, // 灰色背景alignment: { vertical: 'center', horizontal: 'center' }};const cellStyle = {font: { name: 'Arial', sz: 10 },alignment: { vertical: 'center', horizontal: 'center', wrapText: true }};const highlightStyle = {fill: { fgColor: { rgb: "FFFF00" } }, // 黄色背景font: { name: '宋体', sz: 11 },alignment: { vertical: 'center', horizontal: 'center', wrapText: true },border: {top: { style: 'thin', color: { rgb: "C3CBDD" } },bottom: { style: 'thin', color: { rgb: "C3CBDD" } },left: { style: 'thin', color: { rgb: "C3CBDD" } },right: { style: 'thin', color: { rgb: "C3CBDD" } }}};const ws = [];for (let i = 0; i < formattedData.length; i += BATCH_SIZE) {const worksheet = XLSX_STYLE.utils.aoa_to_sheet([header], { origin: 'A1' }); // 创建一个空工作表const batchData = formattedData.slice(i, i + BATCH_SIZE);// 添加批量数据到工作表末尾XLSX_STYLE.utils.sheet_add_aoa(worksheet, batchData, { skipHeader: true, origin: -1 });// 设置列宽、行高和样式// 设置每列的宽度（单位：字符）const wsCols: { wch: number }[] = new Array(data.columns.length).fill({ wch: 30 });worksheet['!cols'] = wsCols;worksheet['!cols'][0] = { wch: 50 };// 设置行高（单位：像素，通常建议设置为 20 或更高）worksheet['!rows'] = new Array(batchData + 1).fill({ hpt: 50 });worksheet['!rows'][0] = { hpt: 25 };// 应用样式到表头和普通单元格for (const col in worksheet) {if (col[0] === '!') continue; // 跳过元数据const cell = worksheet[col];// 设置表头样式if (data.columns.some(header => header.headerText === cell.v)) {cell.s = headerCellStyle;} else {cell.s = cellStyle; // 设置普通单元格样式}}// 根据 ProblemFields 高亮单元格batchData.forEach((row, rowIndex) => {const globalRowIndex = i + rowIndex; // 计算全局行索引highlightFields[globalRowIndex].forEach(problemField => {const colIndex = data.columns.findIndex(col => col.name === problemField); // 找到对应的列索引if (colIndex !== -1) {const cellRef = XLSX_STYLE.utils.encode_cell({ c: colIndex, r: rowIndex + 1 }); // 行号加1因为第一行为表头if (worksheet[cellRef]) {worksheet[cellRef].s = highlightStyle; // 应用高亮样式}}});});ws.push(worksheet);}// const worksheet = XLSX_STYLE.utils.json_to_sheet(formattedData, { header: data.columns.map(col => col.headerText) });const workbook = XLSX_STYLE.utils.book_new();const min = formattedData.length > BATCH_SIZE ? BATCH_SIZE : formattedData.length;ws.forEach((worksheet: any) => {XLSX_STYLE.utils.book_append_sheet(workbook, worksheet);});console.log("准备写入")const val = XLSX_STYLE.write(workbook, { type: "array", bookType: "xlsx", bookSST: true, compression: true });console.log("写入完成")self.postMessage({ t: "export", v: val } as ExportMessage);
};