如何下载jsreports core生成的大文件

const https = require('https');
const fs = require('fs');

const options = {
  hostname: 'localhost', // 替换为你的jsreports服务器地址
  port: 5488, // 替换为你的jsreports服务器端口
  path: '/api/reports/:reportId/download', // 替换为你的报告ID
  method: 'GET',
  headers: {
    'Authorization': 'Basic ' + Buffer.from('username:password').toString('base64') // 替换为你的用户名和密码
  }
};

const req = https.request(options, (res) => {
  const filePath = './excels/my_report.xlsx'; // 替换为你希望保存文件的路径
  const fileStream = fs.createWriteStream(filePath);

  res.pipe(fileStream);

  fileStream.on('finish', () => {
    fileStream.close();
    console.log('File downloaded successfully.');
  });
});

req.on('error', (error) => {
  console.error('Error downloading file:', error);
});

req.end();

const jsreports = require('jsreports-core');

const report = {
  template: { content: 'your_template.html', engine: 'handlebars' },
  data: { /* your data */ },
  options: {
    excel: {
      pageSize: 'A4',
      pageOrientation: 'landscape',
      fileName: 'my_report.xlsx',
      timeout: 600000 // 增加超时时间以处理大文件
    }
  }
};

jsreports.renderAsync(report).then((response) => {
  const fileUrl = response.downloadUrl;
  console.log('File downloaded successfully:', fileUrl);
}).catch((error) => {
  console.error('Error rendering report:', error);
});

const jsreports = require('jsreports-core');
const fs = require('fs');

const report = {
  template: { content: 'your_template.html', engine: 'handlebars' },
  data: { /* your data */ },
  options: {
    excel: {
      pageSize: 'A4',
      pageOrientation: 'landscape',
      fileName: 'my_report.xlsx',
      timeout: 600000 // 增加超时时间以处理大文件
    }
  }
};

jsreports.renderAsync(report).then((response) => {
  const fileStream = fs.createWriteStream('./excels/my_report.xlsx');
  response.stream.pipe(fileStream);

  fileStream.on('finish', () => {
    console.log('File downloaded successfully.');
  });
}).catch((error) => {
  console.error('Error rendering report:', error);
});