文件下载适用于大部分主流前端框架

// 下载模板
export const downloadFile = (url: string, params: any) => {
  const baseURL = '' // 公共路径
  return new Promise(async (resolve, reject) => {
    if (url) {
      // 创建iframe下载
      const argument = {
        ...params,
        'X-Token': ''
      }
      const iframe = document.createElement('iframe')
      iframe.src = `${baseURL}${url}${await serialize(argument)}`
      iframe.style.display = 'none'
      document.body.appendChild(iframe)
      console.log(iframe.src, 'iframe.src')
      resolve(iframe.src)
    } else {
      reject()
    }
  })
}

// 序列化结构
const serialize = (data: any) => {
  let str = ''
  for (const key in data) {
    if (data[key] !== undefined && data[key] !== null && data[key] !== '') {
      if (data.hasOwnProperty(key)) {
        str += `${key}=${data[key]}&`
      }
    }
  }
  return str ? `?${str.substring(0, str.length - 1)}` : str
}```