admin-sjzx/src/utils/fileDownLoad.ts

import { downloadFile } from '@/api/system-boot/file'
// 下载文件
export const download = (urls: any) => {
    console.log('下载',urls)
    downloadFile({ filePath: urls }).then((res: any) => {
        let blob = new Blob([res], {
            type: urls.includes('.pdf')
                ? 'application/pdf'
                : urls.includes('.zip')
                ? 'application/zip'
                : urls.includes('.doc')
                ? 'application/msword'
                : urls.includes('.docx')
                ? 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
                : urls.includes('.xls')
                ? 'application/vnd.ms-excel'
                : urls.includes('.xlsx')
                ? 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
                : urls.includes('.png')
                ? 'image/png'
                : urls.includes('.jpeg')
                ? 'image/jpeg'
                : urls.includes('.jpg')
                ? 'image/jpg'
                : ''
        })
        const url = window.URL.createObjectURL(blob)
        const link = document.createElement('a')
        let name = removeLastDotSuffix(urls.split('/')[2])
        link.href = url
        link.download = name
        document.body.appendChild(link)
        link.click()
        link.remove()
    })
}
function removeLastDotSuffix(str: string) {
    // 找到最后一个 . 的位置
    const lastDotIndex = str.lastIndexOf('.')
    // 如果存在 .，截取到 . 之前的部分；否则返回原字符串
    return lastDotIndex !== -1 ? str.slice(0, lastDotIndex) : str
}


// 预览文件
export const previewFile = async (urls: any) => {
    console.log('预览',urls)
    let url = ''
    await downloadFile({ filePath: urls }).then((res: any) => {
        let blob = new Blob([res], {
            type: urls.includes('.pdf')
                ? 'application/pdf'
                : urls.includes('.zip')
                ? 'application/zip'
                : urls.includes('.doc')
                ? 'application/msword'
                : urls.includes('.docx')
                ? 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
                : urls.includes('.xls')
                ? 'application/vnd.ms-excel'
                : urls.includes('.xlsx')
                ? 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
                : urls.includes('.png')
                ? 'image/png'
                : urls.includes('.jpeg')
                ? 'image/jpeg'
                : urls.includes('.jpg')
                ? 'image/jpg'
                : ''
        })
        url = window.URL.createObjectURL(blob)
    })
    console.log('url',url)
    return url
}