文章的更新路线：JavaScript基础知识-Vue2基础知识-Vue3基础知识-TypeScript基础知识-网络基础知识-浏览器基础知识-项目优化知识-项目实战经验-前端温习题（HTML基础知识和CSS基础知识已经更新完毕）
正文
前端web、h5实现方式
if (!res) return false
const blob = new Blob([res.data], { type: 'application/vnd.ms-excel' })
if (window.navigator.msSaveOrOpenBlob) {
navigator.msSaveBlob(blob, '数据分析.xlsx')
} else {
const link = document.createElement("a")
link.href = window.URL.createObjectURL(blob)
link.download = new Date().getTime()
// fix Firefox
const body = document.querySelector("body")
link.style.display = "none"
body.appendChild(link)
link.click()
body.removeChild(link)
window.URL.revokeObjectURL(link.href)
}
小程序实现方式
// videoContent流文件数据
const data = videoContent.result
// 创建ArrayBuffer对象
let ab = new ArrayBuffer(data.data.data.length)
// 创建TypedArray对象并装载ArrayBuffer
let bufferView = new Uint8Array(ab)
// 遍历接收ArrayBuffer对象中的原始数据
// for (let i = 0; i < data.data.data.length; ++i) {
// bufferView[i] = data.data.data[i]
// }
// 同上面for循环实现的结果
bufferView.set(data.data.data)
// 获取全局文件管理对象，微信小程序使用wx.getFileSystemManager()
const fs = uni.getFileSystemManager()
// 声明本地缓存地址
const sourceURI = uni.env.USER_DATA_PATH + '/' + new Date().getTime() + '.mp4'
// 将内容写入本地地址内存中
let that = this
fs.writeFile({
filePath: sourceURI,
data: bufferView.buffer,
encoding: 'utf8',
success: function(res) {
that.realUrl = sourceURI
},
fail: function(error) {
console.log(error)
}
})
MIME TYPE
文件后缀 MIME TYPE
.doc application/msword
.dot application/msword
.docx application/vnd.openxmlformats-officedocument.wordprocessingml.document
.dotx application/vnd.openxmlformats-officedocument.wordprocessingml.template
.docm application/vnd.ms-word.document.macroEnabled.12
.dotm application/vnd.ms-word.template.macroEnabled.12
.xls application/vnd.ms-excel
.xlt application/vnd.ms-excel
.xla application/vnd.ms-excel
.xlsx application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
.xltx application/vnd.openxmlformats-officedocument.spreadsheetml.template
.xlsm application/vnd.ms-excel.sheet.macroEnabled.12
.xltm application/vnd.ms-excel.template.macroEnabled.12
.xlam application/vnd.ms-excel.addin.macroEnabled.12
.xlsb application/vnd.ms-excel.sheet.binary.macroEnabled.12
.ppt application/vnd.ms-powerpoint
.pot application/vnd.ms-powerpoint
.pps application/vnd.ms-powerpoint
.ppa application/vnd.ms-powerpoint
.pptx application/vnd.openxmlformats-officedocument.presentationml.presentation
.potx application/vnd.openxmlformats-officedocument.presentationml.template
.ppsx application/vnd.openxmlformats-officedocument.presentationml.slideshow
.ppam application/vnd.ms-powerpoint.addin.macroEnabled.12
.pptm application/vnd.ms-powerpoint.presentation.macroEnabled.12
.potm application/vnd.ms-powerpoint.presentation.macroEnabled.12
.ppsm application/vnd.ms-powerpoint.slideshow.macroEnabled.12
.zip application/zip
.tar application/x-tar
结束语
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