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74 lines
1.8 KiB
74 lines
1.8 KiB
type DownloadPercent = {
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url: string
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option?: object
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onprocess?: (now: number, all: number) => void
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onsuccess?: (data: any) => void
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onerror?: (res: Response) => void
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}
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const RequestPercent = async ({
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url = "",
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option = {
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headers: {
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responseType: "arraybuffer",
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},
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},
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onsuccess,
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onerror,
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onprocess,
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}: DownloadPercent) => {
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const response = (await fetch(url, option)) as any
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if (!response.ok) {
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onerror?.(response)
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throw new Error(`下载失败`)
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}
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const reader = response?.body.getReader()
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// 文件总长度
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const contentLength = +response.headers.get("content-length")
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let receivedLength = 0
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const chunks: any[] = []
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// eslint-disable-next-line no-constant-condition
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while (true) {
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const { done, value } = await reader.read()
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if (done) {
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break
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}
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chunks.push(value)
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receivedLength += value.length
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onprocess?.(receivedLength, contentLength)
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}
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// 这里的chunksAll 已经是ArrayBuffer的数据类型了，可以直接返回，也可以转为blob处理
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const chunksAll = new Uint8Array(receivedLength)
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let position = 0
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for (const chunk of chunks) {
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chunksAll.set(chunk, position)
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position += chunk.length
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}
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onsuccess?.(chunksAll)
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return chunksAll
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}
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export { RequestPercent }
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export default RequestPercent
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// RequestPercent({
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// url: "http://117.21.250.136:9812/ZxqyGateway/biz/file/downApk/%E6%98%93%E4%BC%81%E6%95%B0%E8%BD%AC%E5%B9%B3%E5%8F%B0app-1.2.7.apk",
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// option: {
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// headers: {
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// responseType: "arraybuffer",
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// },
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// },
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// onerror: () => {},
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// onsuccess: data => {
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// fs.writeFileSync("./aaa.apk", Buffer.from(data))
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// console.log("success", data)
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// },
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// onprocess: (receivedLength, contentLength) => {
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// console.log(receivedLength, contentLength)
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// },
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// })
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