69 lines
2.1 KiB
JavaScript
69 lines
2.1 KiB
JavaScript
import { Base64 } from './base64.js'
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import { util } from './crypto.js'
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import { HMAC } from './hmac.js'
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import { SHA1 } from './sha1.js'
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// 下面这3个信息必填
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export const OSSUrl = 'https://zjeloong.oss-cn-hangzhou.aliyuncs.com/'
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const OSSAccessKeyId = 'LTAI5tEo7FnNzc6ubbEdXhn8'
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const OssAccesskeySercet= '8xdKsFQSwQXSXHMsU7vCmpxcXIt3dr';
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const policyText = {
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"expiration": "2034-01-01T12:00:00.000Z", // 设置Policy的有效期，格式为UTC时间。如果Policy失效，将无法上传文件。
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"conditions": [
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["content-length-range", 0, 1048576000] // 限制上传文件的大小，单位为字节，此处限制文件大小为1 GB。如果上传的文件大小超过此限制，文件将无法上传到OSS。如果未设置该限制，则默认文件大小最大为5 GB。
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]
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}
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const policy = Base64.encode(JSON.stringify(policyText))
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const bytes = HMAC(SHA1, policy, OssAccesskeySercet, { asBytes: true })
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const signature = util.bytesToBase64(bytes)
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// 生成文件名随机字符串
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function random_string(len) {
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const strLeng = len || 32;
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const chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
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const maxPos = chars.length;
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let pwd = '';
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for (let i = 0; i < strLeng; i++) {
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pwd += chars.charAt(Math.floor(Math.random() * maxPos));
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}
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return pwd;
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}
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// 获取文件后缀
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function get_suffix(filename) {
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const pos = filename.lastIndexOf('.')
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let suffix = ''
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if (pos != -1) {
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suffix = filename.substring(pos)
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}
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return suffix;
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}
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// dir格式：'img/'
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export const ossUpload = (filePath, name, dir) => {
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const key = dir + random_string(10) + get_suffix(name)
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return new Promise((resolve, reject) => {
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uni.uploadFile({
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url: OSSUrl,
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filePath,
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name: 'file',
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formData: {
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name,
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key,
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policy,
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OSSAccessKeyId,
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success_action_status: '200',
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signature
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},
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success: () => {
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resolve({success: true, data: OSSUrl + key})
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},
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fail: () => {
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reject({success: false, data: '上传失败'})
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}
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})
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})
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}
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