75 lines
2.1 KiB
JavaScript
75 lines
2.1 KiB
JavaScript
const env = {
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aliyunServerURL: 'https://czg-oss.oss-cn-beijing.aliyuncs.com',
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accessid: 'LTAI5tMLHwnM1zYYAFuRa1fK',
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AccessKeySecret: 'jS1h2STq1vcODczDNFQkjcU6ODyYAj',
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timeout: 100000
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}
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const Base64 = require('./Base64.js');
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require('./hmac.js');
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require('./sha1.js');
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const Crypto = require('./crypto.js');
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const uploadFile = function(filePath, key = new Date().getTime()) {
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return new Promise((resolve, reject) => {
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// const aliyunFileKey = `${new Date().getTime()}_${userId}`;
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const aliyunServerURL = env.aliyunServerURL;
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const accessid = env.accessid;
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const policyBase64 = getPolicyBase64();
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const signature = getSignature(policyBase64);
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wx.uploadFile({
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url: aliyunServerURL, //仅为示例，非真实的接口地址
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filePath: filePath,
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name: 'file',
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formData: {
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'key': 'headportrait/' + key,
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'OSSAccessKeyId': accessid,
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'policy': policyBase64,
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'Signature': signature,
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'success_action_status': '200',
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},
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success: function(res) {
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if (res.statusCode != 200) {
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reject('上传错误:' + JSON.stringify(res))
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return;
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}
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resolve(`https://czh5.sxczgkj.cn/headportrait/${key}`)
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},
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fail: function(err) {
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reject('上传错误:' + JSON.stringify(err))
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}
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})
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})
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}
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const getPolicyBase64 = function() {
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let date = new Date();
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date.setHours(date.getHours() + env.timeout);
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let srcT = date.toISOString();
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const policyText = {
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"expiration": srcT, //设置该Policy的失效时间，超过这个失效时间之后，就没有办法通过这个policy上传文件了 指定了Post请求必须发生在2020年01月01日12点之前("2020-01-01T12:00:00.000Z")。
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"conditions": [
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["content-length-range", 0, 20 * 1024 * 1024] // 设置上传文件的大小限制,1048576000=1000mb
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]
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};
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const policyBase64 = Base64.encode(JSON.stringify(policyText));
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return policyBase64;
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}
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const getSignature = function(policyBase64) {
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const accesskey = env.AccessKeySecret;
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const bytes = Crypto.HMAC(Crypto.SHA1, policyBase64, accesskey, {
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asBytes: true
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});
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const signature = Crypto.util.bytesToBase64(bytes);
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return signature;
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}
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module.exports = uploadFile;
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