86 lines
2.6 KiB
JavaScript
86 lines
2.6 KiB
JavaScript
const env = require('./config.js'); //配置文件，在这文件里配置你的OSS keyId和KeySecret,timeout:87600;
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const base64 = require('./base64.js');//Base64,hmac,sha1,crypto相关算法
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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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/*
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*上传文件到阿里云oss
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*@param - filePath :图片的本地资源路径
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*@param - dir:表示要传到哪个目录下
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*@param - successc:成功回调
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*@param - failc:失败回调
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*/
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const uploadFile = function (filePath, dir, successc, failc) {
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if (!filePath || filePath.length < 9) {
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uni.showModal({
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title: '图片错误',
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content: '请重试',
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showCancel: false,
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})
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return;
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}
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//图片名字 可以自行定义， 这里是采用当前的时间戳 + 150内的随机数来给图片命名的
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const aliyunFileKey = dir + new Date().getTime() + Math.floor(Math.random() * 150) + '.png';
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const aliyunServerURL = env.uploadImageUrl;//OSS地址，需要https
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const accessid = env.OSSAccessKeyId;
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const policyBase64 = getPolicyBase64();
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const signature = getSignature(policyBase64);//获取签名
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uni.uploadFile({
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url: aliyunServerURL,//开发者服务器 url
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filePath: filePath,//要上传文件资源的路径
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name: 'file',//必须填file
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formData: {
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'key': aliyunFileKey,
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'policy': policyBase64,
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'OSSAccessKeyId': accessid,
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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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console.log(res,45);
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if (res.statusCode != 200) {
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failc(new Error('上传错误:' + JSON.stringify(res)))
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return;
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}
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successc(aliyunServerURL+'/'+aliyunFileKey);//成功后的路径
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},
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fail: function (err) {
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err.wxaddinfo = aliyunServerURL;
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failc(err);
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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
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"conditions": [
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["content-length-range", 0, 5 * 1024 * 1024] // 设置上传文件的大小限制,5mb
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]
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};
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const policyBase64 = base64.encode(JSON.stringify(policyText));
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console.log(policyBase64,71);
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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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console.log(signature,84);
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return signature;
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}
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module.exports = uploadFile; |