uni-app 阿里云oss直传 采坑记录

阿里云oss官方 javascript直传案例https://help.aliyun.com/docum…前提一般开发需求上传文件用到的最多就是上传视频和图片了 uni-app 上传视频接口uni.chooseVideo()和上传图片接口uni.chooseImage() 在成功的回调success里面返回的参数里面tempFilePath，tempFilePaths 都表示文件的临时路径，只不过一个是字符串，一个是数组开发开发的时候，调试都是在chrome中完成的，在选择文件成功之后打印出的参数里面有文件的临时路径（浏览器中是blob地址）和文件大小 返回的参数没有文件类型和文件名，然而我需要随机生成文件名，这该咋办？于是我搜到一个方法 用uni.request()读取blob url地址，在成功返回的参数可以得到content-type，比如jpg图片image/jpeg，之后用MIME来对比找到文件扩展名就行了 使用uni.uploadFile()上传文件的时候formData参数里面key就传需要保存的文件路径+生成的随机字符串+文件扩展名ps:如果你要使用原文件名key的值就是 ‘${filename}’,当然前面可以加文件路径’path/’+’${filename}’。不过你上传以后会发现oss返回的Response并没有文件地址，而是什么都没有！天真的以为这样上传就没问题了，后来打包安卓app在上传文件的时候失败了，排查原因发现是在生成随机文件名时出现问题了问题原因就在上传视频接口uni.chooseVideo()和上传图片接口uni.chooseImage()返回的临时地址在各个平台表现并不一样，官方文档并没有说明，我在官方论坛提问建议了说下以下几3个平台：1.在h5端返回blob地址 e.g. blob:http://127.0.0.1:8080/9fb99ee3-b533-47a0-9917-04804731fb582.在app端（测试android，ios没测试，应该和Android一样的）返回文件存储地址 e.g. file:///storage/emulated/0/DCIM/image1.jpg3.微信小程序返回地址时服务器临时图片地址 e.g. http://tmp/wx1679d8dc40692733.o6zAJs4Evck8rMa6KlPZ4dGYI0Ps.t3jkFi3eZEG4475ab2f73a8289586958242bff38a925.jpg 微信里面上传到时oss失败，提示fail url not in domain list 应该要配置上传地址域名白名单吧随便一提我是用uni.showModal调试的，在app里面还是蛮管用的 uni.showModal({ title: ‘选择文件提示’, content: JSON.stringify(res), success: function (ret) { if (ret.confirm) { console.log(‘用户点击确定’); } else if (ret.cancel) { console.log(‘用户点击取消’); } } });代码下面是视频上传的代码，签名加密部分的js直接拷贝官方案列里面的，之后稍有修改，因为是import引入<view class=“uni-flex uni-row form-im” v-show=“pickerIndex === 1”> <view class=“flex-item uni-label label-ex label-start”>视频：</view> <view class=“flex-item ipt-wrap”> <view class=“uni-uploader__files”> <view class=“uni-uploader__input-box”> <view class=“uni-uploader__input” @tap=“chooseVideo”></view> <video class=“video-prev” v-if=“showVideo” :src=“videoSrc”></video> </view> </view> </view></view>crypto.js , hmac.js, sha1.js, base64.js 这几个引入的js都有修改，修改后的代码也会放在下面其实就是添加了export 和 import<script> import Crypto from ‘@/common/utils/crypto1/crypto/crypto.js’; import ‘@/common/utils/crypto1/hmac/hmac.js’; import ‘@/common/utils/crypto1/sha1/sha1.js’; import {Base64} from ‘@/common/utils/base64.js’; // oss 配置 var uploadFileSize = 10241024100; // 上传文件的大小限制100m var policyText = { “expiration”: “2022-01-01T12:00:00.000Z”, //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 “conditions”: [ [“content-length-range”, 0, uploadFileSize] // 设置上传文件的大小限制 ] }; var accessid = ‘’; var accesskey = ‘’; var osshost = ‘https://xxx.oss-cn-hangzhou.aliyuncs.com’; var policyBase64 = Base64.encode(JSON.stringify(policyText)); var message = policyBase64; var bytes = Crypto.HMAC(Crypto.SHA1, message, accesskey, { asBytes: true }) ; var signature = Crypto.util.bytesToBase64(bytes); var timetamp = new Date().getTime(); function random_string(len) { 　　len = len || 32; 　　var chars = ‘ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678’; 　　var maxPos = chars.length; 　　var pwd = ‘’; 　　for (let i = 0; i < len; i++) { 　　pwd += chars.charAt(Math.floor(Math.random() * maxPos)); } return pwd; } export default { data() { return { videoSrc: ‘’, showVideo: false, formData: { original: 0, type: 1, detail: ‘’, tags: ‘’, images: [], video: ’’ } }; }, methods: { chooseVideo(){ var self = this; uni.chooseVideo({ count: 1, sourceType: [‘camera’, ‘album’], success: function (res) { self.videoSrc = res.tempFilePath; if(res.size > uploadFileSize){ uni.showToast({ title: ‘文件大小超过系统上传限制：’ + uploadFileSize, icon: ’none’, duration: 1000 }); return; } let vieoType = ‘.jpg’; let videoTypesArr = [ { ext: ‘.mp4’, mime: ‘video/mp4’, }, { ext: ‘.ogg’, mime: ‘video/ogg’, }, { ext: ‘.3gp’, mime: ‘video/3gpp’, }, { ext: ‘.ogv’, mime: ‘video/ogg’, } ]; // #ifdef H5 uni.request({ url: self.videoSrc, responseType: ‘arraybuffer’, success(res){ let contType = res.header[‘content-type’]; console.log(contType); for (let i = 0; i < videoTypesArr.length; i++) { if(contType === videoTypesArr[i].mime){ vieoType = videoTypesArr[i].ext; } } // 上传文件 var stroeAs = ‘shixuan/video/’ + timetamp + random_string(5) + vieoType; self.fileUpload(‘video’, self.videoSrc, stroeAs); }, fail(err){ console.log(err) uni.showToast({ title: err, icon: ’none’, duration: 2000 }); } }); // #endif // #ifdef APP-PLUS || MP // app端直接读取的文件路径 let pos = self.videoSrc.lastIndexOf(’.’); let filename = self.videoSrc.substring(0, pos) // 文件名 let extendName = self.videoSrc.substring(pos + 1); // 扩展名 let stroeAs = ‘shixuan/video/’ + timetamp + random_string(5) +’.’+ extendName; self.fileUpload(‘video’, self.videoSrc, stroeAs); // #endif }, fail:()=>{ uni.showToast({ title: ‘取消选择视频’, icon: ’none’, duration: 2000 }); } }); }, // 文件上传 fileUpload(type, path, stroeAs){ let self = this; uni.showLoading({ title: ‘文件上传中’ }); uni.uploadFile({ url: osshost, filePath: path, fileType: type, name: ‘file’, formData:{ ‘key’: stroeAs, ‘policy’: policyBase64, ‘OSSAccessKeyId’: accessid, ‘success_action_status’: ‘200’, //让服务端返回200,不然，默认会返回204 ‘signature’: signature, }, success: (res) => { // console.log(‘uploadImage success, res is:’, res); uni.hideLoading(); uni.showToast({ title: ‘上传成功’, icon: ‘success’, duration: 1000 }); if(type === ‘image’){ self.imageList = self.imageList.concat(path); self.formData.images.push(osshost +’/’+ stroeAs); } if(type === ‘video’){ self.showVideo = true; self.formData.video = osshost +’/’+ stroeAs; } }, fail: (err) => { console.log(‘upload fail’, err); uni.hideLoading(); uni.showModal({ content: err.errMsg, showCancel: false }); } }); }, } }</script>crypto.js/*! * Crypto-JS v1.1.0 * http://code.google.com/p/crypto-js/ * Copyright (c) 2009, Jeff Mott. All rights reserved. * http://code.google.com/p/crypto-js/wiki/License /// (function(){var base64map = “ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/”;// Global Crypto object// window.Crypto = {};let Crypto = {};// Crypto utilitiesvar util = Crypto.util = { // Bit-wise rotate left rotl: function (n, b) { return (n << b) | (n >>> (32 - b)); }, // Bit-wise rotate right rotr: function (n, b) { return (n << (32 - b)) | (n >>> b); }, // Swap big-endian to little-endian and vice versa endian: function (n) { // If number given, swap endian if (n.constructor == Number) { return util.rotl(n, 8) & 0x00FF00FF | util.rotl(n, 24) & 0xFF00FF00; } // Else, assume array and swap all items for (var i = 0; i < n.length; i++) n[i] = util.endian(n[i]); return n; }, // Generate an array of any length of random bytes randomBytes: function (n) { for (var bytes = []; n > 0; n–) bytes.push(Math.floor(Math.random() * 256)); return bytes; }, // Convert a string to a byte array stringToBytes: function (str) { var bytes = []; for (var i = 0; i < str.length; i++) bytes.push(str.charCodeAt(i)); return bytes; }, // Convert a byte array to a string bytesToString: function (bytes) { var str = []; for (var i = 0; i < bytes.length; i++) str.push(String.fromCharCode(bytes[i])); return str.join(""); }, // Convert a string to big-endian 32-bit words stringToWords: function (str) { var words = []; for (var c = 0, b = 0; c < str.length; c++, b += 8) words[b >>> 5] |= str.charCodeAt(c) << (24 - b % 32); return words; }, // Convert a byte array to big-endian 32-bits words bytesToWords: function (bytes) { var words = []; for (var i = 0, b = 0; i < bytes.length; i++, b += 8) words[b >>> 5] |= bytes[i] << (24 - b % 32); return words; }, // Convert big-endian 32-bit words to a byte array wordsToBytes: function (words) { var bytes = []; for (var b = 0; b < words.length * 32; b += 8) bytes.push((words[b >>> 5] >>> (24 - b % 32)) & 0xFF); return bytes; }, // Convert a byte array to a hex string bytesToHex: function (bytes) { var hex = []; for (var i = 0; i < bytes.length; i++) { hex.push((bytes[i] >>> 4).toString(16)); hex.push((bytes[i] & 0xF).toString(16)); } return hex.join(""); }, // Convert a hex string to a byte array hexToBytes: function (hex) { var bytes = []; for (var c = 0; c < hex.length; c += 2) bytes.push(parseInt(hex.substr(c, 2), 16)); return bytes; }, // Convert a byte array to a base-64 string bytesToBase64: function (bytes) { // Use browser-native function if it exists if (typeof btoa == “function”) return btoa(util.bytesToString(bytes)); var base64 = [], overflow; for (var i = 0; i < bytes.length; i++) { switch (i % 3) { case 0: base64.push(base64map.charAt(bytes[i] >>> 2)); overflow = (bytes[i] & 0x3) << 4; break; case 1: base64.push(base64map.charAt(overflow | (bytes[i] >>> 4))); overflow = (bytes[i] & 0xF) << 2; break; case 2: base64.push(base64map.charAt(overflow | (bytes[i] >>> 6))); base64.push(base64map.charAt(bytes[i] & 0x3F)); overflow = -1; } } // Encode overflow bits, if there are any if (overflow != undefined && overflow != -1) base64.push(base64map.charAt(overflow)); // Add padding while (base64.length % 4 != 0) base64.push("="); return base64.join(""); }, // Convert a base-64 string to a byte array base64ToBytes: function (base64) { // Use browser-native function if it exists if (typeof atob == “function”) return util.stringToBytes(atob(base64)); // Remove non-base-64 characters base64 = base64.replace(/[^A-Z0-9+/]/ig, “”); var bytes = []; for (var i = 0; i < base64.length; i++) { switch (i % 4) { case 1: bytes.push((base64map.indexOf(base64.charAt(i - 1)) << 2) | (base64map.indexOf(base64.charAt(i)) >>> 4)); break; case 2: bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0xF) << 4) | (base64map.indexOf(base64.charAt(i)) >>> 2)); break; case 3: bytes.push(((base64map.indexOf(base64.charAt(i - 1)) & 0x3) << 6) | (base64map.indexOf(base64.charAt(i)))); break; } } return bytes; }};// Crypto mode namespaceCrypto.mode = {};// })();export default Crypto;hmac.jsimport Crypto from ‘@/common/utils/crypto1/crypto/crypto.js’;/! * Crypto-JS v1.1.0 * http://code.google.com/p/crypto-js/ * Copyright (c) 2009, Jeff Mott. All rights reserved. * http://code.google.com/p/crypto-js/wiki/License /(function(){// Shortcutvar util = Crypto.util;Crypto.HMAC = function (hasher, message, key, options) { // Allow arbitrary length keys key = key.length > hasher._blocksize * 4 ? hasher(key, { asBytes: true }) : util.stringToBytes(key); // XOR keys with pad constants var okey = key, ikey = key.slice(0); for (var i = 0; i < hasher._blocksize * 4; i++) { okey[i] ^= 0x5C; ikey[i] ^= 0x36; } var hmacbytes = hasher(util.bytesToString(okey) + hasher(util.bytesToString(ikey) + message, { asString: true }), { asBytes: true }); return options && options.asBytes ? hmacbytes : options && options.asString ? util.bytesToString(hmacbytes) : util.bytesToHex(hmacbytes);};})();sha1.jsimport Crypto from ‘@/common/utils/crypto1/crypto/crypto.js’;/! * Crypto-JS v1.1.0 * http://code.google.com/p/crypto-js/ * Copyright (c) 2009, Jeff Mott. All rights reserved. * http://code.google.com/p/crypto-js/wiki/License */(function(){// Shortcutvar util = Crypto.util;// Public APIvar SHA1 = Crypto.SHA1 = function (message, options) { var digestbytes = util.wordsToBytes(SHA1._sha1(message)); return options && options.asBytes ? digestbytes : options && options.asString ? util.bytesToString(digestbytes) : util.bytesToHex(digestbytes);};// The coreSHA1._sha1 = function (message) { var m = util.stringToWords(message), l = message.length * 8, w = [], H0 = 1732584193, H1 = -271733879, H2 = -1732584194, H3 = 271733878, H4 = -1009589776; // Padding m[l >> 5] |= 0x80 << (24 - l % 32); m[((l + 64 >>> 9) << 4) + 15] = l; for (var i = 0; i < m.length; i += 16) { var a = H0, b = H1, c = H2, d = H3, e = H4; for (var j = 0; j < 80; j++) { if (j < 16) w[j] = m[i + j]; else { var n = w[j-3] ^ w[j-8] ^ w[j-14] ^ w[j-16]; w[j] = (n << 1) | (n >>> 31); } var t = ((H0 << 5) | (H0 >>> 27)) + H4 + (w[j] >>> 0) + ( j < 20 ? (H1 & H2 | ~H1 & H3) + 1518500249 : j < 40 ? (H1 ^ H2 ^ H3) + 1859775393 : j < 60 ? (H1 & H2 | H1 & H3 | H2 & H3) - 1894007588 : (H1 ^ H2 ^ H3) - 899497514); H4 = H3; H3 = H2; H2 = (H1 << 30) | (H1 >>> 2); H1 = H0; H0 = t; } H0 += a; H1 += b; H2 += c; H3 += d; H4 += e; } return [H0, H1, H2, H3, H4];};// Package private blocksizeSHA1._blocksize = 16;})();base64.jsexport const Base64 = { // private property _keyStr : “ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=”, // public method for encoding encode : function (input) { var output = “”; var chr1, chr2, chr3, enc1, enc2, enc3, enc4; var i = 0; input = Base64._utf8_encode(input); while (i < input.length) { chr1 = input.charCodeAt(i++); chr2 = input.charCodeAt(i++); chr3 = input.charCodeAt(i++); enc1 = chr1 >> 2; enc2 = ((chr1 & 3) << 4) | (chr2 >> 4); enc3 = ((chr2 & 15) << 2) | (chr3 >> 6); enc4 = chr3 & 63; if (isNaN(chr2)) { enc3 = enc4 = 64; } else if (isNaN(chr3)) { enc4 = 64; } output = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4); } return output; }, // public method for decoding decode : function (input) { var output = “”; var chr1, chr2, chr3; var enc1, enc2, enc3, enc4; var i = 0; input = input.replace(/[^A-Za-z0-9+/=]/g, “”); while (i < input.length) { enc1 = this._keyStr.indexOf(input.charAt(i++)); enc2 = this._keyStr.indexOf(input.charAt(i++)); enc3 = this._keyStr.indexOf(input.charAt(i++)); enc4 = this._keyStr.indexOf(input.charAt(i++)); chr1 = (enc1 << 2) | (enc2 >> 4); chr2 = ((enc2 & 15) << 4) | (enc3 >> 2); chr3 = ((enc3 & 3) << 6) | enc4; output = output + String.fromCharCode(chr1); if (enc3 != 64) { output = output + String.fromCharCode(chr2); } if (enc4 != 64) { output = output + String.fromCharCode(chr3); } } output = Base64._utf8_decode(output); return output; }, // private method for UTF-8 encoding _utf8_encode : function (string) { string = string.replace(/\r\n/g,"\n"); var utftext = “”; for (var n = 0; n < string.length; n++) { var c = string.charCodeAt(n); if (c < 128) { utftext += String.fromCharCode(c); } else if((c > 127) && (c < 2048)) { utftext += String.fromCharCode((c >> 6) | 192); utftext += String.fromCharCode((c & 63) | 128); } else { utftext += String.fromCharCode((c >> 12) | 224); utftext += String.fromCharCode(((c >> 6) & 63) | 128); utftext += String.fromCharCode((c & 63) | 128); } } return utftext; }, // private method for UTF-8 decoding _utf8_decode : function (utftext) { var string = “”; var i = 0; var c = c1 = c2 = 0; while ( i < utftext.length ) { c = utftext.charCodeAt(i); if (c < 128) { string += String.fromCharCode(c); i++; } else if((c > 191) && (c < 224)) { c2 = utftext.charCodeAt(i+1); string += String.fromCharCode(((c & 31) << 6) | (c2 & 63)); i += 2; } else { c2 = utftext.charCodeAt(i+1); c3 = utftext.charCodeAt(i+2); string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)); i += 3; } } return string; } }