uniapp app直接上传文件到阿里云oss中完整案例
襄阳网站定制开发公司分享uniapp app直接上传文件到阿里云oss中完整案例
创建签名文件
common/bundle.js
//bundle.js var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; // Global Crypto object var Crypto = {}; // Crypto utilities var 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 namespace Crypto.mode = {}; //hmac var 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 // Shortcut var util = Crypto.util; // Public API var 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 core SHA1._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 blocksize SHA1._blocksize = 16; //base64 var 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; } } export {Crypto, Base64}
封装上传文件
创建上传文件
common/common.js
import { Crypto, Base64 } from './bundle.js'; //引入上面的代码 export const alUploadImage = function(path, showLoading = true) { return new Promise((resolve, reject) => { let date = new Date(new Date().getTime() + 1000 * 3600); let expiration = date.toISOString(); //let expiration = date.getFullYear()+'-'+(date.getMonth()+1)+'-'+date.getDate()+'T'+date.getHours()+':'+date.getMinutes()+':00.000Z'; let policyText = { expiration, //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, 1048576000] // 设置上传文件的大小限制 ] }; let bucketName = ''; //你的bucketName let policyBase64 = Base64.encode(JSON.stringify(policyText)) let accessid = ''; //你的阿里oss accessid let accesskey = ''; //你的阿里oss secret let host = 'http://' + bucketName + '.oss-cn-zhangjiakou.aliyuncs.com'; //上传oss地址,注意地区对不对,我这示例给的是shanghai let bytes = Crypto.HMAC(Crypto.SHA1, policyBase64, accesskey, { asBytes: true }); let signature = Crypto.util.bytesToBase64(bytes); //签名 // 在阿里云存储路径=>文件地址,地址根据公司或本人要求生成,下方仅为示例 // 截取年月日部分 var now = new Date().toISOString(); var yearMonthDate = now.split('T')[0]; const timestamp = new Date().getTime(); let fileName = 'App/' + yearMonthDate+'/'+ timestamp+'.' + path .split('.').pop(); //文件名 注意:相同文件名会覆盖之前的文件 if (showLoading) uni.showLoading({ mask: true, title: '上传中..' }) uni.uploadFile({ url: host, filePath: path, fileType: '', name: 'file', formData: { name: fileName, key: fileName, //文件名 policy: policyBase64, // 输入你获取的的policy OSSAccessKeyId: accessid, // 输入你的AccessKeyId success_action_status: '200', // 让服务端返回200,不然,默认会返回204 signature, // 输入你获取的的signature }, success: (res) => { if (showLoading) uni.hideLoading() res.file = host + '/' + fileName resolve(res) }, fail: (res) => { if (showLoading) uni.hideLoading() reject(false) } }) }) }
main.js 设置全局引用
import { alUploadImage } from 'common/data/common.js' Vue.prototype.$alUploadImage = alUploadImage
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