uniapp使用oss web直传 js加密上传视频

创建一个文件夹 utils，下面放一些文件 base64.js 、crypto.js、hmac.js、sha1.js、ossUtils等

代码分别是 base64.js

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 default Base64

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
 */

var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

// Global Crypto object
let 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 = {
    
    };

export default Crypto;

hmac.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
 */

import Crypto from './crypto.js';

(function() {
    
    

	// Shortcut
	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.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
 */
import Crypto from './crypto.js';

(function() {
    
    

	// 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;

})();

ossUtils.js

import Crypto from "./crypto.js"
import Base64 from "./base64.js";
import './hmac.js';
import './sha1.js';

//详细配置，请从oss配置中获取
let accessId = 'XXXXXXXXXXX';
let accesskey = 'XXXXXXXXXXX';
let host = 'http://xxxxxx.oss-cn-xxxx.aliyuncs.com';

var policyText = {
    
    
	"expiration": "2099-01-01T12:00:00.000Z", //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, 1024 * 1024 * 5] // 设置上传文件的大小限制
	]
};


var policyBase64 = Base64.encode(JSON.stringify(policyText))
let message = policyBase64

var bytes = Crypto.HMAC(Crypto.SHA1, message, accesskey, {
    
    
	asBytes: true
});
var signature = Crypto.util.bytesToBase64(bytes);



// 随机字符串  可以考虑使用uuid或者其他随机的，这个方法是写着玩的
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 {
    
    
	policy: policyBase64,
	signature,
	OSSAccessKeyId: accessId,
	host,
	random_string
}

uniapp页面中使用

import ossEncry from "../../common/lib/ossUtil.js"

methods:{
			// 选择视频
			handleChoodeVideo() {
				let _this = this;
				uni.chooseVideo({
					sourceType: ['camera', 'album'],
					success(res) {
						let name;
						// #ifdef APP-PLUS || MP-WEIXIN
						name = ossEncry.random_string(32) + _this.getFuffix(res.tempFilePath)
						// #endif
						// #ifdef H5
						name = ossEncry.random_string(32) + _this.getFuffix(res.name)
						// #endif
						
						uni.uploadFile({
							url: ossEncry.host,
							filePath: res.tempFilePath,
							fileType: 'video',
							name: 'file',
							formData: {
								name: name,
								key:`videos/${name}`,
								success_action_status: 200,
								policy: ossEncry.policy,
								OSSAccessKeyId: ossEncry.OSSAccessKeyId,
								signature: ossEncry.signature,
							},
							success: (res1) => {
								console.log(res1);
								//成功之后的操作
								let videoURL = `${ossEncry.host}/${name}`
								_this.videoURL = videoURL
							},
							fail: (err) => {
								console.log(err)
							}

						})
					}
				})
			},
}

uniapp 在真机上面测试，会出现403的问题

错误如下

{
      
      
	"data": "",
	"statusCode": 403,
	"errMsg": "uploadFile:ok"
}

解决方法如下 crypto.js 里面找到并注释

if (typeof btoa == "function") return btoa(util.bytesToString(bytes));

每个文件都做过一定性的修改，如果报错，请检查文件的一些方法是否导出，是否引用出错

uniapp使用oss web直传 js加密上传视频

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