阿里云 oss JavaScript客户端签名文件上传 vue2.0

官方文档地址

https://help.aliyun.com/document_detail/31925.html?spm=5176.doc31923.6.631.SAJk7p

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官方文档内给的demo是传统的代码引入方式，用到的模块有crypto、hmac、sha1、base64、plupload。这些模块都是定制化的，用npm安装指定的模块会出现相应的方法找不到未定义情况，所以想在vue2.0项目中使用oss上传，需要自己定义一个crypto方法，把hmac、sha1方法放到crypto对象中，base64方法是独立的，直接把demo中的文件放入项目中,用export default dao's'h

var base64map = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
var Crypto = {}
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 = []
var 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.HMAC = function (hasher, message, key, options) {
key = key.length > hasher._blocksize * 4 ? hasher(key, { asBytes: true }) : util.stringToBytes(key)
// XOR keys with pad constants
var okey = key
var 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)
}

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)
}
SHA1._sha1 = function (message) {
var m = util.stringToWords(message)
var l = message.length * 8
var w = []
var H0 = 1732584193
var H1 = -271733879
var H2 = -1732584194
var H3 = 271733878
var 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
var b = H1
var c = H2
var d = H3
var 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

export default Crypto

以上是crypto方法，这里需要注意的是，如果vue项目中用到了代码校验，这里的代码会有语法报错，仔细改掉就可以了

plupload模块直接用npm安装就好了，相应文档地址http://www.phpin.net/tools/plupload/

接下来就可以按照官方demo 进行相应的修改，配置自己的参数，进行上传测试

阅读原文 http://click.aliyun.com/m/35106/