说明：图片上传，没有经过后端（签名那些都没有）
第一步
//在src新建一个文件 config
var aliyunConfig = {
uploadImageUrl: 'https://××××.com/', // 默认存在根目录，可根据需求改
AccessKeySecret: '××××', // AccessKeySecret 去你的阿里云上控制台上找
OSSAccessKeyId: '××××', // AccessKeyId 去你的阿里云上控制台上找
timeout: 80000 //这个是上传文件时Policy的失效时间
}
export default {
...aliyunConfig
}
第二步
//在utils新建一个 uploadFile.js 图片上传阿里云的方法
import Config from "@/config/config.js"
const env = {
uploadImageUrl:Config.uploadImageUrl,
AccessKeySecret:Config.AccessKeySecret,
OSSAccessKeyId:Config.OSSAccessKeyId,
timeout:Config.timeout,
}
const {Base64} = require('../aliyun/base64.js');
const base64=Base64
require('../aliyun/hmac.js');
require('../aliyun/sha1.js');
// const Crypto = require('../aliyun/crypto.js');
import Crypto from '../aliyun/crypto.js';
/*
*上传文件到阿里云oss
*@param - filePath :图片的本地资源路径(临时)
*@param - dir:表示要传到哪个目录下
*@param - successc:成功回调
*@param - failc:失败回调
*@param - oldFile:原始图片路径，为了截图图片是什么格式
*/
const uploadFile = function (filePath, dir, successc, failc,oldFile) {
if (!filePath || filePath.length ==0) {
uni.showModal({
title: '图片错误',
content: '请重试',
showCancel: false,
})
return;
}
console.log('上传图片.....');
// 获取上传的文件类型
let fileTypeIndex = oldFile.lastIndexOf('.');
let fileType = oldFile.substring(fileTypeIndex);
// console.log(fileType,'oldFile---');
//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
// const aliyunFileKey = dir + new Date().getTime() + Math.floor(Math.random() * 150) + '.png';
const aliyunFileKey = dir + new Date().getTime() + Math.floor(Math.random() * 150) + fileType;
const aliyunServerURL = env.uploadImageUrl;//OSS地址，需要https
const accessid = env.OSSAccessKeyId;
const policyBase64 = getPolicyBase64();
const signature = getSignature(policyBase64);//获取签名
uni.uploadFile({
url: aliyunServerURL,//开发者服务器 url
filePath: filePath,//要上传文件资源的路径
name: 'file',//必须填file
formData: {
'key': aliyunFileKey,
'policy': policyBase64,//policyBase64
'OSSAccessKeyId': accessid,
'signature': signature,
'success_action_status': '200',
},
success: function (res) {
if (res.statusCode != 200) {
failc(new Error('上传错误:' + JSON.stringify(res)))
return;
}
let obj= {id:aliyunFileKey,path:aliyunServerURL+aliyunFileKey};//aliyunFileKey 这个是唯一的 所以作为唯一的id使用
console.log(obj);
successc(obj);
},
fail: function (err) {
err.wxaddinfo = aliyunServerURL;
failc(err);
},
})
}
const getPolicyBase64 = function () {
let date = new Date();
date.setHours(date.getHours() + env.timeout);
let srcT = date.toISOString();
const policyText = {
"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
"conditions": [
["content-length-range", 0, 5 * 1024 * 1024] // 设置上传文件的大小限制,5mb
]
};
const policyBase64 = base64.encode(JSON.stringify(policyText));
return policyBase64;
}
const getSignature = function (policyBase64) {
const accesskey = env.AccessKeySecret;
const bytes = Crypto.HMAC(Crypto.SHA1, policyBase64, accesskey, {
asBytes: true
});
const signature = Crypto.util.bytesToBase64(bytes);
return signature;
}
export default uploadFile;
第三步
//导入base64编码 以及解码 代码
//创建一个文件名 aliyun 下面放 base64.js hmac.js sha1.js crypto.js
base64.js
export 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;
}
}
hmac.js
import Crypto from '@/aliyun/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(){
// 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
import Crypto from '@/aliyun/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(){
// 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;
})();
crypto.js
var base64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
let Crypto = {};
var util = Crypto.util = {
rotl: function (n, b) {
return (n << b) | (n >>> (32 - b));
},
rotr: function (n, b) {
return (n << (32 - b)) | (n >>> b);
},
endian: function (n) {
if (n.constructor == Number) {
return util.rotl(n, 8) & 0x00FF00FF |
util.rotl(n, 24) & 0xFF00FF00;
}
for (var i = 0; i < n.length; i++)
n[i] = util.endian(n[i]);
return n;
},
randomBytes: function (n) {
for (var bytes = []; n > 0; n--)
bytes.push(Math.floor(Math.random() * 256));
return bytes;
},
stringToBytes: function (str) {
var bytes = [];
for (var i = 0; i < str.length; i++)
bytes.push(str.charCodeAt(i));
return bytes;
},
bytesToString: function (bytes) {
var str = [];
for (var i = 0; i < bytes.length; i++)
str.push(String.fromCharCode(bytes[i]));
return str.join("");
},
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;
},
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;
},
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;
},
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("");
},
hexToBytes: function (hex) {
var bytes = [];
for (var c = 0; c < hex.length; c += 2)
bytes.push(parseInt(hex.substr(c, 2), 16));
return bytes;
},
bytesToBase64: function (bytes) {
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;
}
}
if (overflow != undefined && overflow != -1)
base64.push(base64map.charAt(overflow));
while (base64.length % 4 != 0) base64.push("=");
return base64.join("");
},
base64ToBytes: function (base64) {
if (typeof atob == "function") return util.stringToBytes(atob(base64));
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 = {};
export default Crypto;
前端图片压缩
注释：阿里云，内存有限，进行图片压缩，手机拍照好的像素，可以十几M
//压缩图片
/*
*上传文件到阿里云oss
*@param - file:文件路径
*@param - callback:图片上传成功回调函数
*/
compressImage(file,callback){
uni.compressImage({
src: file,
quality: 50,
success: res => {
console.log(res.tempFilePath)
uploadFile(res.tempFilePath,'yqtb',callback,this.fail,file)
},
fail:fail=>{
//压缩失败，直接上传
uploadFile(file,'yqtb',callback,this.fail,file)
}
})
},
