项目采用的是 阿里云oss js签名直传的方式。示例代码如下：
1、上传图片
<template>
<view class="zyby-img-upload-common auth-img-item" :class="{'img-item-special': !imgUrl}">
<div v-if="!imgUrl" @tap="ChooseImage" class='flex-perfect-center'>
<slot name="image">
<image src="/static/img/btn_data_upload.png"></image>
</slot>
<div class="text-desc">
<slot>上传图片</slot>
</div>
</div>
<img class="exist-img" v-else :src="imgUrl" @tap="ChooseImage">
<!-- <progress class="upload-progress" v-if="progress > 0" :percent="progress" active stroke-width="3"></progress> -->
<img class="img-delete" v-if="imgUrl && deleteFlag" src="/static/icon_img/icn_delete.png" @tap="DelImg">
</view>
</template>
<script>
import OSSUtil from '../libs/ossUtil.js'
export default {
name: 'byImgUpload',
props: {
authId: String,
imgUrl: String,
deleteFlag: Boolean,
startShowAction: Function,
startDelete: Function,
imgActions: Array
},
data() {
return {
progress: 0,
imgData: {
visible: false,
actions: this.imgActions
}
}
},
methods: {
async ChooseImage() {
let files = await OSSUtil.getImage(); // 选择图片
let sign = await OSSUtil.get_STS() // 获取签名等信息
let imageSrc = files.tempFilePaths[0];
let fileName = OSSUtil.getFileName(imageSrc); // 自定义上传后的文件名称
let uploadTask = uni.uploadFile({
url: sign.host,
filePath: imageSrc,
fileType: 'image',
name: 'file',
formData: {
name: imageSrc,
'key': fileName,
'policy': sign.policy,
'OSSAccessKeyId': sign.accessId,
'success_action_status': '200',
//让服务端返回200,不然，默认会返回204
'signature': sign.signature,
},
success: (res) => {
console.log('uploadImage success, res is:', res)
uni.showToast({
title: '上传成功',
icon: 'success',
duration: 1000
});
this.$emit('imgUploaded', {data: sign.host + fileName, authId: this.authId});
},
fail: (err) => {
console.log('uploadImage fail', err);
uni.showModal({
content: err.errMsg,
showCancel: false
});
}
});
uploadTask.onProgressUpdate((res) => {
console.log("上传进度" + res.progress);
this.progress = res.progress;
});
// this.$emit('imgUploaded', {data: files.tempFilePaths[0], authId: this.authId});
},
ViewImage(e) {
uni.previewImage({
urls: this.imgList,
current: e.currentTarget.dataset.url
});
},
DelImg() {
this.$emit('imgDel', {
authId: this.authId
});
},
}
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped lang="less" rel="stylesheet/less">
@import "../style/function.less";
@import "../style/variable.less";
.zyby-img-upload-common {
height: 450rpx;
100%;
margin-top: 26rpx;
}
.auth-img-item {
position: relative;
>div:first-child {
height: 100%;
flex-direction: column;
image {
.square-hw(46)
}
.text-desc {
margin-top: 20rpx;
font-family: PingFangSC-Regular;
font-size: 26rpx;
color: @base-finish-color-deep;
}
}
.exist-img {
100%;
height: 100%;
}
.upload-progress {
position: absolute;
bottom: 0;
right: 0;
left: 0;
}
.img-delete {
.square-hw(36);
position: absolute;
top: 10rpx;
right: 10rpx;
}
}
.img-item-special {
border: 1px dashed #13DBBF;
/*no*/
border-radius: 6rpx;
/*no*/
}
</style>
2、相关代码
// ossUtil.js
import Crypto from '@/libs/crypto/crypto.js'; import '@/libs/crypto/hmac.js'; import '@/libs/crypto/sha1.js'; import { Base64 } from '@/libs/crypto/base64.js'; import config from '@/config/index.js' const uploadFileSize = 1024 * 1024 * 100; // 上传文件的大小限制100m const accesskey = '***************'; // 自己去申请 const accessId = '*****************' // 自己去申请 export default { _getPolicy() { let 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 ] }; return Base64.encode(JSON.stringify(policyText)) }, _getSignature(message) { let bytes = Crypto.HMAC(Crypto.SHA1, message, accesskey, { asBytes: true }); return Crypto.util.bytesToBase64(bytes); }, _getSuffix(filename) { let pos = filename.lastIndexOf('.') let suffix = '' if (pos != -1) { suffix = filename.substring(pos) } return suffix; }, getFileName(filename) { console.log('filename:', filename) return 'wx_img/' + new Date().getTime() + Math.random().toString(36).substring(3, 20) + this._getSuffix(filename) }, getImage() { return new Promise((resolve, reject) => { uni.chooseImage({ count: 1, //默认9 sizeType: ['original', 'compressed'], //可以指定是原图还是压缩图，默认二者都有 sourceType: ['album', 'camera'], success: (res) => { resolve(res) } }) }); }, getVideo() { return new Promise((resolve, reject) => { uni.chooseVideo({ count: 1, sourceType: ['camera', 'album'], success: function(res) { 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; } resolve(res.tempFilePath) }, fail: () => { uni.showToast({ title: '取消选择视频', icon: 'none', duration: 2000 }); } }) }); }, // 获取STS签名 get_STS() { // 读取接口 /* return new Promise((resolve, reject) => { let name = new Date().getTime() + Math.random(); let operate = 'uploadImg'; let that = this; uni.request({ method: "GET", url: "*************", data: { name, operate, sign: Crypto.MD5(name + operate + "bayinabayin888").toString() }, success(res) { if (res.data.code != 200) { that.$alert(res.data.message || res.data.msg) } else { resolve(res.data.data) } }, error(err) { reject(err) } }) }) */ // 本地获取 return new Promise((resolve, reject) => { let policy = this._getPolicy(); let res = { accessId: accessId, host: config.img.ossDomain, // 自己去申请 policy, signature: this._getSignature(policy), }; resolve(res) }) }, };
// 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 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;
// 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(/ /g," "); 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 '@/libs/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(){ // 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 '@/libs/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(){ // 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; })();
3、上传视频
<template> <view class="zyby-img-upload-common auth-img-item" :class="{'img-item-special': !videoUrl}"> <div v-if="!videoUrl" @tap="ChooseVideo" class='flex-perfect-center'> <slot name="image"><image src="/static/img/btn_data_upload.png"></image></slot> <div class="text-desc"><slot>上传视频</slot></div> </div> <video class="exist-img" controls v-else :src="videoUrl"></video> <!-- <video class="exist-img" src="https://dcloud-img.oss-cn-hangzhou.aliyuncs.com/guide/uniapp/%E7%AC%AC1%E8%AE%B2%EF%BC%88uni-app%E4%BA%A7%E5%93%81%E4%BB%8B%E7%BB%8D%EF%BC%89-%20DCloud%E5%AE%98%E6%96%B9%E8%A7%86%E9%A2%91%E6%95%99%E7%A8%8B@20181126.mp4" @error="videoErrorCallback" controls v-else :src="videoUrl"></video> --> <progress class="upload-progress" v-if="progress > 0" :percent="progress" active stroke-width="3"></progress> <img class="img-delete" v-if="videoUrl && deleteFlag" src="/static/icon_img/icn_delete.png" @tap="DelImg"> </view> </template> <script> import OSSUtil from '../libs/ossUtil.js' export default { props: { authId: String, videoUrl: String, deleteFlag: Boolean, }, data () { return { progress: 0, imgData: { visible: false, actions: this.imgActions } } }, methods: { async ChooseVideo() { let imageSrc = await OSSUtil.getVideo(); let sign = await OSSUtil.get_STS() let fileName = OSSUtil.getFileName(imageSrc); let uploadTask = uni.uploadFile({ url: sign.host, filePath: imageSrc, fileType: '', name: 'file', formData: { name: imageSrc, 'key': fileName, 'policy': sign.policy, 'OSSAccessKeyId': sign.accessId, 'success_action_status': '200', //让服务端返回200,不然，默认会返回204 'signature': sign.signature, }, success: (res) => { console.log('res:', res) uni.showToast({ title: '上传成功', icon: 'success', duration: 1000 }); this.$emit('videoUploaded', {data: sign.host + fileName, authId: this.authId}); }, fail: (err) => { uni.showModal({ content: err.errMsg, showCancel: false }); } }); uploadTask.onProgressUpdate((res) => { console.log("上传进度" + res.progress); this.progress = res.progress; }); // this.$emit('imgUploaded', {data: files.tempFilePaths[0], authId: this.authId}); } } } </script> <!-- Add "scoped" attribute to limit CSS to this component only --> <style scoped lang="less" rel="stylesheet/less"> @import "../style/function.less"; @import "../style/variable.less"; .zyby-img-upload-common { height: 450rpx; 100%; margin-top: 26rpx; } .auth-img-item { position: relative; > div:first-child { height: 100%; flex-direction: column; image { .square-hw(46) } .text-desc { margin-top: 20rpx; font-family: PingFangSC-Regular; font-size: 26rpx; color: @base-finish-color-deep; } } .exist-img { 100%; height: 100%; } .upload-progress { position: absolute; bottom: 0; right: 0; left: 0; } .img-delete { .square-hw(36); position: absolute; top: 10rpx; right: 10rpx; } } .img-item-special { border: 1px dashed #13DBBF;/*no*/ border-radius: 6rpx;/*no*/ } </style>