前言：基于天翼云的面相对象存储(Object-Oriented Storage，OOS),实现小文件的直接上传，大文件的分片上传。
开发文档地址：网址
上传之前的相关操作 ：注册账户，创建 AccessKeyId 和 AccessSecretKey之后，新建一个桶bucket做cors相关配置将暴露的 Headers:设置成: ETag ，然后在public文件夹下面的index.html引入相关sdk文件（这里引入的是oos-sdk-6.0.min.js，文档的oos-js-sdk-6.2.zip解压包内部包含了这个文件，以及相关的实现demo案例）
一、直接上传（如：图片，小型文件）
使用的是putObject方法，下面是个uploadFile.vue组件
javascript
<template>
<div>
<el-upload
action="#"
:before-upload="beforeAvatarUpload"
:list-type="showType"
:on-preview="handlePictureCardPreview"
:on-remove="handleRemove"
:limit="1"
ref="uploadPic"
:file-list="fileList">
<!-- 预留的插槽 -->
<slot name="uploadIcon"></slot>
</el-upload>
<el-dialog :visible.sync="dialogVisible">
<img width="100%" :src="dialogImageUrl" alt="">
</el-dialog>
</div>
</template>
<script>
export default {
name: "upLoadFile",
props: {
fileList: {
type: Array,
default: () => {
return []
},
},
// 文件上传的时候的初始样式
showType: {
type: String,
default: 'picture-card'
},
},
data() {
return {
dialogVisible: false,
clickTime: null,
Bucket: null,
dialogImageUrl: '',
}
},
methods: {
// 直接上传
beforeAvatarUpload(file) {
let that = this
return new Promise((resolve, reject) => {
that.clickTime = that.$moment().format("YYYYMMDD")
// 这里创建client对象的配置项目说明 文档的options 配置项有详细解释
var client = new OOS.S3({
accessKeyId: '前面创建的accessKeyId', // 通过天翼云控制台创建的 access key
secretAccessKey: '前面创建的secretAccessKey', // 通过天翼云控制台创建的 secret access key;
endpoint: '域名', // OOS 域名
signatureVersion: 'v4', // 可选v2 或v4
apiVersion: '2006-03-01',
s3ForcePathStyle: true
});
that.Bucket = '桶的名称'
const key = that.clickTime + '/' + file.name //
toUpload(that.Bucket, file, key)
function toUpload(bucket, file, key) {
var params = {
Bucket: bucket,
Body: file, // file内容
Key: key,// 文件名称
};
client.putObject(params, function (err, data) {
if (err) {
} else {
console.log('上传成功');
// 上传成功之后是没有返回值的
// 访问的上传成功的图片路径的规则 你的域名/桶的名称/key (key就是前面拼接的文件名称)
}
})
}
})
},
// 图片展示
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;// 图片预览的url
this.dialogVisible = true;
},
// 图片移除
handleRemove(file) {
this.$emit('getImg', [], this.type, 0, '')
},
}
}
</script>
<style scoped lang="less">
/* 图片封面大小*/
/deep/ .el-upload-list--picture-card .el-upload-list__item-thumbnail,
/deep/ .el-upload-list--picture-card .el-upload-list__item,
/deep/ .el-upload--picture-card{
height: 60px;
width: 60px;
line-height: 60px;
}
/deep/ .el-upload-list__item.is-success .el-upload-list__item-status-label{
display: none !important;
}
/deep/ .el-upload-list--picture{
display: none;
}
</style>引用组件的地方
javascript
<uploadFile :fileList="fileListOne">
<i class="el-icon-plus" slot="uploadIcon"></i>
</uploadFile> 效果如图：
二、切片上传（大型文件）
使用的是以下四个方法
子组件uploadFile.vue
javascript
<!-- 大型文件切片上传 -->
<template>
<div>
<el-upload
action="#"
:before-upload="beforeAvatarUpload"
:list-type="showType"
:on-preview="handlePictureCardPreview"
:on-remove="handleRemove"
:limit="1"
ref="uploadPic"
:file-list="fileList">
<slot name="uploadIcon"></slot>
<!-- <i class="el-icon-plus"></i> -->
<!-- <Button icon="md-cloud-upload">上传文件</Button> -->
</el-upload>
<el-dialog :visible.sync="dialogVisible">
<img width="100%" :src="dialogImageUrl" alt="">
</el-dialog>
</div>
</template>
<script>
export default {
name: "upLoadFile",
watch: {
moveFileFlag(newVal, oldVal) {
console.log('newVal', newVal)
if (newVal) {
this.handleRemove()
}
}
},
props: {
fileList: {
type: Array,
default: () => {
return []
},
},
// 文件上传的时候的初始样式
showType: {
type: String,
default: 'picture-card'
},
// 移除文件
moveFileFlag: {
type: Boolean,
default: false,
},
disabled: {
type: Boolean,
default: false,
},
// 一个页面使用了多次组件的区分
type: {
type: String,
default: ''
}
},
data() {
return {
dialogVisible: false,
clickTime: null,
initialId: '',// 分片上传需要的 initial
// 分片上传 complete 所需参数
MultipartUpload: {
Parts: []
},
chunk: 10485760, // 10M
index: 0,
Bucket: null,
dialogImageUrl: '',
fileSize: 0,
packageVersionName: '',
}
},
methods: {
// // 图片上传前
beforeAvatarUpload(file) {
console.log('file:', file);
this.fileSize = Number(file.size / 1024 / 1024).toFixed(2) // 计算文件的大小mb
let that = this
return new Promise((resolve, reject) => {
that.clickTime = that.$moment().format("YYYYMMDD")
var client = new OOS.S3({
accessKeyId: that.$util.accessKeyId,
secretAccessKey: that.$util.secretAccessKey,
endpoint: that.$util.endPoint,
signatureVersion: 'v4', // 可选v2 或v4
apiVersion: '2006-03-01',
s3ForcePathStyle: true
});
that.Bucket = that.$util.BucketName
// 上传
async function putUPload() {
try {
const key = that.clickTime + '/' + file.name
// let [name, ext] = key.split('.');
let lastIndex = key.lastIndexOf('.')
let name = key.substring(0, lastIndex)
let ext = key.substring(lastIndex + 1,)
that.packageVersionName = name.split('/')[1]
//每次的起始位置
let start = that.chunk * that.index;
if (start > file.size) { //分片上传完成，文件合成
mergeUpload(key, that.Bucket)
return
}
// //每次分片的大小
let bold = file.slice(start, start + that.chunk);
//得到文件名称,index的目的是分片不重复
let boldName = `${name}${that.index}.${ext}`;
console.log('boldName:', boldName);
//需要在转换为文件对象
let boldFile = new File([bold], boldName)
let PartNumber = that.index + 1;
if (that.index == 0) {//第一次需要获取uploadId
getUploadId(boldFile, PartNumber, key, that.Bucket)
} else {
// 分片上传
getUploadPart(boldFile, PartNumber, key, that.Bucket)
}
} catch (e) {
console.log('错误了吗')
// 捕获超时异常。
}
}
putUPload();
//本接口初始化一个分片上传（Multipart Upload）操作，并返回一个上传 ID，
// 此 ID用来将此次分片上传操作中上传的所有片段合并成一个对象。用
function getUploadId(file, PartNumber, largeName, BucketName) {
var params = {
Bucket: BucketName,
Key: largeName,// 文件名称
};
client.createMultipartUpload(params, function (err, data) {
if (err) {
console.log(err, err.stack); // an error occurredw
} else { // successful response
//拿到分片上传需要的id后开始分片上传操作
that.initialId = data.UploadId;
getUploadPart(file, PartNumber, largeName, that.Bucket)
}
});
}
// 该接口用于实现分片上传操作中片段的上传
function getUploadPart(file, PartNumber, largeName, BucketName) {
var params = {
Body: file,
Bucket: BucketName,
Key: largeName,// 文件名称
PartNumber: PartNumber,
UploadId: that.initialId,// 分片需要的uploadId
};
console.log('params:', params);
client.uploadPart(params, function (err, data) {
if (err) {
console.log(err, err.stack);
} else {// an error occurred
console.log('ETag', data);
// 存储分片数据
that.MultipartUpload.Parts.push({ PartNumber: PartNumber, ETag: data.ETag })
that.index++
putUPload()
};
});
}
//该接口通过合并之前的上传片段来完成一次分片上传过程。
function mergeUpload(largeName, BucketName) {
var params = {
Bucket: BucketName,
Key: largeName,// 文件名称
UploadId: that.initialId,// 分片需要的uploadId
MultipartUpload: that.MultipartUpload,// 之前所有分片的集合
};
client.completeMultipartUpload(params, function (err, data) {
if (err) {
that.index = 0;
that.initialId = '';// 分片需要传的值
that.MultipartUpload.Parts = [];//分片集合
that.$forceUpdate();
} else {
console.log('上传成功的数据', data);
that.$emit('getImg', [{ name: data.Key, url: data.Location }], that.type, that.fileSize, that.packageVersionName)
that.$forceUpdate();
}
});
}
})
},
// 图片展示
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url;// 图片预览的url
this.dialogVisible = true;
},
// 图片移除
handleRemove(file) {
this.index = 0;
this.initialId = '';
this.MultipartUpload.Parts = [];
this.$emit('getImg', [], this.type, 0, '')
},
}
}
</script>
<style scoped lang="less">
/* 图片封面大小*/
/deep/ .el-upload-list--picture-card .el-upload-list__item-thumbnail,
/deep/ .el-upload-list--picture-card .el-upload-list__item,
/deep/ .el-upload--picture-card{
height: 60px;
width: 60px;
line-height: 60px;
}
/deep/ .el-upload-list__item.is-success .el-upload-list__item-status-label{
display: none !important;
}
/deep/ .el-upload-list--picture{
display: none;
}
</style>父组件
javascript
<template>
<div>
<!-- 组件一 -->
<uploadFile :fileList="fileListOne" type ="addIcon" @getImg="getFile">
<i class="el-icon-plus" slot="uploadIcon"></i>
</uploadFile>
<!-- 组件二 -->
<uploadFile :fileList="fileListTwo" type="appUpload" showType="picture" :moveFileFlag="moveFileFlag" @getImg="getFile">
<Button slot="uploadIcon" icon="md-cloud-upload">上传文件</Button>
</uploadFile>
</div>
</template>
<script>
import uploadFile from "@/views/component/uploadFile/uploadFile.vue";
export default {
components: {
uploadFile
},
data() {
return {
fileListOne: [],
fileListTwo: [],
moveFileFlag: false
}
},
methods: {
getFile(val, type, size, packageVersionName) {
console.log('val', val); // val内部就包含了子组件传递过来的文件的下载地址
// 逻辑处理，数据回现
if (type == 'addIcon') { // 添加图标
} else if (type == 'appUpload') { // 应用上传
}
},
}
}
</script>
<style>
</style>最终效果如下：（注：内部细节实现添加了具体功能代码）
