华为云文件上传（单个上传和分段上传）

华为云文件上传（单个上传和分段上传）"/>

华为云文件上传（单个上传和分段上传）

首先引入静态文件：

华为云官网提供js下载的链接

然后后端提供一个公用接口，返回华为云上传的基本配置：

官网提供的链接：华为云obs信息配置

一：单个上传

huaweiyunUpload (file, fileName, name, url, size, callback, failCallBack) {// huaweiyunConfig为上面接口存储的vuex数据// 华为云上传流程var _self = thisvar obsClient = new ObsClient({ // 创建ObsClient实例access_key_id: _self.huaweiyunConfig.accessKeyId,secret_access_key: _self.huaweiyunConfig.secretAccessKey,// 这里以华北-北京四为例，其他地区请按实际情况填写server: _self.huaweiyunConfig.endPoint})var progressRate = function (transferredAmount, totalAmount, totalSeconds) {// 获取上传平均速率（KB/S）console.log(transferredAmount * 1.0 / totalSeconds / 1024)// 获取上传进度百分比_self.$set(_self, 'percent', Math.floor(transferredAmount * 100.0 / totalAmount))}obsClient.putObject({Bucket: _self.huaweiyunConfig.bucketName,Key: this.huaweiyunConfig.prefix+fileName,SourceFile: file.file,ProgressCallback: progressRate}, function (err, result) {if (err) {console.error('Error-->' + err)if (failCallBack) failCallBack(err)} else {if (result.CommonMsg.Status == 200) {// console.log('success====', result)if (callback) callback({ name: fileName, fileName: name, url: url, size: size })}}})
}

页面应用：

const url = this.huaweiyunConfig.viewPath + this.huaweiyunConfig.prefix+fileName
// file 文件流 fileName带后缀的文件名  name不带后缀的文件名 url 文件存储路径 size 文件大小
this.huaweiyunUpload(file, fileName, name, url, size, ()=>{// success function }, ()=>{// fail function})

二：分段上传

createInitTask (file, fileUrl = '', sucCallBack, failCallBack) { // 大文件上传-分段上传var _self = thisconst fileName = file.file.name // 文件名-带后缀const routeName = this.$route.matched[0].pathconst fileFullUrl = this.huaweiyunConfig.prefix + routeName + '/' + fileUrl + new Date().getTime() + '/' + fileName// 创建ObsClient实例var obsClient = new ObsClient({access_key_id: _self.huaweiyunConfig.accessKeyId,secret_access_key: _self.huaweiyunConfig.secretAccessKey,// 这里以华北-北京四为例，其他地区请按实际情况填写server: _self.huaweiyunConfig.endPoint})obsClient.initiateMultipartUpload({Bucket: _self.huaweiyunConfig.bucketName,Key: fileFullUrl,ContentType: 'text/plain',Metadata: { property: 'property-value' }}, function (err, result) {if (err) {if (failCallBack) failCallBack()} else {console.log('Status-->' + result.CommonMsg.Status)if (result.CommonMsg.Status < 300 && result.InterfaceResult) {console.log('UploadId-->' + result.InterfaceResult.UploadId)// if (createSuc) createSuc(obsClient,result, file, fileFullUrl)_self.uploadSection(obsClient, result, file, fileFullUrl, sucCallBack, failCallBack)}}})},uploadSection (obsClient, result, file, fileFullUrl, sucCallBack, failCallBack) { // 上传段var _self = thisconst PartSize = 20 * 1024 * 1024const UploadId = result.InterfaceResult.UploadId// const file = document.getElementById('input-file').files[0];const lastPartSize = file.file.size % PartSize// 段数量const count = Math.ceil(file.file.size / PartSize)let start = 1 // 当前段值const Parts = [] // 存放PartNumber， ETag// 上传第n段const uploadPart = (n, callback) => {obsClient.uploadPart({Bucket: _self.huaweiyunConfig.bucketName,Key: fileFullUrl,// 设置分段号，范围是1~10000PartNumber: n,// 设置Upload IDUploadId,// 设置将要上传的大文件SourceFile: file.file,// 设置分段大小PartSize: count === n ? lastPartSize : PartSize,// 设置分段的起始偏移大小Offset: (n - 1) * PartSize}, function (err, result) {if (err) {console.log('Error-->' + err)if (failCallBack) failCallBack()} else {console.log('Status-->' + result.CommonMsg.Status)if (result.CommonMsg.Status < 300 && result.InterfaceResult) {// console.log('ETag-->' + result.InterfaceResult.ETag);Parts.push({ PartNumber: n, ETag: result.InterfaceResult.ETag })start++if (start <= count) uploadPart(start)if (callback) callback()if (n === count) { // 最后一段_self.mergeSection(obsClient, UploadId, Parts, fileFullUrl, file, sucCallBack, failCallBack)}}}})}// 上传段uploadPart(start)},mergeSection (obsClient, UploadId, Parts, fileFullUrl, file, sucCallBack, failCallBack) { // 合并段var _self = thislet fileName = file.file.name // 文件名-带后缀const size = file.file.size // 文件大小 Bvar index = fileName.lastIndexOf('/')fileName = fileName.substring(index + 1,fileName.length)const arr = fileName.split('.')arr && arr.splice(arr.length - 1, 1)const name = arr && arr.join('.') // 文件名-不带后缀const url = this.huaweiyunConfig.viewPath + fileFullUrl // 完整urlobsClientpleteMultipartUpload({Bucket: _self.huaweiyunConfig.bucketName,Key: fileFullUrl,// 设置Upload IDUploadId: UploadId,Parts: Parts}, function (err, result) {if (err) {console.log('Error-->' + err)if (failCallBack) failCallBack()} else {// console.log('Status-->' + result.CommonMsg.Status)if (sucCallBack) sucCallBack({ name: fileName, fileName: name, url: url, size: size })}})}

页面应用：

this.createInitTask(file, fileFullUrl, (obj) => {that.fileList = []that.fileList.push({ name: obj.fileName, appendixName: obj.name, appendixUrl: obj.url, size: obj.size })that.batchUploadWorkFilesAjax(that.fileList)
}, () => { that.btnLoading = false })