前端记录5--Element上传文件到阿里云OSS记录

vue 通过element el-upload上传到阿里云仓库的步骤

  1. 安装ali-oss

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    npm install ali-oss
  2. 新建配置文件,如ali_oss.js,我这里只是用了他的getFilePath跟getFileNumber部分
    可以在这里配置oss client,也可以在vue代码中通过接口动态获取,本文使用的是后者,不过提供前者的实现,可以参看下面代码的配置部分

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    let OSS = require('ali-oss')
    let region = '你的region '
    //云账号AccessKey有所有API访问权限,建议遵循阿里云安全最佳实践,部署在服务端使用RAM子账号或STS,部署在客户端使用STS
    let accessKeyId = '你的accessKeyId '
    let accessKeySecret = '你的accessKeySecret '
    let bucket = '你的bucket '

    //client配置
    let client = new OSS({
    region: region,
    accessKeyId: accessKeyId,
    accessKeySecret: accessKeySecret,
    bucket: bucket
    })

    export default (conf) => {
    return new OSS(conf)
    };
    //文件上传
    export const put = async(filePath, fileUrl) => {
    try {
    let result = await client.put(filePath, fileUrl)
    return result
    } catch (e) {
    console.log(e)
    }
    }

    //oss的地址
    export const getSystemPath = () => {
    return ossPath
    }

    //文件的上传地址
    export const getFilePath = (ObjName, orangeName) => {
    let fileName = getFileNumber() + getFileSuffix(orangeName)
    let result = `/shuyu/admin/${fileName}`
    return result
    }

    //oss文件名获取随机
    export const getFileNumber = () => {
    let timeNumber = new Date().getTime()
    let randomNumber = Math.floor(Math.random() * 999999)
    return timeNumber + '' + randomNumber
    }

    //获取文件后缀
    export const getFileSuffix = (fileName) => {
    let name = fileName.lastIndexOf('.')//取到文件名开始到最后一个点的长度
    let length = fileName.length
    let fileSuffix = fileName.substring(name, length)
    return fileSuffix
    }

    //检查文件格式
    export const checkFileFormat = (fileName) => {
    let isJPG = false
    let type = fileName.substring(fileName.lastIndexOf('.') + 1).toLowerCase()
    if (type === 'jpg' || type === 'png' || type === 'jpeg') {
    isJPG = true
    } else if (type === 'mp4' || type === '3gp' || type === 'avi') {
    isJPG = true
    }
    return isJPG
    }

    //获取录音和视频的时长
    export const getTimeFromVideo = (file) => {
    let time = 0
    var url = URL.createObjectURL(file)
    var audioElement = new Audio(url)
    audioElement.addEventListener('loadedmetadata', (_event) => {
    time = parseInt(audioElement.duration)
    return time
    })
    console.log(time)
    }
  3. 如果是直接在JS配置可以跳过这一步,如果通过后台接口返回accessKeyId 等参数就需要这一步

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    //data部分
    uploadConf: {
    region: 'oss-cn-beijing',
    accessKeyId: null,
    accessKeySecret: null,
    bucket: 'linkdoc-felling',
    stsToken: null
    }

    //methods部分
    getOssToken().then(res => {
    this.uploadConf.accessKeyId = res.AccessKeyId
    this.uploadConf.accessKeySecret = res.AccessKeySecret
    this.uploadConf.stsToken = res.SecurityToken
    })
  4. 配置el-upload,自定义http-request方法

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    <el-upload
    class="avatar-uploader"
    action="#"
    :show-file-list="false"
    :http-request="fileUpLoad"
    >
    <img v-if="form.credentialsRealUrl" :src="form.credentialsRealUrl" class="avatar">
    <i v-else class="el-icon-plus avatar-uploader-icon"></i>
    </el-upload>
  5. 实现http-request对应的方法
    如果参照下面的代码,一定别忘记引入我们的js文件

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    import ossClient, { getFilePath, getSystemPath } from '@/utils/ali_oss'
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    //上传文件操作,调用阿里云
    fileUpLoad(option){
    //提前拼接返回地址
    let filePath = getFilePath(this.$route.name, option.file.name)
    if (option.file.size > 2024000) {
    this.$message.error('资源文件大小超出范围')
    return
    }
    ossClient(this.uploadConf).put(filePath, option.file).then((res) => {
    console.log(res)
    if (res !== undefined) {
    this.$message.success('上传成功')
    }
    })
    }

至此,上传成功,filePath已经获取到了,如果是加密的数据,则继续调用自己的接口,获取真实可读的图片地址