<template>
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<div class="upload-file">
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<el-upload
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:disabled="disabled"
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action
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:accept="accept"
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:before-upload="handleBeforeUpload"
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:file-list="fileList"
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:limit="limit"
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:on-error="handleUploadError"
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:on-exceed="handleExceed"
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:on-success="handleUploadSuccess"
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:show-file-list="false"
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:headers="headers"
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class="upload-file-uploader"
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ref="upload"
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:http-request="upload"
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>
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<!-- 上传按钮 -->
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<el-button size="mini" type="primary">选取文件</el-button>
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<!-- 上传提示 -->
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<div class="el-upload__tip" slot="tip" v-if="showTip">
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请上传
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<template v-if="fileSize"> 大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b></template>
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<template v-if="fileType"> 格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b></template>
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的文件
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</div>
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</el-upload>
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<!-- 文件列表 -->
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<transition-group class="upload-file-list el-upload-list el-upload-list--text" name="el-fade-in-linear" tag="ul">
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<li :key="file.uid" class="el-upload-list__item ele-upload-list__item-content" v-for="(file, index) in fileList">
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<el-link :href="`${file.url}`" :underline="false" target="_blank">
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<span class="el-icon-document"> {{ getFileName(file.name) }} </span>
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</el-link>
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<div class="ele-upload-list__item-content-action">
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<el-link :underline="false" @click="handleDelete(index)" type="danger" :disabled="disabled">删除</el-link>
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</div>
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</li>
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</transition-group>
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</div>
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</template>
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<script>
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import {getToken} from "@/utils/auth";
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let Minio = require('minio')
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let stream = require('stream')
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//连接minio文件服务器
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var minioClient = new Minio.Client({
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endPoint: '39.101.132.31', //对象存储服务的URL
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port: 9000,//端口号
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useSSL: false, //true代表使用HTTPS
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accessKey: 'minioadmin', //账户id
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secretKey: 'minioadmin..', //密码
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partSize: '20M'
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});
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export default {
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name: "FileUpload",
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props: {
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// 值
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value: [String, Object, Array],
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// 数量限制
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limit: {
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type: Number,
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default: 1,
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},
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// 大小限制(MB)
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fileSize: {
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type: Number,
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default: 50,
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},
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// 文件类型, 例如['png', 'jpg', 'jpeg']
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fileType: {
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type: Array,
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default: () => ["doc", "xls", "ppt", "txt", "pdf", "zip"],
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},
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// 是否显示提示
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isShowTip: {
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type: Boolean,
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default: true
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},
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disabled: {
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type: Boolean,
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default: false
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},
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accept:{
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type: String,
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default: '',
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},
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},
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data() {
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return {
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baseUrl: process.env.VUE_APP_BASE_API,
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uploadFileUrl: process.env.VUE_APP_BASE_API + "/system/oss/upload", // 上传的图片服务器地址
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headers: {
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Authorization: "Bearer " + getToken(),
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},
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fileList: [],
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};
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},
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watch: {
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value: {
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handler(val) {
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if (val) {
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let temp = 1;
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// 首先将值转为数组
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const list = Array.isArray(val) ? val : this.value.split(',');
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// 然后将数组转为对象数组
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this.fileList = list.map(item => {
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if (typeof item === "string") {
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item = {name: item, url: item};
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}
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item.uid = item.uid || new Date().getTime() + temp++;
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return item;
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});
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} else {
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this.fileList = [];
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return [];
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}
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},
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deep: true,
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immediate: true
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}
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},
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computed: {
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// 是否显示提示
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showTip() {
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return this.isShowTip && (this.fileType || this.fileSize);
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},
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},
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methods: {
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startLoading() {
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this.loading = this.$loading({
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lock: true,
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text: "Loading",
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spinner: "el-icon-loading",
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background: "rgba(0, 0, 0, 0.8)",
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});
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},
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// 上传前校检格式和大小
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handleBeforeUpload(file) {
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// 校检文件类型
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if (this.fileType) {
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let fileExtension = "";
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if (file.name.lastIndexOf(".") > -1) {
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fileExtension = file.name.slice(file.name.lastIndexOf(".") + 1);
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}
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const isTypeOk = this.fileType.some((type) => {
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if (file.type.indexOf(type) > -1) return true;
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if (fileExtension && fileExtension.indexOf(type) > -1) return true;
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return false;
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});
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if (!isTypeOk) {
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this.$message.error(`文件格式不正确, 请上传${this.fileType.join("/")}格式文件!`);
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return false;
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}
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this.startLoading();
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}
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// 校检文件大小
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if (this.fileSize) {
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const isLt = file.size / 1024 / 1024 < this.fileSize;
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if (!isLt) {
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this.$message.error(`上传文件大小不能超过 ${this.fileSize} MB!`);
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return false;
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}
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}
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return true;
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},
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// 文件个数超出
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handleExceed() {
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this.$message.error(`上传文件数量不能超过 ${this.limit} 个!`);
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},
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// 上传失败
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handleUploadError(err) {
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this.$message.error("上传失败, 请重试");
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},
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// 上传成功回调
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handleUploadSuccess(res, file, fileList) {
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if (res.code === 200) {
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this.$message.success("上传成功");
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this.loading.close();
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this.fileList.push({name: res.data.fileName, url: res.data.url});
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this.$emit("input", this.listToString(this.fileList));
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} else {
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this.$message.error(res.msg);
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this.loading.close();
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}
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},
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// 删除文件
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handleDelete(index) {
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this.fileList.splice(index, 1);
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this.$emit("input", this.listToString(this.fileList));
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},
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// 获取文件名称
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getFileName(name) {
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if (name.lastIndexOf("/") > -1) {
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return name.slice(name.lastIndexOf("/") + 1).toLowerCase();
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} else {
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return "";
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}
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},
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// 对象转成指定字符串分隔
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listToString(list, separator) {
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let strs = "";
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separator = separator || ",";
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for (let i in list) {
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strs += list[i].url + separator;
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}
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return strs != "" ? strs.substr(0, strs.length - 1) : "";
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},
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upload(fileObj) {
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let vm = this
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// const files = fileObj;
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if (fileObj) {
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let file = fileObj.file
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//判断是否选择了文件
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if (file == undefined) {
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//未选择
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console.log("请上传文件")
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} else {
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//选择
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//获取文件类型及大小
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const fileName = file.name
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const mineType = file.type
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const fileSize = file.size
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//参数
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let metadata = {
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"content-type": mineType,
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"content-length": fileSize
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}
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//判断储存桶是否存在
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minioClient.bucketExists('oafiles', function (err) {
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if (err) {
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if (err.code == 'NoSuchBucket') return console.log("bucket does not exist.")
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console.log('err', err)
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return
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}
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//存在
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console.log('Bucket exists.')
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//准备上传
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let reader = new FileReader();
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reader.readAsDataURL(file);
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reader.onloadend = function (e) {
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const dataurl = e.target.result
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//base64转blob
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const blob = vm.toBlob(dataurl)
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//blob转arrayBuffer
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let reader2 = new FileReader()
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reader2.readAsArrayBuffer(blob)
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reader2.onload = function (ex) {
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//定义流
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let bufferStream = new stream.PassThrough();
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//将buffer写入
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bufferStream.end(new Buffer(ex.target.result));
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//上传
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minioClient.putObject('oafiles', fileName, bufferStream, fileSize, metadata, function (err, etag) {
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if (err == null) {
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minioClient.presignedGetObject('oafiles', fileName, 24 * 60 * 60, function (err, presignedUrl) {
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if (err) {
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this.$message.error(err)
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return
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}
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//输出url
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console.log(presignedUrl)
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vm.$message.success("上传成功");
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vm.loading.close();
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let url = presignedUrl.split("?")[0]
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let name = url.split("/")[url.split("/").length - 1]
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console.log(url)
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console.log(name)
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vm.fileList.push({ name: url, url: url });
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vm.$emit("input", vm.listToString(vm.fileList));
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})
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}
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//return console.log(err, etag)
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})
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}
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}
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})
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}
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}
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},
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//base64转blob
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toBlob(base64Data) {
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let byteString = base64Data
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if (base64Data.split(',')[0].indexOf('base64') >= 0) {
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byteString = atob(base64Data.split(',')[1]) // base64 解码
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} else {
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byteString = unescape(base64Data.split(',')[1])
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}
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// 获取文件类型
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let mimeString = base64Data.split(';')[0].split(":")[1] // mime类型
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// ArrayBuffer 对象用来表示通用的、固定长度的原始二进制数据缓冲区
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// let arrayBuffer = new ArrayBuffer(byteString.length) // 创建缓冲数组
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// let uintArr = new Uint8Array(arrayBuffer) // 创建视图
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let uintArr = new Uint8Array(byteString.length) // 创建视图
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for (let i = 0; i < byteString.length; i++) {
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uintArr[i] = byteString.charCodeAt(i)
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}
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// 生成blob
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const blob = new Blob([uintArr], {
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type: mimeString
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})
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// 使用 Blob 创建一个指向类型化数组的URL, URL.createObjectURL是new Blob文件的方法,可以生成一个普通的url,可以直接使用,比如用在img.src上
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return blob
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}
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},
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};
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</script>
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<style scoped lang="scss">
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.upload-file-uploader {
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margin-bottom: 5px;
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}
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.upload-file-list .el-upload-list__item {
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border: 1px solid #e4e7ed;
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line-height: 2;
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margin-bottom: 10px;
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position: relative;
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}
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.upload-file-list .ele-upload-list__item-content {
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display: flex;
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justify-content: space-between;
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align-items: center;
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color: inherit;
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}
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.ele-upload-list__item-content-action .el-link {
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margin-right: 10px;
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}
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</style>
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