<template>
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<div class="upload-file">
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<el-upload
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multiple
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:action="uploadFileUrl"
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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="fileUpload"
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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.url" class="el-upload-list__item ele-upload-list__item-content" v-for="(file, index) in fileList">
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<!-- 图片文件 -->
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<template v-if="isImage(file)">
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<div class="image-preview" @click="handlePreview(file)">
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<img :src="getImageUrl(file.url)" class="thumbnail" />
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<span class="filename">{{ getFileName(file.name) }}</span>
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</div>
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</template>
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<!-- 非图片文件 -->
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<template v-else>
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<el-link @click="handleDownload(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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</template>
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<div class="ele-upload-list__item-content-action">
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<template v-if="isImage(file)">
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<el-link :underline="false" @click="handleDownload(file.url)" type="primary" class="action-link">下载</el-link>
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</template>
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<el-link :underline="false" @click="handleDelete(index)" type="danger">删除</el-link>
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</div>
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</li>
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</transition-group>
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<!-- 图片预览弹窗 -->
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<el-dialog :visible.sync="previewVisible" append-to-body title="图片预览" width="800px">
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<img :src="previewUrl" style="width: 100%;" />
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</el-dialog>
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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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export default {
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name: "FileUpload",
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props: {
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value: [String, Object, Array],
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limit: {
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type: Number,
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default: 5,
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},
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fileSize: {
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type: Number,
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default: 20,
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},
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fileType: {
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type: Array,
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default: () => ["docx", "xlsx", "ppt", "txt", "pdf","png","jpg"],
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},
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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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},
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data() {
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return {
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number: 0,
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uploadList: [],
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baseUrl: process.env.VUE_APP_BASE_API,
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uploadFileUrl: process.env.VUE_APP_BASE_API + "/common/upload",
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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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previewVisible: false,
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previewUrl: "",
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imageTypes: ['png', 'jpg', 'jpeg', 'gif']
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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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const list = Array.isArray(val) ? val : this.value.split(',');
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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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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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isImage(file) {
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const fileName = file.name.split('.');
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const fileExt = fileName[fileName.length - 1].toLowerCase();
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return this.imageTypes.includes(fileExt);
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},
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getImageUrl(url) {
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return url.startsWith('http') ? url : `${this.baseUrl}${url}`;
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},
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handlePreview(file) {
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this.previewUrl = this.getImageUrl(file.url);
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this.previewVisible = true;
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},
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handleBeforeUpload(file) {
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if (this.fileType) {
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const fileName = file.name.split('.');
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const fileExt = fileName[fileName.length - 1];
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const isTypeOk = this.fileType.indexOf(fileExt) >= 0;
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if (!isTypeOk) {
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this.$modal.msgError(`文件格式不正确, 请上传${this.fileType.join("/")}格式文件!`);
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return false;
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}
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}
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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.$modal.msgError(`上传文件大小不能超过 ${this.fileSize} MB!`);
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return false;
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}
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}
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this.$modal.loading("正在上传文件，请稍候...");
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this.number++;
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return true;
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},
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handleExceed() {
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this.$modal.msgError(`上传文件数量不能超过 ${this.limit} 个!`);
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},
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handleUploadError(err) {
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this.$modal.msgError("上传文件失败，请重试");
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this.$modal.closeLoading();
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},
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handleUploadSuccess(res, file) {
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if (res.code === 200) {
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this.uploadList.push({ name: res.fileName, url: res.fileName });
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this.uploadedSuccessfully();
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} else {
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this.number--;
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this.$modal.closeLoading();
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this.$modal.msgError(res.msg);
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this.$refs.fileUpload.handleRemove(file);
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this.uploadedSuccessfully();
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}
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},
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handleDelete(index) {
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this.fileList.splice(index, 1);
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this.$emit("input", this.listToString(this.fileList));
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},
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uploadedSuccessfully() {
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if (this.number > 0 && this.uploadList.length === this.number) {
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this.fileList = this.fileList.concat(this.uploadList);
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this.uploadList = [];
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this.number = 0;
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this.$emit("input", this.listToString(this.fileList));
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this.$modal.closeLoading();
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}
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},
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getFileName(name) {
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if (name.lastIndexOf("/") > -1) {
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return name.slice(name.lastIndexOf("/") + 1);
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} else {
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return name;
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}
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},
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listToString(list, separator) {
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let strs = "";
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separator = separator || ",";
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for (let i in list) {
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strs += list[i].url + separator;
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}
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return strs != '' ? strs.substr(0, strs.length - 1) : '';
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},
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handleDownload(data) {
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this.$download.resource(data);
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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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.image-preview {
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display: flex;
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align-items: center;
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cursor: pointer;
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.thumbnail {
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width: 60px;
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height: 60px;
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object-fit: cover;
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margin-right: 10px;
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border-radius: 4px;
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}
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.filename {
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color: #606266;
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}
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}
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.action-link {
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margin-right: 10px;
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}
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</style>
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