<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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:data="data"
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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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:http-request="UploadImage"
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class="upload-file-uploader"
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ref="fileUpload"
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v-if="!disabled"
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>
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<!-- 上传按钮 -->
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<el-button type="primary">选取文件</el-button>
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</el-upload>
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<!-- 上传提示 -->
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<div class="el-upload__tip" v-if="showTip && !disabled">
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请上传
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<template v-if="fileSize">
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大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
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</template>
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<template v-if="fileType">
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格式为 <b style="color: #f56c6c">{{ fileType.join("/") }}</b>
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</template>
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的文件
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</div>
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<!-- 文件列表 -->
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<transition-group
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ref="uploadFileList"
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class="upload-file-list el-upload-list el-upload-list--text"
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name="el-fade-in-linear"
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tag="ul"
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>
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<li
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:key="file.uid"
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class="el-upload-list__item ele-upload-list__item-content"
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v-for="(file, index) in fileList"
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>
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<el-link :href="`${file.url}`" :underline="false" target="_blank">
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<!-- 取8位 -->
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<span class="el-icon-document">
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{{ file.bucketFilename.substring(0, 18) }}
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</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
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:underline="false"
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@click="handleDownload(index)"
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type="primary"
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v-if="!disabled"
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> 下载</el-link
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>
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<el-link
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:underline="false"
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@click="handleDelete(index)"
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type="danger"
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v-if="!disabled"
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> 删除</el-link
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>
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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 setup>
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import { ref, computed, watch, onMounted, nextTick, getCurrentInstance } from 'vue';
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import { getToken } from "@/utils/auth";
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import Sortable from "sortablejs";
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import { ElMessage } from "element-plus";
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import axios from "axios";
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// Props 定义
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const props = defineProps({
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modelValue: [String, Object, Array],
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action: { type: String, default: "/common/minioUploads" },
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data: { type: Object },
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limit: { type: Number, default: 5 },
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fileSize: { type: Number, default: 5 },
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fileType: {
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type: Array,
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default: () => ["doc", "docx", "xls", "xlsx", "ppt", "pptx", "txt", "pdf"]
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},
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isShowTip: { type: Boolean, default: true },
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disabled: { type: Boolean, default: false },
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drag: { type: Boolean, default: true },
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statusType: { type: Number, default: "" }, // 用于区分不同状态的上传
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});
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// 组件实例和事件
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const { proxy } = getCurrentInstance();
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const emit = defineEmits(['update:modelValue']);
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// 响应式数据
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const number = ref(0);
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const uploadList = ref([]);
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const fileList = ref([]);
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// 计算属性
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const uploadFileUrl = computed(() => import.meta.env.VITE_APP_BASE_API + props.action);
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const headers = computed(() => ({ Authorization: "Bearer " + getToken() }));
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const showTip = computed(() => props.isShowTip && (props.fileType || props.fileSize));
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// 初始化和编辑初始化方法
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const init = () => {
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fileList.value = [];
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uploadList.value = [];
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number.value = 0;
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};
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const editInit = (val) => {
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fileList.value = [];
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val.storageBlobDTO.forEach((element) => {
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fileList.value.push(element);
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uploadedSuccessfully();
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});
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};
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// 暴露方法
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defineExpose({ init, editInit });
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// 监听 modelValue 变化
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watch(
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() => props.modelValue,
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(val) => {
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if (val) {
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let temp = 1;
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const list = Array.isArray(val) ? val : props.modelValue.split(",");
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fileList.value = 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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fileList.value = [];
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}
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},
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{ deep: true, immediate: true }
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);
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// 文件上传处理
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const UploadImage = (param) => {
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const formData = new FormData();
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formData.append("files", param.file);
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formData.append("type", props.statusType);
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axios.post(uploadFileUrl.value, formData, {
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headers: {
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"Content-Type": "multipart/form-data",
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...headers.value,
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},
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onUploadProgress: (progressEvent) => {
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const percent = Math.round((progressEvent.loaded * 100) / progressEvent.total);
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param.onProgress({ percent });
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},
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})
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.then((response) => {
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if (response.data.code === 200) {
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handleUploadSuccess(response.data, param.file);
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ElMessage.success("上传成功");
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emit("update:modelValue", fileList.value);
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} else {
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param.onError(new Error(response.data.msg));
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ElMessage.error(response.data.msg);
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handleUploadError();
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}
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})
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.catch((error) => {
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param.onError(error);
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});
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};
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// 获取文件Base64（可选功能，暂时保留）
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const getBase64ByUrl = (url) => {
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return new Promise((resolve, reject) => {
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const xhr = new XMLHttpRequest();
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xhr.open("GET", url, true);
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xhr.responseType = "blob";
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xhr.onload = function () {
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if (this.status === 200) {
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const reader = new FileReader();
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reader.onloadend = () => resolve(reader.result);
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reader.readAsDataURL(this.response);
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} else {
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reject(new Error("Failed to fetch image"));
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}
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};
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xhr.onerror = () => reject(new Error("Network error"));
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xhr.send();
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});
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};
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// 移动端下载图片
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const downloadImageForMobile = (imgSrc, name) => {
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const image = new Image();
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image.setAttribute("crossOrigin", "anonymous");
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image.onload = () => {
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const canvas = document.createElement("canvas");
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canvas.width = image.width;
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canvas.height = image.height;
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const ctx = canvas.getContext("2d");
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ctx.drawImage(image, 0, 0, image.width, image.height);
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const url = canvas.toDataURL("image/png");
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const a = document.createElement("a");
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a.download = name;
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a.href = url;
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a.click();
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};
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image.src = imgSrc;
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};
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// 下载文件
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const handleDownload = (index) => {
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const file = fileList.value[index];
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const url = file.url;
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if (!url) {
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proxy.$modal.msgError("文件链接不存在，无法下载");
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return;
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}
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// 移动端特殊处理
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if (window.navigator.userAgent.match(/(iPhone|iPod|Android|ios)/i)) {
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const fileName = file.bucketFilename || file.key;
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downloadImageForMobile(url, fileName);
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return;
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}
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// 桌面端下载
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const link = document.createElement("a");
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link.href = url;
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link.download = file.bucketFilename || file.key;
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link.click();
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};
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// 上传前校验
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const handleBeforeUpload = (file) => {
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// 校验文件名特殊字符
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if (file.name.includes(",")) {
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proxy.$modal.msgError("文件名不正确，不能包含英文逗号!");
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return false;
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}
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// 校验文件大小
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if (props.fileSize) {
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const isLt = file.size / 1024 / 1024 < props.fileSize;
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if (!isLt) {
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proxy.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
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return false;
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}
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}
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proxy.$modal.loading("正在上传文件，请稍候...");
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number.value++;
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return true;
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};
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// 文件个数超出限制
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const handleExceed = () => {
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proxy.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
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};
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// 上传失败处理
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const handleUploadError = () => {
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ElMessage.error("上传文件失败");
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proxy.$modal.closeLoading();
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};
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// 上传成功回调
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const handleUploadSuccess = (res, file) => {
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if (res.code === 200) {
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uploadList.value.push(res.data[0]);
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uploadedSuccessfully();
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} else {
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number.value--;
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proxy.$modal.closeLoading();
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proxy.$modal.msgError(res.msg);
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proxy.$refs.fileUpload.handleRemove(file);
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uploadedSuccessfully();
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}
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};
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// 删除文件
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const handleDelete = (index) => {
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fileList.value.splice(index, 1);
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emit("update:modelValue", listToString(fileList.value));
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};
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// 上传结束处理
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const uploadedSuccessfully = () => {
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if (number.value > 0 && uploadList.value.length === number.value) {
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fileList.value = fileList.value
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.filter((f) => f.url !== undefined)
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.concat(uploadList.value);
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uploadList.value = [];
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number.value = 0;
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emit("update:modelValue");
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proxy.$modal.closeLoading();
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}
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};
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const listToString = (list, separator = ",") => {
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const strs = list
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.filter(item => item.url)
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.map(item => item.url)
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.join(separator);
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return strs;
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};
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// 初始化拖拽排序
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onMounted(() => {
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if (props.drag && !props.disabled) {
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nextTick(() => {
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const element = proxy.$refs.uploadFileList?.$el || proxy.$refs.uploadFileList;
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if (element) {
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Sortable.create(element, {
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ghostClass: "file-upload-darg",
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onEnd: (evt) => {
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const movedItem = fileList.value.splice(evt.oldIndex, 1)[0];
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fileList.value.splice(evt.newIndex, 0, movedItem);
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emit("update:modelValue", listToString(fileList.value));
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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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</script>
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<style scoped lang="scss">
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.file-upload-darg {
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opacity: 0.5;
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background: #c8ebfb;
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}
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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 {
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margin-top: 10px;
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max-height: 150px;
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overflow-y: auto;
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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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transition: none !important;
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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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max-height: 20px;
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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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.el-icon-document {
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padding: 10px;
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}
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</style>
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