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<template>
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<div class="upload-file">
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<el-upload
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ref="fileUploadRef"
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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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:accept="fileAccept"
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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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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 v-if="showTip && !disabled" class="el-upload__tip">
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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 class="upload-file-list el-upload-list el-upload-list--text" name="el-fade-in-linear" tag="ul">
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<li v-for="(file, index) in fileList" :key="file.uid" class="el-upload-list__item ele-upload-list__item-content">
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<span class="el-icon-document"> {{ getFileName(file.name) }} </span>
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<div class="ele-upload-list__item-content-action">
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<el-button type="primary" link @click="handleDownload(file)">下载</el-button>
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<el-button type="danger" v-if="!disabled" link @click="handleDelete(index)">删除</el-button>
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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 lang="ts">
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import { propTypes } from '@/utils/propTypes';
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import { delOss, listByIds } from '@/api/system/oss';
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import { globalHeaders } from '@/utils/request';
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const props = defineProps({
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modelValue: {
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type: [String, Object, Array],
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default: () => []
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},
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// 数量限制
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limit: propTypes.number.def(5),
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// 大小限制(MB)
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fileSize: propTypes.number.def(5),
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// 文件类型, 例如['png', 'jpg', 'jpeg']
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fileType: propTypes.array.def(['doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx', 'txt', 'pdf', 'zip', 'rar']),
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// 是否显示提示
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isShowTip: propTypes.bool.def(true),
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// 禁用组件（仅查看文件）
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disabled: propTypes.bool.def(false)
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});
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const { proxy } = getCurrentInstance() as ComponentInternalInstance;
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const emit = defineEmits(['update:modelValue']);
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const number = ref(0);
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const uploadList = ref<any[]>([]);
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const baseUrl = import.meta.env.VITE_APP_BASE_API;
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const uploadFileUrl = ref(baseUrl + '/resource/oss/upload'); // 上传文件服务器地址
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const headers = ref(globalHeaders());
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const fileList = ref<any[]>([]);
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const showTip = computed(() => props.isShowTip && (props.fileType || props.fileSize));
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const fileUploadRef = ref<ElUploadInstance>();
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// 监听 fileType 变化，更新 fileAccept
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const fileAccept = computed(() => props.fileType.map((type) => `.${type}`).join(','));
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watch(
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() => props.modelValue,
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async (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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let list: any[] = [];
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if (Array.isArray(val)) {
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list = val;
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} else {
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const ossIdParam = typeof val === 'string' || typeof val === 'number' ? val : String(val);
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const res = await listByIds(ossIdParam);
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list = res.data.map((oss) => {
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return {
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name: oss.originalName,
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url: oss.url,
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ossId: oss.ossId
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};
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});
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}
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// 然后将数组转为对象数组
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fileList.value = list.map((item) => {
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item = { name: item.name, url: item.url, ossId: item.ossId };
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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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return [];
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}
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},
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{ deep: true, immediate: true }
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);
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// 上传前校检格式和大小
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const handleBeforeUpload = (file: any) => {
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// 校检文件类型
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if (props.fileType.length) {
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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 = props.fileType.indexOf(fileExt) >= 0;
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if (!isTypeOk) {
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proxy?.$modal.msgError(`文件格式不正确, 请上传${props.fileType.join('/')}格式文件!`);
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return false;
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}
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}
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// 校检文件名是否包含特殊字符
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if (file.name.includes(',')) {
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proxy?.$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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// 校检文件大小
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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
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const handleExceed = () => {
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proxy?.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
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};
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// 上传失败
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const handleUploadError = () => {
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proxy?.$modal.msgError('上传文件失败');
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};
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// 上传成功回调
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const handleUploadSuccess = (res: any, file: UploadFile) => {
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if (res.code === 200) {
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uploadList.value.push({
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name: res.data.fileName,
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url: res.data.url,
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ossId: res.data.ossId
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});
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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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fileUploadRef.value?.handleRemove(file);
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uploadedSuccessfully();
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}
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};
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// 下载文件
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const handleDownload = (file: any) => {
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if (file.ossId) {
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proxy?.$download.oss(file.ossId);
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} else {
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proxy?.$modal.msgWarning('文件ID不存在，无法下载');
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}
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};
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// 删除文件
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const handleDelete = (index: number) => {
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const ossId = fileList.value[index].ossId;
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delOss(ossId);
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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.filter((f) => f.url !== undefined).concat(uploadList.value);
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uploadList.value = [];
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number.value = 0;
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emit('update:modelValue', listToString(fileList.value));
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proxy?.$modal.closeLoading();
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}
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};
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// 获取文件名称
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const getFileName = (name: string) => {
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// 如果是url那么取最后的名字 如果不是直接返回
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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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// 对象转成指定字符串分隔
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const listToString = (list: any[], separator?: string) => {
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let strs = '';
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separator = separator || ',';
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list.forEach((item) => {
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if (item.ossId) {
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strs += item.ossId + separator;
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}
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});
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return strs != '' ? strs.substring(0, strs.length - 1) : '';
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};
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</script>
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<style lang="scss" scoped>
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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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