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<template>
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<el-upload
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ref="uploadRef"
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:multiple="limit > 1"
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name="file"
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list-type="picture-card"
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v-model:file-list="fileList"
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:show-file-list="true"
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:action="updateUrl"
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:headers="uploadHeaders"
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:limit="limit"
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:before-upload="beforeUpload"
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:on-exceed="handleExceed"
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:on-success="handleFileSuccess"
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:on-error="excelUploadError"
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:on-remove="handleRemove"
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:on-preview="handlePictureCardPreview"
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:class="{ hide: fileList.length >= limit }"
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>
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<Icon icon="ep:upload-filled" />
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</el-upload>
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<!-- 文件列表 -->
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<Dialog v-model="dialogVisible" title="预览" width="800" append-to-body>
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<img :src="dialogImageUrl" style="display: block; max-width: 100%; margin: 0 auto" />
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</Dialog>
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</template>
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<script setup lang="ts">
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import { ref, watch } from 'vue'
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import { useMessage } from '@/hooks/web/useMessage'
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import { propTypes } from '@/utils/propTypes'
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import { getAccessToken, getTenantId } from '@/utils/auth'
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import { ElUpload, UploadInstance, UploadProps, UploadRawFile, UploadUserFile } from 'element-plus'
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const message = useMessage() // 消息弹窗
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const emit = defineEmits(['input'])
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const props = defineProps({
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imgs: propTypes.oneOfType([String, Object, Array]),
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title: propTypes.string.def('图片上传'),
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updateUrl: propTypes.string.def(import.meta.env.VITE_UPLOAD_URL),
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fileType: propTypes.array.def(['jpg', 'png', 'gif', 'jpeg']), // 文件类型, 例如['png', 'jpg', 'jpeg']
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fileSize: propTypes.number.def(5), // 大小限制(MB)
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limit: propTypes.number.def(1), // 数量限制
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isShowTip: propTypes.bool.def(false) // 是否显示提示
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})
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// ========== 上传相关 ==========
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const uploadRef = ref<UploadInstance>()
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const uploadList = ref<UploadUserFile[]>([])
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const fileList = ref<UploadUserFile[]>([])
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const uploadNumber = ref<number>(0)
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const dialogImageUrl = ref()
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const dialogVisible = ref(false)
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const uploadHeaders = ref({
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Authorization: 'Bearer ' + getAccessToken(),
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'tenant-id': getTenantId()
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})
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watch(
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() => props.imgs,
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(val) => {
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if (val) {
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// 首先将值转为数组, 当只穿了一个图片时，会报map方法错误
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const list = Array.isArray(props.imgs)
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? props.imgs
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: Array.isArray(props.imgs?.split(','))
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? props.imgs?.split(',')
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: Array.of(props.imgs)
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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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if (typeof item === 'string') {
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// edit by 芋道源码
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item = { name: item, url: item }
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}
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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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{
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deep: true,
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immediate: true
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}
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)
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// 文件上传之前判断
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const beforeUpload: UploadProps['beforeUpload'] = (file: UploadRawFile) => {
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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 isImg = props.fileType.some((type: string) => {
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if (file.type.indexOf(type) > -1) return true
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return !!(fileExtension && fileExtension.indexOf(type) > -1)
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})
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const isLimit = file.size < props.fileSize * 1024 * 1024
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if (!isImg) {
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message.error(`文件格式不正确, 请上传${props.fileType.join('/')}格式!`)
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return false
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}
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if (!isLimit) {
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message.error(`上传文件大小不能超过${props.fileSize}MB!`)
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return false
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}
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message.success('正在上传文件，请稍候...')
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uploadNumber.value++
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}
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// 处理上传的文件发生变化
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// const handleFileChange = (uploadFile: UploadFile): void => {
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// uploadRef.value.data.path = uploadFile.name
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// }
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// 文件上传成功
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const handleFileSuccess: UploadProps['onSuccess'] = (res: any): void => {
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message.success('上传成功')
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console.info(uploadList.value)
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console.info(fileList.value)
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uploadList.value.push({ name: res.data, url: res.data })
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if (uploadList.value.length == uploadNumber.value) {
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fileList.value = fileList.value.concat(uploadList.value)
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uploadList.value = []
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uploadNumber.value = 0
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emit('input', listToString(fileList.value))
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}
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}
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// 文件数超出提示
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const handleExceed: UploadProps['onExceed'] = (): void => {
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message.error(`上传文件数量不能超过${props.limit}个!`)
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}
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// 上传错误提示
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const excelUploadError: UploadProps['onError'] = (): void => {
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message.error('导入数据失败，请您重新上传！')
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}
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// 删除上传文件
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const handleRemove = (file) => {
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const findex = fileList.value.map((f) => f.name).indexOf(file.name)
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if (findex > -1) {
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fileList.value.splice(findex, 1)
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emit('input', listToString(fileList.value))
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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: UploadUserFile[], separator?: string) => {
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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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// 预览
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const handlePictureCardPreview: UploadProps['onPreview'] = (file) => {
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dialogImageUrl.value = file.url
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dialogVisible.value = true
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}
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</script>
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<style scoped lang="scss">
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// .el-upload--picture-card 控制加号部分
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:deep(.hide .el-upload--picture-card) {
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display: none;
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}
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// 去掉动画效果
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:deep(.el-list-enter-active, .el-list-leave-active) {
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transition: all 0s;
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}
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:deep(.el-list-enter, .el-list-leave-active) {
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opacity: 0;
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transform: translateY(0);
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}
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</style>
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xingyu4j
3 years ago