210 lines
4.5 KiB
Vue
210 lines
4.5 KiB
Vue
<!-- 单图上传组件 -->
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<template>
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<el-upload
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class="single-upload"
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list-type="picture-card"
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:show-file-list="false"
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:accept="props.accept"
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:before-upload="handleBeforeUpload"
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:http-request="handleUpload"
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:on-success="onSuccess"
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:on-error="onError"
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>
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<template #default>
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<template v-if="modelValue">
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<el-image
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class="single-upload__image"
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:src="modelValue"
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:preview-src-list="[modelValue]"
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@click.stop="handlePreview"
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/>
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<el-icon class="single-upload__delete-btn" @click.stop="handleDelete">
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<CircleCloseFilled />
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</el-icon>
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</template>
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<template v-else>
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<el-icon>
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<Plus />
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</el-icon>
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</template>
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</template>
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</el-upload>
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</template>
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<script setup lang="ts">
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import { UploadRawFile, UploadRequestOptions } from 'element-plus'
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import FileAPI, { FileInfo } from '@/api/file-api'
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const props = defineProps({
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/**
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* 请求携带的额外参数
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*/
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data: {
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type: Object,
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default: () => {
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return {}
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}
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},
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/**
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* 上传文件的参数名
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*/
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name: {
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type: String,
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default: 'file'
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},
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/**
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* 最大文件大小(单位:M)
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*/
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maxFileSize: {
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type: Number,
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default: 10
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},
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/**
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* 上传图片格式,默认支持所有图片(image/*),指定格式示例:'.png,.jpg,.jpeg,.gif,.bmp'
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*/
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accept: {
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type: String,
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default: 'image/*'
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},
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/**
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* 自定义样式,用于设置组件的宽度和高度等其他样式
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*/
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style: {
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type: Object,
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default: () => {
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return {
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width: '150px',
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height: '150px'
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}
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}
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}
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})
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const modelValue = defineModel('modelValue', {
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type: String,
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default: () => ''
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})
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/**
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* 限制用户上传文件的格式和大小
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*/
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function handleBeforeUpload(file: UploadRawFile) {
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// 校验文件类型:虽然 accept 属性限制了用户在文件选择器中可选的文件类型,但仍需在上传时再次校验文件实际类型,确保符合 accept 的规则
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const acceptTypes = props.accept.split(',').map((type) => type.trim())
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// 检查文件格式是否符合 accept
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const isValidType = acceptTypes.some((type) => {
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if (type === 'image/*') {
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// 如果是 image/*,检查 MIME 类型是否以 "image/" 开头
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return file.type.startsWith('image/')
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} else if (type.startsWith('.')) {
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// 如果是扩展名 (.png, .jpg),检查文件名是否以指定扩展名结尾
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return file.name.toLowerCase().endsWith(type)
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} else {
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// 如果是具体的 MIME 类型 (image/png, image/jpeg),检查是否完全匹配
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return file.type === type
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}
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})
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if (!isValidType) {
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ElMessage.warning(`上传文件的格式不正确,仅支持:${props.accept}`)
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return false
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}
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// 限制文件大小
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if (file.size > props.maxFileSize * 1024 * 1024) {
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ElMessage.warning('上传图片不能大于' + props.maxFileSize + 'M')
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return false
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}
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return true
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}
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/*
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* 上传图片
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*/
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function handleUpload(options: UploadRequestOptions) {
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return new Promise((resolve, reject) => {
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const file = options.file
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const formData = new FormData()
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formData.append(props.name, file)
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// 处理附加参数
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Object.keys(props.data).forEach((key) => {
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formData.append(key, props.data[key])
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})
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FileAPI.upload(formData)
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.then((data) => {
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resolve(data)
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})
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.catch((error) => {
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reject(error)
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})
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})
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}
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/**
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* 预览图片
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*/
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function handlePreview() {
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console.log('预览图片,停止冒泡')
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}
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/**
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* 删除图片
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*/
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function handleDelete() {
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modelValue.value = ''
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}
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/**
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* 上传成功回调
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*
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* @param fileInfo 上传成功后的文件信息
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*/
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const onSuccess = (fileInfo: FileInfo) => {
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ElMessage.success('上传成功')
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modelValue.value = fileInfo.url
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}
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/**
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* 上传失败回调
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*/
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const onError = (error: any) => {
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console.log('onError')
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ElMessage.error('上传失败: ' + error.message)
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}
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</script>
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<style scoped lang="scss">
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:deep(.el-upload--picture-card) {
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position: relative;
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width: v-bind("props.style.width ?? '150px'");
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height: v-bind("props.style.height ?? '150px'");
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}
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.single-upload {
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&__image {
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border-radius: 6px;
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}
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&__delete-btn {
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position: absolute;
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top: 1px;
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right: 1px;
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font-size: 16px;
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color: #ff7901;
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cursor: pointer;
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background: #fff;
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border-radius: 100%;
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:hover {
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color: #ff4500;
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}
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}
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}
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</style>
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