bj-maritime-dcds-web/src/components/FileUpload/index.vue

<template>
	<div class="upload-file">
		<el-upload
			ref="fileUpload"
			multiple
			:action="uploadFileUrl"
			:before-upload="handleBeforeUpload"
			:file-list="fileList"
			:limit="limit"
			:on-error="handleUploadError"
			:on-exceed="handleExceed"
			:on-success="handleUploadSuccess"
			:show-file-list="false"
			:headers="headers"
			class="upload-file-uploader"
		>
			<!-- 上传按钮 -->
			<el-button type="primary">{{ btnText }}</el-button>
		</el-upload>
		<!-- 上传提示 -->
		<div v-if="showTip" class="el-upload__tip">
			请上传
			<template v-if="fileSize">
				大小不超过 <b style="color: #f56c6c">{{ fileSize }}MB</b>
			</template>
			<template v-if="fileType">
				格式为 <b style="color: #f56c6c">{{ fileType.join('/') }}</b>
			</template>
			的文件
		</div>
		<!-- 文件列表 -->
		<!-- <transition-group
            class="upload-file-list el-upload-list el-upload-list--text"
            name="el-fade-in-linear"
            tag="ul"
            v-if="showFileList"
        >
            <li
                v-for="(file, index) in fileList"
                :key="file.uid"
                class="el-upload-list__item ele-upload-list__item-content"
            >
                <el-link :href="`${baseUrl}${file.url}`" :underline="false" target="_blank">
                    <span class="el-icon-document"> {{ getFileName(file.name) }} </span>
                </el-link>
                <div class="ele-upload-list__item-content-action">
                    <el-link :underline="false" type="danger" @click="handleDelete(index)">删除</el-link>
                </div>
            </li>
        </transition-group> -->
	</div>
</template>

<script setup lang="ts">
import { getToken } from '@/utils/auth';
import { ElMessage } from 'element-plus';
import { getCurrentInstance, ComponentInternalInstance, ref, computed, watch } from 'vue';

const props = defineProps({
	modelValue: [String, Object, Array] as any,
	// 数量限制
	limit: {
		type: Number,
		default: 5,
	},
	// 大小限制(MB)
	fileSize: {
		type: Number,
		default: 5,
	},
	// 文件类型, 例如['png', 'jpg', 'jpeg']
	fileType: {
		type: Array as () => Array<any>,
		default: () => ['doc', 'xls', 'ppt', 'txt', 'pdf'],
	},
	// 是否显示提示
	isShowTip: {
		type: Boolean,
		default: true,
	},
	action: {
		type: String,
		default: 'business/common/upload',
	},
	// 按钮文字
	btnText: {
		type: String,
		default: '点击上传文件',
	},
	// 文件列表是否显示
	showFileList: {
		type: Boolean,
		default: true,
	},
});
const { proxy } = getCurrentInstance() as ComponentInternalInstance;
const emit = defineEmits(['update:modelValue', 'handleSuccess']);
const number = ref(0);
const uploadList = ref<any[]>([]);
const baseUrl = import.meta.env.VITE_APP_BASE_API;
const uploadFileUrl = ref(import.meta.env.VITE_APP_BASE_API + props.action); // 上传文件服务器地址
const headers = ref({ Authorization: 'Bearer ' + getToken() });
const fileList = ref<any[]>([]);
const showTip = computed(() => props.isShowTip && (props.fileType || props.fileSize));

watch(
	() => props.modelValue,
	val => {
		if (val) {
			let temp = 1;
			// 首先将值转为数组
			const list = Array.isArray(val) ? val : props.modelValue!.split(',');
			// 然后将数组转为对象数组
			fileList.value = list.map((item: any) => {
				if (typeof item === 'string') {
					item = { name: item, url: item };
				}
				item.uid = item.uid || new Date().getTime() + temp++;
				return item;
			});
		} else {
			fileList.value = [];
			return [];
		}
	},
	{ deep: true, immediate: true }
);

// 上传前校检格式和大小
function handleBeforeUpload(file: any) {
	// 校检文件类型
	if (props.fileType.length) {
		const fileName = file.name.split('.');
		const fileExt = fileName[fileName.length - 1];
		const isTypeOk = props.fileType.indexOf(fileExt) >= 0;
		if (!isTypeOk) {
			proxy!.$modal.msgError(`文件格式不正确, 请上传${props.fileType.join('/')}格式文件!`);
			return false;
		}
	}
	// 校检文件大小
	if (props.fileSize) {
		const isLt = file.size / 1024 / 1024 < props.fileSize;
		if (!isLt) {
			proxy!.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
			return false;
		}
	}
	proxy!.$modal.loading('正在上传文件，请稍候...');
	number.value++;
	return true;
}

// 文件个数超出
function handleExceed() {
	proxy!.$modal.msgError(`上传文件数量不能超过 ${props.limit} 个!`);
}

// 上传失败
function handleUploadError(err: any) {
	proxy!.$modal.msgError('上传文件失败');
	proxy!.$modal.closeLoading();
}

// 上传成功回调
function handleUploadSuccess(res: any, file: any) {
	if (res.code === 200) {
		uploadList.value.push({ name: res.fileName, url: res.fileName });
		uploadedSuccessfully();
		emit('handleSuccess', res);
		ElMessage.success(res.msg || '上传成功');
	} else {
		number.value--;
		proxy!.$modal.closeLoading();
		proxy!.$modal.msgError(res.msg);
		(proxy!.$refs.fileUpload as any).handleRemove(file);
		uploadedSuccessfully();
	}
}
// 清空列表
function clearList() {
	(proxy!.$refs.fileUpload as any).clearFiles();
}
// 删除文件
function handleDelete(index: any) {
	fileList.value.splice(index, 1);
	emit('update:modelValue', listToString(fileList.value));
}

// 上传结束处理
function uploadedSuccessfully() {
	if (number.value > 0 && uploadList.value.length === number.value) {
		fileList.value = fileList.value.filter(f => f.url !== undefined).concat(uploadList.value);
		uploadList.value = [];
		number.value = 0;
		emit('update:modelValue', listToString(fileList.value));
		proxy!.$modal.closeLoading();
	}
}

// 获取文件名称
function getFileName(name: any) {
	if (name.lastIndexOf('/') > -1) {
		return name.slice(name.lastIndexOf('/') + 1);
	} else {
		return '';
	}
}

// 对象转成指定字符串分隔
function listToString(list: any, separator?: any) {
	let strs = '';
	separator = separator || ',';
	for (let i in list) {
		if (list[i].url) {
			strs += list[i].url + separator;
		}
	}
	return strs !== '' ? strs.substr(0, strs.length - 1) : '';
}

defineExpose({
	handleClea: clearList,
});
</script>

<style scoped lang="scss">
.upload-file-uploader {
	margin-bottom: 5px;
}
.upload-file-list .el-upload-list__item {
	border: 1px solid #e4e7ed;
	line-height: 2;
	margin-bottom: 10px;
	position: relative;
}
.upload-file-list .ele-upload-list__item-content {
	display: flex;
	justify-content: space-between;
	align-items: center;
	color: inherit;
}
.ele-upload-list__item-content-action .el-link {
	margin-right: 10px;
}
</style>