文件上传
原本的文件上传是字符串，调整为JSON字符，同时加上表格展示和说明等扩展字段
第一步
复制原本的文件上传组件，并重命名
第二步
在main.js中进行引入和全局注册
第三步
调整文件上传代码
<template>
<div class="upload-file" style="width: 100%">
<el-upload
v-if="!props.showFlag"
style="float: right;display: inline-block"
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"
ref="fileUpload"
>
<!-- 上传按钮 -->
<el-button type="primary" size="small">新增</el-button>
</el-upload>
<!-- 上传提示 -->
<div class="el-upload__tip" v-if="showTip && !props.showFlag" style="display: inline-block;margin-top: -12px">
请上传
<template v-if="fileSize"> 大小不超过 <b style="color: rgba(245,108,108,0.84)">{{ fileSize }}MB</b></template>
<template v-if="fileType"> 格式为 <b style="color: rgba(245,108,108,0.84)">{{ fileType.join("/") }}</b></template>
的文件，数量限制
<template v-if="props.limit"><b style="color: rgba(245,108,108,0.84)">{{ props.limit }}</b></template>
个
</div>
<!-- 文件列表 -->
<el-table :data="fileList" style="width: 100%" border>
<el-table-column label="序号" type="index" min-width="40"/>
<el-table-column prop="name" label="名称" min-width="180" show-overflow-tooltip/>
<el-table-column label="链接" min-width="180" show-overflow-tooltip>
<template #default="scope">
<el-link type="primary" :underline="false" :href="baseUrl+scope.row.url">{{ baseUrl + scope.row.url }}
</el-link>
</template>
</el-table-column>
<el-table-column label="说明" min-width="180" show-overflow-tooltip>
<template #default="scope">
<el-input v-model="scope.row.remark" placeholder="" @change="updateRemark" :disabled="props.showFlag"/>
</template>
</el-table-column>
<el-table-column label="操作" min-width="60" v-if="!props.showFlag">
<template #default="scope">
<el-button
size="small"
type="danger"
@click="handleDelete(scope.row.index)"
>
删除
</el-button>
</template>
</el-table-column>
</el-table>
</div>
</template>
<script setup>
import {getToken} from "@/utils/auth";
const props = defineProps({
modelValue: [String, Object, Array],
// 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,
default: () => ["doc", "docx", "xls", "xlsx", "ppt", "txt", "pdf"],
},
// 是否显示提示
isShowTip: {
type: Boolean,
default: true
},
// 是否可以上传
showFlag: {
type: Boolean,
default: false
}
});
const {proxy} = getCurrentInstance();
const emit = defineEmits();
const number = ref(0);
const uploadList = ref([]);
const baseUrl = import.meta.env.VITE_APP_BASE_API;
const uploadFileUrl = ref(import.meta.env.VITE_APP_BASE_API + "/common/upload"); // 上传文件服务器地址
const headers = ref({Authorization: "Bearer " + getToken()});
const fileList = ref([]);
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 = JSON.parse(val);
// 然后将数组转为对象数组
fileList.value = list.map(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) {
// 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 ${props.limit} 个!`);
}
// 上传失败
function handleUploadError(err) {
proxy.$modal.msgError("上传文件失败");
}
// 上传成功回调
function handleUploadSuccess(res, file) {
if (res.code === 200) {
uploadList.value.push({name: res.originalFilename, url: res.fileName, remark: ''});
uploadedSuccessfully();
} else {
number.value--;
proxy.$modal.closeLoading();
proxy.$modal.msgError(res.msg);
proxy.$refs.fileUpload.handleRemove(file);
uploadedSuccessfully();
}
}
// 删除文件
function handleDelete(index) {
fileList.value.splice(index, 1);
// 修复element组件回带有uid和status字段问题
let list = fileList.value
for (let listElement of list) {
delete listElement.uid
delete listElement.status
}
emit("update:modelValue", JSON.stringify(list));
}
// 更新说明
function updateRemark() {
// 修复element组件回带有uid和status字段问题
let list = fileList.value
for (let listElement of list) {
delete listElement.uid
delete listElement.status
}
emit("update:modelValue", JSON.stringify(list));
}
// 上传结束处理
function uploadedSuccessfully() {
if (number.value > 0 && uploadList.value.length === number.value) {
fileList.value = fileList.value.filter(f => f.url !== undefined).concat(uploadList.value);
uploadList.value = [];
number.value = 0;
emit("update:modelValue", JSON.stringify(fileList.value));
proxy.$modal.closeLoading();
}
}
// 获取文件名称
function getFileName(name) {
// 如果是url那么取最后的名字 如果不是直接返回
if (name.lastIndexOf("/") > -1) {
return name.slice(name.lastIndexOf("/") + 1);
} else {
return name;
}
}
// 对象转成指定字符串分隔
function listToString(list, separator) {
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) : '';
}
</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>
