Ant Design Vue和VUE3下的upload组件使用以及文件预览
文章目录
- Ant Design Vue和VUE3下的upload组件使用以及文件预览
- 一、多文件上传
- 1.需求
- 2.样例
- 3.代码
- 二、单文件上传
- 1. 需求
- 2. 样例
- 3.代码
- 二、多文件上传产生的时间超时问题
- 三、文件系统名称更改
- 1. 修改文件`index.html`
- 2. 修改文件`index.js`
- 3. 修改数据库存储的系统名称
- 四、系统登陆后的首页更改
用到技术：Ant Design Vue、VUE3、xlsx的文件预览功能（也可预览txt，csv）
一、多文件上传
1.需求
- 可以多文件上传
- 文件先上传到本地，点击开始上传再通过后端接口继续上传
- 上传后显示全部、正确和错误的数据信息
- 上传后可以下载
注意细节：
- 最开始文件上传到本地时，右边页面不加载，当点击上传后，在右边未获取数据之前，
a.上传组件无法再次上传;
b:右边数据均处于加载中状态；
c.文件下载处于不可编辑状态- 加载出数据后，
a.上传组件可再次上传;
b.文件预览中的全部、正确和错误数据均需显示出对应的数据序号
c.正确和错误的数据，均不显示‘比对结果’，仅全部数据显示- 文件下载接口注意文件类型为‘blob’
2.样例
3.代码
<template>
<a-row :gutter="8">
<a-col :span="8">
<a-card title="文件上传">
<a-upload-dragger
v-model:fileList="fileList"
name="files"
accept=".txt"
:multiple="true"
:action="action"
:before-upload="beforeUpload"
:disabled="upLoadDisabled"
@remove="handleRemove"
:showUploadList="{
showRemoveIcon: true
}"
>
<p class="ant-upload-drag-icon">
<inbox-outlined></inbox-outlined>
</p>
<p class="ant-upload-text">点击或将文件拖拽到这里上传, 支持扩展名：.txt</p>
</a-upload-dragger>
<div style="text-align: right">
<a-button
type="primary"
:disabled="fileList.length === 0"
:loading="uploading"
style="margin-top: 16px"
@click="handleUpload"
>
{{ uploading ? '上传中' : '开始上传' }}
</a-button>
</div>
</a-card>
</a-col>
<a-col :span="16">
<a-card>
<a-spin :spinning="upLoadSpinning" tip="数据加载中...">
<a-row :gutter="16">
<a-col :span="12">
<a-statistic title="正确/错误(个)" :value="trueNum" class="demo-class">
<template #suffix>
<span>/{{ falseNum }}</span>
</template>
</a-statistic>
</a-col>
<a-col :span="12">
<a-statistic title="完善度" :value="wcdPercent" style="margin-right: 50px" />
</a-col>
</a-row>
</a-spin>
</a-card>
<a-card title="文件预览" style="margin-top: 5px">
<a-spin :spinning="upLoadSpinning" tip="数据加载中...">
<a-tabs v-model:activeKey="activeKey" type="card" @change="tabChange">
<a-tab-pane key="0">
<template #tab>
<div>全部</div>
</template>
<div style="padding-bottom: 20px; padding-top: 20px">
<div v-if="tableData0.length > 0">
<a-table :columns="columns" :data-source="tableData0" bordered> </a-table>
</div>
<div v-else>
<div class="emptyStyle"></div>
</div>
</div>
</a-tab-pane>
<a-tab-pane key="1">
<template #tab>
<div>正确</div>
</template>
<div style="padding-bottom: 20px; padding-top: 20px">
<div v-if="tableData1.length > 0">
<a-table :columns="columns1" :data-source="tableData1" bordered> </a-table>
</div>
<div v-else>
<div class="emptyStyle"></div>
</div>
</div>
</a-tab-pane>
<a-tab-pane key="2">
<template #tab>
<div>错误</div>
</template>
<div style="padding-bottom: 20px; padding-top: 20px">
<div v-if="tableData2.length > 0">
<a-table :columns="columns1" :data-source="tableData2" bordered> </a-table>
</div>
<div v-else>
<div class="emptyStyle"></div>
</div>
</div>
</a-tab-pane>
<template #rightExtra>
<a-button @click="fileDownloadBtn" type="primary" :disabled="fileDownload">文件下载</a-button>
</template>
</a-tabs>
</a-spin>
</a-card>
</a-col>
</a-row>
</template>
<script setup>
import { message } from 'ant-design-vue'
import sysConfig from '@/config'
import uploadApi from '@/api/auth/uploadApi'
import * as XLSX from 'xlsx'
import { clone } from 'lodash-es'
import fileApi from '@/api/dev/fileApi'
const props = defineProps({
action: {
type: String,
default: '/biz/file/upload',
required: false
}
})
const action = sysConfig.API_URL + props.action
const fileList = ref([])
const beforeUpload = (file) => {
fileList.value = [...(fileList.value || []), file]
return false
}
const handleRemove = (file) => {
const index = fileList.value.indexOf(file)
const newFileList = fileList.value.slice()
newFileList.splice(index, 1)
fileList.value = newFileList
}
const handleUpload = () => {
// 可预览
upLoadSpinning.value = true
upLoadDisabled.value = true
fileDownload.value = true
uploading.value = true
const fileData = new FormData()
fileList.value.forEach((item) => {
fileData.append('files', item.originFileObj)
})
uploadApi
.upload(fileData)
.then((res) => {
message.success(`文件上传成功`)
previewFile()
trueNum.value = res.trueNum
falseNum.value = res.falseNum
wcdPercent.value = res.wcdPercent
})
.catch(() => {
message.error(`文件上传失败`)
})
.finally(() => {
//开始上传按钮
uploading.value = false
//文件上传禁选择
upLoadDisabled.value = false
//可预览
upLoadSpinning.value = false
//可下载
fileDownload.value = false
})
}
const activeKey = ref('0')
const uploading = ref(false)
const upLoadSpinning = ref(true)
const upLoadDisabled = ref(true)
const tableData = ref([])
const tableData0 = ref([])
const tableData1 = ref([])
const tableData2 = ref([])
const columns = ref({})
const columns1 = ref({})
const previewFile = () => {
uploadApi
.download()
.then((res) => {
const reader = new FileReader()
reader.readAsBinaryString(res.data)
reader.onload = (ev) => {
try {
const data = ev.target.result
const wb = XLSX.read(data, {
type: 'binary',
cellText: false,
cellDates: true
})
const outdata = XLSX.utils.sheet_to_json(wb.Sheets[wb.SheetNames[0]])
let tableheader = outdata[0]
columns.value = [
{
title: '序号',
dataIndex: '序号',
key: '序号'
}
]
columns1.value = [
{
title: '序号',
dataIndex: '序号',
key: '序号'
}
]
for (let val in tableheader) {
if (val !== '__EMPTY') {
columns.value.push({
title: val,
dataIndex: val,
key: val
})
if (val !== '比对结果') {
columns1.value.push({
title: val,
dataIndex: val,
key: val
})
}
}
}
tableData.value = clone(outdata)
tabChange(activeKey.value)
} catch (e) {
return false
}
}
fileDownload.value = false
})
.catch((error) => {
console.log(error)
})
}
const tabChange = (key) => {
if (key === '0') {
const tableAll = tableData.value
tableAll.forEach((v, i) => {
v['序号'] = v.__EMPTY + 1
v = { ...v, key: i + 1 }
})
tableData0.value = tableAll
} else if (key === '1') {
const tableTrue = tableData.value.filter((item) => item['比对结果'] === 1)
tableTrue.forEach((v, i) => {
v['序号'] = i + 1
})
tableData1.value = tableTrue
} else if (key === '2') {
const tableFalse = tableData.value.filter((item) => item['比对结果'] === 0)
tableFalse.forEach((v, i) => {
v['序号'] = i + 1
})
tableData2.value = tableFalse
}
}
const fileDownload = ref(true)
const trueNum = ref(0)
const falseNum = ref(0)
const wcdPercent = ref(0)
const fileDownloadBtn = () => {
upLoadSpinning.value = true
upLoadDisabled.value = true
fileDownload.value = true
uploadApi
.download()
.then((res) => {
message.success('文件下载成功')
const blob = new Blob([res.data], { type: 'application/octet-stream;charset=UTF-8' })
const $link = document.createElement('a')
$link.href = URL.createObjectURL(blob)
// $link.download = 'xxx.xlsx'
$link.download = 'xxx.csv'
$link.click()
document.body.appendChild($link)
document.body.removeChild($link) // 下载完成移除元素
window.URL.revokeObjectURL($link.href) // 释放掉blob对象
//文件上传禁选择
upLoadDisabled.value = false
//可预览
upLoadSpinning.value = false
//可下载
fileDownload.value = false
})
.catch((error) => {
console.log(error)
})
}
onMounted(() => {
//文件上传禁选择
upLoadDisabled.value = false
//可预览
upLoadSpinning.value = false
})
</script>
<style scoped>
.emptyStyle {
height: 200px;
background-image: url(../../assets/images/empty1.png);
background-position: center;
background-repeat: no-repeat;
background-size: 200px 200px;
cursor: default;
}
</style>
二、单文件上传
1. 需求
- 单个文件上传
- 文件直接上传，直接调用后端接口
- 上传后显示全部、正确和错误的数据信息
- 上传后可以下载
注意细节：
- 文件上传未完成时，不可以再次上传，不可以下载，右边需要处于加载状态
- 文件再次上传后，原文件被覆盖，需要清除之前的fileList
- 文件下载接口注意类型为blob
2. 样例
3.代码
<template>
<a-row :gutter="8">
<a-col :span="8">
<a-card title="文件上传">
<a-upload-dragger
v-model:fileList="fileList"
name="files"
accept=".txt"
:multiple="false"
:action="action"
@change="handleChange"
:disabled="upLoadDisabled"
:showUploadList="{
showRemoveIcon: false
}"
>
<p class="ant-upload-drag-icon">
<inbox-outlined></inbox-outlined>
</p>
<p class=