vue3.0 ElementPlus 中文版入门教程 ElementPlus Upload 上传

2024-02-25 开发教程 vue3.0 ElementPlus 中文版入门教程 匿名 18

Upload 上传

通过点击或者拖拽上传文件

点击上传

只能上传 jpg/png 文件,且不超过 500kb

  • food.jpeg
  • food2.jpeg

通过 slot 你可以传入自定义的上传按钮类型和文字提示。可通过设置limit和on-exceed来限制上传文件的个数和定义超出限制时的行为。可通过设置before-remove来阻止文件移除操作。

<template>
<el-upload
class="upload-demo"
action="https://jsonplaceholder.typicode.com/posts/"
:on-preview="handlePreview"
:on-remove="handleRemove"
:before-remove="beforeRemove"
multiple
:limit="3"
:on-exceed="handleExceed"
:file-list="fileList"
>
<el-button size="small" type="primary">点击上传</el-button>
<template #tip>
<div class="el-upload__tip">只能上传 jpg/png 文件,且不超过 500kb</div>
</template>
</el-upload>
</template>
<script>
export default {
data() {
return {
fileList: [
{
name: 'food.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
{
name: 'food2.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
],
}
},
methods: {
handleRemove(file, fileList) {
console.log(file, fileList)
},
handlePreview(file) {
console.log(file)
},
handleExceed(files, fileList) {
this.$message.warning(
`当前限制选择 3 个文件,本次选择了 ${files.length} 个文件,共选择了 ${
files.length + fileList.length
} 个文件`
)
},
beforeRemove(file, fileList) {
return this.$confirm(`确定移除 ${file.name}?`)
},
},
}
</script>

用户头像上传

使用 before-upload 限制用户上传的图片格式和大小。

<template>
<el-upload
class="avatar-uploader"
action="https://jsonplaceholder.typicode.com/posts/"
:show-file-list="false"
:on-success="handleAvatarSuccess"
:before-upload="beforeAvatarUpload"
>
<img v-if="imageUrl" :src="imageUrl" class="avatar" />
<i v-else class="el-icon-plus avatar-uploader-icon"></i>
</el-upload>
</template>
<script>
export default {
data() {
return {
imageUrl: '',
}
},
methods: {
handleAvatarSuccess(res, file) {
this.imageUrl = URL.createObjectURL(file.raw)
},
beforeAvatarUpload(file) {
const isJPG = file.type === 'image/jpeg'
const isLt2M = file.size / 1024 / 1024 < 2
if (!isJPG) {
this.$message.error('上传头像图片只能是 JPG 格式!')
}
if (!isLt2M) {
this.$message.error('上传头像图片大小不能超过 2MB!')
}
return isJPG && isLt2M
},
},
}
</script>
<style>
.avatar-uploader .el-upload {
border: 1px dashed #d9d9d9;
border-radius: 6px;
cursor: pointer;
position: relative;
overflow: hidden;
}
.avatar-uploader .el-upload:hover {
border-color: #409eff;
}
.avatar-uploader-icon {
font-size: 28px;
color: #8c939d;
width: 178px;
height: 178px;
line-height: 178px;
text-align: center;
}
.avatar {
width: 178px;
height: 178px;
display: block;
}
</style>

照片墙

使用 list-type 属性来设置文件列表的样式。

<template>
<el-upload
action="https://jsonplaceholder.typicode.com/posts/"
list-type="picture-card"
:on-preview="handlePictureCardPreview"
:on-remove="handleRemove"
>
<i class="el-icon-plus"></i>
</el-upload>
<el-dialog v-model="dialogVisible">
<img width="100%" :src="dialogImageUrl" alt="" />
</el-dialog>
</template>
<script>
export default {
data() {
return {
dialogImageUrl: '',
dialogVisible: false,
}
},
methods: {
handleRemove(file, fileList) {
console.log(file, fileList)
},
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url
this.dialogVisible = true
},
},
}
</script>

文件缩略图

使用 scoped-slot 去设置缩略图模版。

<template>
<el-upload action="#" list-type="picture-card" :auto-upload="false">
<template #default>
<i class="el-icon-plus"></i>
</template>
<template #file="{file}">
<div>
<img class="el-upload-list__item-thumbnail" :src="file.url" alt="" />
<span class="el-upload-list__item-actions">
<span
class="el-upload-list__item-preview"
@click="handlePictureCardPreview(file)"
>
<i class="el-icon-zoom-in"></i>
</span>
<span
v-if="!disabled"
class="el-upload-list__item-delete"
@click="handleDownload(file)"
>
<i class="el-icon-download"></i>
</span>
<span
v-if="!disabled"
class="el-upload-list__item-delete"
@click="handleRemove(file)"
>
<i class="el-icon-delete"></i>
</span>
</span>
</div>
</template>
</el-upload>
<el-dialog v-model="dialogVisible">
<img width="100%" :src="dialogImageUrl" alt="" />
</el-dialog>
</template>
<script>
export default {
data() {
return {
dialogImageUrl: '',
dialogVisible: false,
disabled: false,
}
},
methods: {
handleRemove(file) {
console.log(file)
},
handlePictureCardPreview(file) {
this.dialogImageUrl = file.url
this.dialogVisible = true
},
handleDownload(file) {
console.log(file)
},
},
}
</script>

图片列表缩略图

<template>
<el-upload
class="upload-demo"
action="https://jsonplaceholder.typicode.com/posts/"
:on-preview="handlePreview"
:on-remove="handleRemove"
:file-list="fileList"
list-type="picture"
>
<el-button size="small" type="primary">点击上传</el-button>
<template #tip>
<div class="el-upload__tip">只能上传 jpg/png 文件,且不超过 500kb</div>
</template>
</el-upload>
</template>
<script>
export default {
data() {
return {
fileList: [
{
name: 'food.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
{
name: 'food2.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
],
}
},
methods: {
handleRemove(file, fileList) {
console.log(file, fileList)
},
handlePreview(file) {
console.log(file)
},
},
}
</script>

上传文件列表控制

通过 on-change 钩子函数来对列表进行控制

<template>
<el-upload
class="upload-demo"
action="https://jsonplaceholder.typicode.com/posts/"
:on-change="handleChange"
:file-list="fileList"
>
<el-button size="small" type="primary">点击上传</el-button>
<template #tip>
<div class="el-upload__tip">只能上传 jpg/png 文件,且不超过 500kb</div>
</template>
</el-upload>
</template>
<script>
export default {
data() {
return {
fileList: [
{
name: 'food.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
{
name: 'food2.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
],
}
},
methods: {
handleChange(file, fileList) {
this.fileList = fileList.slice(-3)
},
},
}
</script>

拖拽上传

将文件拖到此处,或点击上传只能上传 jpg/png 文件,且不超过 500kb

<template>
<el-upload
class="upload-demo"
drag
action="https://jsonplaceholder.typicode.com/posts/"
multiple
>
<i class="el-icon-upload"></i>
<div class="el-upload__text">将文件拖到此处,或<em>点击上传</em></div>
<template #tip>
<div class="el-upload__tip">只能上传 jpg/png 文件,且不超过 500kb</div>
</template>
</el-upload>
</template>

手动上传

只能上传 jpg/png 文件,且不超过 500kb

  • food.jpeg
  • food2.jpeg
<template>
<el-upload
class="upload-demo"
ref="upload"
action="https://jsonplaceholder.typicode.com/posts/"
:on-preview="handlePreview"
:on-remove="handleRemove"
:file-list="fileList"
:auto-upload="false"
>
<template #trigger>
<el-button size="small" type="primary">选取文件</el-button>
</template>
<el-button
style="margin-left: 10px;"
size="small"
type="success"
@click="submitUpload"
>上传到服务器</el-button
>
<template #tip>
<div class="el-upload__tip">只能上传 jpg/png 文件,且不超过 500kb</div>
</template>
</el-upload>
</template>
<script>
export default {
data() {
return {
fileList: [
{
name: 'food.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
{
name: 'food2.jpeg',
url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100',
},
],
}
},
methods: {
submitUpload() {
this.$refs.upload.submit()
},
handleRemove(file, fileList) {
console.log(file, fileList)
},
handlePreview(file) {
console.log(file)
},
},
}
</script>

Attribute

参数说明类型可选值默认值
action必选参数,上传的地址string
headers设置上传的请求头部object
multiple是否支持多选文件boolean
data上传时附带的额外参数object
name上传的文件字段名stringfile
with-credentials支持发送 cookie 凭证信息booleanfalse
show-file-list是否显示已上传文件列表booleantrue
drag是否启用拖拽上传booleanfalse
accept接受上传的文件类型(thumbnail-mode 模式下此参数无效)string
on-preview点击文件列表中已上传的文件时的钩子function(file)
on-remove文件列表移除文件时的钩子function(file, fileList)
on-success文件上传成功时的钩子function(response, file, fileList)
on-error文件上传失败时的钩子function(err, file, fileList)
on-progress文件上传时的钩子function(event, file, fileList)
on-change文件状态改变时的钩子,添加文件、上传成功和上传失败时都会被调用function(file, fileList)
before-upload上传文件之前的钩子,参数为上传的文件,若返回 false 或者返回 Promise 且被 reject,则停止上传。function(file)
before-remove删除文件之前的钩子,参数为上传的文件和文件列表,若返回 false 或者返回 Promise 且被 reject,则停止删除。function(file, fileList)
list-type文件列表的类型stringtext/picture/picture-cardtext
auto-upload是否在选取文件后立即进行上传booleantrue
file-list上传的文件列表, 例如: [{name: 'food.jpg', url: 'https://xxx.cdn.com/xxx.jpg'}]array[]
http-request覆盖默认的上传行为,可以自定义上传的实现function
disabled是否禁用booleanfalse
limit最大允许上传个数number
on-exceed文件超出个数限制时的钩子function(files, fileList)-

Slot

name说明
trigger触发文件选择框的内容
tip提示说明文字

Methods

方法名说明参数
clearFiles清空已上传的文件列表(该方法不支持在 before-upload 中调用)
abort取消上传请求( file: fileList 中的 file 对象 )
submit手动上传文件列表