ElementPlus Upload 上传

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=""
    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	string	—	file
with-credentials	支持发送 cookie 凭证信息	boolean	—	false
show-file-list	是否显示已上传文件列表	boolean	—	true
drag	是否启用拖拽上传	boolean	—	false
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	string	text/picture/picture-card	text
auto-upload	是否在选取文件后立即进行上传	boolean	—	true
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	boolean	—	false
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	—

作者：冒牌SEO，如若转载，请注明出处：https://www.web176.com/elementplus/19862.html