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ElementPlus Upload 上傳

2021-09-24 20:18 更新

Upload 上傳

通過(guò)點(diǎn)擊或者拖拽上傳文件

點(diǎn)擊上傳

只能上傳 jpg/png 文件，且不超過(guò) 500kb

food.jpeg
food2.jpeg

通過(guò) slot 你可以傳入自定義的上傳按鈕類型和文字提示?？赏ㄟ^(guò)設(shè)置limit和on-exceed來(lái)限制上傳文件的個(gè)數(shù)和定義超出限制時(shí)的行為。可通過(guò)設(shè)置before-remove來(lái)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">點(diǎn)擊上傳</el-button>
  <template #tip>
    <div class="el-upload__tip">只能上傳 jpg/png 文件，且不超過(guò) 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(
          `當(dāng)前限制選擇 3 個(gè)文件，本次選擇了 ${files.length} 個(gè)文件，共選擇了 ${
            files.length + fileList.length
          } 個(gè)文件`
        )
      },
      beforeRemove(file, fileList) {
        return this.$confirm(`確定移除 ${file.name}？`)
      },
    },
  }
</script>

用戶頭像上傳

使用 before-upload 限制用戶上傳的圖片格式和大小。

<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.$message.error('上傳頭像圖片只能是 JPG 格式!')
        }
        if (!isLt2M) {
          this.$message.error('上傳頭像圖片大小不能超過(guò) 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>

照片墻

使用 list-type 屬性來(lái)設(shè)置文件列表的樣式。

<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>

文件縮略圖

使用 scoped-slot 去設(shè)置縮略圖模版。

<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>

圖片列表縮略圖

<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">點(diǎn)擊上傳</el-button>
  <template #tip>
    <div class="el-upload__tip">只能上傳 jpg/png 文件，且不超過(guò) 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>

上傳文件列表控制

通過(guò) on-change 鉤子函數(shù)來(lái)對(duì)列表進(jìn)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">點(diǎn)擊上傳</el-button>
  <template #tip>
    <div class="el-upload__tip">只能上傳 jpg/png 文件，且不超過(guò) 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>

拖拽上傳

將文件拖到此處，或點(diǎn)擊上傳只能上傳 jpg/png 文件，且不超過(guò) 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">將文件拖到此處，或<em>點(diǎn)擊上傳</em></div>
  <template #tip>
    <div class="el-upload__tip">只能上傳 jpg/png 文件，且不超過(guò) 500kb</div>
  </template>
</el-upload>
</template>

手動(dòng)上傳

只能上傳 jpg/png 文件，且不超過(guò) 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">選取文件</el-button>
  </template>
  <el-button
    style="margin-left: 10px;"
    size="small"
    type="success"
    @click="submitUpload"
    >上傳到服務(wù)器</el-button
  >
  <template #tip>
    <div class="el-upload__tip">只能上傳 jpg/png 文件，且不超過(guò) 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

參數(shù)	說(shuō)明	類型	可選值	默認(rèn)值
action	必選參數(shù)，上傳的地址	string	—	—
headers	設(shè)置上傳的請(qǐng)求頭部	object	—	—
multiple	是否支持多選文件	boolean	—	—
data	上傳時(shí)附帶的額外參數(shù)	object	—	—
name	上傳的文件字段名	string	—	file
with-credentials	支持發(fā)送 cookie 憑證信息	boolean	—	false
show-file-list	是否顯示已上傳文件列表	boolean	—	true
drag	是否啟用拖拽上傳	boolean	—	false
accept	接受上傳的文件類型（thumbnail-mode 模式下此參數(shù)無(wú)效）	string	—	—
on-preview	點(diǎn)擊文件列表中已上傳的文件時(shí)的鉤子	function(file)	—	—
on-remove	文件列表移除文件時(shí)的鉤子	function(file, fileList)	—	—
on-success	文件上傳成功時(shí)的鉤子	function(response, file, fileList)	—	—
on-error	文件上傳失敗時(shí)的鉤子	function(err, file, fileList)	—	—
on-progress	文件上傳時(shí)的鉤子	function(event, file, fileList)	—	—
on-change	文件狀態(tài)改變時(shí)的鉤子，添加文件、上傳成功和上傳失敗時(shí)都會(huì)被調(diào)用	function(file, fileList)	—	—
before-upload	上傳文件之前的鉤子，參數(shù)為上傳的文件，若返回 false 或者返回 Promise 且被 reject，則停止上傳。	function(file)	—	—
before-remove	刪除文件之前的鉤子，參數(shù)為上傳的文件和文件列表，若返回 false 或者返回 Promise 且被 reject，則停止刪除。	function(file, fileList)	—	—
list-type	文件列表的類型	string	text/picture/picture-card	text
auto-upload	是否在選取文件后立即進(jìn)行上傳	boolean	—	true
file-list	上傳的文件列表, 例如: [{name: 'food.jpg', url: 'https://xxx.cdn.com/xxx.jpg'}]	array	—	[]
http-request	覆蓋默認(rèn)的上傳行為，可以自定義上傳的實(shí)現(xiàn)	function	—	—
disabled	是否禁用	boolean	—	false
limit	最大允許上傳個(gè)數(shù)	number	—	—
on-exceed	文件超出個(gè)數(shù)限制時(shí)的鉤子	function(files, fileList)	—	-

Slot

name	說(shuō)明
trigger	觸發(fā)文件選擇框的內(nèi)容
tip	提示說(shuō)明文字

Methods

方法名	說(shuō)明	參數(shù)
clearFiles	清空已上傳的文件列表（該方法不支持在 before-upload 中調(diào)用）	—
abort	取消上傳請(qǐng)求	（ file: fileList 中的 file 對(duì)象）
submit	手動(dòng)上傳文件列表	—

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