选择图片的弹窗组件-Toy模板网

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代码

<template>
  <el-dialog :visible.sync="dialogVisible" title="选择图片" width="50%">
    <el-upload
      class="upload-demo"
      :action="actionUrl"
      :headers="headers"
      :data="{ token: token }"
      :on-success="handleSuccess"
      :on-error="handleError"
      :on-remove="handleRemove"
      :file-list="fileList"
      :auto-upload="false"
      :before-upload="beforeUpload"
      :limit="limit"
      :accept="accept"
      :multiple="multiple"
    >
      <el-button size="small" type="primary">点击上传</el-button>
      <div slot="tip" class="el-upload__tip">只能上传{{ limit }}个文件，且不超过 {{ size }} MB</div>
    </el-upload>
    <div slot="footer" class="dialog-footer">
      <el-button @click="dialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="handleConfirm">确 定</el-button>
    </div>
  </el-dialog>
</template>

<script>
export default {
  name: 'ImageSelector',
  props: {
    actionUrl: String, // 上传图片的接口地址
    headers: Object, // 上传图片时需要携带的请求头部信息
    token: String, // 上传图片时需要携带的 token
    limit: { // 最多上传的图片数量
      type: Number,
      default: 1
    },
    size: { // 单张图片最大的大小，单位为 MB
      type: Number,
      default: 10
    },
    accept: { // 接受上传的图片类型
      type: String,
      default: 'image/*'
    },
    multiple: { // 是否支持多选
      type: Boolean,
      default: false
    },
    defaultList: { // 默认的图片列表
      type: Array,
      default: () => []
    }
  },
  data() {
    return {
      dialogVisible: false,
      fileList: []
    }
  },
  methods: {
    // 点击确定按钮
    handleConfirm() {
      this.$emit('confirm', this.fileList)
      this.dialogVisible = false
    },
    // 上传成功回调
    handleSuccess(response, file, fileList) {
      this.fileList = fileList
    },
    // 上传失败回调
    handleError(err, file, fileList) {
      this.$message.error('上传失败')
    },
    // 移除文件回调
    handleRemove(file, fileList) {
      this.fileList = fileList
    },
    // 上传前校验回调
    beforeUpload(file) {
      const isJPG = file.type === 'image/jpeg' || file.type === 'image/png'
      const isLt2M = file.size / 1024 / 1024 < this.size

      if (!isJPG) {
        this.$message.error('上传图片只能是 JPG/PNG 格式!')
        return false
      }
      if (!isLt2M) {
        this.$message.error(`上传图片大小不能超过 ${this.size} MB!`)
        return false
      }
      return true
    },
    // 打开弹窗
    openDialog() {
      this.dialogVisible = true
    },
    // 关闭弹窗
    closeDialog() {
      this.dialogVisible = false
    }
  },
  mounted() {
    this.fileList = this.defaultList
  }
}
</script>

<style>
.el-upload__tip {
  font-size: 12px;
}
</style>

如何使用

<template>
  <div>
    <el-button @click="openImageSelector">选择图片</el-button>
    <image-selector :actionUrl="uploadUrl" :defaultList="imageList" @confirm="handleImageSelect"></image-selector>
  </div>
</template>

<script>
import ImageSelector from './ImageSelector'

export default {
  components: {
    ImageSelector
  },
  data() {
    return {
      uploadUrl: 'http://localhost:8080/upload',
      imageList: []
    }
  },
  methods: {
    openImageSelector() {
      this.$refs.imageSelector.openDialog()
    },
    handleImageSelect(fileList) {
      this.imageList = fileList
    }
  }
}
</script>