webapp / GreenwayWeb

  <template>
    <div class="component-upload-image">
      <div v-if="false" class="imgBox">
        <div
          v-for="item in fileList"
          :key="item.url"
          class="imgItem"

        >
          <div class="dot">X</div>
          <img
            :src="item.url"
          >
        </div>
      </div>
      <el-upload
        multiple
        :action="uploadFileUrl"
        list-type="picture-card"
        :on-success="handleUploadSuccess"
        :before-upload="handleBeforeUpload"
        :limit="limit"
        :on-error="handleUploadError"
        :on-exceed="handleExceed"
        name="file"
        :on-remove="handleRemove"
        :show-file-list="true"
        :headers="headers"
        :file-list="fileList"
        :on-preview="handlePictureCardPreview"
        :class="{hide: this.fileList.length >= this.limit}"
      >
        <i class="el-icon-plus" />
      </el-upload>
  
      <!-- 上传提示 -->
      <div
        v-if="showTip"
        slot="tip"
        class="el-upload__tip"
      >
        请上传
        <template v-if="fileSize"> 大小不超过 <b style="color: #3F9B6A">{{ fileSize }}MB</b></template>
        <template v-if="fileType"> 格式为 <b style="color: #3F9B6A">{{ fileType.join('/') }}</b></template>
        的文件
      </div>
  
      <el-dialog
        :visible.sync="dialogVisible"
        title="预览"
        width="800"
        append-to-body
      >

        <!--    <img

          :src="dialogImageUrl"
          style="display: block; width:200px; margin: 0 auto"
        > -->
        <el-image

          style="width: 360px; height: 180px"
          :src="dialogImageUrl"
          fit="fill"
        />

      </el-dialog>
    </div>
  </template>
  
  <script>
  // import { getAccessToken } from '@/utils/auth'

  import { uploadUrl, upurl } from '@/utils/request'

  export default {
    props: {
      value: [String, Object, Array],
      // 图片数量限制
      limit: {
        type: Number,
        default: 5
      },
      // 大小限制(MB)
      fileSize: {
        type: Number,
        default: 5
      },
      // 文件类型, 例如['png', 'jpg', 'jpeg']
      fileType: {
        type: Array,
        default: () => ['png', 'jpg', 'jpeg']
      },
      // 是否显示提示
      isShowTip: {
        type: Boolean,
        default: true
      }
    },
    data () {
      return {

        host: '',

        number: 0,
        uploadList: [],
        dialogImageUrl: '',
        dialogVisible: false,
        hideUpload: false,
        uploadFileUrl: uploadUrl, // 请求地址
        headers: { Authorization: '' }, // 设置上传的请求头部
        fileList: []
      }
    },
    computed: {
      // 是否显示提示
      showTip () {
        return this.isShowTip && (this.fileType || this.fileSize)
      }
    },
    watch: {
      value: {
        handler (val) {
          if (val) {
            // 首先将值转为数组
            const list = Array.isArray(val) ? val : this.value.split(',')
            // 然后将数组转为对象数组
            this.fileList = list.map(item => {
              if (typeof item === 'string') {

                item = { name: item, url: this.$hostUrl + item }

              }

              return item
            })

            console.log(this.fileList)

          } else {
            this.fileList = []
            return []
          }
        },
        deep: true,
        immediate: true
      }
    },

    onload () {

      this.host = window.location.host
    },
    methods: {
      // 删除图片
      handleRemove (file, fileList) {
        const findex = this.fileList.map(f => f.name).indexOf(file.name)
        if (findex > -1) {
          this.fileList.splice(findex, 1)
          this.$emit('input', this.listToString(this.fileList))
        }
      },
      // 上传成功回调
      handleUploadSuccess (res) {

        this.uploadList.push({ name: res.data, url: this.$hostUrl + res.data })
        console.log(this.uploadList)

        if (this.uploadList.length === this.number) {
          this.fileList = this.fileList.concat(this.uploadList)
          this.uploadList = []
          this.number = 0

          const c1 = this.listToString(this.fileList)
          this.$emit('input', c1)

          // this.$modal.closeLoading()
        }
      },
      // 上传前loading加载
      handleBeforeUpload (file) {
        let isImg = false
        if (this.fileType.length) {
          let fileExtension = ''
          if (file.name.lastIndexOf('.') > -1) {
            fileExtension = file.name.slice(file.name.lastIndexOf('.') + 1)
          }
          isImg = this.fileType.some(type => {
            if (file.type.indexOf(type) > -1) return true
            if (fileExtension && fileExtension.indexOf(type) > -1) return true
            return false
          })
        } else {
          isImg = file.type.indexOf('image') > -1
        }
  
        if (!isImg) {
          this.$message.error(`文件格式不正确, 请上传${this.fileType.join('/')}图片格式文件!`)
          return false
        }
        if (this.fileSize) {
          const isLt = file.size / 1024 / 1024 < this.fileSize
          if (!isLt) {
            this.$message.error(`上传头像图片大小不能超过 ${this.fileSize} MB!`)
            return false
          }
        }
        this.$message.warning('正在上传图片，请稍候...')
        this.number++
      },
      // 文件个数超出
      handleExceed () {
        this.$message.error(`上传文件数量不能超过 ${this.limit} 个!`)
      },
      // 上传失败
      handleUploadError () {
        this.$message.error('上传图片失败，请重试')
        // this.$modal.closeLoading()
      },
      // 预览
      handlePictureCardPreview (file) {
        this.dialogImageUrl = file.url
        this.dialogVisible = true
      },
      // 对象转成指定字符串分隔
      listToString (list, separator) {

        console.log(list)

        let strs = ''
        separator = separator || ','
        for (const i in list) {

          // strs += list[i].url.replace(this.$hostUrl, '') + separator

          strs += list[i].name + separator

        }
        return strs !== '' ? strs.substr(0, strs.length - 1) : ''
      }
    }
  }
  </script>
  <style
      scoped
      lang="scss"
  >
  // .el-upload--picture-card 控制加号部分
  ::v-deep.hide .el-upload--picture-card {
    display: none;
  }
  
  // 去掉动画效果
  ::v-deep .el-list-enter-active,
  ::v-deep .el-list-leave-active {
    transition: all 0s;
  }
  
  ::v-deep .el-list-enter, .el-list-leave-active {
    opacity: 0;
    transform: translateY(0);
  }
  
  .imgBox {
    display: flex;
    flex-wrap: wrap;
  
    .imgItem {
      position: relative;
      width: 100px;
      height: 100px;
      .dot {
        position: absolute;
        right: -10px;
        top: -10px;
        width: 20px;
        height: 20px;
        color: #fff;
        background-color: red;
        text-align: center;
        line-height: 20px;
        border-radius: 50%;
        cursor: pointer;
      }
  
      img {
        width: 100%;
        height: 100%;
        margin-right: 5px;
        margin-bottom: 5px;
        display: inline-block;
      }
    }
  }
  ::v-deep .el-upload--picture-card:hover, .el-upload:focus{
    border-color:#3F9B6A;
    color:#3F9B6A;
  }
  .el-upload__tip{
  
  }
  </style>