vue使用Element el-upload 组件踩坑记

 <el-upload
            action="https://xxxx地址"
            :headers="importHeaders"
          >
   </el-upload>
 
import {getToken} from '@/utils/token'
 
 
data() {
    return {
      importHeaders: {token: getToken()},
    };
  },

 <el-upload
            action="https://security.brofirst.cn/api/common/upload"
            :headers="importHeaders"
            :limit="limit"
             :on-exceed="masterFileMax"
          >
            <i class="el-icon-plus"></i>
          </el-upload>
 
 
 
  // 最多上传几张图片
    masterFileMax(files, fileList) {
        console.log(files, fileList);
        this.$message.warning(`请最多上传 ${this.limit} 个文件。`);
    },

  <el-upload
             accept=".JPG, .PNG, .JPEG,.jpg, .png, .jpeg"
             multiple
          >
            <i class="el-icon-plus"></i>
          </el-upload>

   <el-upload
            action="https://xxxx"
            :headers="importHeaders"
            list-type="picture-card"
            :on-preview="handlePictureCardPreview"
            :on-remove="handleRemove"
            :on-success="handleAvatarSuccess"
            :limit="limit"
             :on-exceed="masterFileMax"
             accept=".JPG, .PNG, .JPEG,.jpg, .png, .jpeg"
             multiple
          >
            <i class="el-icon-plus"></i>
          </el-upload>
 
 
 
<script>
import {getToken} from '@/utils/token'
export default {
  name:'feedback',
  data() {
    return {
      importHeaders: {token: getToken()},
       images:[],
      limit:9
    };
  },
  methods: {
  //删除图片
    handleRemove(file, fileList) {
     const idx= this.images.findIndex(it=>it===file.response.data.fullurl)
     this.images.splice(idx,1)
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url;
      this.dialogVisible = true;
    },
    // 上传成功后的数据
    handleAvatarSuccess(response, file, fileList){
      console.log(response, file, fileList);
      if(response.code===1){
        this.images.push(response.data.fullurl)
      }
    },
    // 最多上传几张图片
    masterFileMax(files, fileList) {
        console.log(files, fileList);
        this.$message.warning(`请最多上传 ${this.limit} 个文件。`);
    }
  }
};
</script>

<el-upload
               v-else
               class='ensure ensureButt'
               :action="importFileUrl"
               :data="upLoadData"
               name="importfile"
               :onError="uploadError"
               :onSuccess="uploadSuccess"
               :beforeUpload="beforeAvatarUpload"
               >
               <el-button size="small" type="primary">确定</el-button>

data () {
    importFileUrl: 'http:dtc.com/cpy/add',
    upLoadData: {
        cpyId: '123456', 
        occurTime: '2017-08'
    }
},
methods: {
    // 上传成功后的回调
    uploadSuccess (response, file, fileList) {
      console.log('上传文件', response)
    },
    // 上传错误
    uploadError (response, file, fileList) {
      console.log('上传失败，请重试！')
    },
    // 上传前对文件的大小的判断
    beforeAvatarUpload (file) {
      const extension = file.name.split('.')[1] === 'xls'
      const extension2 = file.name.split('.')[1] === 'xlsx'
      const extension3 = file.name.split('.')[1] === 'doc'
      const extension4 = file.name.split('.')[1] === 'docx'
      const isLt2M = file.size / 1024 / 1024 < 10
      if (!extension && !extension2 && !extension3 && !extension4) {
        console.log('上传模板只能是 xls、xlsx、doc、docx 格式!')
      }
      if (!isLt2M) {
        console.log('上传模板大小不能超过 10MB!')
      }
      return extension || extension2 || extension3 || extension4 && isLt2M
    }
}