vue Element组件上传文件-去掉文件列表_el-upload上传不要显示文件名

 <div style="float: right;display: inline-block">
   <form class="form-horizontal upload-block" id="upload">
     <el-upload
       class="upload-demo"
       ref="upload"
       action="/api/features/upload"
       :limit="1"
       accept='.xlsx'
       :on-success="uploadSuccess"
       :on-error="uploadError">
       <el-button size="small" type="primary" style="float: right;margin-left:10px;" class="taskBtn">点击上传</el-button>
       <!--        <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>-->
     </el-upload>
   </form>
 </div>
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javascript

	  //文件上传事件
      uploadSuccess(res) {
        console.log(res);
        this.$refs.upload.clearFiles(); //去掉文件列表
        this.$message({  //弹窗
          message: 'Excel导入成功',
          type: 'success',
          center: true,
          duration: 1000
        });
      },
      uploadError(res){
        console.log(res);
        this.$refs.upload.clearFiles(); //去掉文件列表
        this.$message({  //弹窗
          type: 'error',
          message: 'Excel导入失败！',
          center: true,
          duration: 1000
        });
      }
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