element ui 上传图片并显示

              <el-upload
                action="/"
                :show-file-list="false"
                :http-request="uploadKinSign"
              >

　　

    uploadKinSign({ file }) {
      const url = URL.createObjectURL(file);
      this.kinsfolkSignature = {
        blob: file,
        imgUrl: url,
        isShowImg: true,
      };
    },