constructor(props) {

    super(props);

    /*

    * 构建导出数据的初始参数，结合用户下拉选择后动态设置参数值

    * */

    this.state = {

      btnStatus: false,

      dateStart: '',

      dateEnd: '',

      currentType: 2,

    };

  }

props:{

            onChange: (value)=>{

              console.log('value',value);

              if(value !== '-1'){

                this.setState({btnStatus: true});

              }else if(value === '-1'){

                this.setState({btnStatus: false});

              }

            }

          }

<a href="/assets/templatefile/XXX.xlsx" style={{float: 'right',paddingRight: '20px'}}>

                    {this.state.btnStatus===false ? <Button type="button" disabled className="ant-btn-primary ant-btn-lg"><span>批量导出</span></Button>

                    : <Button type="button" className="ant-btn-primary ant-btn-lg"><span>批量导出</span></Button>}

                  </a>