{getFieldDecorator('activityTimeStamp', {
                rules: [{ required: true, message: '请选择活动时间' }],
                initialValue: [
                  moment(updateDataSource.startTime),
                  moment(updateDataSource.endTime),
                ],
              })(<RangePicker format="YYYY-MM-DD HH:mm:ss" />)}

利用initialValue设置默认值