我发现当我使用$this->Form->submit时，submit按钮被包装在div. Form- group中。
echo $this->Form->submit('submit', array(
'div' => 'form-group',
'class' => 'btn btn-primary'
));
echo $this->Form->button('Reset', array('type'=>'reset' ,'class' => 'btn btn-primary'));
echo $this->Form->end();
您可以将div设置为false以禁用两个按钮上的换行div，然后只需手动回显div:
echo '<div>';
echo $this->Form->submit('submit', array(
'div' => false,
'class' => 'btn btn-primary'
));
echo $this->Form->button('Reset', array(
'type'=>'reset',
'class' => 'btn btn-primary'
'div' => false
));
echo '</div>';