JSP如何实现,根据数据库内容验证登录信息是否存在
<form action="${ctx }/add/addBlock.do" name="addBlock" method="post">
<ul class="addUl">
<li class="addLi1">
版块名称:
</li>
<li class="addLi2">
<input name="blockName" id="blockName" maxlength="15" />
</li>
</ul>
<ul class="addUl">
<li class="addLi1">
客户代码:
</li>
<li class="addLi2">
<input name="userCode" id="userCode" maxlength="10" />
</li>
</ul>
<ul class="addUl">
<li class="addLi2">
<input type="submit" value="提交" />
</li>
</ul>
<form>