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<s:if test="#ll!=null">
<s:if test="#ll.content==null">
<td> </td>
</s:if>
<s:else>
<td colspan="#ll.colspan" rowspan="#ll.rowspan">${ll.content }</td>
</s:else>
</s:if>
if里面不等是不是用!=啊 太久没用搞了~~~~~
<table width="100%">
<tr>
<th width="20px"></th>
<th width="20px"></th>
<td colspan="7" rowspan="9">
<table width="100%">
<tr>
<th>星期一</th>
<th>星期二</th>
<th>星期三</th>
<th>星期四</th>
<th>星期五</th>
<th>星期六</th>
<th>星期日</th>
</tr>
<s:iterator value="lessons" var="l">
<tr>
<s:iterator value="#l" var="ll">
<s:if test="#ll!=null">
<s:if test="#ll.content==null">
<td colspan="#ll.colspan" rowspan="#ll.rowspan"> </td>
</s:if>
<s:else>
<td>${ll.content }</td>
</s:else>
</s:if>
<s:else>
</s:else>
</s:iterator>
</tr>
</s:iterator>
</table>
</td>
</tr>
<tr>
<td rowspan="4" width="20px">上午</td>
<td>一</td>
</tr>
<tr>
<td>二</td>
</tr>
<tr>
<td>三</td>
</tr>
<tr>
<td>四</td>
</tr>
<tr>
<td rowspan="4" width="20px">上午</td>
<td>五</td>
</tr>
<tr>
<td>六</td>
</tr>
<tr>
<td>七</td>
</tr>
<tr>
<td>八</td>
</tr>
</table>