Question

struts2标签赋值问题

<s:iterator value="#session.bookList" id="mybook">
<tr>
<A href="showBooks.action?ISBN=${#mybook.ISBN }">
<td>
<s:property value="#mybook.title" />
</td>
<td>
<s:property value="#mybook.ISBN" />
</td>
<td>
<s:property value="#mybook.categoryid" />
</td>
<td>
<s:property value="#mybook.authorid" />
</td>
<td>
<s:property value="#mybook.press" />
</td>
<td>
<s:property value="#mybook.yearpublished" />
</td>
<td>
<s:property value="#mybook.price" />
</td>
<td>
<s:property value="#mybook.numberabailable" />
</td>
<td>
<s:property value="#mybook.soldout" />
</td>
</A>
</tr>

</s:iterator>
请问<A href="showBooks.action?ISBN=${#mybook.ISBN }">的ISBN=${#mybook.ISBN }赋值正确吗？如果错误，那应该怎样改？

Answer 1

首先要明白一点，在struts2标签中不支持EL表达式，要么在struts2标签中使用OGNL表达式，要么在JSTL标签或一般标签(html)中使用EL表达式，这是页面提供给我们的两种选择
<s:a href="showBooks.action?ISBN=<s:property value='#mybook.ISBN' />>
<s:property value='#mybook.ISBN' />
</s:a>
或者
<a href = "showBooks.action?ISBN=${mybook.ISBN}" />

Answer 2

ISBN=${#mybook.ISBN }赋值不正确，你假如要用EL表达式的话，就是ISBN=${mybook.ISBN }
如果用ognl表达式的话ISBN=<s:property value='#mybook.ISBN' />

Answer 3

<A href="showBooks.action?ISBN=<s:property value='#mybook.ISBN' />">

Answer 4

去掉#即可