struts2中在迭代标签中如何使用test做判断条件

Question

<s:iterator value="list" id="d">
<tr>
<td>
${d.id }
</td>
<td>
${d.pid }
</td>
<td>
${d.name }
</td>
<td>
<a href="listDocumentCatalog.action?pid=${d.id }">进入</a>
</td>
<td>
<s:if test="%{d.order == 1}">
上移
</s:if>
<s:else>
<a href="adjustDocumentCatalog.action?pid=${d.pid }&order=${d.order}&style=up">上移</a>
</s:else>
｜
<s:if test="%{d.order == maxorder}">
下移
</s:if>
<s:else>
<a href="adjustDocumentCatalog.action?pid=${d.pid }&order=${d.order}&style=down">下移</a>
</s:else>

</td>
<td>
<a href="">修改</a>｜
<a href="">删除</a>
</td>
</tr>
</s:iterator>list 和 maxorder  在action中已有set和get方法
我做的是一个上下移动行记录的jsp页面，想在第一行记录去掉“上移”的链接，最后一行记录去掉“下移”的链接。但test为起作用我又做了另外修改，结果页面报500错误<s:iterator value="list" id="d">
<tr>
<td>
${d.id }
</td>
<td>
${d.pid }
</td>
<td>
${d.name }
</td>
<td>
<a href="listDocumentCatalog.action?pid=${d.id }">进入</a>
</td>
<td>
<s:set name="this_order" value=${d.order}></s:set>
<s:if test="%{this_order == 1}">
上移
</s:if>
<s:else>
<a href="adjustDocumentCatalog.action?pid=${d.pid }&order=${d.order}&style=up">上移</a>
</s:else>
｜
<s:if test="%{this_order == maxorder}">
下移
</s:if>
<s:else>
<a href="adjustDocumentCatalog.action?pid=${d.pid }&order=${d.order}&style=down">下移</a>
</s:else>

</td>
<td>
<a href="">修改</a>｜
<a href="">删除</a>
</td>
</tr>
</s:iterator>我刚学struts2，对标签库不算了解，请各位指点一下……

Answer 1

好像test中不能有EL表达式的吧

Answer 2

<s:iterator value="#list" var="ls">
取值：<s:property value="#ls[3]"/><s:if test="#ls[0]==#lls[1]">
这里做判断 是否相等。仅仅作为参考

Answer 3

 <s:if test="d.order == 1}">

Answer 4

<s:if test="d.order == 1">

Answer 5

没用啊，和<s:if test="{d.order == 1}">  一样，没有达到效果

Answer 6

没用啊，和<s:if test="${d.order == 1}"> 一样，没有达到效果上面一个写错了

Answer 7

你是遍历的一个集合吧，给段代码给你参考下：
<s:iterator value="authorityList" status="status" >
<s:set name="objid" value="authorityList[#status.index][0]"></s:set>
<s:set name="objname" value="authorityList[#status.index][1]"></s:set>
<s:set name="objtype" value="authorityList[#status.index][2]"></s:set>
<tr
id="tr_<s:property value="authorityList[#status.index][2]"/>_<s:property value="authorityList[#status.index][0]"/>">
<td >
<nobr>
<s:property value="authorityList[#status.index][1]" />
(
<s:if test="authorityList[#status.index][2]==1">
<s:text name="info.lbl.dept" />
</s:if>
<s:if test="authorityList[#status.index][2]==2">
<s:text name="info.lbl.user" />
</s:if>
)
<s:hidden name="objid" value="%{#objid}" />
<s:hidden name="objname" value="%{#objname}" />
<s:hidden name="objtype" value="%{#objtype}" />
</nobr>
</td>
<td class="td">
<input type="checkbox" name="add" value="1" 
<s:if test="authorityList[#status.index][3]==1">checked</s:if>>
</td>
<td class="td">
<input type="checkbox" name="edit" value="1"
<s:if test="authorityList[#status.index][4]==1">checked</s:if>>
</td>
<td class="td">
<input type="checkbox" name="del" value="1"
<s:if test="authorityList[#status.index][5]==1">checked</s:if>>
</td>
<td class="td">
<input type="checkbox" name="issue" value="1"
<s:if test="authorityList[#status.index][6]==1">checked</s:if>>
</td>
<td class="td" >
<input type="checkbox" name="approve" value="1"
<s:if test="authorityList[#status.index][7]==1">checked</s:if>>
    </td>
<td>
<button onclick="deleteObj('tr_<s:property value="authorityList[#status.index][2]"/>_<s:property value="authorityList[#status.index][0]"/>');" ><s:text name='btn.delete' /></button>
<!-- <input type="button" value="<s:text name="btn.delete"/>" icon="icon-cancel"-->
<!-- onclick="deleteObj('tr_<s:property value="authorityList[#status.index][2]"/>_<s:property value="authorityList[#status.index][0]"/>');" />-->
</td>
</tr>
</s:iterator>

Answer 8

<s:iterator end="list.size-1" id="i" begin="0" step="1">
<tr>
<td>
${list[i].id }
</td>
<td>
${list[i].pid }
</td>
<td>
${list[i].name }
</td>
<td>
<a href="listDocumentCatalog.action?pid=${list[i].id }">进入</a>
</td>
<td>
<s:set name="this_order" value=${d.order}></s:set>
<s:if test="${i>0}">
<a
href="adjustDocumentCatalog.action?pid=${list[i].pid }&order=${list[i].order}&style=up">上移</a>
</s:if>
｜
<s:if test="${i!=(list.size-1)}">
<a
href="adjustDocumentCatalog.action?pid=${list[i].pid }&order=${list[i].order}&style=down">下移</a>
</s:if> </td>
<td>
<a href="">修改</a>｜
<a href="">删除</a>
</td>
</tr>
</s:iterator>

Answer 9

<s:iterator end="list.size-1" id="i" begin="0" step="1">    <tr>
        <td>
            ${list[i].id }        </td>
        <td>
            ${list[i].pid }        </td>
        <td>
            ${list[i].name }        </td>
        <td>
            <a href="listDocumentCatalog.action?pid=${list[i].id }">进入</a>
        </td>
        <td>
            <s:set name="this_order" value="${list[i].order}"></s:set>            
            <s:if test="${i>0}">                <a
                    href="adjustDocumentCatalog.action?pid=${list[i].pid}&order=${list[i].order}&style=up">上移</a>
            </s:if>
            ｜            
            <s:if test="${i!=(list.size-1)}">                <a
                    href="adjustDocumentCatalog.action?pid=${list[i].pid }&order=${list[i].order}&style=down">下移</a>
            </s:if>        </td>
        <td>
            <a href="">修改</a>｜
            <a href="">删除</a>
        </td>
    </tr>
</s:iterator>

Answer 10

<s:iterator end="list.size-1" id="i" begin="0" step="1">    <tr>
        <td>
            ${list[i].id }        </td>
        <td>
            ${list[i].pid }        </td>
        <td>
            ${list[i].name }        </td>
        <td>
            <a href="listDocumentCatalog.action?pid=${list[i].id }">进入</a>
        </td>
        <td>
            <s:set name="this_order" value="${list[i].order}"></s:set>            
            <s:if test="${i>0}">                <a
                    href="adjustDocumentCatalog.action?pid=${list[i].pid}&order=${list[i].order}&style=up">上移</a>
            </s:if>
            ｜            
            <s:if test="${i!=(list.size-1)}">                <a
                    href="adjustDocumentCatalog.action?pid=${list[i].pid }&order=${list[i].order}&style=down">下移</a>
            </s:if>        </td>
        <td>
            <a href="">修改</a>｜
            <a href="">删除</a>
        </td>
    </tr>
</s:iterator>

Answer 11

<s:if test="%{#d.order == 1}">

Answer 12

<s:iterator value="list" id="d" status="status">
<tr>
<td>
${d.id }
</td>
<td>
${d.pid }
</td>
<td>
${d.name }
</td>
<td>
<a href="listDocumentCatalog.action?pid=${d.id }">进入</a>
</td>
<td>
<s:if test="%{#status.index == 0}">
上移
</s:if>
<s:else>
<a href="adjustDocumentCatalog.action?pid=${d.pid }&order=${d.order}&style=up">上移</a>
</s:else>
｜
<s:if test="%{#status.index == maxorder-1}">
下移
</s:if>
<s:else>
<a href="adjustDocumentCatalog.action?pid=${d.pid }&order=${d.order}&style=down">下移</a>
</s:else>

</td>
<td>
<a href="">修改</a>｜
<a href="">删除</a>
</td>
</tr>
</s:iterator>
下午看了一下《struts2详解》，看到一个可以解决的方法，用status属性判断当前迭代的索引，结果证明可以