我想比较两个值:一个来自session,另一个来自iterator
<s:iterator value="themes" status="currentRecord">
<s:if test="%{usertheme}) == %{themeName}">
<td align="center" bgcolor="red">
</s:if>
<s:else>
<td align="center" bgcolor="green">
</s:else>
</s:iterator>
但是我无法比较我的价值观,请你告诉我我在哪里犯错误?
答案 0 :(得分:8)
%{}
应该(如有必要)围绕所有陈述,而不是在中间。
对于字符串,您应该使用.equals
,.equalsIgnoreCase
,.contains
,.indexOf
等...不是==
。
更改为:
<s:iterator value="themes" status="currentRecord">
<s:if test="%{#session.usertheme.equalsIgnoreCase(themeName)}">
<td align="center" bgcolor="red">
</s:if>
<s:else>
<td align="center" bgcolor="yellow">
</s:else>
....
这也有效:
<s:if test="#session.usertheme.equalsIgnoreCase(themeName)">
答案 1 :(得分:5)
(不是答案,而是两个建议,我需要格式化; Andrea的回答是正确的。)
为了您自己和随后的人的理智,将JSP的那一部分变成一行:
<s:iterator value="themes">
<tr>
<s:set var="currTheme" value="%{userTheme == themeName ? 'red' : 'green'}"/>
<td bgcolor="${currTheme}">Cell content</td>
</tr>
</s:iterator>
考虑使用主题命名的CSS而不是内联CSS,并完全避免它:
td.theme1 {
background-color: red;
}
td.theme2 {
background-color: green;
}
td.theme3 {
background-color: #daa520;
}
(假设主题名为“theme1”,“theme2”,“theme3”,但这不相关。)
<table class="themed-table">
<s:iterator value="themes">
<tr>
<td class="${themeName}">Cell content</td>
</tr>
</s:iterator>
</table>
将样式信息“提升”到一个级别(例如table.theme1 td
)会更好,但是你明白了。这样做可以在主题信息的来源等方面提供很大的灵活性。
答案 2 :(得分:0)
<!--name attribute inside select tag must be a variable in action class with getter/setter -->
<!-- test variable sets the value of selected item in action class -->
<select name="test">
<!-- name attribute could be anything you want but value attribute must be a model class variable-->
<s:set name="lead_string_LS_ID" value="MasterDataModel.string_LS_ID" />
<!-- value attribute must be a list to iterate, status (an instanceof IteratorStatus will be pushed into stack upon each iteration)or result -->
<!-- var Name used to reference the value pushed into the Value Stack (my list contain leadSource_String_Id)-->
<s:iterator value="leadSource_list" status="result" var="leadSource_String_Id">
<!--#lead_string_LS_ID is value taken from <set> tag above. Note # must be in-front of the name
leadSource_String_Id is element specified in var of <iterator> tag
-->
<s:if test='(#lead_string_LS_ID.equals(leadSource_String_Id))'>
<option value="<s:property value='leadSource_String_Id'/>" selected="selected">
<s:property value="leadSource_String_Name" />
</option>
</s:if>
<s:else>
<option
value="<s:property value='leadSource_String_Id'/>">
<s:property value="leadSource_String_Name" />
</option>
</s:else>
</s:iterator>
</select>