遍历 HashMap<String, ArrayList<String>>使用 Struts 2
我目前在使用 Struts2 和 s:iterate 标签时遇到了一些困难.
I am currently facing some difficulties with Struts2 and the s:iterate tag.
我想显示一个标签,它是 HashMap 中的键,然后是一个包含 ArrayList 中每个元素的表(HashMap 中的值),用于 HashMap 中的每个元素.
I want to display a label, which is the key in the HashMap, followed by a table (the value in the HashMap) containing every elements in the ArrayList, for each elements in the HashMap.
例如,
label
----------
| test1 |
----------
| test2 |
----------
label2
----------
| test1 |
----------
| test2 |
----------
我看到了很多关于 HashMap 的示例,但没有找到适合我的案例.
I saw a lot of example for an HashMap but didn't find one for my case.
我该怎么做?
谢谢,
推荐答案
<s:iterator value="map">
<h3><s:property value="key" /></h3>
<table>
<s:iterator value="value">
<tr><td><s:property /></td></tr>
</s:iterator>
</table>
</s:iterator>
map 的迭代器是 Map.Entry,它被放入值堆栈并具有两个访问器,getKey() 和 getValue().遍历打印键的条目,然后遍历打印值的值.(列表项被放在值堆栈的顶部,因此 s:property 只打印顶部.)
The iterator of a map is Map.Entry which gets put on the value stack and has two accessors, getKey() and getValue(). Iterate over Entry printing the key, then iterate over the values printing the value. (The list item gets put on top of the value stack so s:property just prints the top.)
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