struts2遍历map

针对以下几种情况的Map:

private Map<String,String> map;

private Map<String,Student> studentMap;

private Map<String,String[]> arrayMap;

private Map<String,List<Student>> listMap;

map=new HashMap<String,String>();

map.put("1", "one");

map.put("2", "two");
用法：

<s:iterator value="map" id="column">

<s:property value="#column"/><br>

key: <s:property value="key"/><br>

value:<s:property value="value"/><br>

</s:iterator>

studentMap=new HashMap<String,Student>();

studentMap.put("student1",new Student(new Long(1),"20034140201","张三1","男",25));

studentMap.put("student2",new Student(new Long(2),"20034140202","张三2","女",26));

studentMap.put("student3",new Student(new Long(3),"20034140202","张三3","男",27));

用法：

<s:iterator value="studentMap" id="column">

<tr>

<td><s:property value="#column"/></td>

<td><s:property value="value.id"/></td>

<td><s:property value="value.num"/></td>

<td><s:property value="value.name"/></td>

<td><s:property value="value.sex"/></td>

<td><s:property value="value.age"/></td>

</tr>

</s:iterator>

arrayMap=new HashMap<String,String[]>();

arrayMap.put("arr1", new String[]{"1","2003401","leejie","male","20"});

arrayMap.put("arr2", new String[]{"2","2003402","huanglie","male","25"});

arrayMap.put("arr3", new String[]{"3","2003403","lixiaoning","male","21"});

用法

<s:iterator value="arrayMap" id="column">

<tr>

<td><s:property value="#column"/></td>

<td><s:property value="value[0]"/></td>

<td><s:property value="value[1]"/></td>

<td><s:property value="value[2]"/></td>

<td><s:property value="value[3]"/></td>

<td><s:property value="value[4]"/></td>

</tr>

</s:iterator>

listMap=new HashMap<String,List<Student>>();

List<Student> list1=new ArrayList<Student>();

list1.add(new Student(new Long(1),"20034140201","张三1","男",25));

list1.add(new Student(new Long(2),"20034140202","张三2","男",25));

list1.add(new Student(new Long(3),"20034140203","张三3","男",25));

listMap.put("class1", list1);

List<Student> list2=new ArrayList<Student>();

list2.add(new Student(new Long(1),"20034140301","李四1","男",20));

list2.add(new Student(new Long(2),"20034140302","李四2","男",21));

list2.add(new Student(new Long(3),"20034140303","李四3","男",22));

list2.add(new Student(new Long(4),"20034140304","李四4","男",23));

listMap.put("class2", list2);
用法：

<s:iterator value="listMap" id="column">

<s:set name="total" value="#column.value.size"/>

<s:iterator value="#column.value" status="s">

<tr>

<s:if test="#s.first"><td rowspan="${total}"><s:property value="#column.key"/></td></s:if>

<td><s:property value="id"/></td>

<td><s:property value="num"/></td>

<td><s:property value="name"/></td>

<td><s:property value="sex"/></td>

<td><s:property value="age"/></td>

</tr>

</s:iterator>

</s:iterator>