关于struts2 遍历Map最全的总结
Struts2中iterator标签遍历map总结
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：
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?? ?<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
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?? ?<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>?