struts2<s:iterator>遍历map(一)

2014-11-24 10:38:37 · 作者: · 浏览: 0
1.假使现在有这样一个Action:
Java代码
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.opensymphony.xwork2.ActionSupport
import com.model.Student
public class MapAction extends ActionSupport
{

private Map map;

private Map studentMap;

private Map arrayMap;

private Map> listMap;


public String testMap()
{
map=new HashMap();
map.put("1", "one");
map.put("2", "two");

studentMap=new HashMap();
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));

arrayMap=new HashMap();
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"});


listMap=new HashMap>();

List list1=new ArrayList();
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 list2=new ArrayList(); www.2cto.com
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);




return SUCCESS;

}

public Map getMap() {
return map;
}

public void setMap(Map map) {
this.map = map;
}

public Map getStudentMap() {
return studentMap;
}

public void setStudentMap(Map studentMap) {
this.studentMap = studentMap;
}

public Map getArrayMap() {
return arrayMap;
}


public void setArrayMap(Map arrayMap) {
this.arrayMap = arrayMap;
}


public Map> getListMap() {
return listMap;
}

public void setListMap(Map> listMap) {
this.listMap = listMap;
}


}
这个action中给出了各种类型的map,下面我们有这样一个 jsp,我们要将这些map展示到这个jsp中:
Jsp代码
<%@ page contentType="text/ html;charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>


struts2中的map遍历总结


1.map中的value为String字符串




key:

value:

******************************************




2.map中的value为Student对象





key=value ID num