Struts2 使用OGNL遍历map方法详解

2023-09-23 22:05:05 151

packagecom.zx.demo.action; importjava.util.ArrayList; importjava.util.HashMap; importjava.util.List; importjava.util.Map; importcom.opensymphony.xwork2.ActionSupport; importcom.zx.demo.model.Product; importcom.zx.demo.model.Student; publicclassMapActionextendsActionSupport { privateMapmap; privateMapstudentMap; privateMaparrayMap; privateMap>listMap; //这里省略getset方法 publicStringtestMap(){ map=newHashMap(); map.put("1","one"); map.put("2","two"); studentMap=newHashMap(); studentMap.put("student1",newStudent(newLong(1),"20034140201","张三1","男",25)); studentMap.put("student2",newStudent(newLong(2),"20034140202","张三2","女",26)); studentMap.put("student3",newStudent(newLong(3),"20034140202","张三3","男",27)); arrayMap=newHashMap(); arrayMap.put("arr1",newString[]{"1","2003401","leejie","male","20"}); arrayMap.put("arr2",newString[]{"2","2003402","huanglie","male","25"}); arrayMap.put("arr3",newString[{"3","2003403","lixiaoning","male","21"}); listMap=newHashMap>(); Listlist1=newArrayList(); list1.add(newStudent(newLong(1),"20034140201","张三1","男",25)); list1.add(newStudent(newLong(2),"20034140202","张三2","男",25)); list1.add(newStudent(newLong(3),"20034140203","张三3","男",25)); listMap.put("class1",list1); Listlist2=newArrayList(); list2.add(newStudent(newLong(1),"20034140301","李四1","男",20)); list2.add(newStudent(newLong(2),"20034140302","李四2","男",21)); list2.add(newStudent(newLong(3),"20034140303","李四3","男",22)); list2.add(newStudent(newLong(4),"20034140304","李四4","男",23)); listMap.put("class2",list2); returnSUCCESS; } }

<%@page contentType="text/html;charset=UTF-8" %> <%@taglibprefix="s" uri="/struts-tags"%> struts2中的map遍历总结 1.map中的key为String，value为String字符串

key:
value:
******************************************
key=value ID num name sex age ******************************************
2.map中的key为String，value为Student对象

key=value ID num name sex age ******************************************
3.map中的key为String，value为String数组

class ID num name sex age ******************************************
4.map中的key为String，value为list集合

Struts2 使用OGNL遍历map方法详解

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