這篇文章給大家介紹怎么在Struts2中利用OGNL表達式對map進行遍歷，內(nèi)容非常詳細，感興趣的小伙伴們可以參考借鑒，希望對大家能有所幫助。

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一.Action中的代碼：MapAction.java

package com.zx.demo.action;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.opensymphony.xwork2.ActionSupport;
import com.zx.demo.model.Product;
import com.zx.demo.model.Student;
public class MapAction extends ActionSupport
{  
 private Map<String,String> map;
 private Map<String,Student> studentMap;
 private Map<String,String[]> arrayMap;
 private Map<String,List<Student>> listMap;  
 //這里省略get set方法
 public String testMap(){  
map=new HashMap<String,String>();
 map.put("1", "one");
 map.put("2", "two");
studentMap=new HashMap<String,Student>();
studentMap.put("student1",new Student(new Long(1),"20034140201","張三1","男",25));
studentMap.put("student2",new Student(new Long(2),"20034140202","張三2","女",26));
studentMap.put("student3",new Student(new Long(3),"20034140202","張三3","男",27));
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"});
listMap=new HashMap<String,List<Student>>();
  List<Student> list1=new ArrayList<Student>();
list1.add(new Student(new Long(1),"20034140201","張三1","男",25));
list1.add(new Student(new Long(2),"20034140202","張三2","男",25));
list1.add(new Student(new Long(3),"20034140203","張三3","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);
return SUCCESS;  
  }  
}

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