1  package com.zx.demo.action; 2 import java.util.ArrayList; 3 import java.util.HashMap; 4 import java.util.List; 5 import java.util.Map; 6 import com.opensymphony.xwork2.ActionSupport; 7 import com.zx.demo.model.Product; 8 import com.zx.demo.model.Student; 9 public class MapAction extends ActionSupport10 {11     private Map
     
       map;12    13     private Map
      
        studentMap;14     15     private Map
       
         arrayMap;16     17     private Map
        
         
          > listMap;18     19     public String testMap()20     {21         map=new HashMap
          
           ();22 map.put("1", "one");23 map.put("2", "two");24 25 studentMap=new HashMap
           
            ();26 studentMap.put("student1",new Student(new Long(1),"20034140201","张三1","男",25));27 studentMap.put("student2",new Student(new Long(2),"20034140202","张三2","女",26));28 studentMap.put("student3",new Student(new Long(3),"20034140202","张三3","男",27));29 30 arrayMap=new HashMap
            
             ();31 arrayMap.put("arr1", new String[]{"1","2003401","leejie","male","20"});32 arrayMap.put("arr2", new String[]{"2","2003402","huanglie","male","25"});33 arrayMap.put("arr3", new String[]{"3","2003403","lixiaoning","male","21"});34 35 36 37 listMap=new HashMap
             
              
               >();38 39 List
               
                 list1=new ArrayList
                
                 ();40 list1.add(new Student(new Long(1),"20034140201","张三1","男",25));41 list1.add(new Student(new Long(2),"20034140202","张三2","男",25));42 list1.add(new Student(new Long(3),"20034140203","张三3","男",25));43 listMap.put("class1", list1);44 45 List
                 
                   list2=new ArrayList
                  
                   ();46 list2.add(new Student(new Long(1),"20034140301","李四1","男",20));47 list2.add(new Student(new Long(2),"20034140302","李四2","男",21));48 list2.add(new Student(new Long(3),"20034140303","李四3","男",22));49 list2.add(new Student(new Long(4),"20034140304","李四4","男",23));50 listMap.put("class2", list2);51 52 53 54 55 return SUCCESS;56 57 }58 59 60 public Map
                   
                     getMap() {61 return map;62 }63 public void setMap(Map
                    
                      map) {64 this.map = map;65 }66 67 public Map
                     
                       getStudentMap() {68 return studentMap;69 }70 public void setStudentMap(Map
                      
                        studentMap) {71 this.studentMap = studentMap;72 }73 public Map
                       
                         getArrayMap() {74 return arrayMap;75 }76 public void setArrayMap(Map
                        
                          arrayMap) {77 this.arrayMap = arrayMap;78 }79 public Map
                         
                          > getListMap() {80 return listMap;81 }82 public void setListMap(Map
                          
                           > listMap) {83 this.listMap = listMap;84 }85 86 87 }
                          
                         
                        
                       
                      
                     
                    
                   
                  
                 
                
               
              
             
            
           
          
         
        
       
      
     

1  <%@ page contentType="text/html;charset=UTF-8" %> 2 <%@ taglib prefix="s" uri="/struts-tags" %> 3  4  5  6  7  8    1.map中的value为String字符串
 9    
     
      10    
      
      
11    key: 
      
      
12    value:
      
      
13    ******************************************
      
14   
     15  16  17   2.map中的value为Student对象18   
     
      28     
     
     
      19     
        20       
21       
22       
23       
24       
25       
26     
27     
        29      
30      
31      
32      
33      
34      
35     
36     37   
      
       
        
key=value
        
ID
        
num
        
name
        
sex
        
age
       
       
        
         
        
         
        
         
        
         
        
         
        
         
       
      
     
38   
39   40   41   3.map中的value为String数组42   
     
      52     
     
     
      43     
        44       
45       
46       
47       
48       
49       
50     
51     
        53      
54      
55      
56      
57      
58      
59     
60     61   
      
       
        
key=value
        
ID
        
num
        
name
        
sex
        
age
       
       
        
         
        
         
        
         
        
         
        
         
        
         
       
      
     
62   
63   4.map中的value为list集合64   
     
      75      
      76      
      
       77       
      
     
     
     
      65     
        66       
67       
68       
69       
70       
71       
72     
73     74    
        78         
79         
80         
81         
82         
83         
84       
85      86   87  
      
       
        
class
        
ID
        
num
        
name
        
sex
        
age
       
       
        
         
        
         
        
         
        
         
        
         
        
         
       
      
     
88   89   90 91