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
private Map
private Map
private Map
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.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.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
return map;
}
public void setMap(Map
this.map = map;
}
public Map
return studentMap;
}
public void setStudentMap(Map
this.studentMap = studentMap;
}
public Map
return arrayMap;
}
public void setArrayMap(Map
this.arrayMap = arrayMap;
}
public Map
return listMap;
}
public void setListMap(Map
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" %>
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 |