Struts2は、コレクションにカプセル化されたデータを取得します

（1）封装到list集合
<form action="Structs11.action" method="post">
username:<input type="text" name="list[0]"> 
password:<input type= "text" name="list[1]"> 
<input type="submit" value="提交" >
</form>
public class GetList extends ActionSupport {
    
    
private List<String> list;
public List<String> getList() {
    
    
return list;
}
public void setList(List<String> list) {
    
    
this.list = list;
}
public String execute() {
    
    
System.out.println(list);
return SUCCESS;
}
}
（2）封装到map集合
<form action="Structs22.action" method="post">
username:<input type="text" name="map['one']"> 
password:<input type= "text" name="map['two']"> 
<input type="submit" value="提交" >
</form>
private Map<String,String> map;
public Map<String, String> getMap() {
    
    
return map;
}
public void setMap(Map<String, String> map) {
    
    
this.map = map;
}
public String execute() {
    
    
System.out.print(map);
return SUCCESS;
}