struts2一对多字段的遍历

例：留言板中在userlist.jsp页面循环遍历user时，同时把user所对应的留言显示出来

一、在model中

public class User{

 private Integer userId;

 private String username;

 private String password;

 private List listNote ;

……

   getter and setter

……

}

 

public class Note {

 private Integer noteId;

 private String date;

 private String content;

 private Integer userId;

 private List list;

 ……

 getter and setter

……

}

二、在Action中

public class UserAction{

  private User user;

  private UserService userService;

  private NoteService noteService;

  private List list ;

  ……

 getter and setter

  ……

 public String execute ()throws Exception{

   return listUser();

}

 

public String listUser(){

  list =userService.findAll();

  Iterator it=list .iterator();

 while(it.hasNext()){

  User temp=(User)it.next();

  List listNote=noteService.findByUserId(temp.getUserId());

  temp.setListNote (listNote);

}

}

}

三、userlist.jsp页面中

<s:iterator value="#request.list " id="user ">

 <tr>

 <td><s:property value="userId"/></td>

 <td><s:property value="username"/></td>

<td><s:property value="password"/></td>

</tr>

<s:iterator value="#user .listNote" id="note">

<tr>

 <td><s:property value="content"/></td>

</tr>

</s:iterator>

</s:iterator>