struts2 doubleselect

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最近用struts2 开发的时候实现了动态的doubleselect菜单。在这里共享一下！

jsp:

<STYLE type="text/css">
.doubleselect br {
display: none;
}
</STYLE>
        <div class="doubleselect">
         <s:doubleselect list="gzzType" listKey="gzzlx"
          listValue="gzzmc1" doubleName="jcd.sId"
          doubleList="gzzMap.get(top.gzzlx)" doubleListKey="sid"
          doubleListValue="gzzmc1" theme="simple">
         </s:doubleselect>

java Action:

/**
*
*/
private static final long serialVersionUID = 1L;
private GzzLx gzz;
private List<GzzLx> gzzs;
private List<GzzLx> gzzType;
Map<Integer, List<GzzLx>> gzzMap;
private JiancedianService jcdService = new JiancedianService();
private Jiancedian jcd;
private List<Jiancedian> jcds;
private String gzzId;
private Login login;
private String stationGup;
private String jcdId;

public JiancedianAction() {
login = (Login) ActionContext.getContext().getSession().get("user");
stationGup = login.getStationGup();
}

public String selectJcd() throws Exception {
  this.jcds = jcdService.findById(jcd);
  doubleListValues();
  return SUCCESS;
}

public String updateJcd() throws Exception {
  jcdService.update(jcd);
  selectJcd();
  return SUCCESS;
}

public String selStaionName() throws Exception {
  doubleListValues();
  return SUCCESS;
}

public String selectByIdjcd() throws Exception {
  this.jcd = jcdService.selectByIdjcd(jcdId);
  selectJcd();
  return SUCCESS;
}

public String resetJcd() throws Exception {
  this.jcd = null;
  doubleListValues();
  return SUCCESS;
}
private void doubleListValues() {
  gzzMap = new HashMap<Integer, List<GzzLx>>();
  gzzType = new ArrayList<GzzLx>();
  for (int i = 1; i <= 4; i++) {
   gzzs = new ArrayList<GzzLx>();
   gzz = new GzzLx();
   gzzs = jcdService.selStaionName(stationGup, i);
   if (!gzzs.isEmpty()) {
    gzz.setGzzlx(i);
    if (i == 1) {
     gzz.setGzzmc1("1");
    } else if (i == 2) {
     gzz.setGzzmc1("2");
    } else if (i == 3) {
     gzz.setGzzmc1("3");
    } else {
     gzz.setGzzmc1("4");
    }
    gzzType.add(gzz);
    gzzMap.put(i, gzzs);
   }
  }
}