struts2的标签select

服务器端代码:

public void proSelect(){
  roleList = initLoginService.getRoleList();
  for(int i=0; i< roleList.size(); i++){
   roleMap.put(i+"", roleList.get(i).getRoleName());
  }
  HttpServletRequest request = ServletActionContext.getRequest ();
  request.setAttribute("roleMap", roleMap);
 }

jsp中代码：

<s:select label="登录方式" id="roleMap" name="roleMap" 
        list="roleMap" cssClass="login-text04">
      </s:select>