JSTL应用----下拉列表

àì夳堔傛蜴生んèń 2022-06-17 10:47 217阅读 0赞

1.Controller
    
     @Controller
     @RequestMapping(value="/user")
     public class UserController extends BaseController {
    	
    	String menuUrl = "user/listUsers.do"; //菜单地址(权限用)
    	@Resource(name="userService")
    	private UserService userService;
    	@Resource(name="roleService")
    	private RoleService roleService;
    	@Resource(name="menuService")
    	private MenuService menuService;
      /**
    	 * 显示用户列表(用户组)
    	 */
    	@RequestMapping(value="/listUsers")
    	public ModelAndView listUsers(Page page)throws Exception{
    		ModelAndView mv = this.getModelAndView();
    		PageData pd = new PageData();
    		pd = this.getPageData();
    		
    		String USERNAME = pd.getString("USERNAME");
    		
    		if(null != USERNAME && !"".equals(USERNAME)){
    			USERNAME = USERNAME.trim();
    			pd.put("USERNAME", USERNAME);
    		}
    		
    		String lastLoginStart = pd.getString("lastLoginStart");
    		String lastLoginEnd = pd.getString("lastLoginEnd");
    		
    		if(lastLoginStart != null && !"".equals(lastLoginStart)){
    			lastLoginStart = lastLoginStart+" 00:00:00";
    			pd.put("lastLoginStart", lastLoginStart);
    		}
    		if(lastLoginEnd != null && !"".equals(lastLoginEnd)){
    			lastLoginEnd = lastLoginEnd+" 00:00:00";
    			pd.put("lastLoginEnd", lastLoginEnd);
    		} 
    		
    		page.setPd(pd);
    		List<PageData>	userList = userService.listPdPageUser(page);			//列出用户列表
    		List<Role> roleList = roleService.listAllERRoles();						//列出所有二级角色
    		
    		mv.setViewName("system/user/user_list");
    		mv.addObject("userList", userList);
    		mv.addObject("roleList", roleList);
    		mv.addObject("pd", pd);
    		mv.addObject(Const.SESSION_QX,this.getHC());	//按钮权限
    		return mv;
    	}
    }
    
    2.user_list.jsp
      <select class="chzn-select" name="ROLE_ID" id="role_id" data-placeholder="请选择职位" style="vertical-align:top;width: 120px;">
    	  <option value=""></option>
    	  <option value="">全部</option>
    	  <c:forEach items="${roleList}" var="role">
    	  	<option value="${role.ROLE_ID }" <c:if test="${pd.ROLE_ID==role.ROLE_ID}">selected</c:if>>
    		  ${role.ROLE_NAME }
    		</option>
    	  </c:forEach>
      </select>