jsp页面zTree的简单应用

<%@ page contentType="text/html;charset=UTF-8"%><%        if (request.getProtocol().compareTo("HTTP/1.0") == 0)                response.setHeader("Pragma", "no-cache");        if (request.getProtocol().compareTo("HTTP/1.1") == 0)                response.setHeader("Cache-Control", "no-cache");        response.setDateHeader("Expires", 0);%>             

    public List getTreelist(){    //设定树菜单的根    String ztree = "{ id:00, pId:0, name:'要显示的根名,也可以从数据库取出', click:"parent.setIframesrc()" , open:true },";    List ztreeList = new ArrayList(); //从数据库获取所有菜单的信息    List menuList = this.getMenuList();    if(Collections.isNotEmpty(menuList)){     ztreeList.add(ztree);     for (int i = 0; i < menuList.size(); i++) {        Menu menu = (Menu) menuList.get(i); //按照一定的格式拼接字符串，最后返回到jsp页面        ztree = "{ id:"+menu.getMenuid()+", pId:"+menu.getParentid()+", name:""+menu.getMenuname()+""," +            "click:"parent.setIframesrc('"+menu.getMenuid()+"')"},";        if (i+1 == menuList.size()) {         ztree = ztree.substring(0, ztree.lastIndexOf(","));        }        ztreeList.add(ztree);     }    }     return ztreeList; }