<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>异步加载</title> <link href="https://www.jb51.net/${pageContext.request.contextPath}/zTree_v3-master/css/demo.css"> <link href="https://www.jb51.net/${pageContext.request.contextPath}/zTree_v3-master/css/zTreeStyle/zTreeStyle.css"> <script type="text/javascript" src="https://www.jb51.net/${pageContext.request.contextPath}/jquery-2.1.1.min.js"></script> <script type="text/javascript" src="https://www.jb51.net/${pageContext.request.contextPath}/zTree_v3-master/js/jquery.ztree.core.min.js"></script> <script type="text/javascript"> var setting = { async : { enable : true, url : "${pageContext.request.contextPath}/ztreeAction!getMenusById.jhtml", autoParam : [ "id" ], //dataFilter : filter }, data : { key : { url : "xUrl" }, simpleData : { enable : true, pIdKey : "pid" } }, }; $(document).ready(function() { $.fn.zTree.init($("#treeDemo"), setting); }); </script> </head> <body> <div> <ul></ul> </div> </body> </html>
上面呢，是jsp页面的代码，因为是纯插件测试，可以直接复制过去使用的，
action层代码，可以直接复制使用
public void getMenusById(){ List<Ztree> list=null; try { list=ztreeService.getMenusById(ztree); } catch (Exception e) { e.printStackTrace(); } super.writeJson(list); }
public List<Ztree> getMenusById(Ztree ztree) throws Exception; //接口
//service代码，几本都可以复制使用 package com.jk.service.impl; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Repository; import com.jk.dao.ZtreeDao; import com.jk.model.Ztree; import com.jk.service.ZtreeService; @Repository("ztreeService") public class ZtreeServiceImpl implements ZtreeService { @Autowired private ZtreeDao ztreeDao; @Override public List queryList(Ztree ztree) throws Exception { String hql=" from Ztree where 1=1 "; Map<String, Object> params = new HashMap<String, Object>(); //传的对象是否为空，拼接sql+id if(ztree.getId()!=null){ hql+=" and id = :id "; params.put("id",ztree.getId()); } return ztreeDao.queryList(hql, params); } //递归查询 @Override public List<Ztree> getMenusById(Ztree ztree) throws Exception { String hql=" from Ztree where 1=1 "; Map<String,Object> params=new HashMap<String,Object>(); if(ztree.getId()==null||ztree.getId().equals("")){ hql+=" and pid is null "; }else{ hql+= " and pid = :id "; params.put("id",ztree.getId()); } List<Ztree> queryZtree = ztreeDao.queryList(hql, params); List<Ztree> list=new ArrayList<Ztree>(); for(Ztree ztree2:queryZtree){ if(queryBoolean(ztree2)){ ztree2.setIsParent("true"); } list.add(ztree2); } return list; } //熟悉递归的朋友应该可以看懂，我就不解释了，我也聊不清楚这个递归，不误导了，代码在这，可以复制进去直接运行， public boolean queryBoolean(Ztree ztree) throws Exception{ boolean flag=false; String hql= " from Ztree where pid = :id "; Map<String,Object> params=new HashMap<String,Object>(); params.put("id", ztree.getId()); List<Ztree> queryZtree = ztreeDao.queryList(hql, params); if(queryZtree!=null&&queryZtree.size()>0){ flag=true; } return flag; } }
dao层就不用写了吧，只是一个查询，下面我把ztree的表字段附上
