zTree树形插件异步加载方法详解
发布时间:-09-13 19:35:03
来源:脚本之家
阅读:99
作者:倾我一生一世念
本文实例为大家分享了zTree树形插件异步加载,Struts2框架,供大家参考,具体内容如下
异步加载
href="${pageContext.request.contextPath}/zTree_v3-master/css/demo.css">
href="${pageContext.request.contextPath}/zTree_v3-master/css/zTreeStyle/zTreeStyle.css">
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);
});
>
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 list=null;
try {
list=ztreeService.getMenusById(ztree);
} catch (Exception e) {
e.printStackTrace();
}
super.writeJson(list);
}
public List 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 params = new HashMap();
//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 getMenusById(Ztree ztree) throws Exception {
String hql=" from Ztree where 1=1 ";
Map params=new HashMap();
if(ztree.getId()==null||ztree.getId().equals("")){
hql+=" and pid is null ";
}else{
hql+= " and pid = :id ";
params.put("id",ztree.getId());
}
List queryZtree = ztreeDao.queryList(hql, params);
List list=new ArrayList();
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 params=new HashMap();
params.put("id", ztree.getId());
List 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
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持亿速云。