zTree树形插件使用异步加载方法，Struts2框架

来源：互联网发布：电信网络宽带编辑：程序博客网时间：2024/06/05 12:00

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>异步加载</title><link rel="stylesheet"    href="${pageContext.request.contextPath}/zTree_v3-master/css/demo.css"><link rel="stylesheet"    href="${pageContext.request.contextPath}/zTree_v3-master/css/zTreeStyle/zTreeStyle.css"><script type="text/javascript"    src="${pageContext.request.contextPath}/jquery-2.1.1.min.js"></script><script type="text/javascript"    src="${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 class="ztree"        style="width: 20%; height: 500px; padding-top: 10px; float: left; border: 1px solid #FF0000;">        <ul id="treeDemo"></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，基本都可以复制使用
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

希望可以帮到大家，这就是我再学习ztree插件时的测试代码，ssh框架注解版，在其他框架里还没有试过，但是了解了使用方法，应该都没问题，我相信你们都比我强的多。不是大神，只是分享一下。大神勿喷~~~~~~~~~~

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zTree树形插件使用 异步加载方法，Struts2框架

zTree树形插件使用异步加载方法，Struts2框架