zTree树形插件使用异步加载方法，Struts2框架

<!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

zTree树形插件使用异步加载方法，Struts2框架

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~~~~~~~~~~

zTree树形插件使用 异步加载方法，Struts2框架

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zTree树形插件使用异步加载方法，Struts2框架