【笔记】ztree的使用

引用的js和css：

<!-- zTreeJS -->
<script type="text/javascript" src="jquery/jquery-1.7.min.js"></script>
<script type="text/javascript" src="zTree/js/jquery.ztree.core-3.2.js"></script>
<script type="text/javascript" src="zTree/js/jquery.ztree.excheck-3.2.js"></script>
<script type="text/javascript" src="zTree/js/jquery.ztree.exedit-3.2.js"></script>

//异步加载节点
var setting = {
    data: {
        key : {
            name : "name"
        },
        simpleData: {
            enable: true,
            idKey: "id",
            pIdKey: "pId",
            rootPId: 0
        }
    },
    async: {
        //异步加载
        enable: true,
        url:  "${ctx}/admin/learn/course!publicCourseTree.do",
        autoParam : [ "id" ],
        dataType : "json",
        type : "post"
    },
    check : {
        enable : false,
        chkStyle : "radio",
        radioType : "level"
    },
    callback: {
        beforeExpand: beforeExpand,
        onAsyncSuccess: onAsyncSuccess,
        onAsyncError: onAsyncError,
        onClick : function(event, treeId, treeNode) {
            var    courseID = treeNode.id;
            $("#courseID").val(courseID);
            $.post("${ctx}/admin/learn/course!getCourseTreeInfo.do?id="+courseID,
                {"parm":""},
                function(data) {
                    $.each(data, function(i,item) {
                        $("#codeSM").html(item.id);
                        $("#name").html(item.name);
                        $("#flag").val(item.status);
                           $("#description").html(item.description);
                           $("#createtime").html(item.createtime);
                           if(item.status=="1"){
                               $("#updateflag").val("取消发布");
                               $("#status").html("已发布");
                           }else{
                               $("#updateflag").val("发布");
                               $("#status").html("未发布");
                           }
                           if(item.imgurl!=null){
                               $("#img").attr("src","${ctx}/uploads/"+item.imgurl);
                           }else{
                               $("#img").attr("src","");
                           }
                       });
                 }, "json");
           }
    }
};

function beforeExpand(treeId, treeNode) {
if (!treeNode.isAjaxing) {
return true;
} else {
alert("zTree 正在下载数据中，请稍后展开节点。。。");
return false;
}
}
function onAsyncSuccess(event, treeId, treeNode, msg) {

}
function onAsyncError() {
alert(" 数据加载失败");
}

function createTree() {
$.ajax({
url: "${ctx}/admin/learn/course!publicCourseTree.do", //url action是方法的名称
data: { id: -1 },
type: ‘Get‘,
dataType: "json", //可以是text，如果用text，返回的结果为字符串；如果需要json格式的，可是设置为json
success: function (data) {
$.fn.zTree.init($("#_courseTreeSM"), setting, eval(data));
},
error: function (msg) {
alert(" 数据加载失败！" + msg);
}
});
}

$(document).ready(function () {
createTree();
});

//删除
var tree = $.fn.zTree.getZTreeObj("_stationTreeSM");
                            var node = tree.getNodeByParam("ID", response.id, null);
                            tree.removeNode(node);

var node = treeObj.getNodeByParam("ID", response.parentid, null);
//添加
treeObj.addNodes(node, {ID : response.newStationID, NAME : $("#nameAS").val()});
//修改
node.NAME = $(‘#nameAS‘).val();
treeObj.updateNode(node);

public List<Map<String, Object>> getPublicCourseTree(String id, Integer orgID)
    {
        List<Map<String, Object>> list1 = new ArrayList<Map<String, Object>>();
        List<Map<String, Object>> list2 = new ArrayList<Map<String, Object>>();
        if (null == id && !"".equals(id)){
            String hql="SELECT t.id, t.name, t.parentid as pid,t.description,DATE_FORMAT(t.createtime, ‘%Y-%m-%d‘) createtime,t.status,t.imgurl,(SELECT COUNT(t2.id) FROM c_publiccourse_tab t2 WHERE t2.parentid = t.id) coun FROM c_publiccourse_tab t WHERE  t.PARENTID = -1 and t.orgid=‘"+orgID+"‘";
            Query query = super.createSQLQuery(hql).addScalar( "id" , Hibernate.STRING).addScalar( "name" , Hibernate.STRING).addScalar( "pid" , Hibernate.STRING)
                    .addScalar( "description" , Hibernate.STRING).addScalar( "createtime" , Hibernate.STRING).addScalar( "status" , Hibernate.STRING).addScalar( "imgurl" , Hibernate.STRING).addScalar( "coun" , Hibernate.STRING).setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
            list1=query.list();
        }else{
            String hql = "SELECT t.id, t.name , t.parentid as pid,t.description,DATE_FORMAT(t.createtime, ‘%Y-%m-%d‘) createtime,t.status,t.imgurl,(SELECT COUNT(t2.id) FROM c_publiccourse_tab t2 WHERE t2.parentid = t.id) coun FROM c_publiccourse_tab t WHERE  t.PARENTID =‘" + id +"‘  and t.orgid=‘"+orgID+"‘ order by t.id asc";
            Query query = super.createSQLQuery(hql).addScalar( "id" , Hibernate.STRING).addScalar( "name" , Hibernate.STRING).addScalar( "pid" , Hibernate.STRING)
                    .addScalar( "description" , Hibernate.STRING).addScalar( "createtime" , Hibernate.STRING).addScalar( "status" , Hibernate.STRING).addScalar( "imgurl" , Hibernate.STRING).addScalar( "coun" , Hibernate.STRING).setResultTransformer(Transformers.ALIAS_TO_ENTITY_MAP);
            list1=query.list();
        }
        for (Map<String, Object> map : list1){
            map.put("open", true);
            String parentid = map.get("pid").toString();
            if (parentid.equals("-1")){
                map.put("open", true);
                int count = Integer.parseInt(map.get("coun").toString());
                if (count > 0){
                    map.put("isParent", true);
                }else{
                    map.put("isParent", false);
                }
            }else{
                int count = Integer.parseInt(map.get("coun").toString());
                if (count > 0){
                    map.put("isParent", true);
                }
            }
            list2.add(map);
        }
        return list2;
    }

    List<Map<String, Object>> data=publicCourseManager.getPublicCourseTree2(id,orgID);
        try
        {
            response.getWriter().write(JSONArray.fromObject(data).toString());
        } catch (IOException e)
        {
            e.printStackTrace();
        }