ztree多种数据包装以及相关设置

首先来一个完整的ztree代码

html代码

<form id="addTreeDataFrm" method="post" class="form-horizontal" style="width:300px;">

    <div class="form-group">
        <div class="col-sm-8">
            <select id="catTreeData" name="catTreeData" class="form-control" >
                <option value="" selected="selected">请选择</option>
            </select>
        </div>
    </div>

    <div class="form-group">
        <div class="col-sm-12">
            <div id="treeDiv">
                <ul id="tree" class="ztree"
                    style="width:200px;min-height:200px;height:100px;overflow:auto;scroll:y"></ul>
            </div>
        </div>
    </div>
</form>

js

第一步：发送ajax请求，获取json数据体

// 获取分类下拉数据，并初始化分类数据
function getCateData() {
    var catStr = $('#goodsType').val();
    var catArr = [];
    catArr = catStr.split(',');
    var catCode = catArr[1];
    if(catCode=="ebook"){
        catCode="BOOK";
    }
    var url = PlatForm.getContext() + '/spc/memberRight/getCategoryByCode.do';
    // var url ='data/bookCategory.json'
    $.ajax({
        url: url,
        type: 'post',
        async: false,
        data: {
            'catCode': catCode
        },
        dataType: "json",
        success: function (resultData) {
            if (resultData == null || resultData.length == 0) {
                mif.showErrorMessageBox("当前资源类型暂无分类!");
                return false;
            }
            //显示图书分类下拉框选项
            $("#catTreeData").empty();
            for (var i = 0; i < resultData.length; i++) {
                if ( resultData[i].code=="BOOK"){
                    $("#catTreeData").append('<option value= "'+ resultData[i].code + '"selected>' + resultData[i].catNametype + '</option>');
                }else {
                    $("#catTreeData").append('<option value=' + resultData[i].code + '>' + resultData[i].catNametype + '</option>');
                }
            }
            //数据转换
            getNodeList(resultData);
            //第一次初始化数据
            var zTreeNodes = $dataMap[resultData[0].code];
            //数据转换
            initTree(zTreeNodes);
        }
    });
}

2.对获取的数据体进行处理，提取数据体中的list数据数组datalist

//获取data数据体
function getNodeList(nodeList) {
    for (var i = 0; i < nodeList.length; i++) {
        var dataNode = nodeList[i];
        var datalist = dataNode.datalist; //BOOK 分类码
        var catCode = dataNode.code;  // book数据
        var catName = dataNode.catNametype;//图书分类名称
        $dataMap[catCode] = datalist;
        $nameMap[catCode] = catName;
    }
}

　3.初始化ztree initTree(zTreeNodes),内部需要对数据进行重新包装！！！，也就是getNode(zTreeNodes)

var zTreeObj;
//初始化树
function initTree(zTreeNodes) {
    // zTreeNodes = changeDataToZtree(zTreeNodes);
    zTreeNodes = getNode(zTreeNodes);
    var setting = {

        check: {
            enable: true,   //check选项
            chkboxType: {"Y": "ps", "N": "ps"}//父子关联
        },
        view: {
            selectedMulti: false
        }
    };
    zTreeObj = $.fn.zTree.init($("#tree"), setting, zTreeNodes);//绑定ztree对应的树
}

　4 数据转换，最重要的一步，此处要根据返回的list数据格式进行不同的包装。如果返回的格式是如下，也就是含有children字段的

 

//ztree数据类型转换
function getNode(node) {
    var catlogArr = new Array();
    for (var i = 0; i < node.length; i++) {
        var title = node[i].text + "[" + node[i].id + "]";
        if (!node[i].hasOwnProperty("children")) {
            // if (node[i].children.length == 0) {
            catlogArr.push({
                "name": node[i].text,
                "id": node[i].id,
                "pId": node[i].cattype,
                "title": title,
                "isParent": node[i].isRef,
                "nocheck": null,
                "cascadeId": node[i].cascadeId,
                "children": null
            });
            // }
        }
        else {
            catlogArr.push({
                "name": node[i].text,
                "id": node[i].id,
                "pId": node[i].cattype,
                // "pId": $catlogData[i].parentClassifyId,
                "title": title,
                "isParent": node[i].isRef,
                "nocheck": null,
                "cascadeId": node[i].cascadeId,
                "children": getNode(node[i].children)
            });
        }

    }
    return catlogArr;
}

　　如果返回的数据没有children字段，只是简单父子数据格式

//ztree数据类型转换,采用ztree简单数据格式
function getNode(node) {
    var catlogArr = new Array();
    for (var i = 0; i < node.length; i++) {
        //如果是父节点，展开节点
        if(node[i].parentId==0){
            catlogArr.push({
                "name": node[i].name,
                "id": node[i].id,
                "pId": node[i].parentId,
                "open":true,
                "isParent":true
            });
        }else {
            catlogArr.push({
                "name": node[i].name,
                "id": node[i].id,
                "pId": node[i].parentId
            });
        }
    }
    return catlogArr;
}

　　简单数据格式需要注意的是

 simpleData: enable:true,//此处必须为true
       

 var setting = {
        check: {
            enable: false,
            chkboxType: {"Y": "ps", "N": "ps"}
        },
        view: {
            dblClickExpand: false,
            showLine: true,
            selectedMulti: false
        },
        data: {
            simpleData: {
                enable:true,//此处必须为true
                idKey: "id",
                pIdKey: "pId",
                rootPId: ""
            }
        },
        callback: {
            beforeClick: function(treeId, treeNode) {
                var zTree = $.fn.zTree.getZTreeObj("#resTree");
                //如果是父节点，则展开
                if (treeNode.isParent) {
                    zTree.expandNode(treeNode);
                    return false;
                } else {
                    return true;
                }
            },
            onClick: zTreeOnClick
        }
    };