ztree通过ajax获取json并勾选checkbook

 var zTree;
 var setting = {
 view: {
 dblClickExpand: false, //双击节点时，是否自动展开父节点的标识
 showLine: true, //设置ztree是否显示节点之间的连线
 selectedMulti: false, //设置是否允许同时选中多个节点
 },
 check: {
 enable: true //设置ztree的节点是否显示checkbox/radio
 },
 data: {
 simpleData: {
 enable:true, //是否使用简单数据模式
 idKey: "id", //节点数据中保存唯一标识的属性名称
 pIdKey: "p_id", //节点数据中保存其父节点唯一标识的属性名称
 rootPId: "" //用于修正根节点父节点的数据，即pIdKey指定的属性值
 }
 },
 callback: {
 onClick:function (e,treeId,treeNode,clickFlag) { //用于捕捉勾选时触发
 zTree.checkNode(treeNode,!treeNode.checked,true);//勾选或取消勾选单个节点
 }
 }
 };

 var zNodes ;
 var select;
 var selectarry=[]; //要勾选的id
 var allnodes;
 var t = $("#tree");
 $.ajax({
 type: "POST",
 url: "...",//请求的后台地址
 data: "name=John&location=Bpston",//前台传给后台的参数
 dataType:"json",
 ansync:false,
 ContentType: "application/json; charset=utf-8",
 success: function(msg){ //msg:返回值
 // alert( msg.data );
 zNodes=msg.data.list;
 zNodes=eval(zNodes);
 //zNodes=JSON.stringify(zNodes);
 //console.log(zNodes);
 //alert(zNodes)
 t = $.fn.zTree.init(t, setting, zNodes);
 var zTree2 = $.fn.zTree.getZTreeObj("tree");
 selectarry=msg.data.nodes.split(",");
 allnodes=zTree2.getNodes();
 for(select=1;select<selectarry.length;select++)
 {
 allnodes[select]=msg.data.list[select];
 }
 console.log(allnodes);
 //console.log(selectarry);
 for(select=0;select<selectarry.length;select++)
 {
 zTree2.checkNode(zTree2.getNodesByParam("id",selectarry[select])[0],true);
 }

 }
 });

//展开和折叠
 $("#ztreeExpandAll").click(function () {
 $.fn.zTree.getZTreeObj("tree").expandAll(true);
 });
 $("#ztreeUnExpandAll").click(function () {
 $.fn.zTree.getZTreeObj("tree").expandAll(false);
 });

 //勾选全部或取消全部
 var clicknumber=1;

 $("#checkall_deafult").click(function () {
 if(clicknumber%2>0) {
 // var treeObj = $.fn.zTree.getZTreeObj("tree");
 zTree.checkAllNodes(true);
 }
 else {
 // var treeObj = $.fn.zTree.getZTreeObj("tree");
 zTree.checkAllNodes(false);
 }
 clicknumber++;
 });