var setting = {
check: {
enable: true,
},
data: {
simpleData: {
enable: true
}
}
};
var nodes =[{"id":"369000000000008030","name":"1"},
{"id":"369000000000008031","pId":"369000000000008030","name":"1-1"},
{"id":"369000000000008032","pId":"369000000000008031","name":"1-1-1"},
{"id":"369000000000008033","pId":"369000000000008032","name":"1-1-1-1","checked":true},
{"id":"369000000000008034","pId":"369000000000008032","name":"1-1-1-2","checked":true}];
$(document).ready(function () {
$.fn.zTree.init($("#tree_data"), setting, nodes);
})

我也遇到这个问题了，楼主解决了吗？