树节点间距太窄了 很紧凑 须要css调整一下
/*树形图间距*/.ztree li span{ font-size: 14px;}.ztree li a { vertical-align: sub;}.ztree li span.button.center_docu { background-position: -56px -10px; height: 30px;}.ztree li span.button.bottom_docu { background-position: -56px -30px; height: 30px;}