最终效果:
点击非叶子节点时，向后台发送请求，获取下级菜单
前台代码如下：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<script type="text/javascript" src="<%=basePath %>/js/jquery-1.8.1.js"></script>
<script type="text/javascript" src="<%=basePath %>/js/jquery.ztree.all-3.5.min.js"></script>
<link href="<%=basePath %>/css/zTreeStyle.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript">
var zTree;
var setting = {
async: {
enable: true,
url:"<%=basePath%>menu/getMenu.action",
autoParam:["id=pid"]
},
callback:{
beforeClick:function(treeId,treeNode){
if(treeNode.isParent){
zTree.expandNode(treeNode);
return true;
}
return false;
}
}
};
$(function(){
zTree = $.fn.zTree.init($("#tree"), setting);
});
</script>
<body>
<ul id="tree" class="ztree"></ul>
</body>
</html>
后台代码（springMVC+mybatis）如下：
controller层：
@Controller
@RequestMapping("menu")
public class MenuController {
@Autowired
private MenuService menuService;
@RequestMapping("/getMenu")
@ResponseBody
public List<Menu> getMenu(@RequestParam(defaultValue="0")int pid) throws Exception{
return this.menuService.getMenu(pid);
}
}
service层如下：
@Service
public class MenuService {
@Autowired
private MenuDao menuDao;
public List<Menu> getMenu(int pid) throws Exception{
if(pid == 0){
List<Menu> list = new ArrayList<Menu>();
Menu menu = this.menuDao.getRoot();
list.add(menu);
return list;
}
return this.menuDao.getNextNodes(pid);
}
}
数据库结构如下：
