public class WechatDIYMenuTest {
  public static void main(String[] args) {
    String accessToken = "15_A0pP-hwxjv3DCQbQmk9Gl99aIvjieSO6FStnoNyt78_S_Souv9RmMWRu9ndzlFJT4iD1e3iLXNGvxP2AB4aZ0k1" +
        "pK76Sp9DYMVLJZThKcsRCIJtFOw3qfGuM5d0GTDdAAAMZJ";
    JSONObject jsonObject = new JSONObject();
    JSONArray jsonArray = new JSONArray();
    //一級菜單
    JSONObject menu1 = new JSONObject();
    menu1.put("type", "click");
    menu1.put("name", "菜單1");
    menu1.put("key", "key_1");
    jsonArray.add(menu1);
    //一級菜單
    JSONObject menu2 = new JSONObject();
    menu2.put("name", "菜單2");
    JSONArray jsonArray2 = new JSONArray();
    //二級菜單
    JSONObject menu3 = new JSONObject();
    menu3.put("type", "click");
    menu3.put("name", "菜單3");
    menu3.put("key", "key_3");
    jsonArray2.add(menu3);
    menu2.put("sub_button", jsonArray2);
    jsonArray.add(menu2);
    //一級菜單
    JSONObject menu4 = new JSONObject();
    menu4.put("type", "click");
    menu4.put("name", "菜單4");
    menu4.put("key", "key_4");
    jsonArray.add(menu4);
    jsonObject.put("button", jsonArray);
    String url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" + accessToken;
    String result = HttpClientUtil.doPostJson(url, jsonObject.toJSONString());
    System.out.println(result);
  }
}