微信公众号-自定义菜单

https://www.bilibili.com/video/BV1nb411P76t?p=12

微信开发文档：https://developers.weixin.qq.com/doc/offiaccount/Custom_Menus/Creating_Custom-Defined_Menu.html

以ViewButton为例，设置组团菜单，并有三个二级菜单（拼车、拼船、拼游）

public class Button {
    private List<BaseButton> button = new ArrayList<>();  // 这里的名字 在生成的Button对象时，将其转成json对象时  显示的名称就是这个
    public List<BaseButton> getButton() {
        return button;
    }
    public void setButton(List<BaseButton> button) {
        this.button = button;
    }
}

public class SubButton extends BaseButton {
    public List<BaseButton> sub_button = new ArrayList<BaseButton>();
    public List<BaseButton> getSub_button() {
        return sub_button;
    }
    public void setSub_button(List<BaseButton> sub_button) {
        this.sub_button = sub_button;
    }
    public SubButton() {
    }
    public SubButton(String name) {
        super(name);
    }
    public SubButton(List<BaseButton> sub_button) {
        this.sub_button = sub_button;
    }
    public SubButton(String name, List<BaseButton> sub_button) {
        super(name);
        this.sub_button = sub_button;
    }
}

public abstract class BaseButton {
    private String name;
    public BaseButton(String name) {
        this.name = name;
    }
}

public class ViewButton extends BaseButton {
    private String type = "view";
    private String url; // 点击菜单后要跳转的地址
    public ViewButton(String name, String url) {
        super(name);
        this.url = url;
    }
    //  省略了get() set()  
}

public void createMenu() {
    String pinChe = "拼车URL";
    String pinChuan = "拼船URL";
    String pinYou = "拼游URL";
    Button button = new Button();
    SubButton subButton = new SubButton("组团");
    subButton.getSub_button().add(new ViewButton("拼车", pinChe));
    subButton.getSub_button().add(new ViewButton("拼船", pinChuan));
    subButton.getSub_button().add(new ViewButton("拼游", pinYou));
    button.getButton().add(subButton);
    JSONObject jsonObject = JSONObject.fromObject(button);
    String url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=ACCESS_TOKEN";
    url = url.replace("ACCESS_TOKEN", WXService.getAccessToken()); // 自定义方法 获取accessToken
    String result = Util.post(url, jsonObject.toString()); // 自定义方法 发送post请求 并携带数据
    System.out.println(jsonObject.toString());  // 在创建失败的情况下 查看json字符串与开发文档里面创建菜单时的json字符串格式是否一致
    System.out.println(result);  // 查看输出结果 如果是{"errcode":0,"errmsg":"ok"}则创建成功
    /*
    一直报错 {"errcode":40017,"errmsg":"invalid button type hint: [I8nq_a0783sha1]"}
    原因是 在对应的Button类里面没有加getType()方法 导致对应的json字符串中没有type.
    */
}

就是单独执行一下上面creteMenu()方法即可创建菜单。

要实现进入菜单之前获取用户信息(openid，nickName...)：https://www.cnblogs.com/DDiamondd/p/13041742.html