我只是在学英语。我想在我的应用程序中获得一个存储在mobx状态的值。但不知道如何在功能组件中获取mobx状态。

const user_id = observer(({ GlobalStore }) =>
    console.log(GlobalStore.user_id)
); // I just need the user ID.

这是完整的代码：

import { observer } from "mobx-react";
import Store from "../mobx/Store";

export const user_id = observer(({ GlobalStore }) =>
    console.log(GlobalStore)
);

console.log(user_id);

我的store.js文件如下：

import { observable, action, makeObservable, autorun } from "mobx";
class GlobalStore {
    site_title = "ABCD";
    app_code = null;
    user_id = null;

    constructor() {
        makeObservable(this, {
            site_title: observable,
            app_code: observable,
            user_id: observable,
            update_title: action.bound,
            update_appcode: action.bound,
            update_userid: action.bound,
        });
    }

    update_title(title) {
        this.site_title = title;
    }
    update_appcode(code) {
        this.app_code = code;
    }
    update_userid(id) {
        this.user_id = id;
    }
}

const Store = new GlobalStore();
autorun(() => {
    console.log("System Checking... OK")
})
export default Store;