用android和ideal开发环境按照以下需求规格说明，完成“应用市场APP”的基本需求： 1. 设计API接口： （1）设计表app，含字段id，name，downloadUrl，img，introduce, downloadCount,size （2）添加数据：今日校园，交广12123，国家反诈中心，抖音，学习通，哔哩哔哩 （3）按照Controller，Service，Mapper的三层结构设计接口 （4）按照{“code”:0,“msg”：“错误原因”,“data”：Object}的格式封装接口内容 分别给出Controller，Service，Mapper的代码

以下是基于Android和IDEA开发环境的Controller、Service、Mapper的代码：

Controller代码：

public class AppController {
    private AppService appService;

    public AppController() {
        appService = new AppService();
    }

    public void getAppList(final Callback<List<App>> callback) {
        appService.getAppList(new Callback<List<App>>() {
            @Override
            public void onSuccess(List<App> data) {
                callback.onSuccess(data);
            }

            @Override
            public void onFailure(String msg) {
                callback.onFailure(msg);
            }
        });
    }

    public void addApp(App app, final Callback<Void> callback) {
        appService.addApp(app, new Callback<Void>() {
            @Override
            public void onSuccess(Void data) {
                callback.onSuccess(data);
            }

            @Override
            public void onFailure(String msg) {
                callback.onFailure(msg);
            }
        });
    }
}

Service代码：

public class AppService {
    private AppMapper appMapper;

    public AppService() {
        appMapper = new AppMapper();
    }

    public void getAppList(final Callback<List<App>> callback) {
        appMapper.getAppList(new Callback<List<App>>() {
            @Override
            public void onSuccess(List<App> data) {
                callback.onSuccess(data);
            }

            @Override
            public void onFailure(String msg) {
                callback.onFailure(msg);
            }
        });
    }

    public void addApp(App app, final Callback<Void> callback) {
        appMapper.addApp(app, new Callback<Void>() {
            @Override
            public void onSuccess(Void data) {
                callback.onSuccess(data);
            }

            @Override
            public void onFailure(String msg) {
                callback.onFailure(msg);
            }
        });
    }
}

Mapper代码：

public class AppMapper {
    public void getAppList(final Callback<List<App>> callback) {
        // 这里模拟从网络获取数据
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(1000); // 模拟网络请求耗时
                    List<App> list = new ArrayList<>();
                    list.add(new App(1, "今日校园", "https://www.xxx.com/jrxq.apk", "https://www.xxx.com/jrxq.jpg", "介绍1", 100, "10MB"));
                    list.add(new App(2, "交广12123", "https://www.xxx.com/jg12123.apk", "https://www.xxx.com/jg12123.jpg", "介绍2", 200, "20MB"));
                    list.add(new App(3, "国家反诈中心", "https://www.xxx.com/gjfzzx.apk", "https://www.xxx.com/gjfzzx.jpg", "介绍3", 300, "30MB"));
                    list.add(new App(4, "抖音", "https://www.xxx.com/dy.apk", "https://www.xxx.com/dy.jpg", "介绍4", 400, "40MB"));
                    list.add(new App(5, "学习通", "https://www.xxx.com/xxt.apk", "https://www.xxx.com/xxt.jpg", "介绍5", 500, "50MB"));
                    list.add(new App(6, "哔哩哔哩", "https://www.xxx.com/bilibili.apk", "https://www.xxx.com/bilibili.jpg", "介绍6", 600, "60MB"));
                    callback.onSuccess(list);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                    callback.onFailure("网络请求失败");
                }
            }
        }).start();
    }

    public void addApp(App app, final Callback<Void> callback) {
        // 这里模拟向网络添加数据
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    Thread.sleep(1000); // 模拟网络请求耗时
                    callback.onSuccess(null);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                    callback.onFailure("网络请求失败");
                }
            }
        }).start();
    }
}

注意：以上代码仅供参考，具体实现可能会根据实际情况而有所不同。需要注意的是，在Android开发中，网络请求需要在子线程中进行，且不能在主线程中更新UI，因此需要使用回调函数来处理异步请求的返回结果。