安卓通过服务器访问数据库

implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'

public class User {
    private int id;
    private String name;
    private String email;

    // Getters and setters
}

import retrofit2.Call;
import retrofit2.http.GET;

public interface UserService {
    @GET("users")
    Call<List<User>> getUsers();
}

import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class MainActivity extends AppCompatActivity {
    private static final String BASE_URL = "https://your-server-url.com/api/";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl(BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        UserService userService = retrofit.create(UserService.class);
        Call<List<User>> call = userService.getUsers();

        call.enqueue(new Callback<List<User>>() {
            @Override
            public void onResponse(Call<List<User>> call, Response<List<User>> response) {
                if (response.isSuccessful()) {
                    List<User> users = response.body();
                    // 处理用户数据
                } else {
                    // 处理错误
                }
            }

            @Override
            public void onFailure(Call<List<User>> call, Throwable t) {
                // 处理失败
            }
        });
    }
}