图一：我按照你们所写的类容，却打印不出请求的内容

2021-07-27 00:14:21.172 5437-5437/? I/.example.okhtt: Late-enabling -Xcheck:jni

2021-07-27 00:14:21.352 5437-5437/com.example.okhttp I/Perf: Connecting to perf service.

2021-07-27 00:14:21.408 5437-5470/com.example.okhttp I/.example.okhtt: The ClassLoaderContext is a special shared library.

2021-07-27 00:14:21.408 5437-5437/com.example.okhttp W/Binder:intercep: type=1400 audit(0.0:423073): avc: denied { getattr } for path="/data/data/com.miui.contentcatcher" dev="mmcblk0p87" ino=5240 scontext=u:r:untrusted_app:s0:c212,c256,c512,c768 tcontext=u:object_r:system_app_data_file:s0 tclass=dir permissive=0

2021-07-27 00:14:21.416 5437-5470/com.example.okhttp D/ViewContentFactory: initViewContentFetcherClass

2021-07-27 00:14:21.416 5437-5470/com.example.okhttp D/ViewContentFactory: getInterceptorPackageInfo

2021-07-27 00:14:21.416 5437-5470/com.example.okhttp W/.example.okhtt: Accessing hidden method Landroid/app/AppGlobals;->getInitialApplication()Landroid/app/Application; (light greylist, linking)

2021-07-27 00:14:21.417 5437-5470/com.example.okhttp D/ViewContentFactory: getInitialApplication took 1ms

2021-07-27 00:14:21.417 5437-5470/com.example.okhttp D/ViewContentFactory: packageInfo.packageName: com.miui.catcherpatch

2021-07-27 00:14:21.418 5437-5437/com.example.okhttp W/Binder:intercep: type=1400 audit(0.0:423074): avc: denied { getattr } for path="/data/data/com.miui.catcherpatch" dev="mmcblk0p87" ino=5646 scontext=u:r:untrusted_app:s0:c212,c256,c512,c768 tcontext=u:object_r:system_app_data_file:s0 tclass=dir permissive=0

2021-07-27 00:14:21.427 5437-5470/com.example.okhttp D/ViewContentFactory: initViewContentFetcherClass took 10ms

2021-07-27 00:14:21.427 5437-5470/com.example.okhttp I/ContentCatcher: ViewContentFetcher : ViewContentFetcher

2021-07-27 00:14:21.427 5437-5470/com.example.okhttp D/ViewContentFactory: createInterceptor took 11ms

2021-07-27 00:14:21.436 5437-5437/com.example.okhttp W/.example.okhtt: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (light greylist, reflection)

2021-07-27 00:14:21.438 5437-5437/com.example.okhttp W/.example.okhtt: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (light greylist, reflection)

2021-07-27 00:14:21.533 5437-5437/com.example.okhttp W/TabLayout: MODE_SCROLLABLE + GRAVITY_FILL is not supported, GRAVITY_START will be used instead

2021-07-27 00:14:21.610 5437-5471/com.example.okhttp I/Adreno: QUALCOMM build          : 6c0fbe4, I4f6179b11f

  Build Date            : 03/05/20

  OpenGL ES Shader Compiler Version: EV031.26.03.02

  Local Branch           : 

  Remote Branch          : refs/tags/AU_LINUX_ANDROID_LA.UM.7.11.R1.09.00.00.542.027

  Remote Branch          : NONE

  Reconstruct Branch        : NOTHING

2021-07-27 00:14:21.610 5437-5471/com.example.okhttp I/Adreno: Build Config           : S P 6.0.9 AArch64

2021-07-27 00:14:21.608 5437-5437/com.example.okhttp W/RenderThread: type=1400 audit(0.0:423075): avc: denied { search } for name="proc" dev="debugfs" ino=11238 scontext=u:r:untrusted_app:s0:c212,c256,c512,c768 tcontext=u:object_r:kgsl_debugfs:s0 tclass=dir permissive=0

2021-07-27 00:14:21.613 5437-5471/com.example.okhttp I/Adreno: PFP: 0x016ee183, ME: 0x00000000

2021-07-27 00:14:21.621 5437-5471/com.example.okhttp I/ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasWideColorDisplay retrieved: 0

2021-07-27 00:14:21.623 5437-5471/com.example.okhttp I/ConfigStore: android::hardware::configstore::V1_0::ISurfaceFlingerConfigs::hasHDRDisplay retrieved: 0

2021-07-27 00:14:21.624 5437-5471/com.example.okhttp I/OpenGLRenderer: Initialized EGL, version 1.4

2021-07-27 00:14:21.624 5437-5471/com.example.okhttp D/OpenGLRenderer: Swap behavior 2

2021-07-27 00:14:21.676 5437-5437/com.example.okhttp E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length

2021-07-27 00:14:21.676 5437-5437/com.example.okhttp E/SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot have a zero length

2021-07-27 00:14:29.361 5437-5466/com.example.okhttp I/.example.okhtt: ProcessProfilingInfo new_methods=664 is saved saved_to_disk=1 resolve_classes_delay=8000

Java代码

import com.example.okhttp.model.Api;
import com.example.okhttp.model.domain.Categories;
import com.example.okhttp.presenter.IHomePresenter;
import com.example.okhttp.utils.LogUtils;
import com.example.okhttp.utils.RetrofitManager;
import com.example.okhttp.view.IHomeCallback;

import java.net.HttpURLConnection;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;

public class HomePresenterImpl implements IHomePresenter {
    @Override
    public void getCategories() {

        Retrofit retrofit = RetrofitManager.getInstance().getRetrofit();;
        Api api = retrofit.create(Api.class);
        Call<Categories> task = api.getCategories();
        task.enqueue(new Callback<Categories>() {
            @Override
            public void onResponse(Call<Categories> call, Response<Categories> response) {

                int code = response.code();
                LogUtils.d(HomePresenterImpl.this,"result code is -->"+code);
                if (code == HttpURLConnection.HTTP_OK){
                    Categories categories = response.body();
                    assert categories != null;
                    LogUtils.d(HomePresenterImpl.this,categories.toString());
                }else {
                    LogUtils.i(HomePresenterImpl.this,"请求失败...");
                }
            }

            @Override
            public void onFailure(Call<Categories> call, Throwable t) {

                LogUtils.e(this,"请求错误..."+t);
            }
        });
    }

    @Override
    public void registerCallback(IHomeCallback callback) {

    }

    @Override
    public void unregisterCallback(IHomeCallback callback) {

    }
}

图二：当我导入这个依赖类时，就爆出这找不到此类的错误，所以只能屏蔽此