使用Retrofit,后台返回的cookie值该怎么拿到呢?

返回的值控制台是这样打印的: OkHttp: Set-Cookie: JSESSIONID=54751703-2d8a-4f15-969e-34b5edc05017; Path=/; HttpOnly 
也就是JSESSIONID=后面的就是cookie.
后台想要我登陆成功后保存这个返回的cookie,然后每次登陆都传这个cookie过去.现在的问题是:登陆成功后怎么拿到这个cookie值,然后每次传的时候怎么带过去?
下面是Retrofit的封装类:
public class RxManager {    private static RxManager INSTANCE;
    private RequestMethod mRequestService;
    private Gson mGson = new Gson();
    //使用cookie保存用户状态
    private MediaType JSON = MediaType.parse("application/json; charset=utf-8");
    private static WeakReference<Activity> mActivity;
    private static final String TAG = "RxManager";    private RxManager() {
        OkHttpClient okHttpClient = createOkHttpClient();
        Retrofit retrofit = new Retrofit.Builder().baseUrl(RequestUrl.BASE_URL)
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create(mGson))
//                .addConverterFactory(ResponseConverterFactory.create(mGson))     //处理Rxjava、Retrofit返回json数据解析异常
                .client(okHttpClient)
                .build();
        mRequestService = retrofit.create(RequestMethod.class);
    }    public static RxManager getInstance() {
        if (INSTANCE == null) {
            INSTANCE = new RxManager();
        }
        return INSTANCE;
    }    private OkHttpClient createOkHttpClient() {
//        cookieJar.clear();
//        Log.d(TAG, "createOkHttpClient: 1709= "+cookieJar.toString());        HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
        loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY); //这行必须加 不然默认不打印
        //cache url
        File httpCacheDirectory = new File(BaseApplication.getContext().getCacheDir(), "responses");
        int cacheSize = 10 * 1024 * 1024; // 10 MiB
        Cache cache = new Cache(httpCacheDirectory, cacheSize);        SharedPrefsCookiePersistor sharedPrefsCookiePersistor = new SharedPrefsCookiePersistor(BaseApplication.getContext());
        List<Cookie> cookies = sharedPrefsCookiePersistor.loadAll();
        for (int i = 0; i < cookies.size(); i++) {
            Cookie cookie = cookies.get(i);
            Log.d(TAG, "createOkHttpClient: 1810="+cookie.name()+"  "+cookie.value());
        }
        ClearableCookieJar cookieJar = new PersistentCookieJar(new SetCookieCache(), sharedPrefsCookiePersistor);        return new OkHttpClient
                .Builder()
                .cookieJar(cookieJar)    //使用cookie保存用户状态
                .cache(new Cache(BaseApplication.getContext().getCacheDir(), 1024 * 1024 * 100))
                .connectTimeout(30, TimeUnit.SECONDS)
                .readTimeout(30, TimeUnit.SECONDS)
                .writeTimeout(30, TimeUnit.SECONDS)
                .addInterceptor(loggingInterceptor)     //添加控制台网络请求消息拦截器,直接在控制台输出
                .cache(cache)
                .addInterceptor(REWRITE_CACHE_CONTROL_INTERCEPTOR)
//                .addInterceptor(new CacheInterceptor(BaseApplication.getContext().getCacheDir().getAbsolutePath()))
                .addInterceptor(chain -> {
                    Request request = chain.request();
                    Response response = chain.proceed(request);
                    int code = response.code();
                    Log.d(TAG, " 0922: OkHttpClient 内code=OkHttpClient " + code);                    if (code == 200) {
                        if (null != response.header("Set-Cookie")) {
                            String cookie = response.header("Set-Cookie").split(";")[0];
                            Log.d(TAG, "createOkHttpClient: 1917=  "+cookie);// 这里的cookie打印的是 rememberMe=deleteMe,应该不对
                        }
                    }
                    return response;
                }).build();
    }    //cache
    Interceptor REWRITE_CACHE_CONTROL_INTERCEPTOR = chain -> {
        CacheControl.Builder cacheBuilder = new CacheControl.Builder();
        cacheBuilder.maxAge(0, TimeUnit.SECONDS);
        cacheBuilder.maxStale(365, TimeUnit.DAYS);
        CacheControl cacheControl = cacheBuilder.build();
        Request request = chain.request();
        if (!NetWorkStatusUtil.checkNetWorkAvaliable(BaseApplication.getContext())) {
            request = request.newBuilder()
                    .cacheControl(cacheControl)
                    .build();
        }
        Response originalResponse = chain.proceed(request);
        int code = originalResponse.code();        Log.d(TAG, " 0922: 拦截器内code= " + code);
        //todo: 302直接到未登录主页
        if (code == 302) {
            UserManager.getInstance().logout();//清除所有数据
            PreferenceUtil.clearSingle(mActivity.get(), "assessment");
            ToastUtils.showShort(R.string.please_relogin);
            Intent loginIntent = new Intent(mActivity.get(), UnloginMainActivity.class);
            loginIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            mActivity.get().startActivity(loginIntent);
        }        if (NetWorkStatusUtil.checkNetWorkAvaliable(BaseApplication.getContext())) {
            int maxAge = 0; // read from cache
            return originalResponse.newBuilder()
                    .removeHeader("Pragma")
                    .header("Cache-Control", "public ,max-age=" + maxAge)
                    .build();
        } else {
            int maxStale = 60 * 60 * 24 * 28; // tolerate 4-weeks stale
            return originalResponse.newBuilder()
                    .removeHeader("Pragma")
                    .header("Cache-Control", "public, only-if-cached, max-stale=" + maxStale)
                    .build();
        }
    };    private RequestMethod getRequestMethod() {
        return mRequestService;
    }    public static RequestMethod getMethod() {
        return getInstance().getRequestMethod();
    }    public static RequestMethod getMethod(Activity activity) {
        mActivity = new WeakReference<>(activity);
        return getInstance().getRequestMethod();
    }
}