OKHTTP+RxJava+Retrofit自用

依赖：

implementation 'io.reactivex.rxjava2:rxjava:2.0.1'///RxJava 依赖
implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'//RxAndroid 依赖
implementation 'com.squareup.retrofit2:adapter-rxjava2: '//Retrofit支持RxJava2 依赖implementation 'com.squareup.okhttp3:okhttp:4.9.0'//OkHttp 依赖
implementation 'com.squareup.okhttp3:logging-interceptor:4.9.0'//OkHttp日志拦截器依赖
implementation 'com.squareup.retrofit2:retrofit:2.9.0'//Retrofit依赖
implementation 'com.squareup.retrofit2:converter-gson:2.9.0'//Gson转换器 依赖

头参拦截器：

public class HttpInterceptor implements Interceptor {
    @NonNull
    @Override
    public Response intercept(@NonNull Chain chain) throws IOException {
        int userId = SPUtils.getInstance().getInt("userId", 0);
        String sessionId = SPUtils.getInstance().getString("sessionId", "0");
        Log.i("MyInfor", sessionId);
        Request.Builder builder = chain.request().newBuilder();
        builder.addHeader("userId", userId   "");
        builder.addHeader("sessionId", sessionId);
        Request request = builder.build();
        return chain.proceed(request);
    }
}

代码：

public class HttpUtil {
    public static HttpUtil httpUtil;
    public Api api;

    public Api getApi() {
        return api;
    }

    //TODO 双重校验锁
    public static HttpUtil getHttpUtil() {
        if (httpUtil == null) {
            synchronized (HttpUtil.class) {
                if (httpUtil == null) {
                    httpUtil = new HttpUtil();
                }
            }
        }
        return httpUtil;
    }

    //TODO 判断有网无网
    public static Boolean isConn(Context context) {
        ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        return info != null && info.isConnected();
    }

    public HttpUtil() {
        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .readTimeout(1000, TimeUnit.SECONDS)
                .connectTimeout(1000, TimeUnit.SECONDS)
                .addInterceptor(new HttpInterceptor())
                .addInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY))
                .build();
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://wq.bwstudent.com:7998")
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create())
                .client(okHttpClient)
                .build();
        api = retrofit.create(Api.class);
    }
}

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