如何在 Retrofit 中修复 SSL 握手超时

Question

在我的应用程序中，我想从服务器获取数据并将其显示到RecyclerView。
为了从服务器获取数据，我使用 Retrofit2 并编写以下代码。
但是一段时间后运行应用程序时，请从 Retrofit2 向我显示 onFailure 中的 E/priceResLog: Err : SSL handshake timed out！

我的代码：

public class ApiUtilsPrice {

    private static final String BASE_URL = "https://core.arzws.com/";
    private static Retrofit retrofit = null;

    public static Retrofit getClient() {

        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .readTimeout(60, TimeUnit.SECONDS)
                .writeTimeout(60, TimeUnit.SECONDS)
                .connectTimeout(60, TimeUnit.SECONDS)
                .build();

        if (retrofit == null) {
            retrofit = new Retrofit.Builder()
                    .client(okHttpClient)
                    .baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .build();
        }
        return retrofit;
    }
}

活动代码：

private void getCoinData() {
    loaderLayout(true);
    Call<GoldListResponse> call = apiInterface.getGoldPrice();
    call.enqueue(new Callback<GoldListResponse>() {
        @Override
        public void onResponse(Call<GoldListResponse> call, Response<GoldListResponse> response) {
            if (response.isSuccessful()) {
                if (response.body() != null) {
                    loaderLayout(false);
                    model.clear();
                    model.addAll(response.body().getGoldBoard());
                    coinAdapter.notifyDataSetChanged();
                    isSendApi = true;
                }
            }
        }

        @Override
        public void onFailure(Call<GoldListResponse> call, Throwable t) {
            Log.e("priceResLog", "Err : " + t.getMessage());
        }
    });
}

我该如何解决？请帮助我，谢谢。

Answer 1

添加以下代码

public Retrofit getRetrofit(Gson gson) {
            return new Retrofit.Builder()
                    .baseUrl(ZoneApplication.getContext().getString(R.string.feed_data_base_url))
                    .client(HttpClientService.getUnsafeOkHttpClient())
                    .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                    .addConverterFactory(new NullOnEmptyConverterFactory())
                    .addConverterFactory(GsonConverterFactory.create(gson))
                    .build();

        }

或将您的代码更改为

public static Retrofit getClient() {

        OkHttpClient okHttpClient = new OkHttpClient.Builder()
                .readTimeout(60, TimeUnit.SECONDS)
                .writeTimeout(60, TimeUnit.SECONDS)
                .connectTimeout(60, TimeUnit.SECONDS)
                .build();

        if (retrofit == null) {
            retrofit = new Retrofit.Builder()
                    .client(HttpClientService.getUnsafeOkHttpClient())
                    .baseUrl(BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .build();
        }
        return retrofit;
    }

创建另一个名为 HttpClientService 的类并添加以下代码

public class HttpClientService {
    public static OkHttpClient getUnsafeOkHttpClient() {

        try {
            final TrustManager[] trustAllCerts = new TrustManager[]{
                    new X509TrustManager() {
                        @SuppressLint("TrustAllX509TrustManager")
                        @Override
                        public void checkClientTrusted(
                                java.security.cert.X509Certificate[] chain,
                                String authType) {
                            //Do nothing
                        }

                        @SuppressLint("TrustAllX509TrustManager")
                        @Override
                        public void checkServerTrusted(
                                java.security.cert.X509Certificate[] chain,
                                String authType) {
                            //Do nothing
                        }

                        @Override
                        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                            return new java.security.cert.X509Certificate[0];
                        }
                    }};
            final SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, trustAllCerts,
                    new java.security.SecureRandom());

            final SSLSocketFactory sslSocketFactory = sslContext
                    .getSocketFactory();

            OkHttpClient okHttpClient = new OkHttpClient.Builder()
                    .sslSocketFactory(sslSocketFactory)
                    .hostnameVerifier(org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER)
                    .build();
            return okHttpClient;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }
}

Answer 2

用下面给出的类替换你的 ApiUtilsPrice 价格：

public class RetroFitSingleton {

private static final String TAG = RetroFitSingleton.class.getSimpleName();
private static final String SERVER_URL = "SERVER_URL/A"; 
private static Retrofit retrofit;
private static RetroInterface retroInterface;


public static RetroInterface getInstance(Activity activity) {
    initializeRetroFit(activity);
    return retroInterface;
}

private static void initializeRetroFit(Activity activity) {
    if (retrofit == null) {
        OkHttpClient okHttpClient = UnsafeOkHttpClient.getUnsafeOkHttpClient();
        HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
        logging.setLevel(HttpLoggingInterceptor.Level.BODY);
        OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
        httpClient.readTimeout(60, TimeUnit.SECONDS);
        httpClient.connectTimeout(60, TimeUnit.SECONDS);
        httpClient.addInterceptor(logging);
        retrofit = new Retrofit.Builder().client(httpClient.build()).addConverterFactory(GsonConverterFactory.create()).baseUrl(SERVER_URL).client(okHttpClient).build();

        retroInterface = retrofit.create(RetroInterface.class);
    }
} }

将下面给出的文件导入到您的代码中：

public class UnsafeOkHttpClient {
public static OkHttpClient getUnsafeOkHttpClient() {
    try {
        // Create a trust manager that does not validate certificate chains
        final TrustManager[] trustAllCerts = new TrustManager[] {
                new X509TrustManager() {
                    @Override
                    public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    @Override
                    public void checkServerTrusted(java.security.cert.X509Certificate[] chain, String authType) throws CertificateException {
                    }

                    @Override
                    public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                        return new java.security.cert.X509Certificate[]{};
                    }
                }
        };

        // Install the all-trusting trust manager
        final SSLContext sslContext = SSLContext.getInstance("SSL");
        sslContext.init(null, trustAllCerts, new java.security.SecureRandom());

        // Create an ssl socket factory with our all-trusting manager
        final SSLSocketFactory sslSocketFactory = sslContext.getSocketFactory();

        OkHttpClient.Builder builder = new OkHttpClient.Builder();
        builder.sslSocketFactory(sslSocketFactory, (X509TrustManager)trustAllCerts[0]);
        builder.hostnameVerifier(new HostnameVerifier() {
            @Override
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        });

        OkHttpClient okHttpClient = builder.build();
        return okHttpClient;
    } catch (Exception e) {
        e.printStackTrace();
        throw new RuntimeException(e);
    }
}}