最近在寫(xiě)做一個(gè)Android TV的項(xiàng)目，其中有一個(gè)功能是獲取天氣。在模擬器上測(cè)試時(shí)，是可用的。但當(dāng)我在電視盒子上運(yùn)行時(shí)出現(xiàn)了問(wèn)題（報(bào)了SSLHandshakeExceptiion）。這里我訪(fǎng)問(wèn)網(wǎng)絡(luò)用的是zhy的OKHttpUtils，于是我查閱了許多資料。發(fā)現(xiàn)是證書(shū)沒(méi)有被信任的原因，但是我所訪(fǎng)問(wèn)的是心知天氣的接口，所以應(yīng)該不是接口問(wèn)題。而且我是通過(guò)ip去獲取本地天氣的（在之前通過(guò)網(wǎng)絡(luò)訪(fǎng)問(wèn)獲取的網(wǎng)絡(luò)ip）。在我一籌莫展的時(shí)候，我發(fā)現(xiàn)了這篇文章：
http://blog.csdn.net/Kenway090704/article/details/73817700
這里面提到，出現(xiàn)問(wèn)題的可能有兩種：
1，時(shí)間問(wèn)題。
2，證書(shū)不被信任。
于是我查看了電視盒子的時(shí)間，時(shí)2016年的某一天，所以我判斷是時(shí)間問(wèn)題。但是，盒子的時(shí)間是通過(guò)網(wǎng)絡(luò)獲取的，而且我無(wú)法修改。像我這種碼農(nóng)，人微言輕的，也不方便讓公司換個(gè)盒字給我測(cè)試。于是我使用了上文中的第二個(gè)辦法，修改OKHttpClient的創(chuàng)建方式信任該證書(shū)，以得到天氣情況。這里我做了簡(jiǎn)單的封裝。
下面是代碼:

**
 * 網(wǎng)絡(luò)獲取中證書(shū)出現(xiàn)問(wèn)題時(shí)，無(wú)法正常返回?cái)?shù)據(jù)。（有可能是因?yàn)闀r(shí)間問(wèn)題）
 * Created by sjw on 2017/10/24.
 */

public class OkHttpHelper implements Runnable {
    private OkHttpClient okHttpClient;
    private WeatherBackListener weatherBackListener;
    private String url;
    private String response;
    private Handler handler = new Handler(new Handler.Callback() {
        @Override
        public boolean handleMessage(Message msg) {
            weatherBackListener.onWeatherBack(response);

            return false;
        }
    });

    @Override
    public void run() {
        okHttpClient = getUnsafeOkHttpClient();
        Request request = new Request.Builder().url(url).build();
        try {
            Response response = okHttpClient.newCall(request).execute();
            if (response.isSuccessful()) {
                this.response = response.body().string();
                handler.sendEmptyMessage(1);
            } else {
                this.response="失敗";
            }
        } catch (IOException e) {
            this.response="失敗";
            e.printStackTrace();
        }
    }

    public interface WeatherBackListener {
        void onWeatherBack(String response);
    }

    public void getWeather(String url, WeatherBackListener weatherBackListener) {
        this.url = url;
        this.weatherBackListener = weatherBackListener;
        new Thread(this).start();
    }

    private 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);
            builder.hostnameVerifier(new HostnameVerifier() {
                @Override
                public boolean verify(String hostname, SSLSession session) {
                    return true;
                }
            });

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

這里是調(diào)用代碼的方法：

  OkHttpHelper okHttpHelper = new OkHttpHelper();
                okHttpHelper.getWeather(url, weatherBackListener);