配置HTTPS证书

private HttpsURLConnection httpsConfig() throws Exception{
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    InputStream in = activity.getAssets().open("new-jzbank.cer");//new-jzbank.cer为证书文件
    Certificate cartificate = cf.generateCertificate(in);
    in.close();
    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    keystore.load(null, null);
    keystore.setCertificateEntry("trust", cartificate);

    TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
    trustManagerFactory.init(keystore);

    SSLContext context = SSLContext.getInstance("TLS");
    context.init(null, trustManagerFactory.getTrustManagers(), null);

    HttpsURLConnection urlConnection = (HttpsURLConnection) url.openConnection();
    urlConnection.setSSLSocketFactory(context.getSocketFactory());

    return urlConnection;
}