Android HttpsURLConnection 仅在 Android 4.4.2 nexus 设备上抛出 IllegalStateException

Question

我有以下代码适用于许多 Android 设备(Motorola Xoom(4.0.4、Samsung Galaxy S3(4.2.2)、Samsung galaxy tab 3(4.3))，但它不适用于 nexus 7 或 nexus 4 两者 (4.4.2) 所以要么是 nexus 设备问题要么是 4.4.2 android 版本。

httpsURLConnection = (HttpsURLConnection)url.openConnection();

if(socketFactory!=null){
    httpsURLConnection.setSSLSocketFactory(socketFactory);
} else {
   log.w("tryConnecting : socket factory is null");
}
httpsURLConnection.setHostnameVerifier(new MzHostNameVerifier());

httpsURLConnection.connect();
int responseCode = httpsURLConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK){
Certificate[] certificate = httpsURLConnection.getServerCertificates();
httpsURLConnection.disconnect();
return certificate;
} else {
log.e("Connection error, code : "+responseCode);
return null;
}

我在网上收到异常 java.lang.IllegalStateException: Connection has not yet been established :

   **Certificate[] certificate = httpsURLConnection.getServerCertificates();**

我不明白为什么以及为什么它适用于其他设备而不是 nexus 7/nexus 4。我需要证书来对其进行一些检查，我该怎么办？是不是少了什么？

非常感谢

Answer 1

我也有同样的问题。

我的代码在三星 S3 上运行，但在三星 S4 上出现异常“java.lang.IllegalStateException:尚未建立连接”失败。

要解决此问题，请在从连接中读取一些数据后调用 getServerCertificates()。

在调用 getServerCertificates() 之前先调用 getInputStream() 以通过连接执行一些输入/输出。

请看下面的例子:

private boolean ValidateHTTPSCertificate()
    {
        boolean result = false;
        String serverCertPublicSerial = "abcdefghijklmnopqrstuvwxyz";

        try
        {
            URL url = new URL( "https://your-url-goes-here" );
            HttpsURLConnection con = (HttpsURLConnection) url.openConnection();

            if(con!=null){

                try {
                    con.connect();

                    int respCode =  con.getResponseCode();
                    String pageResult = convertInputStreamToString(con.getInputStream());

                    Certificate[] certs = con.getServerCertificates();
                    for(Certificate cert : certs){

                        X509Certificate x509cert = (X509Certificate)cert;

                        BigInteger serialNum = x509cert.getSerialNumber();

                        String name = x509cert.getIssuerDN().getName();
                        String publicKeySerial = serialNum.toString(16);

                        if (publicKeySerial.toLowerCase().equals(serverCertPublicSerial.toLowerCase()) == true )
                        {
                            result = true;
                            break;
                        }
                    }
                    //con.disconnect();
                } catch (SSLPeerUnverifiedException e) {
                    e.printStackTrace();
                } catch (IOException e){
                    e.printStackTrace();
                }
            }
        }
        catch (Exception ex)
        {
            String  msg = ex.getMessage();
        }

        return result;
    }