Forum für diejenigen, die für Android programmieren
Anonymous
Schlechtes Base64 in Android
Post
by Anonymous » 17 Jan 2026, 07:34
Hallo, ich verwende den folgenden Code, um die Details eines Zertifikats zu analysieren. Alles ist in Ordnung, bis auf das unten erwähnte kleine Problem.
Code: Select all
package android.net.http;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileReader;
import java.io.InputStream;
import java.security.cert.Certif`enter code here`icate;
import java.security.cert.CertificateFactory;
import java.security.cert.CertificateParsingException;
import java.security.cert.X509Certificate;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.util.Base64;
import android.util.Base64InputStream;
import android.util.Log;
public class SslCertificate1Activity extends Activity
{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
String text = "-----BEGIN CERTIFICATE-----\n"+
"MIIC/TCCAmagAwIBAgIBKjANBgkqhkiG9w0BAQQFADCBqDEiMCAGA1UEAxMZeG1sZ2F0ZXdheS5p\n"+
"dHMudXRleGFzLmVkdTEoMCYGA1UECxMfSW5mb3JtYXRpb24gVGVjaG5vbG9neSBTZXJ2aWNlczEq\n"+
"MCgGA1UEChMhVGhlIFVuaXZlcnNpdHkgb2YgVGV4YXMgYXQgQXVzdGluMQ8wDQYDVQQHEwZBdXN0\n"+
"aW4xDjAMBgNVBAgTBVRleGFzMQswCQYDVQQGEwJVUzAeFw0wNDA1MDkwNTMwMTBaFw0wNTA1MDQw\n"+
"NTMwMTBaMIGAMQswCQYDVQQGEwJVUzEOMAwGA1UECBMFVGV4YXMxDzANBgNVBAcTBkF1c3RpbjEq\n"+
"MCgGA1UEChMhVGhlIFVuaXZlcnNpdHkgb2YgVGV4YXMgYXQgQXVzdGluMRMwEQYDVQQLEwpUb29s\n"+
"cyBUZWFtMQ8wDQYDVQQDEwZDbGllbnQwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAJ6PABjb\n"+
"zXUkgo29S4uv1Qz9reo1/tP4pkQTGAldSbtA4hVtA/3sjw2+u3kgxYruAi2cXV2k0RPZhsUZjlDk\n"+
"jMPb/dlY81bD8gqe3lu3ezugJrlArlpfWN6PlufbTjxHSqIA0XD9R5/ZECaUV9dD43K5KdWUCy99\n"+
"YKDiSwVPO9F5AgMBAAGjXTBbMB0GA1UdDgQWBBRkCCpscEXxXu8Ba67p6zdh13ypjzAfBgNVHSME\n"+
"GDAWgBR2RsZH2kSY782kBROo92FAWS6sADAJBgNVHRMEAjAAMA4GA1UdDwQHAwUBEiRIkDANBgkq\n"+
"hkiG9w0BAQQFAAOBgQCtV1NzpdVBs5vyb8yLXNA3hA1LsmE/2QanXG4T3UN93BI4HQzx0idnkN1Y\n"+
"0RAQ1rjGeQ1pk3l2DWsPi9mTkCGmYs/EMLkKOBee9ad3BIG6sKwXgbgLyNLgda+Y1bo+SIomq/a7\n"+
"yP92UHMFEegfS/ssECA+Q3hHuU6in3AqLfWH1w==\n"+
"-----END CERTIFICATE-----";
int startIndex = 0;
String cert = text.substring(startIndex,text.length());
byte[] certBytes = cert.getBytes();
InputStream in = new Base64InputStream(new ByteArrayInputStream(
certBytes), 0);
CertificateFactory certFact = CertificateFactory.getInstance ("X.509");
Certificate certGen = certFact.generateCertificate(in);
X509Certificate x509 = (X509Certificate) certGen;
Log.i("","certificate details:"+x509);
}
catch (Exception e)
{
Log.e("testapp", "exception: " + e.getMessage());
}
}
}
und ich erhalte „android.util.BASE64DataException:bad base-64“ in der folgenden Zeile, wenn ich den Debugger gestartet habe:-
Code: Select all
Certificate certGen = certFact.generateCertificate(in);
Anscheinend stimmt etwas mit Base64InputStream nicht. Bitte helfen Sie bei der Behebung der Ausnahme.
Vielen Dank im Voraus
1768631648
Anonymous
Hallo, ich verwende den folgenden Code, um die Details eines Zertifikats zu analysieren. Alles ist in Ordnung, bis auf das unten erwähnte kleine Problem. [code]package android.net.http; import java.io.BufferedReader; import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileReader; import java.io.InputStream; import java.security.cert.Certif`enter code here`icate; import java.security.cert.CertificateFactory; import java.security.cert.CertificateParsingException; import java.security.cert.X509Certificate; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.util.Base64; import android.util.Base64InputStream; import android.util.Log; public class SslCertificate1Activity extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); try { String text = "-----BEGIN CERTIFICATE-----\n"+ "MIIC/TCCAmagAwIBAgIBKjANBgkqhkiG9w0BAQQFADCBqDEiMCAGA1UEAxMZeG1sZ2F0ZXdheS5p\n"+ "dHMudXRleGFzLmVkdTEoMCYGA1UECxMfSW5mb3JtYXRpb24gVGVjaG5vbG9neSBTZXJ2aWNlczEq\n"+ "MCgGA1UEChMhVGhlIFVuaXZlcnNpdHkgb2YgVGV4YXMgYXQgQXVzdGluMQ8wDQYDVQQHEwZBdXN0\n"+ "aW4xDjAMBgNVBAgTBVRleGFzMQswCQYDVQQGEwJVUzAeFw0wNDA1MDkwNTMwMTBaFw0wNTA1MDQw\n"+ "NTMwMTBaMIGAMQswCQYDVQQGEwJVUzEOMAwGA1UECBMFVGV4YXMxDzANBgNVBAcTBkF1c3RpbjEq\n"+ "MCgGA1UEChMhVGhlIFVuaXZlcnNpdHkgb2YgVGV4YXMgYXQgQXVzdGluMRMwEQYDVQQLEwpUb29s\n"+ "cyBUZWFtMQ8wDQYDVQQDEwZDbGllbnQwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAJ6PABjb\n"+ "zXUkgo29S4uv1Qz9reo1/tP4pkQTGAldSbtA4hVtA/3sjw2+u3kgxYruAi2cXV2k0RPZhsUZjlDk\n"+ "jMPb/dlY81bD8gqe3lu3ezugJrlArlpfWN6PlufbTjxHSqIA0XD9R5/ZECaUV9dD43K5KdWUCy99\n"+ "YKDiSwVPO9F5AgMBAAGjXTBbMB0GA1UdDgQWBBRkCCpscEXxXu8Ba67p6zdh13ypjzAfBgNVHSME\n"+ "GDAWgBR2RsZH2kSY782kBROo92FAWS6sADAJBgNVHRMEAjAAMA4GA1UdDwQHAwUBEiRIkDANBgkq\n"+ "hkiG9w0BAQQFAAOBgQCtV1NzpdVBs5vyb8yLXNA3hA1LsmE/2QanXG4T3UN93BI4HQzx0idnkN1Y\n"+ "0RAQ1rjGeQ1pk3l2DWsPi9mTkCGmYs/EMLkKOBee9ad3BIG6sKwXgbgLyNLgda+Y1bo+SIomq/a7\n"+ "yP92UHMFEegfS/ssECA+Q3hHuU6in3AqLfWH1w==\n"+ "-----END CERTIFICATE-----"; int startIndex = 0; String cert = text.substring(startIndex,text.length()); byte[] certBytes = cert.getBytes(); InputStream in = new Base64InputStream(new ByteArrayInputStream( certBytes), 0); CertificateFactory certFact = CertificateFactory.getInstance ("X.509"); Certificate certGen = certFact.generateCertificate(in); X509Certificate x509 = (X509Certificate) certGen; Log.i("","certificate details:"+x509); } catch (Exception e) { Log.e("testapp", "exception: " + e.getMessage()); } } } [/code] und ich erhalte „android.util.BASE64DataException:bad base-64“ in der folgenden Zeile, wenn ich den Debugger gestartet habe:- [code]Certificate certGen = certFact.generateCertificate(in); [/code] Anscheinend stimmt etwas mit Base64InputStream nicht. Bitte helfen Sie bei der Behebung der Ausnahme. Vielen Dank im Voraus
0 Replies
69 Views
Last post by Anonymous
12 Mar 2025, 05:08
0 Replies
73 Views
Last post by Anonymous
12 Mar 2025, 05:08
Schlechtes LSTM für die Aktienkursvorhersage
by
Guest »
14 Jan 2025, 10:58 » in
Python
#Scaling
scaler = MinMaxScaler()
feature_transform = scaler.fit_transform(data )
feature_transform= pd.DataFrame(columns=features, data=feature_transform, index=data.index)
feature_transform.head()...
0 Replies
42 Views
Last post by Guest
14 Jan 2025, 10:58
0 Replies
51 Views
Last post by Anonymous
02 Feb 2025, 20:12
0 Replies
44 Views
Last post by Anonymous
13 Feb 2025, 03:10