java.lang.IllegalArgumentException: URI is not hierarchical executable jar file

Question

I searched for a solution to my problem but I could not find an answer.
In a client server chat application the client wants to get the server's public key which is stored in a Server.cer file.

URL resource = this.getClass().getClassLoader().getResource("Server.cer");
File file = new File(resource.toURI());
FileInputStream fileInputStream = new FileInputStream(file);
BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
CertificateFactory cf = CertificateFactory.getInstance("X.509");
while(bufferedInputStream.available() > 0){
    certificate = cf.generateCertificate(bufferedInputStream);
}
publicKey = certificate.getPublicKey();

This works fine when I run my class in Eclipse but when I export it as an executable jar file I get:

java.lang.IllegalArgumentException: URI is not hierarchical

Could you please help me resolve this problem because I need the executable jar file to work.

This should be related : http://stackoverflow.com/questions/18055189/why-my-uri-is-not-hierarchical — Ortomala Lokni, Oct 27 '15 at 13:11

score 0 · Answer 1 · answered Aug 12 '16 at 12:35

I managed to fix the problem. This is how I did it.

    Certificate certificate = null;

    //Get server's public key which is stored in a file called Server.cer (RSA-1024 bit).
    InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("Server.cer");
    BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    while(bufferedInputStream.available() > 0){
        certificate = cf.generateCertificate(bufferedInputStream);
    }
    publicKey = certificate.getPublicKey();

    bufferedInputStream.close();
    inputStream.close();

java.lang.IllegalArgumentException: URI is not hierarchical executable jar file

1 Answers1