Firebase with java admin SDK gives error when project exported as JAR

Question

i am trying to create a java application using firebase admin sdk this code is tested

FileInputStream serviceAccount =
new FileInputStream("path/to/serviceAccountKey.json");

FirebaseOptions options = new FirebaseOptions.Builder().setCredentials(GoogleCredentials.fromStream(serviceAccount)).build();

FirebaseApp.initializeApp(options);

and it works perfectly fine the problem appears when the jar file is exported, when using this command java -jar fileName.jar an exception appears:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/firebase/FirebaseOptions$Builder
    at Launcher.initFirebase(Launcher.java:22)
    at Launcher.main(Launcher.java:32)
Caused by: java.lang.ClassNotFoundException: com.google.firebase.FirebaseOptions$Builder
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 2 more

after searching for the problem, the issue was suggested to be exported jar doesn't include the library. so i forced the exported jar to contain the library like this

still the error is the same. any suggestions?

Jar inside jar will not work, it has to be extracted, see http://stackoverflow.com/a/42200519/104891 and http://stackoverflow.com/a/42660624/104891. — CrazyCoder, Jul 22 '18 at 19:41
@CrazyCoder still exactly the same, i have included the library. check the update — Kareem Elsayed, Jul 22 '18 at 22:25
Please share the [Minimal, Complete, and Verifiable example](http://stackoverflow.com/help/mcve). — CrazyCoder, Jul 23 '18 at 07:25

Firebase with java admin SDK gives error when project exported as JAR

0 Answers0