Question

interesting problem:

I have a Domain Class which looks like

class Dummy {
    String key = (''+new Date()).encodeAsSHA256()
}

When I try to start my App, I get a long stacktrace / error message stating

Invocation of init method failed; nested exception is org.hibernate.InstantiationException: could not instantiate test objectmad.Dummy
...
Caused by MissingMethodException: No signature of method: java.lang.String.encodeAsSHA256() is applicable for argument types: () values: []

now, if I remove the .encodeAsSHA256(), start the application in dev mode and re-insert the encode, it works 🙂

So basically, the code works @ runtime, but it seems that @ initialisation time, the String class isn’t ready for the encoders yet.

Any idea how I can fix this without creating a custom constructor?

Answer 1

found a solution: the encoder can also be invoked directly, but you have to know the right package…

import org.codehaus.groovy.grails.plugins.codecs.SHA256Codec

class Dummy {
    String key = SHA256Codec.encode(''+new Date())
}

…solves the problem…