Add Support for Grails 4

[dustindclark]

Installing version 3.2.0 in a Grails 4 app keeps the app from starting. The error is java.lang.NoClassDefFoundError: org/grails/core/cfg/DeprecatedGrailsConfig. Recaptcha is not in the stack trace, but I've attached it below anyways. Removing recaptcha 3.2.0 allows the app to start again.

I will report back if I find a workaround.

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'convertersConfigurationInitializer': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.grails.web.converters.configuration.ConvertersConfigurationInitializer] from ClassLoader [sun.misc.Launcher$AppClassLoader@659e0bfd]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:265)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1269)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1184)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:845)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:742)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:389)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:311)
    at grails.boot.GrailsApp.run(GrailsApp.groovy:97)
    at grails.boot.GrailsApp.run(GrailsApp.groovy:458)
    at grails.boot.GrailsApp.run(GrailsApp.groovy:445)
    at myapp.Application.main(Application.groovy:11)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.grails.web.converters.configuration.ConvertersConfigurationInitializer] from ClassLoader [sun.misc.Launcher$AppClassLoader@659e0bfd]
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:507)
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:404)
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:389)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:248)
    ... 24 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/grails/core/cfg/DeprecatedGrailsConfig
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
    at java.lang.Class.getDeclaredMethods(Class.java:1975)
    at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:489)
    ... 27 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.grails.core.cfg.DeprecatedGrailsConfig
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 31 common frames omitted

[dustindclark]

Looks like a problem with the grails converter plugin. I took a stab at building a version of this plugin that would compile and run with both Grails 3 and Grails 4 to no avail. As a workaround, explicitly adding a converters dependency in the Grails 4 app resolves this issue:

compile "org.grails.plugins:converters"

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[dustindclark]

This is still a problem. I run into it still while upgrading 3.x apps/plugins to 4.0. Can we reopen?