I"m really stumped here. I've upgraded our Spring libraries from 4.0.6 to 4.3.2. One of our tests fail when running with 4.3.2. This is the code in question:
@Bean(name = SCHEDULER_FACTORY)
public SchedulerFactoryBean getSchedulerFactory()
{
SchedulerFactoryBean schedulerFactory = new SchedulerFactoryBean();
schedulerFactory.setConfigLocation(schedulerConfig);
schedulerFactory.setResourceLoader(null);
schedulerFactory.setDataSource(dataSource);
schedulerFactory.setJobFactory(getSchedulerJobFactory());
schedulerFactory.setAutoStartup(false);
return schedulerFactory;
}
@Bean(name = SCHEDULER)
public Scheduler getScheduler()
{
return getSchedulerFactory().getScheduler();
}
I'm getting the error java.lang.ClassFormatError: Duplicate method name&signature in class file org/springframework/scheduling/quartz/SchedulerFactoryBean$$EnhancerBySpringCGLIB$$bee87fe8$$EnhancerBySpringCGLIB$$6bb26669.
Running the test using spring 4.0.6 framework works perfectly fine, but with 4.3.2, it's failing. When using 4.0.6, I was using cglib no dependencies library. With 4.3.2, the tests fail regardless of whether or not I use cglib.
Spring embeds cglib and objensis into 4.3.* core library. "Furthermore, Spring Framework 4.3 embeds the updated ASM 5.1, CGLIB 3.2.4, and Objenesis 2.4 in spring-core.jar." SpringDocs
We were using Java 8 and cglib-no-dep 2.2 with Spring framework 4.0.6. We tried running this code with and without the standalone library and see the same results.
Stack trace:
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.quartz.Scheduler]: Factory method 'getScheduler' threw exception; nested exception is org.springframework.cglib.core.CodeGenerationException:java.lang.reflect.InvocationTargetException >null
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
at org.springframework.beans.factory.support.ConstructorResolver$3.run(ConstructorResolver.java:582)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:579)
... 112 more
Caused by: org.springframework.cglib.core.CodeGenerationException: java.lang.reflect.InvocationTargetException >null
at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:345)
at org.springframework.cglib.proxy.Enhancer.generate(Enhancer.java:492)
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:93)
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 188.486 sec
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:91)
at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61)
at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34)
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:116)
at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:291)
at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.java:480)
at org.springframework.cglib.proxy.Enhancer.createClass(Enhancer.java:337)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.enhanceFactoryBean(ConfigurationClassEnhancer.java:452)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:338)
at com.example.SpringConfiguration$$EnhancerBySpringCGLIB$$54d3cb35.getSchedulerFactory(<generated>)
at com.example.SpringConfiguration.getScheduler(SpringConfiguration.java:242)
at com.example.SpringConfiguration$$EnhancerBySpringCGLIB$$54d3cb35.CGLIB$getScheduler$24(<generated>)
at com.example.SpringConfiguration$$EnhancerBySpringCGLIB$$54d3cb35$$FastClassBySpringCGLIB$$a2a6e004.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356)
at com.example.SpringConfiguration$$EnhancerBySpringCGLIB$$54d3cb35.getScheduler(<generated>)
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.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
... 115 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor26.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:413)
at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:336)
... 140 more
Caused by: java.lang.ClassFormatError: Duplicate method name&signature in class file org/springframework/scheduling/quartz/SchedulerFactoryBean$$EnhancerBySpringCGLIB$$bee87fe8$$EnhancerBySpringCGLIB$$6bb26669
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
... 145 more
This is definetly a bug in cglib. It seems like it does not currectly determines a method in the type hierarchy to be equal to another method. Are you using Java 8 in combination with default methods in interfaces?
Cglib is not really tested for modern Java versions and experiences only little maintenance. Newer features sometimes cause trouble when using the library.