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POUsing Spring AOP on App Engine causes StackOverflowError
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  1. POUsing Spring AOP on App Engine causes StackOverflowError
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    copied!<p>We have an app running on App Engine and using Spring framework. Recently we have added some new features that are based on AOP. We decided to use @AspectJ style hence we added <code>&lt;aop:aspectj-autoproxy&gt;</code> into our XML based configuration and implemented respective aspects. Everything is working OK on development server, however, when deployed to the cloud environment we get <code>java.lang.StackOverflowError</code> every time the app is being initialized.</p> <p>The bean that cannot be created and causes the error is configuration class annotated with <code>@Configuration</code> annotation. It seems that basically any configuration bean can cause the error.</p> <p>Below you can see the corresponding stack trace.</p> <pre><code>org.springframework.web.context.ContextLoader initWebApplicationContext: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'objectifyConfig' defined in URL [jar:file:/base/data/home/apps/{app-id}/8.372375422460842231/WEB-INF/lib/{app-name}-1.0-SNAPSHOT.jar!/{path-to-class}/ObjectifyConfig.class]: Initialization of bean failed; nested exception is java.lang.StackOverflowError at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:529) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:389) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:294) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112) at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548) at org.mortbay.jetty.servlet.Context.startContext(Context.java:136) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:219) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:194) at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:134) at com.google.apphosting.runtime.JavaRuntime$RequestRunnable.run(JavaRuntime.java:446) at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:435) at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:442) at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:186) at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:306) at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:298) at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:439) at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:251) at java.lang.Thread.run(Thread.java:724) Caused by: java.lang.StackOverflowError at java.util.concurrent.ConcurrentSkipListSet.contains(ConcurrentSkipListSet.java:214) at sun.misc.URLClassPath$LoaderSearchCursor.nextLoader(URLClassPath.java:598) at sun.misc.URLClassPath.getLoader(URLClassPath.java:365) at sun.misc.URLClassPath.findResource(URLClassPath.java:213) at java.net.URLClassLoader$2.run(URLClassLoader.java:551) at java.net.URLClassLoader$2.run(URLClassLoader.java:549) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findResource(URLClassLoader.java:548) at com.google.apphosting.runtime.security.UserClassLoader.findResource(UserClassLoader.java:723) at java.lang.ClassLoader.getResource(ClassLoader.java:1142) at com.google.apphosting.runtime.security.UserClassLoader$3.run(UserClassLoader.java:757) at com.google.apphosting.runtime.security.UserClassLoader$3.run(UserClassLoader.java:751) at java.security.AccessController.doPrivileged(Native Method) at com.google.apphosting.runtime.security.UserClassLoader.findResource(UserClassLoader.java:751) at java.lang.ClassLoader.getResource(ClassLoader.java:1142) at com.google.apphosting.runtime.security.UserClassLoader$3.run(UserClassLoader.java:757) at com.google.apphosting.runtime.security.UserClassLoader$3.run(UserClassLoader.java:751) at java.security.AccessController.doPrivileged(Native Method) at com.google.apphosting.runtime.security.UserClassLoader.findResource(UserClassLoader.java:751) at java.lang.ClassLoader.getResource(ClassLoader.java:1142) at com.google.apphosting.runtime.security.UserClassLoader$3.run(UserClassLoader.java:757) at com.google.apphosting.runtime.security.UserClassLoader$3.run(UserClassLoader.java:751) at java.security.AccessController.doPrivileged(Native Method) at com.google.apphosting.runtime.security.UserClassLoader.findResource(UserClassLoader.java:751) at java.lang.ClassLoader.getResource(ClassLoader.java:1142) ... </code></pre> <p>Update: I put the issue into the App Engine issue tracker along with the sample app that demonstrates the problem. Please follow the <a href="https://code.google.com/p/googleappengine/issues/detail?id=10413&amp;q=Type%3DDefect&amp;sort=-id&amp;colspec=ID%20Type%20Component%20Status%20Stars%20Summary%20Language%20Priority%20Owner%20Log" rel="noreferrer">link</a> to see details.</p>
 

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