org.springframework.beans.factory.BeanCreationException: Error creating bean with name

Question

I got this error when I was writing a query:

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationController' defined in ServletContext resource [/WEB-INF/controller-spring-beans.xml]: Cannot resolve reference to bean 'sessionDao' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionDao': Injection of persistence dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'emf' defined in ServletContext resource [/WEB-INF/spring-servlet.xml]: Invocation of init method failed; nested exception is java.lang.OutOfMemoryError: PermGen space

Caused By:

at org.mortbay.jetty.servlet.ServletHolder.makeUnavailable(ServletHolder.java:406)
at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:449)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:263)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:676)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1239)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:466)
at org.mortbay.jetty.plugin.Jetty6PluginWebAppContext.doStart(Jetty6PluginWebAppContext.java:124)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.plugin.AbstractJettyRunMojo.restartWebApp(AbstractJettyRunMojo.java:446)
at org.mortbay.jetty.plugin.AbstractJettyRunMojo$1.filesChanged(AbstractJettyRunMojo.java:407)
at org.mortbay.util.Scanner.reportBulkChanges(Scanner.java:486)
at org.mortbay.util.Scanner.reportDifferences(Scanner.java:352)
at org.mortbay.util.Scanner.scan(Scanner.java:280)
at org.mortbay.util.Scanner$1.run(Scanner.java:232)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)

I tried:

Changing <context:component-scan base-package="packageName" /> in spring-servlet.xml

Adding <mvc:annotation-driven /> in spring-servlet.xml

I am pretty lost with this error.

Answer 1

nested exception is java.lang.OutOfMemoryError: PermGen space

Above line from exception message means you're running out of memory due to the PermGem space not being high enough. You can increase this with a launch argument like so:

-XX:MaxPermSize=128m