Struts 2 tutorial errors

[Rusty Enisin]

I am trying to run the Struts 2 + Spring 2 + JPA + AJAX tutorial found at http://struts.apache.org/2.x/docs/struts-2-spring-2-jpa-ajax.html. But exceptions keep getting thrown during startup of tomcat. Try as I might I cannot seem to resolve it. Here is the error:

SEVERE: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor': Cannot create inner bean '(inner bean)' of type [org.springframework.transaction.interceptor.TransactionInterceptor] while setting bean property 'transactionInterceptor'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Cannot resolve reference to bean 'entityManagerFactory' while setting bean property 'entityManagerFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/persistence.xml}
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)': Cannot resolve reference to bean 'transactionManager' while setting bean property 'transactionManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Cannot resolve reference to bean 'entityManagerFactory' while setting bean property 'entityManagerFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/persistence.xml}
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Cannot resolve reference to bean 'entityManagerFactory' while setting bean property 'entityManagerFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/persistence.xml}
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/persistence.xml}
Caused by: java.lang.IllegalStateException: No persistence units parsed from {classpath*:META-INF/persistence.xml}

The key part appears to be

Cannot resolve reference to bean 'entityManagerFactory' while setting bean property 'entityManagerFactory'

All the code is copied directly from the tutorial page. Any ideas?

[Rusty Enisin]

I found that it is really important to have exact version of jars specified. The easiest way to do this is run the maven script that comes in the download for the tutorial. Run the "mvn install" command first. Be sure you have the jta jar. Delete the test dir from the source code unless you have junit (they do not have it in the pom.xml).

Then run "mvn package" and maven will get all the dependent jars and then puts the app source and war file in a directory called "target". The jars are in target/quickstartSNAPSHOT/WEB-INF/lib.

[Eric Nielsen]

Actually it looks to me like the key part is that persistence.xml isn't gettng parsed properly, and thus not allowing it to initialize the EntityManagerFactory. I'd double check that persistence.xml was copied cleanly and placed at the right place of the directory structure.

[Rusty Enisin]

Yes. I had persistance.xml in WebRoot/META-INF. This was incorrect. One of the things I noticed when I ran the maven build is that it was placed in src/META-INF. And applicationContext.xml was placed in src/ but I had placed it in /WEB-INF. It looks I had them in the wrong place.

I have since dropped Hibernate in favor of OpenJPA. And I have found bugs in Sruts2 that were resolved by moving to the latest version of Struts2. Where I had problems with this before, having persistence.xml in the right place seems to solve everything. Go figure...

Thanks for the response.

[julio perez]

I have the same problem.

[Maki Jav]

Why there are no posts from other posters displaying?

[Sharad Sharma]

i had the same problem but I am sorry to say that i exactly don't remember how i fixed this. But I had to make an entry in Struts.xml for Spring framework and had to add a library also. I hope some googling might help you out