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From Rolf Schäuble (Updated) (JIRA) <j...@apache.org>
Subject [jira] [Updated] (CXF-3959) CXF JAX-WS: @PostConstruct methods invoked twice in Spring-based projects
Date Tue, 06 Dec 2011 15:11:40 GMT

     [ https://issues.apache.org/jira/browse/CXF-3959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Rolf Schäuble updated CXF-3959:
-------------------------------

    Attachment: cxf-postconstruct-bug.zip

Sample application that demonstrates the problem.
                
> CXF JAX-WS: @PostConstruct methods invoked twice in Spring-based projects
> -------------------------------------------------------------------------
>
>                 Key: CXF-3959
>                 URL: https://issues.apache.org/jira/browse/CXF-3959
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-WS Runtime
>    Affects Versions: 2.4.2, 2.5
>            Reporter: Rolf Schäuble
>         Attachments: cxf-postconstruct-bug.zip
>
>
> Under the following circumstances, @PostConstruct methods on classes exported as JAX-WS
WebService are invoked twice:
> - The application uses Spring as IoC container
> - Spring's support for JSR 250 annotations is active (using the CommonAnnotationBeanPostProcessor
bean or <context:annotation-config/>
> - The exported bean is declared as Spring bean in the application context
> - The <jaxws:endpoint> declaration refers to the declared bean (<jaxws:endpoint
implementor="#beanName"/>
> The last point is important:
> - <jaxws:endpoint implementor="the.bean.class.name"/> *does not* not show the wrong
behavior
> - <bean id="theBean" class="the.bean.class.name"/>
>   <jaxws:endpoint implementor="#theBean'"/> *does* show the wrong behaviur
>   
> I have built an example application (based on CXF's java_first_spring_support sample)
that shows the problem. It contains two classes:
> 1. PostConstructCalledOnce: this class is exported using the <jaxws:endpoint implementor="the.bean.class.name"/>
synxtax
> 2. PostConstructCalledTwice.java: this class is exported using the <jaxws:endpoint
implementor="#theBean'"/>
> Both classes contain a postConstruct method; both method print the class's name to the
console. When the application is started ("mvn -Pserver"), it can be observed that PostConstructCalledOnce#postConstruct
is called once and PostConstructCalledTwice#postConstruct is called twice.
> Desired behavior: both postConstruct methods should only be invoked once.
> Workaround:
> 1. Annotate the affected classes with CXF's @NoJSR250Annotations annotation
> 2. Use the <jaxws:endpoint implementor="the.bean.class.name"/> syntax. Problem:
This way, Spring is not able to wrap the bean with a proxy (e.g. for transaction support)

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