[Struts] Use bean in session

[Barbidure]

Hello,

I try to use Bean in session with Spring and Struts, but I found this error :

org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name '/resultatRecherche' defined in ServletContext resource [/WEB-INF/action-servlet.xml]: 
Cannot resolve reference to bean 'habilitationAccess' while setting bean property 'habilitationAccess'; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'habilitationAccess': Scope 'session' is not active for the current thread; 
consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; 
nested exception is java.lang.IllegalStateException: No thread-bound request found: 
Are you referring to request attributes outside of an actual web request? If you are actually operating within a web request and still receive this message,your code is probably running outside of DispatcherServlet/DispatcherPortlet: 
In this case, use RequestContextListener or RequestContextFilter to expose the current request.

Spring create the bean as a Singleton, not as a bean in web session.

For information, I linked Struts and Spring with org.springframework.web.struts.ContextLoaderPlugIn (see the Struts-config.xml below)

In the web.xml, I declared the RequestContextListener

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
	<display-name>myStrutsSpringApplication</display-name>

	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			/WEB-INF/spring/application-context.xml
		</param-value>
	</context-param>

	<filter>
		<filter-name>requestContextFilter</filter-name>
		<filter-class>org.springframework.web.filter.RequestContextFilter</filter-class>
	</filter>

	<listener>
		<listener-class>
			org.springframework.web.context.ContextLoaderListener
		</listener-class>
	</listener>

	<servlet>
		<servlet-name>action</servlet-name>
		<servlet-class>
			org.apache.struts.action.ActionServlet
		</servlet-class>
		<init-param>
			<param-name>config</param-name>
			<param-value>/WEB-INF/struts-config.xml</param-value>
		</init-param>
		<init-param>
			<param-name>debug</param-name>
			<param-value>2</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>

	<servlet-mapping>
		<servlet-name>action</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>

	<welcome-file-list>
		<welcome-file>/accueil.do</welcome-file>
		<welcome-file>/index.html</welcome-file>
	</welcome-file-list>
</web-app>

I tried with RequestContextListener, RequestContextFilter or the both… The problem is already the same.

My struts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>

	<form-beans>
		<form-bean name="SearchResultForm"
			type="com.it.SearchResultForm" />
	</form-beans>

	<action-mappings>
		<action name="SearchResultForm" path="/resultatRecherche"
			type="org.springframework.web.struts.DelegatingActionProxy"
			parameter="actionName">
			<forward name="success" path="resultatRecherche.tiles"
				redirect="false" />
		</action>

	</action-mappings>

	<plug-in
		className="org.springframework.web.struts.ContextLoaderPlugIn">
		<set-property property="contextConfigLocation"
			value="/WEB-INF/action-servlet.xml,/WEB-INF/spring/application-context.xml" />
	</plug-in>

	<plug-in className="org.apache.struts.tiles.TilesPlugin">
		<set-property property="definitions-config"
			value="/WEB-INF/tiles-def.xml" />
		<set-property property="moduleAware" value="true" />
		<set-property property="definitions-parser-validate"
			value="true" />
	</plug-in>

</struts-config>

My action-servlet.xml, for mapping action mapping’s path and Bean
<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

	<bean id="abstractAction" abstract="true">
		<property name="habilitationAccess" ref="habilitationAccess" />
	</bean>

	<bean name="/resultatRecherche" class="com.it.SearchResultAction" parent="abstractAction">
		<property name="articleService" ref="articleService"/>
	</bean>

</beans>

And to finish, the application-context.xml, to declare service, DAO and bean in session.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:jee="http://www.springframework.org/schema/jee"
	xmlns:util="http://www.springframework.org/schema/util"
	xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd">

	<!--	HABILITATION	-->
	<bean id="habilitationAccess"
		class="com.it.HabilitationAccessImpl" scope="session">
	</bean>
	<!--	END HABILITATION	-->

	<bean
	class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="order" value="0" />
		<property name="ignoreUnresolvablePlaceholders" value="true" />
		<property name="location">
			<value>${conf.spring.wls11g}</value>
		</property>
	</bean>

	<jee:jndi-lookup id="dataSource" jndi-name="${DATASOURCE }"
		cache="true" lookup-on-startup="true" />

	<!-- DAO -->
	<bean id="abstractDao" abstract="true">
		<property name="dataSource" ref="dataSource" />
		<property name="habilitationAccess" ref="habilitationAccess" />
	</bean>

	<bean id="articleInc"
		class="org.springframework.jdbc.support.incrementer.OracleSequenceMaxValueIncrementer">
		<property name="dataSource" ref="dataSource" />
		<property name="incrementerName" value="S_T_ARTICLE" />
	</bean>
	<bean id="articleDAO" parent="abstractDao"
		class="com.it.JdbcArticleDAOImpl">
		<property name="incrementer" ref="articleInc" />
	</bean>
	<!-- END DAO -->

	<!-- SERVICE -->
	<bean id="articleService" class="com.it.ArticleServiceImpl">
		<property name="articleDAO" ref="articleDAO"/>
	</bean>
	<!-- END SERVICE -->

</beans>

I just want to create one bean in session and inject this into Action Struts and DAO.
Someone have an idea?

Thank you

Barbidure


P.S. : Servlet-api : version 2.5

[Marten Deinum]

Your filter doesn't do anything. If you add a filter you need to map it to a url, only adding a filter element is basicly useless.

[Barbidure]

Yes, I saw this error after my post, and added in the web.xml this configuration :

<filter-mapping>
	<filter-name>requestContextFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

After, the weblogic deployments were updated. I have already the same problem.

Error An error occurred during activation of changes, please see the log for details.

Error weblogic.application.ModuleException:

Error No thread-bound request found: Are you referring to request attributes outside of an actual web request? If you are actually operating within a web request and still receive this message,your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

Any idea?

[Marten Deinum]

I wasn't completly finished . You are also duplicating the amount of beans loaded you are loading the 'application-context.xml' twice, which you really shouldn't be doing. In your case simply declaring a ContextLoaderPlugin should be enough.

[Barbidure]

For summary, I changed the web.xml with the Filter and the filter-mapping

<filter>
	<filter-name>requestContextFilter</filter-name>
	<filter-class>org.springframework.web.filter.RequestContextFilter</filter-class>
</filter>

<filter-mapping>
	<filter-name>requestContextFilter</filter-name>
	<url-pattern>/*</url-pattern>
</filter-mapping>

And in the struts-action.xml, I declared the ContextLoaderPlugin with only one file

	
<plug-in
	className="org.springframework.web.struts.ContextLoaderPlugIn">
	<set-property property="contextConfigLocation"
		value="/WEB-INF/action-servlet.xml" />
</plug-in>

But, weblogic return always the same error :

org.springframework.beans.factory.BeanCreationException: Error creating bean wit
h name '/resultatRecherche' defined in ServletContext resource [/WEB-INF/action-
servlet.xml]: Cannot resolve reference to bean 'habilitationAccess' while settin
g bean property 'habilitationAccess'; nested exception is org.springframework.be
ans.factory.BeanCreationException: Error creating bean with name 'habilitationAc
cess': Scope 'session' is not active for the current thread; consider defining a
 scoped proxy for this bean if you intend to refer to it from a singleton; neste
d exception is java.lang.IllegalStateException: No thread-bound request found: A
re you referring to request attributes outside of an actual web request? If you
are actually operating within a web request and still receive this message,your
code is probably running outside of DispatcherServlet/DispatcherPortlet: In this
 case, use RequestContextListener or RequestContextFilter to expose the current
request.

[Marten Deinum]

There is also an error in your configuration, next to scope="session" you also need to use an aop:scoped-proxy else it it not going to work. Which is also explained in the reference guide

<bean id="habilitationAccess" class="com.it.HabilitationAccessImpl" scope="session">
  <aop:scoped-proxy />
</bean>

which after closer inspection is also mentioned in the stacktrace...

org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name '/resultatRecherche' defined in ServletContext resource [/WEB-INF/action-servlet.xml]: 
Cannot resolve reference to bean 'habilitationAccess' while setting bean property 'habilitationAccess'; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'habilitationAccess': Scope 'session' is not active for the current thread; 
consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; 
nested exception is java.lang.IllegalStateException: No thread-bound request found: 
Are you referring to request attributes outside of an actual web request? If you are actually operating within a web request and still receive this message,your code is probably running outside of DispatcherServlet/DispatcherPortlet: 
In this case, use RequestContextListener or RequestContextFilter to expose the current request.

[Barbidure]

That's working!

Thank you