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Posted to user@struts.apache.org by Adam Ruggles <a....@gmail.com> on 2007/02/26 02:35:08 UTC
NoSuchMethodException: $Proxy18.find()
I am following the guide here
http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
For some reason when trying to map a method other than execute I recieve
the following error:
- Servlet.service() for servlet default threw exception
java.lang.NoSuchMethodException: $Proxy18.find()
Below are the configuration files and a segment of the UserAction class.
struts.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.objectFactory" value="spring" />
<!-- <constant name="struts.devMode" value="true" /> -->
<include file="struts-default.xml"/>
<package name="havoc" extends="struts-default">
<action name="list" class="userAction" method="execute">
<result name="success">/WEB-INF/pages/list.jsp</result>
</action>
<action name="save" class="userAction" method="save">
<result name="success" type="redirect">/list.action</result>
</action>
<action name="find" class="userAction" method="find">
<result name="success">/WEB-INF/pages/index.jsp</result>
</action>
</package>
</struts>
Application Context
<?xml version="1.0" encoding="UTF-8"?>
<beans default-autowire="byName"
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
autowire="no">
<property name="location" value="/WEB-INF/havoc.properties"/>
</bean>
<bean id="config" class="com.havoc.forum.util.Config" autowire="no">
<property name="location" value="/WEB-INF/havoc.properties"/>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!-- This will cause spring to return the raw SessionFactory
instead of the spring proxied one. -->
<!-- <property name="exposeTransactionAwareSessionFactory"
value="false" /> -->
<property name="configurationClass"
value="org.hibernate.cfg.AnnotationConfiguration"/>
<property name="configLocation"
value="classpath:hibernate.cfg.xml"/> <property
name="hibernateProperties">
<props>
<prop
key="hibernate.dialect">${hibernate.dialect}</prop>
<prop
key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop
key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
<prop
key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
<prop
key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
<prop
key="hibernate.current_session_context_class">thread</prop>
<prop
key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
</props>
</property> </bean>
<!--
Instruct Spring to perform declarative transaction management
automatically
on annotated classes.
-->
<tx:annotation-driven transaction-manager="transactionManager" />
<!-- Transaction manager for a single Hibernate SessionFactory
(alternative to JTA) -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory"><ref
bean="sessionFactory"/></property>
</bean>
<!-- Model Objects -->
<bean id="user" class="com.havoc.forum.model.User" />
<bean id="group" class="com.havoc.forum.model.Group" />
<bean id="rank" class="com.havoc.forum.model.Rank" />
<!-- Data Access Objects -->
<bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO" />
<bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO" />
<bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO" />
<!-- Actions -->
<bean id="userAction" class="com.havoc.forum.action.UserAction"
scope="prototype" />
</beans>
UserAction
public class UserAction extends ActionSupport {
...
...
/**
* Returns a user from the database or a new user.
* @return SUCCESS or ERROR.
* @throws Exception if an error occurs.
*/
@Transactional(readOnly = true, propagation = Propagation.REQUIRED,
rollbackFor = PersistenceException.class)
public String find() {
if (user != null && user.getId() != null) {
user = userDAO.find(user.getId());
return SUCCESS;
}
user = new User();
return SUCCESS;
}
Re: NoSuchMethodException: $Proxy18.find()
Posted by Adam Ruggles <a....@gmail.com>.
I'll give that a try, thanks.
Paul Benedict wrote:
> Adam,
>
> I have never seen anyone attach Spring transactional logic to an
> action, and called DAOs straight from the action. That's not good
> practice, because it mashes web, business, and data layers all in one
> place.
>
> I wouldn't blame struts here (yet). I'd first move your code into a
> service object and then inject the service into the action. If there
> really is a problem with Struts, then the problem will persist (pun
> intended); but when you move them to the service layer, it will
> indicate whether you have mis-configured Spring or if Struts is at fault.
>
> Paul
>
> Adam Ruggles wrote:
>> I am following the guide here
>> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
>>
>> For some reason when trying to map a method other than execute I
>> recieve the following error:
>> - Servlet.service() for servlet default threw exception
>> java.lang.NoSuchMethodException: $Proxy18.find()
>>
>> Below are the configuration files and a segment of the UserAction class.
>>
>> struts.xml:
>> <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE struts PUBLIC
>> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
>> "http://struts.apache.org/dtds/struts-2.0.dtd">
>> <struts>
>> <constant name="struts.objectFactory" value="spring" />
>> <!-- <constant name="struts.devMode" value="true" /> -->
>> <include file="struts-default.xml"/>
>> <package name="havoc" extends="struts-default">
>> <action name="list" class="userAction" method="execute">
>> <result name="success">/WEB-INF/pages/list.jsp</result>
>> </action>
>> <action name="save" class="userAction" method="save">
>> <result name="success" type="redirect">/list.action</result>
>> </action>
>> <action name="find" class="userAction" method="find">
>> <result name="success">/WEB-INF/pages/index.jsp</result>
>> </action>
>> </package>
>> </struts>
>>
>> Application Context
>> <?xml version="1.0" encoding="UTF-8"?>
>> <beans default-autowire="byName"
>> xmlns="http://www.springframework.org/schema/beans"
>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>> xmlns:aop="http://www.springframework.org/schema/aop"
>> xmlns:tx="http://www.springframework.org/schema/tx"
>> xsi:schemaLocation="http://www.springframework.org/schema/beans
>> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
>> http://www.springframework.org/schema/aop
>> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
>> http://www.springframework.org/schema/tx
>> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
>>
>> <bean id="propertyConfigurer"
>> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
>> autowire="no">
>> <property name="location" value="/WEB-INF/havoc.properties"/>
>> </bean>
>>
>> <bean id="config" class="com.havoc.forum.util.Config" autowire="no">
>> <property name="location" value="/WEB-INF/havoc.properties"/>
>> </bean>
>> <bean id="dataSource"
>> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
>> <property name="driverClassName" value="${jdbc.driverClassName}"/>
>> <property name="url" value="${jdbc.url}"/>
>> <property name="username" value="${jdbc.username}"/>
>> <property name="password" value="${jdbc.password}"/>
>> </bean>
>> <bean id="sessionFactory"
>> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
>> <property name="dataSource" ref="dataSource"/>
>> <!-- This will cause spring to return the raw SessionFactory
>> instead of the spring proxied one. -->
>> <!-- <property name="exposeTransactionAwareSessionFactory"
>> value="false" /> -->
>> <property name="configurationClass"
>> value="org.hibernate.cfg.AnnotationConfiguration"/>
>> <property name="configLocation"
>> value="classpath:hibernate.cfg.xml"/> <property
>> name="hibernateProperties">
>> <props>
>> <prop
>> key="hibernate.dialect">${hibernate.dialect}</prop>
>> <prop
>> key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>>
>> <prop
>> key="hibernate.show_sql">${hibernate.show_sql}</prop>
>> <prop
>> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>>
>> <prop
>> key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>>
>> <prop
>> key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>>
>> <prop
>> key="hibernate.current_session_context_class">thread</prop>
>> <prop
>> key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>>
>> </props>
>> </property> </bean>
>> <!--
>> Instruct Spring to perform declarative transaction management
>> automatically
>> on annotated classes.
>> -->
>> <tx:annotation-driven transaction-manager="transactionManager" />
>> <!-- Transaction manager for a single Hibernate SessionFactory
>> (alternative to JTA) -->
>> <bean id="transactionManager"
>> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
>> <property name="sessionFactory"><ref
>> bean="sessionFactory"/></property>
>> </bean>
>>
>> <!-- Model Objects -->
>> <bean id="user" class="com.havoc.forum.model.User" />
>> <bean id="group" class="com.havoc.forum.model.Group" />
>> <bean id="rank" class="com.havoc.forum.model.Rank" />
>>
>> <!-- Data Access Objects -->
>> <bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO" />
>> <bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO" />
>> <bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO" />
>> <!-- Actions -->
>> <bean id="userAction" class="com.havoc.forum.action.UserAction"
>> scope="prototype" />
>> </beans>
>>
>> UserAction
>>
>> public class UserAction extends ActionSupport {
>>
>> ...
>> ...
>>
>> /**
>> * Returns a user from the database or a new user.
>> * @return SUCCESS or ERROR.
>> * @throws Exception if an error occurs.
>> */
>> @Transactional(readOnly = true, propagation =
>> Propagation.REQUIRED, rollbackFor = PersistenceException.class)
>> public String find() {
>> if (user != null && user.getId() != null) {
>> user = userDAO.find(user.getId());
>> return SUCCESS;
>> }
>> user = new User();
>> return SUCCESS;
>> }
>>
>>
>
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Re: NoSuchMethodException: $Proxy18.find()
Posted by Paul Benedict <pb...@apache.org>.
Congrats!
Adam Ruggles wrote:
> I found the solution to this and I wanted to post it on the list.
>
> adding proxy-target-class="true" fixes it.
>
> <tx:annotation-driven transaction-manager="transactionManager"
> proxy-target-class="true" />
>
> Adam Ruggles wrote:
>> Creating a service object seems to have worked. Now I'm going to have
>> to re-think using action support. This project is not complicated
>> enough to warrant another layer.
>>
>> Thanks for your help.
>>
>> Paul Benedict wrote:
>>> Adam,
>>>
>>> I have never seen anyone attach Spring transactional logic to an
>>> action, and called DAOs straight from the action. That's not good
>>> practice, because it mashes web, business, and data layers all in one
>>> place.
>>>
>>> I wouldn't blame struts here (yet). I'd first move your code into a
>>> service object and then inject the service into the action. If there
>>> really is a problem with Struts, then the problem will persist (pun
>>> intended); but when you move them to the service layer, it will
>>> indicate whether you have mis-configured Spring or if Struts is at
>>> fault.
>>>
>>> Paul
>>>
>>> Adam Ruggles wrote:
>>>> I am following the guide here
>>>> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
>>>>
>>>> For some reason when trying to map a method other than execute I
>>>> recieve the following error:
>>>> - Servlet.service() for servlet default threw exception
>>>> java.lang.NoSuchMethodException: $Proxy18.find()
>>>>
>>>> Below are the configuration files and a segment of the UserAction
>>>> class.
>>>>
>>>> struts.xml:
>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>> <!DOCTYPE struts PUBLIC
>>>> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
>>>> "http://struts.apache.org/dtds/struts-2.0.dtd">
>>>> <struts>
>>>> <constant name="struts.objectFactory" value="spring" />
>>>> <!-- <constant name="struts.devMode" value="true" /> -->
>>>> <include file="struts-default.xml"/>
>>>> <package name="havoc" extends="struts-default">
>>>> <action name="list" class="userAction" method="execute">
>>>> <result name="success">/WEB-INF/pages/list.jsp</result>
>>>> </action>
>>>> <action name="save" class="userAction" method="save">
>>>> <result name="success" type="redirect">/list.action</result>
>>>> </action>
>>>> <action name="find" class="userAction" method="find">
>>>> <result name="success">/WEB-INF/pages/index.jsp</result>
>>>> </action>
>>>> </package>
>>>> </struts>
>>>>
>>>> Application Context
>>>> <?xml version="1.0" encoding="UTF-8"?>
>>>> <beans default-autowire="byName"
>>>> xmlns="http://www.springframework.org/schema/beans"
>>>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>>> xmlns:aop="http://www.springframework.org/schema/aop"
>>>> xmlns:tx="http://www.springframework.org/schema/tx"
>>>>
>>>> xsi:schemaLocation="http://www.springframework.org/schema/beans
>>>> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
>>>> http://www.springframework.org/schema/aop
>>>> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
>>>> http://www.springframework.org/schema/tx
>>>> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
>>>>
>>>> <bean id="propertyConfigurer"
>>>> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
>>>> autowire="no">
>>>> <property name="location" value="/WEB-INF/havoc.properties"/>
>>>> </bean>
>>>>
>>>> <bean id="config" class="com.havoc.forum.util.Config" autowire="no">
>>>> <property name="location" value="/WEB-INF/havoc.properties"/>
>>>> </bean>
>>>> <bean id="dataSource"
>>>> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
>>>> <property name="driverClassName"
>>>> value="${jdbc.driverClassName}"/>
>>>> <property name="url" value="${jdbc.url}"/>
>>>> <property name="username" value="${jdbc.username}"/>
>>>> <property name="password" value="${jdbc.password}"/>
>>>> </bean>
>>>> <bean id="sessionFactory"
>>>> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
>>>> <property name="dataSource" ref="dataSource"/>
>>>> <!-- This will cause spring to return the raw SessionFactory
>>>> instead of the spring proxied one. -->
>>>> <!-- <property name="exposeTransactionAwareSessionFactory"
>>>> value="false" /> -->
>>>> <property name="configurationClass"
>>>> value="org.hibernate.cfg.AnnotationConfiguration"/>
>>>> <property name="configLocation"
>>>> value="classpath:hibernate.cfg.xml"/> <property
>>>> name="hibernateProperties">
>>>> <props>
>>>> <prop
>>>> key="hibernate.dialect">${hibernate.dialect}</prop>
>>>> <prop
>>>> key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>>>>
>>>> <prop
>>>> key="hibernate.show_sql">${hibernate.show_sql}</prop>
>>>> <prop
>>>> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>>>>
>>>> <prop
>>>> key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>>>>
>>>> <prop
>>>> key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>>>>
>>>> <prop
>>>> key="hibernate.current_session_context_class">thread</prop>
>>>> <prop
>>>> key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>>>>
>>>> </props>
>>>> </property> </bean>
>>>> <!--
>>>> Instruct Spring to perform declarative transaction management
>>>> automatically
>>>> on annotated classes.
>>>> -->
>>>> <tx:annotation-driven transaction-manager="transactionManager" />
>>>> <!-- Transaction manager for a single Hibernate
>>>> SessionFactory (alternative to JTA) -->
>>>> <bean id="transactionManager"
>>>> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
>>>> <property name="sessionFactory"><ref
>>>> bean="sessionFactory"/></property>
>>>> </bean>
>>>>
>>>> <!-- Model Objects -->
>>>> <bean id="user" class="com.havoc.forum.model.User" />
>>>> <bean id="group" class="com.havoc.forum.model.Group" />
>>>> <bean id="rank" class="com.havoc.forum.model.Rank" />
>>>>
>>>> <!-- Data Access Objects -->
>>>> <bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO" />
>>>> <bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO" />
>>>> <bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO" />
>>>> <!-- Actions -->
>>>> <bean id="userAction" class="com.havoc.forum.action.UserAction"
>>>> scope="prototype" />
>>>> </beans>
>>>>
>>>> UserAction
>>>>
>>>> public class UserAction extends ActionSupport {
>>>>
>>>> ...
>>>> ...
>>>>
>>>> /**
>>>> * Returns a user from the database or a new user.
>>>> * @return SUCCESS or ERROR.
>>>> * @throws Exception if an error occurs.
>>>> */
>>>> @Transactional(readOnly = true, propagation =
>>>> Propagation.REQUIRED, rollbackFor = PersistenceException.class)
>>>> public String find() {
>>>> if (user != null && user.getId() != null) {
>>>> user = userDAO.find(user.getId());
>>>> return SUCCESS;
>>>> }
>>>> user = new User();
>>>> return SUCCESS;
>>>> }
>>>>
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
>>> For additional commands, e-mail: user-help@struts.apache.org
>>>
>>
>>
>
>
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Re: NoSuchMethodException: $Proxy18.find()
Posted by ab...@br.ibm.com.
Another way to grant this to work is make the Action implement an
interface that has the desired method. So,
... create an interface ...
interface I1 {
String find();
}
... in your Action class declaration ...
class MyStrutsAction implements I1 extends ActionSupport {
...
}
WHY THIS SOLUTION SHOULD WORK:
This $Proxy? class that you mention is a Proxy. Proxies are cute little
classes generated at runtime, that are NOT subclasses of your original
class, but implements ALL your class' interfaces. The Idea of proxies is
to intercept calls to your original class methods (in this case, your
Struts Action), and do something before or after the call (in this case,
open an Hibernate Transaction when you call it). This is the foundation of
the Spring AOP and transaction support.
See the following code snippet:
interface I1 {
String find();
}
...
class C1 implements I1{
String find () { ... }
String otherThing() { ... }
}
...
Object obj = new C1();
Object obj2 = Proxy.newProxyInstance(C1.class.getClassLoader(),
new Class[] { Foo.class },
handler);
// this is a method that returns
a proxied instance of C1
C1 var1 = (C1) obj; // WORKS; C1 is an instance of C1
var1 = (C1) obj2; //!!Don`t WORK!! ClassCastException, because obj2 is
a PROXY
// para C1, and not an instance of CLASS C1;
I1 var2 = (I1) obj; // WORKS, because the class implements the interface
I1;
I1 var2 = (I1) obj2; //WORKS, because obj2 is a proxy to C1, and
implements all C1 interfaces;
If I try to invoke in obj2, a proxied C1 instance, the method "otherThing"
by reflection, it won't work, because the "otherThing" is not implement in
an interface;
WHY THIS SOLUTION DOESN'T WORK WITH VANILLA SPRING 2:
I've published an issue in the Spring site for a problem that arises:
http://opensource.atlassian.com/projects/spring/browse/SPR-3126
I've patched my Spring 2 Framework installation and now I don't have this
problem anymore. [ Sorry, I didn't published the patch on the Spring site
because at the time I didn't know that Patches could be published :).
Anyway, for the bold of you the link above shows the exact solution that I
applied. ]
Basically, Spring is actually doing, in an oversimplified, pseudo java,
code, is this:
C1 obj1 = new C1();//where C1 is your action class...
Object obj2 = Proxy.newProxyInstance(C1.class.getClassLoader(),
new Class[] { Foo.class },
handler); //that returns de
$Proxy??? class; that's what proxies do; they return a class that
//implement all of the objects interfaces;
Method m = obj2.getClass().getMethod("find"); //a method from the
$Proxy??? class;
obj1.getClass().invoke(m, ...) ; //boom! the method doesn't belong to C1,
but to the $Proxy???;
Adam Ruggles <a....@gmail.com> wrote on 06/03/2007 00:22:32:
> I found the solution to this and I wanted to post it on the list.
>
> adding proxy-target-class="true" fixes it.
>
> <tx:annotation-driven transaction-manager="transactionManager"
> proxy-target-class="true" />
>
> Adam Ruggles wrote:
> > Creating a service object seems to have worked. Now I'm going to have
> > to re-think using action support. This project is not complicated
> > enough to warrant another layer.
> >
> > Thanks for your help.
> >
> > Paul Benedict wrote:
> >> Adam,
> >>
> >> I have never seen anyone attach Spring transactional logic to an
> >> action, and called DAOs straight from the action. That's not good
> >> practice, because it mashes web, business, and data layers all in one
> >> place.
> >>
> >> I wouldn't blame struts here (yet). I'd first move your code into a
> >> service object and then inject the service into the action. If there
> >> really is a problem with Struts, then the problem will persist (pun
> >> intended); but when you move them to the service layer, it will
> >> indicate whether you have mis-configured Spring or if Struts is at
> >> fault.
> >>
> >> Paul
> >>
> >> Adam Ruggles wrote:
> >>> I am following the guide here
> >>> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
> >>>
> >>> For some reason when trying to map a method other than execute I
> >>> recieve the following error:
> >>> - Servlet.service() for servlet default threw exception
> >>> java.lang.NoSuchMethodException: $Proxy18.find()
> >>>
> >>> Below are the configuration files and a segment of the UserAction
> >>> class.
> >>>
> >>> struts.xml:
> >>> <?xml version="1.0" encoding="UTF-8"?>
> >>> <!DOCTYPE struts PUBLIC
> >>> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
> >>> "http://struts.apache.org/dtds/struts-2.0.dtd">
> >>> <struts>
> >>> <constant name="struts.objectFactory" value="spring" />
> >>> <!-- <constant name="struts.devMode" value="true" /> -->
> >>> <include file="struts-default.xml"/>
> >>> <package name="havoc" extends="struts-default">
> >>> <action name="list" class="userAction" method="execute">
> >>> <result name="success">/WEB-INF/pages/list.jsp</result>
> >>> </action>
> >>> <action name="save" class="userAction" method="save">
> >>> <result name="success"
type="redirect">/list.action</result>
> >>> </action>
> >>> <action name="find" class="userAction" method="find">
> >>> <result name="success">/WEB-INF/pages/index.jsp</result>
> >>> </action>
> >>> </package>
> >>> </struts>
> >>>
> >>> Application Context
> >>> <?xml version="1.0" encoding="UTF-8"?>
> >>> <beans default-autowire="byName"
> >>> xmlns="http://www.springframework.org/schema/beans"
> >>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> >>> xmlns:aop="http://www.springframework.org/schema/aop"
> >>> xmlns:tx="http://www.springframework.org/schema/tx"
> >>>
> >>> xsi:schemaLocation="http://www.springframework.org/schema/beans
> >>> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
> >>> http://www.springframework.org/schema/aop
> >>> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
> >>> http://www.springframework.org/schema/tx
> >>> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
> >>>
> >>> <bean id="propertyConfigurer"
> >>> class="org.springframework.beans.factory.config.
> PropertyPlaceholderConfigurer"
> >>> autowire="no">
> >>> <property name="location" value="/WEB-INF/havoc.properties"/>
> >>> </bean>
> >>>
> >>> <bean id="config" class="com.havoc.forum.util.Config"
autowire="no">
> >>> <property name="location" value="/WEB-INF/havoc.properties"/>
> >>> </bean>
> >>> <bean id="dataSource"
> >>> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
> >>> <property name="driverClassName"
> >>> value="${jdbc.driverClassName}"/>
> >>> <property name="url" value="${jdbc.url}"/>
> >>> <property name="username" value="${jdbc.username}"/>
> >>> <property name="password" value="${jdbc.password}"/>
> >>> </bean>
> >>> <bean id="sessionFactory"
> >>> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
> >>> <property name="dataSource" ref="dataSource"/>
> >>> <!-- This will cause spring to return the raw
> SessionFactory
>>> instead of the spring proxied one. -->
> >>> <!-- <property name="exposeTransactionAwareSessionFactory"
>
>>> value="false" /> -->
> >>> <property name="configurationClass"
> >>> value="org.hibernate.cfg.AnnotationConfiguration"/>
> >>> <property name="configLocation"
> >>> value="classpath:hibernate.cfg.xml"/> <property
> >>> name="hibernateProperties">
> >>> <props>
> >>> <prop
> >>> key="hibernate.dialect">${hibernate.dialect}</prop>
> >>> <prop
> >>> key="hibernate.cache.use_query_cache">${hibernate.cache.
> use_query_cache}</prop>
> >>>
> >>> <prop
> >>> key="hibernate.show_sql">${hibernate.show_sql}</prop>
> >>> <prop
> >>> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.
> bytecode.use_reflection_optimizer}</prop>
> >>>
> >>> <prop
> >>> key="hibernate.cache.use_second_level_cache">${hibernate.cache.
> use_second_level_cache}</prop>
> >>>
> >>> <prop
> >>> key="hibernate.cache.provider_class">${hibernate.cache.
> provider_class}</prop>
> >>>
> >>> <prop
> >>> key="hibernate.current_session_context_class">thread</prop>
> >>> <prop
> >>> key="hibernate.transaction.factory_class">org.hibernate.
> transaction.JDBCTransactionFactory</prop>
> >>>
> >>> </props>
> >>> </property> </bean>
> >>> <!--
>>> Instruct Spring to perform declarative
> transaction management
> >>> automatically
> >>> on annotated classes.
> >>> -->
> >>> <tx:annotation-driven transaction-manager="transactionManager" />
> >>> <!-- Transaction manager for a single Hibernate
>>>
> SessionFactory (alternative to JTA) -->
> >>> <bean id="transactionManager"
> >>>
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
> >>> <property name="sessionFactory"><ref
> >>> bean="sessionFactory"/></property>
> >>> </bean>
> >>>
> >>> <!-- Model Objects -->
> >>> <bean id="user" class="com.havoc.forum.model.User" />
> >>> <bean id="group" class="com.havoc.forum.model.Group" />
> >>> <bean id="rank" class="com.havoc.forum.model.Rank" />
> >>>
> >>> <!-- Data Access Objects -->
> >>> <bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO"
/>
> >>> <bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO"
/>
> >>> <bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO"
/>
> >>> <!-- Actions -->
> >>> <bean id="userAction" class="com.havoc.forum.action.UserAction"
> >>> scope="prototype" />
> >>> </beans>
> >>>
> >>> UserAction
> >>>
> >>> public class UserAction extends ActionSupport {
> >>>
> >>> ...
> >>> ...
> >>>
> >>> /**
> >>> * Returns a user from the database or a new user.
> >>> * @return SUCCESS or ERROR.
> >>> * @throws Exception if an error occurs.
> >>> */
> >>> @Transactional(readOnly = true, propagation =
> >>> Propagation.REQUIRED, rollbackFor = PersistenceException.class)
> >>> public String find() {
> >>> if (user != null && user.getId() != null) {
> >>> user = userDAO.find(user.getId());
> >>> return SUCCESS;
> >>> }
> >>> user = new User();
> >>> return SUCCESS;
> >>> }
> >>>
> >>>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
> >> For additional commands, e-mail: user-help@struts.apache.org
> >>
> >
> >
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
> For additional commands, e-mail: user-help@struts.apache.org
>
Re: NoSuchMethodException: $Proxy18.find()
Posted by Adam Ruggles <a....@gmail.com>.
I found the solution to this and I wanted to post it on the list.
adding proxy-target-class="true" fixes it.
<tx:annotation-driven transaction-manager="transactionManager"
proxy-target-class="true" />
Adam Ruggles wrote:
> Creating a service object seems to have worked. Now I'm going to have
> to re-think using action support. This project is not complicated
> enough to warrant another layer.
>
> Thanks for your help.
>
> Paul Benedict wrote:
>> Adam,
>>
>> I have never seen anyone attach Spring transactional logic to an
>> action, and called DAOs straight from the action. That's not good
>> practice, because it mashes web, business, and data layers all in one
>> place.
>>
>> I wouldn't blame struts here (yet). I'd first move your code into a
>> service object and then inject the service into the action. If there
>> really is a problem with Struts, then the problem will persist (pun
>> intended); but when you move them to the service layer, it will
>> indicate whether you have mis-configured Spring or if Struts is at
>> fault.
>>
>> Paul
>>
>> Adam Ruggles wrote:
>>> I am following the guide here
>>> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
>>>
>>> For some reason when trying to map a method other than execute I
>>> recieve the following error:
>>> - Servlet.service() for servlet default threw exception
>>> java.lang.NoSuchMethodException: $Proxy18.find()
>>>
>>> Below are the configuration files and a segment of the UserAction
>>> class.
>>>
>>> struts.xml:
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <!DOCTYPE struts PUBLIC
>>> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
>>> "http://struts.apache.org/dtds/struts-2.0.dtd">
>>> <struts>
>>> <constant name="struts.objectFactory" value="spring" />
>>> <!-- <constant name="struts.devMode" value="true" /> -->
>>> <include file="struts-default.xml"/>
>>> <package name="havoc" extends="struts-default">
>>> <action name="list" class="userAction" method="execute">
>>> <result name="success">/WEB-INF/pages/list.jsp</result>
>>> </action>
>>> <action name="save" class="userAction" method="save">
>>> <result name="success" type="redirect">/list.action</result>
>>> </action>
>>> <action name="find" class="userAction" method="find">
>>> <result name="success">/WEB-INF/pages/index.jsp</result>
>>> </action>
>>> </package>
>>> </struts>
>>>
>>> Application Context
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <beans default-autowire="byName"
>>> xmlns="http://www.springframework.org/schema/beans"
>>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>>> xmlns:aop="http://www.springframework.org/schema/aop"
>>> xmlns:tx="http://www.springframework.org/schema/tx"
>>>
>>> xsi:schemaLocation="http://www.springframework.org/schema/beans
>>> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
>>> http://www.springframework.org/schema/aop
>>> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
>>> http://www.springframework.org/schema/tx
>>> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
>>>
>>> <bean id="propertyConfigurer"
>>> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
>>> autowire="no">
>>> <property name="location" value="/WEB-INF/havoc.properties"/>
>>> </bean>
>>>
>>> <bean id="config" class="com.havoc.forum.util.Config" autowire="no">
>>> <property name="location" value="/WEB-INF/havoc.properties"/>
>>> </bean>
>>> <bean id="dataSource"
>>> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
>>> <property name="driverClassName"
>>> value="${jdbc.driverClassName}"/>
>>> <property name="url" value="${jdbc.url}"/>
>>> <property name="username" value="${jdbc.username}"/>
>>> <property name="password" value="${jdbc.password}"/>
>>> </bean>
>>> <bean id="sessionFactory"
>>> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
>>> <property name="dataSource" ref="dataSource"/>
>>> <!-- This will cause spring to return the raw SessionFactory
>>> instead of the spring proxied one. -->
>>> <!-- <property name="exposeTransactionAwareSessionFactory"
>>> value="false" /> -->
>>> <property name="configurationClass"
>>> value="org.hibernate.cfg.AnnotationConfiguration"/>
>>> <property name="configLocation"
>>> value="classpath:hibernate.cfg.xml"/> <property
>>> name="hibernateProperties">
>>> <props>
>>> <prop
>>> key="hibernate.dialect">${hibernate.dialect}</prop>
>>> <prop
>>> key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>>>
>>> <prop
>>> key="hibernate.show_sql">${hibernate.show_sql}</prop>
>>> <prop
>>> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>>>
>>> <prop
>>> key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>>>
>>> <prop
>>> key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>>>
>>> <prop
>>> key="hibernate.current_session_context_class">thread</prop>
>>> <prop
>>> key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>>>
>>> </props>
>>> </property> </bean>
>>> <!--
>>> Instruct Spring to perform declarative transaction management
>>> automatically
>>> on annotated classes.
>>> -->
>>> <tx:annotation-driven transaction-manager="transactionManager" />
>>> <!-- Transaction manager for a single Hibernate
>>> SessionFactory (alternative to JTA) -->
>>> <bean id="transactionManager"
>>> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
>>> <property name="sessionFactory"><ref
>>> bean="sessionFactory"/></property>
>>> </bean>
>>>
>>> <!-- Model Objects -->
>>> <bean id="user" class="com.havoc.forum.model.User" />
>>> <bean id="group" class="com.havoc.forum.model.Group" />
>>> <bean id="rank" class="com.havoc.forum.model.Rank" />
>>>
>>> <!-- Data Access Objects -->
>>> <bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO" />
>>> <bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO" />
>>> <bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO" />
>>> <!-- Actions -->
>>> <bean id="userAction" class="com.havoc.forum.action.UserAction"
>>> scope="prototype" />
>>> </beans>
>>>
>>> UserAction
>>>
>>> public class UserAction extends ActionSupport {
>>>
>>> ...
>>> ...
>>>
>>> /**
>>> * Returns a user from the database or a new user.
>>> * @return SUCCESS or ERROR.
>>> * @throws Exception if an error occurs.
>>> */
>>> @Transactional(readOnly = true, propagation =
>>> Propagation.REQUIRED, rollbackFor = PersistenceException.class)
>>> public String find() {
>>> if (user != null && user.getId() != null) {
>>> user = userDAO.find(user.getId());
>>> return SUCCESS;
>>> }
>>> user = new User();
>>> return SUCCESS;
>>> }
>>>
>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
>> For additional commands, e-mail: user-help@struts.apache.org
>>
>
>
---------------------------------------------------------------------
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Re: NoSuchMethodException: $Proxy18.find()
Posted by Adam Ruggles <a....@gmail.com>.
Creating a service object seems to have worked. Now I'm going to have
to re-think using action support. This project is not complicated
enough to warrant another layer.
Thanks for your help.
Paul Benedict wrote:
> Adam,
>
> I have never seen anyone attach Spring transactional logic to an
> action, and called DAOs straight from the action. That's not good
> practice, because it mashes web, business, and data layers all in one
> place.
>
> I wouldn't blame struts here (yet). I'd first move your code into a
> service object and then inject the service into the action. If there
> really is a problem with Struts, then the problem will persist (pun
> intended); but when you move them to the service layer, it will
> indicate whether you have mis-configured Spring or if Struts is at fault.
>
> Paul
>
> Adam Ruggles wrote:
>> I am following the guide here
>> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
>>
>> For some reason when trying to map a method other than execute I
>> recieve the following error:
>> - Servlet.service() for servlet default threw exception
>> java.lang.NoSuchMethodException: $Proxy18.find()
>>
>> Below are the configuration files and a segment of the UserAction class.
>>
>> struts.xml:
>> <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE struts PUBLIC
>> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
>> "http://struts.apache.org/dtds/struts-2.0.dtd">
>> <struts>
>> <constant name="struts.objectFactory" value="spring" />
>> <!-- <constant name="struts.devMode" value="true" /> -->
>> <include file="struts-default.xml"/>
>> <package name="havoc" extends="struts-default">
>> <action name="list" class="userAction" method="execute">
>> <result name="success">/WEB-INF/pages/list.jsp</result>
>> </action>
>> <action name="save" class="userAction" method="save">
>> <result name="success" type="redirect">/list.action</result>
>> </action>
>> <action name="find" class="userAction" method="find">
>> <result name="success">/WEB-INF/pages/index.jsp</result>
>> </action>
>> </package>
>> </struts>
>>
>> Application Context
>> <?xml version="1.0" encoding="UTF-8"?>
>> <beans default-autowire="byName"
>> xmlns="http://www.springframework.org/schema/beans"
>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>> xmlns:aop="http://www.springframework.org/schema/aop"
>> xmlns:tx="http://www.springframework.org/schema/tx"
>> xsi:schemaLocation="http://www.springframework.org/schema/beans
>> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
>> http://www.springframework.org/schema/aop
>> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
>> http://www.springframework.org/schema/tx
>> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
>>
>> <bean id="propertyConfigurer"
>> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
>> autowire="no">
>> <property name="location" value="/WEB-INF/havoc.properties"/>
>> </bean>
>>
>> <bean id="config" class="com.havoc.forum.util.Config" autowire="no">
>> <property name="location" value="/WEB-INF/havoc.properties"/>
>> </bean>
>> <bean id="dataSource"
>> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
>> <property name="driverClassName" value="${jdbc.driverClassName}"/>
>> <property name="url" value="${jdbc.url}"/>
>> <property name="username" value="${jdbc.username}"/>
>> <property name="password" value="${jdbc.password}"/>
>> </bean>
>> <bean id="sessionFactory"
>> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
>> <property name="dataSource" ref="dataSource"/>
>> <!-- This will cause spring to return the raw SessionFactory
>> instead of the spring proxied one. -->
>> <!-- <property name="exposeTransactionAwareSessionFactory"
>> value="false" /> -->
>> <property name="configurationClass"
>> value="org.hibernate.cfg.AnnotationConfiguration"/>
>> <property name="configLocation"
>> value="classpath:hibernate.cfg.xml"/> <property
>> name="hibernateProperties">
>> <props>
>> <prop
>> key="hibernate.dialect">${hibernate.dialect}</prop>
>> <prop
>> key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>>
>> <prop
>> key="hibernate.show_sql">${hibernate.show_sql}</prop>
>> <prop
>> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>>
>> <prop
>> key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>>
>> <prop
>> key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>>
>> <prop
>> key="hibernate.current_session_context_class">thread</prop>
>> <prop
>> key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>>
>> </props>
>> </property> </bean>
>> <!--
>> Instruct Spring to perform declarative transaction management
>> automatically
>> on annotated classes.
>> -->
>> <tx:annotation-driven transaction-manager="transactionManager" />
>> <!-- Transaction manager for a single Hibernate SessionFactory
>> (alternative to JTA) -->
>> <bean id="transactionManager"
>> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
>> <property name="sessionFactory"><ref
>> bean="sessionFactory"/></property>
>> </bean>
>>
>> <!-- Model Objects -->
>> <bean id="user" class="com.havoc.forum.model.User" />
>> <bean id="group" class="com.havoc.forum.model.Group" />
>> <bean id="rank" class="com.havoc.forum.model.Rank" />
>>
>> <!-- Data Access Objects -->
>> <bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO" />
>> <bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO" />
>> <bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO" />
>> <!-- Actions -->
>> <bean id="userAction" class="com.havoc.forum.action.UserAction"
>> scope="prototype" />
>> </beans>
>>
>> UserAction
>>
>> public class UserAction extends ActionSupport {
>>
>> ...
>> ...
>>
>> /**
>> * Returns a user from the database or a new user.
>> * @return SUCCESS or ERROR.
>> * @throws Exception if an error occurs.
>> */
>> @Transactional(readOnly = true, propagation =
>> Propagation.REQUIRED, rollbackFor = PersistenceException.class)
>> public String find() {
>> if (user != null && user.getId() != null) {
>> user = userDAO.find(user.getId());
>> return SUCCESS;
>> }
>> user = new User();
>> return SUCCESS;
>> }
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
> For additional commands, e-mail: user-help@struts.apache.org
>
---------------------------------------------------------------------
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[OT] Re: NoSuchMethodException: $Proxy18.find()
Posted by Dave Newton <ne...@yahoo.com>.
--- Paul Benedict <pb...@apache.org> wrote:
> I have never seen anyone attach Spring transactional
> logic to an action, and called DAOs straight from
the
> action. That's not good practice, because it mashes
> web, business, and data layers all in one place.
Here's my question/comment: to me it seems that the
only reason an "Action" would be considered part of
the web layer is that S2 maps the names of Actions to
URLs and can process the named result types in a webby
way.
But that's really not related to the Actions
themselves--to me this distinction seems the point of
XWork/the "Command Pattern".
The fact that I can test my Actions in complete
isolation only makes me believe that even
more--because my test framework is blissfully unaware
that it's testing what are, ultimately, URLs.
So... while I agree that things should be broken up
into fairly granular units of responsibility, I guess
I wonder if it's really fair to call Actions part of
the web layer anymore, when really they're just being
used by (what I consider to be) the *real* web layer?
d.
____________________________________________________________________________________
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Re: NoSuchMethodException: $Proxy18.find()
Posted by Paul Benedict <pb...@apache.org>.
Adam,
I have never seen anyone attach Spring transactional logic to an action,
and called DAOs straight from the action. That's not good practice,
because it mashes web, business, and data layers all in one place.
I wouldn't blame struts here (yet). I'd first move your code into a
service object and then inject the service into the action. If there
really is a problem with Struts, then the problem will persist (pun
intended); but when you move them to the service layer, it will indicate
whether you have mis-configured Spring or if Struts is at fault.
Paul
Adam Ruggles wrote:
> I am following the guide here
> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
>
> For some reason when trying to map a method other than execute I recieve
> the following error:
> - Servlet.service() for servlet default threw exception
> java.lang.NoSuchMethodException: $Proxy18.find()
>
> Below are the configuration files and a segment of the UserAction class.
>
> struts.xml:
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE struts PUBLIC
> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
> "http://struts.apache.org/dtds/struts-2.0.dtd">
> <struts>
> <constant name="struts.objectFactory" value="spring" />
> <!-- <constant name="struts.devMode" value="true" /> -->
> <include file="struts-default.xml"/>
> <package name="havoc" extends="struts-default">
> <action name="list" class="userAction" method="execute">
> <result name="success">/WEB-INF/pages/list.jsp</result>
> </action>
> <action name="save" class="userAction" method="save">
> <result name="success" type="redirect">/list.action</result>
> </action>
> <action name="find" class="userAction" method="find">
> <result name="success">/WEB-INF/pages/index.jsp</result>
> </action>
> </package>
> </struts>
>
> Application Context
> <?xml version="1.0" encoding="UTF-8"?>
> <beans default-autowire="byName"
> xmlns="http://www.springframework.org/schema/beans"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:aop="http://www.springframework.org/schema/aop"
> xmlns:tx="http://www.springframework.org/schema/tx"
> xsi:schemaLocation="http://www.springframework.org/schema/beans
> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
> http://www.springframework.org/schema/aop
> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
> http://www.springframework.org/schema/tx
> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
>
> <bean id="propertyConfigurer"
> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
> autowire="no">
> <property name="location" value="/WEB-INF/havoc.properties"/>
> </bean>
>
> <bean id="config" class="com.havoc.forum.util.Config" autowire="no">
> <property name="location" value="/WEB-INF/havoc.properties"/>
> </bean>
> <bean id="dataSource"
> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
> <property name="driverClassName" value="${jdbc.driverClassName}"/>
> <property name="url" value="${jdbc.url}"/>
> <property name="username" value="${jdbc.username}"/>
> <property name="password" value="${jdbc.password}"/>
> </bean>
> <bean id="sessionFactory"
> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
> <property name="dataSource" ref="dataSource"/>
> <!-- This will cause spring to return the raw SessionFactory
> instead of the spring proxied one. -->
> <!-- <property name="exposeTransactionAwareSessionFactory"
> value="false" /> -->
> <property name="configurationClass"
> value="org.hibernate.cfg.AnnotationConfiguration"/>
> <property name="configLocation"
> value="classpath:hibernate.cfg.xml"/> <property
> name="hibernateProperties">
> <props>
> <prop
> key="hibernate.dialect">${hibernate.dialect}</prop>
> <prop
> key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>
> <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
> <prop
> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>
> <prop
> key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>
> <prop
> key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>
> <prop
> key="hibernate.current_session_context_class">thread</prop>
> <prop
> key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>
> </props>
> </property> </bean>
> <!--
> Instruct Spring to perform declarative transaction management
> automatically
> on annotated classes.
> -->
> <tx:annotation-driven transaction-manager="transactionManager" />
> <!-- Transaction manager for a single Hibernate SessionFactory
> (alternative to JTA) -->
> <bean id="transactionManager"
> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
> <property name="sessionFactory"><ref
> bean="sessionFactory"/></property>
> </bean>
>
> <!-- Model Objects -->
> <bean id="user" class="com.havoc.forum.model.User" />
> <bean id="group" class="com.havoc.forum.model.Group" />
> <bean id="rank" class="com.havoc.forum.model.Rank" />
>
> <!-- Data Access Objects -->
> <bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO" />
> <bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO" />
> <bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO" />
> <!-- Actions -->
> <bean id="userAction" class="com.havoc.forum.action.UserAction"
> scope="prototype" />
> </beans>
>
> UserAction
>
> public class UserAction extends ActionSupport {
>
> ...
> ...
>
> /**
> * Returns a user from the database or a new user.
> * @return SUCCESS or ERROR.
> * @throws Exception if an error occurs.
> */
> @Transactional(readOnly = true, propagation = Propagation.REQUIRED,
> rollbackFor = PersistenceException.class)
> public String find() {
> if (user != null && user.getId() != null) {
> user = userDAO.find(user.getId());
> return SUCCESS;
> }
> user = new User();
> return SUCCESS;
> }
>
>
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Re: NoSuchMethodException: $Proxy18.find()
Posted by Adam Ruggles <a....@gmail.com>.
Yes, I tried both methods. For whatever reason when I extend
ActionSupport it no longer works.
Dave Newton wrote:
> Does it do the same thing if you don't explicitly
> declare the bean (put the classname directly in the
> struts.xml file)?
>
> Just curious... I don't have direct experience with
> what you're doing.
>
> --- Adam Ruggles <a....@gmail.com> wrote:
>
>
>> Ok I think I found the problem. If I remove the
>> "extends ActionSupport"
>> it works without any problems. I know "extends
>> ActionSupport" works
>> with Webwork 2, is this a bug or a change in
>> implementation?
>>
>> Adam Ruggles wrote:
>>
>>> I am following the guide here
>>>
>>>
> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
>
>>> For some reason when trying to map a method other
>>>
>> than execute I
>>
>>> recieve the following error:
>>> - Servlet.service() for servlet default threw
>>>
>> exception
>>
>>> java.lang.NoSuchMethodException: $Proxy18.find()
>>>
>>> Below are the configuration files and a segment of
>>>
>> the UserAction class.
>>
>>> struts.xml:
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <!DOCTYPE struts PUBLIC
>>> "-//Apache Software Foundation//DTD Struts
>>>
>> Configuration 2.0//EN"
>>
>>> "http://struts.apache.org/dtds/struts-2.0.dtd">
>>> <struts>
>>> <constant name="struts.objectFactory"
>>>
>> value="spring" />
>>
>>> <!-- <constant name="struts.devMode"
>>>
>> value="true" /> -->
>>
>>> <include file="struts-default.xml"/>
>>> <package name="havoc"
>>>
>> extends="struts-default">
>>
>>> <action name="list" class="userAction"
>>>
>> method="execute">
>>
>>> <result
>>>
>> name="success">/WEB-INF/pages/list.jsp</result>
>>
>>> </action>
>>> <action name="save" class="userAction"
>>>
>> method="save">
>>
>>> <result name="success"
>>>
>> type="redirect">/list.action</result>
>>
>>> </action>
>>> <action name="find" class="userAction"
>>>
>> method="find">
>>
>>> <result
>>>
>> name="success">/WEB-INF/pages/index.jsp</result>
>>
>>> </action>
>>> </package>
>>> </struts>
>>>
>>> Application Context
>>> <?xml version="1.0" encoding="UTF-8"?>
>>> <beans default-autowire="byName"
>>>
>>>
>> xmlns="http://www.springframework.org/schema/beans"
>>
>>>
>>>
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>
>>>
>>>
> xmlns:aop="http://www.springframework.org/schema/aop"
>
>>>
>>>
>> xmlns:tx="http://www.springframework.org/schema/tx"
>>
>>>
>>>
> xsi:schemaLocation="http://www.springframework.org/schema/beans
>
> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
>
>>>
>>>
>> http://www.springframework.org/schema/aop
>>
> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
>
>>>
>>>
>> http://www.springframework.org/schema/tx
>>
> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
>
>>> <bean id="propertyConfigurer"
>>>
>>>
> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
>
>>> autowire="no">
>>> <property name="location"
>>>
>> value="/WEB-INF/havoc.properties"/>
>>
>>> </bean>
>>>
>>> <bean id="config"
>>>
>> class="com.havoc.forum.util.Config" autowire="no">
>>
>>> <property name="location"
>>>
>> value="/WEB-INF/havoc.properties"/>
>>
>>> </bean>
>>> <bean id="dataSource"
>>>
>>>
> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
>
>>> <property name="driverClassName"
>>>
>> value="${jdbc.driverClassName}"/>
>>
>>> <property name="url" value="${jdbc.url}"/>
>>> <property name="username"
>>>
>> value="${jdbc.username}"/>
>>
>>> <property name="password"
>>>
>> value="${jdbc.password}"/>
>>
>>> </bean>
>>> <bean id="sessionFactory"
>>>
>>>
> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
>
>>> <property name="dataSource"
>>>
>> ref="dataSource"/>
>>
>>> <!-- This will cause spring to return the
>>>
>> raw SessionFactory
>>
>>> instead of the spring proxied one. -->
>>> <!-- <property
>>>
>> name="exposeTransactionAwareSessionFactory"
>>
>>> value="false" /> -->
>>> <property name="configurationClass"
>>>
>>>
>> value="org.hibernate.cfg.AnnotationConfiguration"/>
>>
>>> <property name="configLocation"
>>> value="classpath:hibernate.cfg.xml"/>
>>>
>> <property
>>
>>> name="hibernateProperties">
>>> <props>
>>> <prop
>>>
>>>
>> key="hibernate.dialect">${hibernate.dialect}</prop>
>>
>>
>>> <prop
>>>
>>>
> key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>
>>> <prop
>>>
> key="hibernate.show_sql">${hibernate.show_sql}</prop>
>
>>> <prop
>>>
>>>
> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>
>>> <prop
>>>
>>>
> key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>
>>> <prop
>>>
>>>
> key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>
>>> <prop
>>>
>>>
> key="hibernate.current_session_context_class">thread</prop>
>
>>> <prop
>>>
>>>
> key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>
>>> </props>
>>> </property> </bean>
>>> <!--
>>> Instruct Spring to perform declarative
>>>
>> transaction management
>>
>>> automatically
>>> on annotated classes.
>>> -->
>>> <tx:annotation-driven
>>>
>> transaction-manager="transactionManager" />
>>
>>> <!-- Transaction manager for a single
>>>
>> Hibernate SessionFactory
>>
>>> (alternative to JTA) -->
>>> <bean id="transactionManager"
>>>
>>>
> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
>
>>> <property name="sessionFactory"><ref
>>> bean="sessionFactory"/></property>
>>> </bean>
>>>
>>> <!-- Model Objects -->
>>> <bean id="user"
>>>
>> class="com.havoc.forum.model.User" />
>>
>>> <bean id="group"
>>>
>> class="com.havoc.forum.model.Group" />
>>
>>> <bean id="rank"
>>>
>> class="com.havoc.forum.model.Rank" />
>>
>>> <!-- Data Access Objects -->
>>> <bean id="userDAO"
>>>
>> class="com.havoc.forum.dao.hibernate.UserDAO" />
>>
>>> <bean id="groupDAO"
>>>
>> class="com.havoc.forum.dao.hibernate.GroupDAO" />
>>
>>> <bean id="rankDAO"
>>>
>> class="com.havoc.forum.dao.hibernate.RankDAO" />
>>
>>> <!-- Actions -->
>>> <bean id="userAction"
>>>
>> class="com.havoc.forum.action.UserAction"
>>
>>> scope="prototype" />
>>> </beans>
>>>
>>> UserAction
>>>
>>> public class UserAction extends ActionSupport {
>>>
> === message truncated ===
>
>
>
>
> ____________________________________________________________________________________
> We won't tell. Get more on shows you hate to love
> (and love to hate): Yahoo! TV's Guilty Pleasures list.
> http://tv.yahoo.com/collections/265
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@struts.apache.org
> For additional commands, e-mail: user-help@struts.apache.org
>
>
Re: NoSuchMethodException: $Proxy18.find()
Posted by Dave Newton <ne...@yahoo.com>.
Does it do the same thing if you don't explicitly
declare the bean (put the classname directly in the
struts.xml file)?
Just curious... I don't have direct experience with
what you're doing.
--- Adam Ruggles <a....@gmail.com> wrote:
> Ok I think I found the problem. If I remove the
> "extends ActionSupport"
> it works without any problems. I know "extends
> ActionSupport" works
> with Webwork 2, is this a bug or a change in
> implementation?
>
> Adam Ruggles wrote:
> > I am following the guide here
> >
>
http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
> >
> > For some reason when trying to map a method other
> than execute I
> > recieve the following error:
> > - Servlet.service() for servlet default threw
> exception
> > java.lang.NoSuchMethodException: $Proxy18.find()
> >
> > Below are the configuration files and a segment of
> the UserAction class.
> >
> > struts.xml:
> > <?xml version="1.0" encoding="UTF-8"?>
> > <!DOCTYPE struts PUBLIC
> > "-//Apache Software Foundation//DTD Struts
> Configuration 2.0//EN"
> > "http://struts.apache.org/dtds/struts-2.0.dtd">
> > <struts>
> > <constant name="struts.objectFactory"
> value="spring" />
> > <!-- <constant name="struts.devMode"
> value="true" /> -->
> > <include file="struts-default.xml"/>
> > <package name="havoc"
> extends="struts-default">
> > <action name="list" class="userAction"
> method="execute">
> > <result
> name="success">/WEB-INF/pages/list.jsp</result>
> > </action>
> > <action name="save" class="userAction"
> method="save">
> > <result name="success"
> type="redirect">/list.action</result>
> > </action>
> > <action name="find" class="userAction"
> method="find">
> > <result
> name="success">/WEB-INF/pages/index.jsp</result>
> > </action>
> > </package>
> > </struts>
> >
> > Application Context
> > <?xml version="1.0" encoding="UTF-8"?>
> > <beans default-autowire="byName"
> >
> xmlns="http://www.springframework.org/schema/beans"
> >
>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> >
>
xmlns:aop="http://www.springframework.org/schema/aop"
> >
> xmlns:tx="http://www.springframework.org/schema/tx"
> >
>
xsi:schemaLocation="http://www.springframework.org/schema/beans
>
> >
>
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
> >
> http://www.springframework.org/schema/aop
> >
>
http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
> >
> http://www.springframework.org/schema/tx
> >
>
http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
> >
> > <bean id="propertyConfigurer"
> >
>
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
>
> > autowire="no">
> > <property name="location"
> value="/WEB-INF/havoc.properties"/>
> > </bean>
> >
> > <bean id="config"
> class="com.havoc.forum.util.Config" autowire="no">
> > <property name="location"
> value="/WEB-INF/havoc.properties"/>
> > </bean>
> > <bean id="dataSource"
> >
>
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
> > <property name="driverClassName"
> value="${jdbc.driverClassName}"/>
> > <property name="url" value="${jdbc.url}"/>
> > <property name="username"
> value="${jdbc.username}"/>
> > <property name="password"
> value="${jdbc.password}"/>
> > </bean>
> > <bean id="sessionFactory"
> >
>
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
> > <property name="dataSource"
> ref="dataSource"/>
> > <!-- This will cause spring to return the
> raw SessionFactory
> > instead of the spring proxied one. -->
> > <!-- <property
> name="exposeTransactionAwareSessionFactory"
> > value="false" /> -->
> > <property name="configurationClass"
> >
> value="org.hibernate.cfg.AnnotationConfiguration"/>
> > <property name="configLocation"
> > value="classpath:hibernate.cfg.xml"/>
> <property
> > name="hibernateProperties">
> > <props>
> > <prop
> >
> key="hibernate.dialect">${hibernate.dialect}</prop>
>
> > <prop
> >
>
key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>
> >
> > <prop
>
key="hibernate.show_sql">${hibernate.show_sql}</prop>
> > <prop
> >
>
key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>
> >
> > <prop
> >
>
key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>
> >
> > <prop
> >
>
key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>
> >
> > <prop
> >
>
key="hibernate.current_session_context_class">thread</prop>
> > <prop
> >
>
key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>
> >
> > </props>
> > </property> </bean>
> > <!--
> > Instruct Spring to perform declarative
> transaction management
> > automatically
> > on annotated classes.
> > -->
> > <tx:annotation-driven
> transaction-manager="transactionManager" />
> > <!-- Transaction manager for a single
> Hibernate SessionFactory
> > (alternative to JTA) -->
> > <bean id="transactionManager"
> >
>
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
> > <property name="sessionFactory"><ref
> > bean="sessionFactory"/></property>
> > </bean>
> >
> > <!-- Model Objects -->
> > <bean id="user"
> class="com.havoc.forum.model.User" />
> > <bean id="group"
> class="com.havoc.forum.model.Group" />
> > <bean id="rank"
> class="com.havoc.forum.model.Rank" />
> >
> > <!-- Data Access Objects -->
> > <bean id="userDAO"
> class="com.havoc.forum.dao.hibernate.UserDAO" />
> > <bean id="groupDAO"
> class="com.havoc.forum.dao.hibernate.GroupDAO" />
> > <bean id="rankDAO"
> class="com.havoc.forum.dao.hibernate.RankDAO" />
> > <!-- Actions -->
> > <bean id="userAction"
> class="com.havoc.forum.action.UserAction"
> > scope="prototype" />
> > </beans>
> >
> > UserAction
> >
> > public class UserAction extends ActionSupport {
>
=== message truncated ===
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Re: NoSuchMethodException: $Proxy18.find()
Posted by Adam Ruggles <a....@gmail.com>.
Ok I think I found the problem. If I remove the "extends ActionSupport"
it works without any problems. I know "extends ActionSupport" works
with Webwork 2, is this a bug or a change in implementation?
Adam Ruggles wrote:
> I am following the guide here
> http://cwiki.apache.org/S2WIKI/struts-2-spring-2-jpa-ajax.html
>
> For some reason when trying to map a method other than execute I
> recieve the following error:
> - Servlet.service() for servlet default threw exception
> java.lang.NoSuchMethodException: $Proxy18.find()
>
> Below are the configuration files and a segment of the UserAction class.
>
> struts.xml:
> <?xml version="1.0" encoding="UTF-8"?>
> <!DOCTYPE struts PUBLIC
> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
> "http://struts.apache.org/dtds/struts-2.0.dtd">
> <struts>
> <constant name="struts.objectFactory" value="spring" />
> <!-- <constant name="struts.devMode" value="true" /> -->
> <include file="struts-default.xml"/>
> <package name="havoc" extends="struts-default">
> <action name="list" class="userAction" method="execute">
> <result name="success">/WEB-INF/pages/list.jsp</result>
> </action>
> <action name="save" class="userAction" method="save">
> <result name="success" type="redirect">/list.action</result>
> </action>
> <action name="find" class="userAction" method="find">
> <result name="success">/WEB-INF/pages/index.jsp</result>
> </action>
> </package>
> </struts>
>
> Application Context
> <?xml version="1.0" encoding="UTF-8"?>
> <beans default-autowire="byName"
> xmlns="http://www.springframework.org/schema/beans"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:aop="http://www.springframework.org/schema/aop"
> xmlns:tx="http://www.springframework.org/schema/tx"
> xsi:schemaLocation="http://www.springframework.org/schema/beans
> http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
> http://www.springframework.org/schema/aop
> http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
> http://www.springframework.org/schema/tx
> http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
>
> <bean id="propertyConfigurer"
> class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
> autowire="no">
> <property name="location" value="/WEB-INF/havoc.properties"/>
> </bean>
>
> <bean id="config" class="com.havoc.forum.util.Config" autowire="no">
> <property name="location" value="/WEB-INF/havoc.properties"/>
> </bean>
> <bean id="dataSource"
> class="org.springframework.jdbc.datasource.DriverManagerDataSource">
> <property name="driverClassName" value="${jdbc.driverClassName}"/>
> <property name="url" value="${jdbc.url}"/>
> <property name="username" value="${jdbc.username}"/>
> <property name="password" value="${jdbc.password}"/>
> </bean>
> <bean id="sessionFactory"
> class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
> <property name="dataSource" ref="dataSource"/>
> <!-- This will cause spring to return the raw SessionFactory
> instead of the spring proxied one. -->
> <!-- <property name="exposeTransactionAwareSessionFactory"
> value="false" /> -->
> <property name="configurationClass"
> value="org.hibernate.cfg.AnnotationConfiguration"/>
> <property name="configLocation"
> value="classpath:hibernate.cfg.xml"/> <property
> name="hibernateProperties">
> <props>
> <prop
> key="hibernate.dialect">${hibernate.dialect}</prop>
> <prop
> key="hibernate.cache.use_query_cache">${hibernate.cache.use_query_cache}</prop>
>
> <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
> <prop
> key="hibernate.bytecode.use_reflection_optimizer">${hibernate.bytecode.use_reflection_optimizer}</prop>
>
> <prop
> key="hibernate.cache.use_second_level_cache">${hibernate.cache.use_second_level_cache}</prop>
>
> <prop
> key="hibernate.cache.provider_class">${hibernate.cache.provider_class}</prop>
>
> <prop
> key="hibernate.current_session_context_class">thread</prop>
> <prop
> key="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</prop>
>
> </props>
> </property> </bean>
> <!--
> Instruct Spring to perform declarative transaction management
> automatically
> on annotated classes.
> -->
> <tx:annotation-driven transaction-manager="transactionManager" />
> <!-- Transaction manager for a single Hibernate SessionFactory
> (alternative to JTA) -->
> <bean id="transactionManager"
> class="org.springframework.orm.hibernate3.HibernateTransactionManager">
> <property name="sessionFactory"><ref
> bean="sessionFactory"/></property>
> </bean>
>
> <!-- Model Objects -->
> <bean id="user" class="com.havoc.forum.model.User" />
> <bean id="group" class="com.havoc.forum.model.Group" />
> <bean id="rank" class="com.havoc.forum.model.Rank" />
>
> <!-- Data Access Objects -->
> <bean id="userDAO" class="com.havoc.forum.dao.hibernate.UserDAO" />
> <bean id="groupDAO" class="com.havoc.forum.dao.hibernate.GroupDAO" />
> <bean id="rankDAO" class="com.havoc.forum.dao.hibernate.RankDAO" />
> <!-- Actions -->
> <bean id="userAction" class="com.havoc.forum.action.UserAction"
> scope="prototype" />
> </beans>
>
> UserAction
>
> public class UserAction extends ActionSupport {
>
> ...
> ...
>
> /**
> * Returns a user from the database or a new user.
> * @return SUCCESS or ERROR.
> * @throws Exception if an error occurs.
> */
> @Transactional(readOnly = true, propagation = Propagation.REQUIRED,
> rollbackFor = PersistenceException.class)
> public String find() {
> if (user != null && user.getId() != null) {
> user = userDAO.find(user.getId());
> return SUCCESS;
> }
> user = new User();
> return SUCCESS;
> }
>
>
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