Seam Spring IllegalArgumentException

[mhiggins.matt.smartdestinations.com]

I have recently started a Seam project an integrated a legacy spring project in. Seam successfully starts the Spring container etc.. I see my bean definitions are loaded. For a simple test I wrote a an interface and iml

package com.smartdestinations.service;

public interface BeanOne {
     public String sayHello();
}

package com.smartdestinations.service.impl;

import com.smartdestinations.service.BeanOne;

public class BeanOneImpl implements BeanOne {
     
     public String sayHello(){ return "Hello"; }

}

I then defined this bean in my applicationContext


<bean id="beanToSeam"
    class="com.smartdestinations.service.impl.BeanOneImpl">
    <seam:component/>     
</bean>



Next I wrote a simple backing bean / component.
package com.vo.pt.session;

import java.util.List;

import org.jboss.seam.annotations.Create;
import org.jboss.seam.annotations.In;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.log.Log;

import com.smartdestinations.service.BeanOne;
import com.smartdestinations.service.impl.BeanOneImpl;

@Name("springTest")
public class SpringTest {
     
     @Logger Log log;
     @In("beanToSeam")
     public BeanOne beanToSeam;
     
     public void sayHello(){
          //uids = categoryService.findAllUids();
          log.info(beanToSeam.sayHello());
          
     }
}


I get the following exception when the page action is executed.

Caused by: java.lang.IllegalArgumentException: Could not set field value by reflection: SpringTest.beanToSeam on: com.vo.pt.session.SpringTest with value: class com.smartdestinations.service.impl.BeanOneImpl_$$_javassist_16
     at org.jboss.seam.util.Reflections.set(Reflections.java:79)
     at org.jboss.seam.Component.setFieldValue(Component.java:1788)
     ... 71 more
Caused by: java.lang.IllegalArgumentException
     at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:63)
     at java.lang.reflect.Field.set(Field.java:656)
     at org.jboss.seam.util.Reflections.set(Reflections.java:64)
     ... 72 more

[fastnsilver]

Try

@In("#{beanToSeam}")
 public BeanOne beanToSeam;

in your bean.

Make sure you have...

<application>

    <variable-resolver>

        org.springframework.web.jsf.DelegatingVariableResolver

    </variable-resolver>

</application>

in faces-config.xml.

See here for more details.

Cheers,
Chris.

[mhiggins.matt.smartdestinations.com]

hay Chris thanks for the response. I tried that with the same result. I have also checked out that chapter of the book and was using it as reference as well as this one http://www.manning.com/dallen/SeamIACH15_bonus.doc . One thing I did notice was the example in the seam distribution where using war deployments I am using an ear, could that be an issue ? I have all my spring services and seam components deployed to the jar right now i.e.

project.ear/
    project.jar/
           allMyClasses/
    project.war/

[gjeudy]

hey matt,

I'm using spring/seam integration in my project. You don't need:

<bean id="beanToSeam"
    class="com.smartdestinations.service.impl.BeanOneImpl">
    <seam:component/> 
</bean>

just put:

<bean id="beanToSeam"
    class="com.smartdestinations.service.impl.BeanOneImpl">
</bean>

then as Chris pointed out use:

@In("#{beanToSeam}")
 public BeanOne beanToSeam;

To inject your spring bean in your seam component. I never had to use seam:component so i'm not sure what you would benefit from it.

[mhiggins.matt.smartdestinations.com]

I am not sure if I will need it either but it did not appear to be much work and I could control the scope of the spring beans. Anyway I backed all that off and just used the EL resolver method and it was also a no go any other thoughts ?

[gjeudy]

Not sure at this point it should work. What is the stacktrace you are getting ? Can you also provide relevant config snippets?

Maybe your deployment packaging is causing the problem but I would have trouble believing this, where do your SpringTest seam component and BeanOneImpl spring bean reside ?

Both in the EAR lib ?

I would expect you bootstrap the spring container from your Seam components.xml right ?