Struts2 Spring autowire =“ byType”

Question

I am using struts2 with spring. In my struts.properties file i have

struts.objectFactory = spring
struts.objectFactory.spring.autoWire = type

I have a class like

public class JdbcDaoSupportMyDao extends JdbcDaoSupport implements myjdbcDao 
{//......
 //......
}

I have an entry in my applicationContext.xml like

<bean id = "jdbcdaobeanentry" class="Spring_Ingrtn.JdbcDaoSupportMyDao">
        <property name="dataSource" ref="dataSource"></property>
</bean>

Now when i am having a setter/getter like

private myjdbcDao jdbcsup; 

public myjdbcDao getJdbcsup() {
  return jdbcsup;
}
public void setJdbcsup(myjdbcDao jdbcsup) {
  this.jdbcsup = jdbcsup;
}

It doesn't work ,it throws a NullPointerException

Why is this so, when i have mapped struts.objectFactory.spring.autoWire = type in my struts.properties file.

Shouldn't it map to my Interface (ie ) ?

Answer 1

change

struts.objectFactory.spring.autoWire = type

to

struts.objectFactory.spring.autoWire = auto

ie set the auto wire property to auto and let the container decide the best way to decide the wiring policy