@autowired pblm

[nidhin]

Hi
friends

i have a controller

@Controller

public class TestController {
    
    private final Registration registration;
    @Autowired()
    public TestController(Registration registration) {
        this.registration = registration;
    }

and registration interface

public interface Registration {
    
    public int register(String name, String password, String displayname, String email) throws DataAccessException;

and it is implimented in RegistrationImpl

and when i run the application i got following exception

org.springframework.beans.factory.UnsatisfiedDepen dencyException: Error creating bean with name 'testController' defined in ServletContext resource [/WEB-INF/image-servlet.xml]: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.springframework.samples.imagedb.Registration]: No unique bean of type [org.springframework.samples.imagedb.Registration] is defined: Unsatisfied dependency of type [interface org.springframework.samples.imagedb.Registration]: expected at least 1 matching bean
org.springframework.beans.factory.support.Construc torResolver.createArgumentArray(ConstructorResolve r.java:543)
org.springframework.beans.factory.support.Construc torResolver.autowireConstructor(ConstructorResolve r.java:178)
org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.autowireConstructor(Abs tractAutowireCapableBeanFactory.java:957)
org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.createBeanInstance(Abst ractAutowireCapableBeanFactory.java:869)
org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory.doCreateBean(AbstractAu towireCapableBeanFactory.java:514)
org.springframework.beans.factory.support.Abstract AutowireCapableBeanFactory$1.run(AbstractAutowireC apableBeanFactory.java:485)
java.security.AccessController.doPrivileged(Native Method)

what is my pblm plz help

adv thanks

[gehel]

It seems that you havent defined any bean of type Registration. Could you please post your appliationContext as well ?

[nidhin]

by using @autowired and @controller annotations i think that their is no need for configration

[Marten Deinum]

Just using @Autowired and @Controller isn't enough. You still need an implementation of your Registration interface and that implementation has to be marked with the @Component or @Service annotation.

How else should your application know what to inject, should it create an implementation of Register interface dynamically?

[nidhin]

ok thanks for your valuable post