Injecting mongodb DAO : bean not found

[jun.in.mess]

Hello,

I'm a total beginner to spring and IoC, and i got some difficulties to setup a Spring webapp.

I'm actually trying to implement a mongodb DAO, and inject it in a service layer trough annotation.
My DAO bean is not found by spring.

Here's some part of my code :


IUserDao.java

public interface IUserDao {
       //A Simple Interface, nothing special
}

UserDaoMongo.java

@Repository("UserDao")
public class UserDaoMongo implements IUserDao {
       //My own implementation of the DAO
}

IUserService.java

public interface IUserService {
	//Here again, a simple interface, nothing special
}

UserServiceImpl.java

@Service("UserService")
public class UserServiceImpl implements IUserService, UserDetailsService {
	
	@Autowired(required=true)
	@Qualifier("UserDao")
	private IUserDao userDao;

	//This one is the funny part. My UserService implement UserDetailsService, to be used with spring security.
	//I Thought it was the good place to that.
}

context-mongo.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:beans="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mongo="http://www.springframework.org/schema/data/mongo"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
		http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo-1.1.xsd">
	
	<mongo:mongo host="${mongo.address}" port="${mongo.port}" />
	<beans:bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
		<beans:constructor-arg ref="mongo" />
		<beans:constructor-arg name="databaseName" value="${mongo.database}" />
 	</beans:bean>

	<context:annotation-config />
</beans:beans>

And i got the following error :

 org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [my.package.dao.IUserDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value=UserDao)}

I already tried to add "<repositories base-package="" />" without success.
I tryed to googling my problem, but all solutions found wasn't really helpful. Or may i wasn't able to totally understand my mistake and wasn't able to know what to search exactly.

Also i don't know how to investigate further to understand this problem. I'm not only a beginer to Spring, but also to Java.

Thanks for any help.

[Oliver Gierke]

You don't have component scanning enabled. Use <context:component-scan /> over <context:annotation-config />.

[jun.in.mess]

Thanks for the tips, it work correctly now.

context-mongo.xml is imported in servlet-context.xml.
servlet-context.xml already call <context:component-scan /> with a correct base-package attribute. I thought it was enough. Obviously, it was not.