Spring annotation @Inject doesn't work

Question

I have the code @Inject works in one class but not in other. Here's my code:

• context.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"

       xsi:schemaLocation=" http://www.springframework.org/schema/beans
                    http://www.springframework.org/schema/beans/spring-beans.xsd
                    http://www.springframework.org/schema/context
                    http://www.springframework.org/schema/context/spring-context.xsd
                    ">
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver"></bean>
    <context:component-scan base-package="com.myfashions.services"/>
    <context:component-scan base-package="com.myfashions.dao"/>
</beans>

• SellerRetriever.java

public class SellerRetriever {
    @Inject
    UserDAO userDAO;
    ...
    ...
}

UserDAO class is present in com.myfashions.dao package. @Inject is not working in Seller.java. Any reason why?

Answer 1

Make sure that both SellerRetriever and the implementation of UserDAO are annotated for the component scan. This will ensure that the latter is injected into the former:

@Service
public class SellerRetriever {
    @Inject
    UserDAO userDAO;
    ...
}

Annotate the UserDAO implementation with @Component.

When scanning multiple paths use:

<context:component-scan base-package="com.myfashions.services, com.myfashions.dao"/>