Autowired - No qualifying bean of type found for dependency

Question

I ve started my project by creating entities  services and JUnit tests for services using Spring and Hibernate  All of this works great  Then I ve added spring-mvc to make this web application using many different step-by-step tutorials  but when I m trying to make Controller with  Autowired annotation  I m getting errors from Glassfish during deployment  I guess that for some reason Spring doesn t see my services  but after many attempts I still can t handle it   Tests for services with    RunWith SpringJUnit4ClassRunner class   ContextConfiguration locations     classpath  beans xml      and   Autowired MailManager mailManager    works properly   Controllers without  Autowired too  I can open my project in web browser without trouble    src main resources beans xml   lt  xml version  1 0  encoding  UTF-8   gt    lt beans xmlns  http   www springframework org schema beans         xmlns xsi  http   www w3 org 2001 XMLSchema-instance  xmlns aop  http   www springframework org schema aop         xmlns context  http   www springframework org schema context         xmlns jdbc  http   www springframework org schema jdbc  xmlns tx  http   www springframework org schema tx         xmlns util  http   www springframework org schema util         xsi schemaLocation  http   www springframework org schema beans http   www springframework org schema beans spring-beans-3 0 xsd         http   www springframework org schema aop http   www springframework org schema aop spring-aop-3 0 xsd         http   www springframework org schema context http   www springframework org schema context spring-context-3 0 xsd         http   www springframework org schema jdbc http   www springframework org schema jdbc spring-jdbc-3 0 xsd         http   www springframework org schema tx http   www springframework org schema tx spring-tx-3 0 xsd         http   www springframework org schema util http   www springframework org schema util spring-util-3 0 xsd         http   java sun com xml ns persistence orm http   java sun com xml ns persistence orm 2 0 xsd  gt        lt context property-placeholder location  jdbc properties    gt        lt context component-scan base-package  pl com radzikowski webmail  gt           lt context exclude-filter type  annotation  expression  org springframework stereotype Controller    gt       lt  context component-scan gt        lt  -- lt context component-scan base-package  pl com radzikowski webmail service    gt -- gt        lt bean id  dataSource  class  org apache commons dbcp BasicDataSource  destroy-method  close  gt           lt property name  driverClassName  value    jdbc driverClassName     gt           lt property name  url  value    jdbc url     gt           lt property name  username  value    jdbc username     gt           lt property name  password  value    jdbc password     gt       lt  bean gt        lt  -- Persistance Unit Manager for persistance options managing -- gt       lt bean id  persistenceUnitManager  class  org springframework orm jpa persistenceunit DefaultPersistenceUnitManager  gt           lt property name  defaultDataSource  ref  dataSource   gt       lt  bean gt        lt  -- Entity Manager Factory for creating updating DB schema based on persistence files and entity classes -- gt       lt bean id  entityManagerFactory  class  org springframework orm jpa LocalContainerEntityManagerFactoryBean  gt           lt property name  persistenceUnitManager  ref  persistenceUnitManager   gt           lt property name  persistenceUnitName  value  WebMailPU   gt       lt  bean gt        lt  -- Hibernate Session Factory -- gt       lt bean id  sessionFactory  class  org springframework orm hibernate4 LocalSessionFactoryBean  gt           lt property name  dataSource  ref  dataSource   gt           lt  -- lt property name  schemaUpdate  value  true    gt -- gt           lt property name  packagesToScan  value  pl com radzikowski webmail domain    gt           lt property name  hibernateProperties  gt               lt props gt                   lt prop key  hibernate dialect  gt org hibernate dialect MySQLDialect lt  prop gt               lt  props gt           lt  property gt       lt  bean gt        lt  -- Hibernate Transaction Manager -- gt       lt bean id  txManager  class  org springframework orm hibernate4 HibernateTransactionManager  gt           lt property name  sessionFactory  ref  sessionFactory   gt       lt  bean gt        lt  -- Activates annotation based transaction management -- gt       lt tx annotation-driven transaction-manager  txManager   gt    lt  beans gt     webapp WEB-INF web xml   lt web-app xmlns  http   java sun com xml ns j2ee  xmlns xsi  http   www w3 org 2001 XMLSchema-instance  id  WebApp ID  version  2 4  xsi schemaLocation  http   java sun com xml ns j2ee http   java sun com xml ns j2ee web-app 2 4 xsd  gt       lt display-name gt Spring Web MVC Application lt  display-name gt       lt servlet gt           lt servlet-name gt mvc-dispatcher lt  servlet-name gt           lt servlet-class gt org springframework web servlet DispatcherServlet lt  servlet-class gt           lt load-on-startup gt 1 lt  load-on-startup gt       lt  servlet gt       lt servlet-mapping gt           lt servlet-name gt mvc-dispatcher lt  servlet-name gt           lt url-pattern gt   lt  url-pattern gt       lt  servlet-mapping gt       lt context-param gt           lt param-name gt contextConfigLocation lt  param-name gt           lt param-value gt  WEB-INF mvc-dispatcher-servlet xml lt  param-value gt       lt  context-param gt       lt listener gt           lt listener-class gt org springframework web context ContextLoaderListener lt  listener-class gt       lt  listener gt   lt  web-app gt     webapp WEB-INF mvc-dispatcher-servlet xml   lt beans xmlns  http   www springframework org schema beans         xmlns context  http   www springframework org schema context         xmlns mvc  http   www springframework org schema mvc         xmlns xsi  http   www w3 org 2001 XMLSchema-instance         xsi schemaLocation  http   www springframework org schema beans http   www springframework org schema beans spring-beans-3 0 xsd         http   www springframework org schema context http   www springframework org schema context spring-context-3 0 xsd         http   www springframework org schema mvc http   www springframework org schema mvc spring-mvc-3 0 xsd  gt        lt context component-scan base-package  pl com radzikowski webmail  use-default-filters  false  gt           lt context include-filter type  annotation  expression  org springframework stereotype Controller    gt       lt  context component-scan gt        lt mvc annotation-driven  gt        lt bean class  org springframework web servlet view InternalResourceViewResolver  gt           lt property name  prefix  value   WEB-INF views     gt           lt property name  suffix  value   jsp    gt       lt  bean gt    lt  beans gt    pl com radzikowski webmail service AbstractManager  package pl com radzikowski webmail service   import org apache log4j Logger  import org hibernate SessionFactory  import org springframework beans factory annotation Autowired          Master Manager class providing basic fields for services      author Maciej Radzikowski  lt maciej radzikowski com pl gt      public class AbstractManager         Autowired     protected SessionFactory sessionFactory       protected final Logger logger   Logger getLogger this getClass          pl com radzikowski webmail service MailManager  package pl com radzikowski webmail service   import org springframework stereotype Component  import org springframework transaction annotation Transactional    Component  Transactional public class MailManager extends AbstractManager          some methods        pl com radzikowski webmail HomeController  package pl com radzikowski webmail controller   import org springframework beans factory annotation Autowired  import org springframework stereotype Controller  import org springframework ui ModelMap  import org springframework web bind annotation RequestMapping  import org springframework web bind annotation RequestMethod  import pl com radzikowski webmail service MailManager    Controller  RequestMapping      public class HomeController         Autowired     public MailManager mailManager        RequestMapping value        method   RequestMethod GET      public String homepage ModelMap model            return  homepage              Error   SEVERE    Exception while loading the app SEVERE    Undeployment failed for context  WebMail SEVERE    Exception while loading the app   java lang IllegalStateException  ContainerBase addChild  start  org apache catalina LifecycleException  org springframework beans factory BeanCreationException  Error creating bean with name  homeController   Injection of autowired dependencies failed  nested exception is org springframework beans factory BeanCreationException  Could not autowire field  public pl com radzikowski webmail service MailManager pl com radzikowski webmail controller HomeController mailManager  nested exception is org springframework beans factory NoSuchBeanDefinitionException  No qualifying bean of type  pl com radzikowski webmail service MailManager  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     Sorry for a lot of code  but I don t know what can cause that error anymore   Added  I ve created the interface    Component public interface IMailManager     added implements    Component  Transactional public class MailManager extends AbstractManager implements IMailManager     and changed autowired    Autowired public IMailManager mailManager    But it still throws errors  also when I ve tried with  Qualifier        Could not autowire field  public   pl com radzikowski webmail service IMailManager   pl com radzikowski webmail controller HomeController mailManager      I ve tried with different combinations of  Component and  Transactional too   Shouldn t I include beans xml in web xml somehow

User · Answer

I had this happen because my tests were not in the same package as my components. (I had renamed my component package, but not my test package.) And I was using @ComponentScan in my test @Configuration class, so my tests weren't finding the components on which they relied.

So, double check that if you get this error.

User · Answer

One reason BeanB may not exist in the context  Another cause for the exception is the existence of two bean Or definitions in the context  bean that isn   t defined is requested by name from the Spring context   see more this url   http   www baeldung com spring-nosuchbeandefinitionexception

User · Answer

Spent much of my time with this  My bad  Later found that the class on which I declared the annotation Service or Component was of type abstract  Had enabled debug logs on Springframework but no hint was received  Please check if the class if of abstract type  If then  the basic rule applied  can t instantiate an abstract class

User · Answer

Faced the same issue in my spring boot application even though I had my package specific scans enabled like    SpringBootApplication scanBasePackages   com        But  the issue was resolved by providing  ComponentScan   com      in my Application class

User · Answer

Correct way shall be to autowire AbstractManager  as Max suggested  but this should work fine as well    Autowired  Qualifier value  mailService   public MailManager mailManager    and   Component  mailService    Transactional public class MailManager extends AbstractManager

User · Answer

You should autowire interface AbstractManager instead of class MailManager  If you have different implemetations of AbstractManager you can write  Component  mailService   and then  Autowired  Qualifier  mailService   combination to autowire specific class   This is due to the fact that Spring creates and uses proxy objects based on the interfaces

User · Answer

The thing is that both the application context and the web application context are registered in the WebApplicationContext during server startup  When you run the test you must explicitly tell which contexts to load    Try this    RunWith SpringJUnit4ClassRunner class   ContextConfiguration locations     classpath  beans xml     mvc-dispatcher-servlet xml

User · Answer

The solution that worked for me was to add all the relevant classes to the  ContextConfiguration annotation for the testing class  The class to test  MyClass java  had two autowired components  AutowireA and AutowireB  Here is my fix   ContextConfiguration classes    MyClass class  AutowireA class  AutowireB class   public class MyClassTest

User · Answer

My guess is that here   lt context component-scan base-package  pl com radzikowski webmail  use-default-filters  false  gt       lt context include-filter type  annotation  expression  org springframework stereotype Controller    gt   lt  context component-scan gt    all annotations are first disabled by use-default-filters  false  and then only  Controller annotation enabled  Thus  your  Component annotation is not enabled

User · Answer

Can you try annotating only your concrete implementation with  Component  Maybe the following answer could help  It is kind of a similar problem  I usually put Spring annotations in the implementation classes   https   stackoverflow com a 10322456 2619091

User · Answer

I ran in to this recently  and as it turned out  I ve imported the wrong annotation in my service class  Netbeans has an option to hide import statements  that s why I did not see it for some time   I ve used  org jvnet hk2 annotations Service instead of  org springframework stereotype Service

User · Answer

This may help you   I have the same exception in my project  After searching while I found that I am missing the  Service annotation to the class where I am implementing the interface which I want to  Autowired   In your code you can add the  Service annotation to MailManager class    Transactional  Service public class MailManager extends AbstractManager implements IMailManager

User · Answer

If you are testing your controller  Don t forget to use  WebAppConfiguration on your test class

User · Answer

Instead of  Autowire MailManager mailManager  you can mock the bean as given below   import org springframework boot test mock mockito MockBean           MockBean MailManager mailManager    Also  you can configure  MockBean MailManager mailManager  separately in the  SpringBootConfiguration class and initialize like below    Autowire MailManager mailManager

User · Answer

lt context component-scan base-package  com      gt    same issue arrived   i solved it by keeping the annotations intact and in dispatcher servlet    keeping the base package scan as com    this worked for me

User · Answer

I had this happen because I added an autowired dependency to my service class but forgot to add it to the injected mocks in my service unit test   The unit test exception appeared to report a problem in the service class when the problem was actually in the unit test  In retrospect  the error message told me exactly what the problem was

User · Answer

I was facing the same issue while auto-wiring the class from one of my jar file  I fixed the issue by using  Lazy annotation   import org springframework beans factory annotation Autowired  import org springframework context annotation Lazy        Autowired      Lazy     private IGalaxyCommand iGalaxyCommand

[java] @Autowired - No qualifying bean of type found for dependency

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