Spring Autowire - java.lang.NoSuchMethodException

[Muhammad Abdul Arif]

Hi All,

I was trying to use annotations in my project which was using SimpleFormControllers. I am stuck in adding @Autowired to one of my DAO class. Below is the code. Can you guys please help me how to autowire this DAO.

public interface GenericDao <T, PK extends Serializable> {

    /** Retrieve an object that was previously persisted to the database using
     *   the indicated id as primary key
     */
    public T findbyId(PK id);

    /** Save or Update changes made to a persistent object.  */
    void saveOrUpdate(T transientObject);

    /** Remove an object from persistent storage in the database */
    void delete(T persistentObject);
}

@Component
@Transactional
public class GenericDaoHibernateImpl <T, PK extends Serializable>
implements GenericDao<T, PK> 
{
	private Class<T> type;
	
	@Autowired
	private HibernateTemplate hibernateTemplate;
	
	@Autowired
	private JdbcTemplate jdbcTemplate;
	
	
	public GenericDaoHibernateImpl(Class<T> type) {
	    this.type = type;
	}
	......

@Component
public class MemberDAO extends GenericDaoHibernateImpl<Member, String>
{
	public MemberDAO(Class<Member> type) 
	{
		super(type);
	}

}

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberDAO' defined in file [F:\Arif\Eclipse Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\InfySwift\WEB-INF\classes\com\infyswift\entities\member\dao\MemberDAO.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.infyswift.entities.member.dao.MemberDAO]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.infyswift.entities.member.dao.MemberDAO.<init>()
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:965)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:911)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:844)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:786)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:474)
	... 43 more
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.infyswift.entities.member.dao.MemberDAO]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.infyswift.entities.member.dao.MemberDAO.<init>()
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:70)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:958)
	... 54 more
Caused by: java.lang.NoSuchMethodException: com.infyswift.entities.member.dao.MemberDAO.<init>()
	at java.lang.Class.getConstructor0(Class.java:2706)
	at java.lang.Class.getDeclaredConstructor(Class.java:1985)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:65)
	... 55 more

[Mark Spritzler]

Yep very simple. your

@Component
public class MemberDAO

Doesn't have a no args constructor, and there is no @Autowired on any of its constructor(s).

Mark