Note: I have already tried the solutions available in similar question on SO.
I am working on a simple CRUD application using JSF, Java 8, Tomcat 9, Maven, H2 db. When I am trying to start the server, following exception occurs
Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type ContactsDAO with qualifiers @Default at injection point [BackedAnnotatedParameter] Parameter 1 of [BackedAnnotatedConstructor] @Inject public com.contacts.ContactsController(ContactsDAO)
When I remove @Inject annotation from the constructor of ContactsController, the exception is gone but the contactsDao is null hence I am unable to get the list of contacts.
ContactsController.java
import javax.enterprise.context.SessionScoped;
import javax.inject.Inject;
import javax.inject.Named;
@Named("contactsController")
@SessionScoped
public class ContactsController implements Serializable {
public ContactsController() {
}
@Inject
public ContactsController(ContactsDAO contactDAO) {
this.contactDAO = contactDAO;
}
@PostConstruct
public void init() {
logger.info("retrieving list of contacts");
try {
if(contactDAO != null) {
System.out.println("ifff");
contacts = contactDAO.getAllContacts();
}
else {
System.out.println("Contacts DAO null");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
ContactsDAO.java
public interface ContactsDAO {
List<Contact> getAllContacts() throws SQLException;
}
ContactsDAOImpl.java
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Named;
@Named
@ApplicationScoped
public class ContactsDAOImpl implements ContactsDAO, Serializable{
@Override
public List<Contact> getAllContacts() throws SQLException {
List<Contact> contacts = new ArrayList<>();
try {
String sql = "SELECT * FROM contacts";
connect();
PreparedStatement pstmt = jdbcConnection.prepareStatement(sql);
ResultSet rs = pstmt.executeQuery();
while (rs.next()) {
Contact newContact = new Contact();
newContact.setId(rs.getInt("id"));
contacts.add(newContact);
}
}
catch (SQLException e) {
e.printStackTrace();
}
return contacts;
}
}
WEB-INF/beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/beans_1_1.xsd"
bean-discovery-mode="annotated">
</beans>
Tomcat does not support CDI. Look at this post from @BalusC
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