@Component(value = "userService")
public class UserService implements AuthenticationProvider {
@Inject
@Named(value = "dataSource")
private DataSource dataSource1;
String name;
String password;
int countRow=0;
public Authentication authenticate(Authentication auth) throws AuthenticationException {
    ResultSet resultSet = null;
    PreparedStatement preparedStatement = null;
    Connection connection = null;
    name= auth.getName();
    password=auth.getCredentials().toString();
    final String select= "select username,password from users where username='"+name+"'and password='"+password+"'";

    try {
        connection = dataSource1.getConnection();
        preparedStatement = connection.prepareStatement(select);
        resultSet = preparedStatement.executeQuery();
        if(resultSet.next()){
            countRow++;
            if(countRow!=0){

           return new UsernamePasswordAuthenticationToken(name, null);}
        }
        return null;
        }



    return new UsernamePasswordAuthenticationToken("", "");
}