Spring3 - #Autowired - spring-mvc

Question

This is my applicationContext.xml
<bean id="JdbcUserDao" class="controller.User.JdbcUserDao">
<property name="dataSource" ref="dataSource"/>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="org.apache.derby.jdbc.ClientDriver"
p:url="jdbc:derby://localhost:1527/TodoDb"
p:username="root"
p:password="root" />
This is my implDao class :
#Repository
public class JdbcUserDao implements IUserDao {
private JdbcTemplate jt;
#Autowired
private DataSource dataSource;
public DataSource getDataSource() {
return dataSource;
}
public void setDataSource(DataSource dataSource) {
this.dataSource = dataSource;
jt = new JdbcTemplate(this.dataSource);
}
public JdbcTemplate getJt() {
return jt;
}
public void setJt(JdbcTemplate jt) {
this.jt = jt;
}
#Override
public List<User> getUsers(final String username, final String password) {
List<User> users = this.jt.query("SELECT username, password FROM USERS",
new RowMapper<User>() {
#Override
public User mapRow(ResultSet rs, int i) throws SQLException {
User user = new User();
user.setUsername(rs.getString("username"));
user.setPassword(rs.getString("password"));
return user;
}
});
return users;
}
}
Problems:
this.dataSource available when it sets the dataSource through #Autowired like the configs in xml
when I use dataSource in getUsers, it become null ?
Questions:
How can I get this works ?
I'm new to spring3 so I really need your help.

Answer 1

In order to use autowiring, you need to add the following to your xml file configuration.
<context:annotation-config />
If it doesn't help then please add
<context:component-scan base-package="org.springframework.jdbc.datasource" />

Answer 2

Try adding the AutowiredPostProcessor to the config
<bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor">
</bean>

Answer 3

You could try adding the autowire to the set method instead of the property.

Answer 4

you need to import the class which you are doing autowired without access modifiers in repository class file
com.<your project>.controller.User.JdbcUserDao
and spring annotation
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.repository.CrudRepository;
#Repository
public class JdbcUserDao implements IUserDao {
#Autowired
DataSource dataSource;