New features for Spring 3.0

This is a list of some new features for Spring 3.0:

• Support for Java EE 6: JPA2, JSF2, EJB3.1...
• Core APIs updated for Java 5: typed bean instances returned
  T getBean(Class<T> requiredType)
• Support embedded database:  Support for embedded Java database engines provides by the org.springframework.jdbc.datasource.embedded package (hsql, h2...).
• New features from JavaConfig: Some core features from the JavaConfig project have been added to the Spring Framework.

@Configuration
public class AppConfig {

    private
    @Value("#{jdbcProperties.url}")
    String url;
    private
    @Value("#{jdbcProperties.username}")
    String username;
    private
    @Value("#{jdbcProperties.password}")
    String password;

    /**
     * ........
     * some code here
     * ........
     */
    @Bean
    public DataSource dataSource() {
        return new DriverManagerDataSource(url, username, password);
    }
}

The properties file is declared into application context xml file

<util:properties id="jdbcProperties" location="/WEB-INF/jdbc.properties"/>

• Object to XML mapping: Moved from Spring web services to Spring core (package org.springframework.oxm).

You can see how integrating Spring Security 3 with Extjs here
References: http://www.springsource.org/documentation