@Autowired in web applications

"Marks a constructor, field, setter method or config method as to be autowired by Spring's dependency injection facilities." (http://docs.spring.io/spring/docs/3.0.x/api/org/springframework/beans/factory/annotation/Autowired.html)

Almost all samples on this topic use command line Java applications that programatically load the configuration file that maps the interface to its implementation class. In JSF based applications use the context param tag in web.xml to achieve the same result.

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:/security/samlUserDetailsService4Autowire.xml
            classpath:/security/securityContext.xml
        </param-value>
</context-param>
Please notice that the order of configuration files is important and is dictated by dependency injection 'dependencies' (at the moment of injection the required instances to be injected must already exist)