JBoss Application Server 4.3 Seam Reference Guide - 20.2. Injecting Spring beans into Seam components

20.2. Injecting Spring beans into Seam components

It is even easier to inject Spring beans into Seam component instances. Actually, there are two possible approaches:

inject a Spring bean using an EL expression
make the Spring bean a Seam component

We'll discuss the second option in the next section. The easiest approach is to access the Spring beans via EL.

The Spring DelegatingVariableResolver is an integration point Spring provides for integrating Spring with JSF. This VariableResolver makes all Spring beans available in EL by their bean id. You'll need to add the DelegatingVariableResolver to faces-config.xml:

<application>
    <variable-resolver>
        org.springframework.web.jsf.DelegatingVariableResolver
    </variable-resolver>
</application>

Then you can inject Spring beans using @In:

@In("#{bookingService}")
private BookingService bookingService;

The use of Spring beans in EL is not limited to injection. Spring beans may be used anywhere that EL expressions are used in Seam: process and pageflow definitions, working memory assertions, etc...