Spring Social facebook + Spring Security - facebook

Question

I want to integrate Spring Social facebook into my application with Spring Security (I use xml configurations). All I need is just connect facebook account with my app's account. In simple example I found this:
<bean id="connectionRepository" factory-method="createConnectionRepository"
factory-bean="usersConnectionRepository" scope="request">
<constructor-arg value="#{request.userPrincipal.name}" />
<aop:scoped-proxy proxy-target-class="false" />
</bean>
So, as I understood, this method comes into play:
public ConnectionRepository createConnectionRepository(String userId) {
if (userId == null) {
throw new IllegalArgumentException("userId cannot be null");
}
return new JdbcConnectionRepository(userId, jdbcTemplate, connectionFactoryLocator, textEncryptor, tablePrefix);
}
It resives "userId" from #{request.userPrincipal.name}. So, my question: How can I pass "userId"
to this method if I want to obtain this "userId" using SecurityContextHolder.getContext().getAuthentication().getPrincipal().
The only way I see is to create my implementation of JdbcUsersConnectionRepository and redefine createConnectionRepository(String userId) method. But maybe there is more elegant solution.

Answer 1

There is another way:
<bean id="connectionRepository" factory-method="createConnectionRepository" factory-bean="usersConnectionRepository"
scope="request">
<constructor-arg value="#{authenticationService.getAuthenticatedUsername()}" />
<aop:scoped-proxy proxy-target-class="false" />
</bean>
#Service("authenticationService")
public class AuthenticationService {
public String getAuthenticatedUsername() {
return SecurityContextHolder.getContext().getAuthentication().getPrincipal();
}
}
You can do it complitely in SPeL too (I do not like this kind of dependencies):
<bean id="connectionRepository" factory-method="createConnectionRepository" factory-bean="usersConnectionRepository"
scope="request">
<constructor-arg value="#{T(org.springframework.security.core.context.SecurityContextHolder).getContext().getAuthentication().getPrincipal()}" />
<aop:scoped-proxy proxy-target-class="false" />
</bean>