Java Reference
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Figure 6-5. Class diagram: authentication provider
The providers implement the AuthenticationProvider interface. It defines two
methods. The authenticate method is used to trigger the actual authentication process.
The authentication manager invokes this method and passes a reference to the
Authentication object. The supports method checks whether the authentication provider
can work with the given Authentication object. As shown in Figure 6-5, Spring provides
several concrete implementations catering to most security requirements. Listing 6-9
shows the authentication provider for the current example.
Listing 6-9. applicationContext-security.xml
<?xml version="1.0" encoding="UTF-8"?>
<!—Other beans -->
<bean id="authenticationManager"
<property name="providers">
<ref local="daoAuthenticationProvider"/>
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