AuthenticationProviderManagement.java 文件源码

/**
 * Iterates over the internal list of authentication providers an tries to authenticate.
 * 
 * @param authentication
 *            The authentication.
 * @return The resulting authentication.
 */
public Authentication authenticate(Authentication authentication) {
    ProviderManager providerManager = getManager();
    if (providerManager != null) {
        try {
            return providerManager.authenticate(authentication);
        } catch (ProviderNotFoundException e) {
            // will be thrown if there is no supporting provider, ignore it since we are not
            // calling supports methods of the registered providers
        }
    }
    return null;
}