Apereo-Learning-Analytics-Initiative / OpenLRW

import org.apache.commons.lang3.StringUtils;

import org.springframework.security.authentication.AuthenticationServiceException;

import org.springframework.stereotype.Component;

/**

 * An implementation of {@link TokenExtractor} extracts token from

 * Authorization: Bearer scheme.

 * 

 * @author vladimir.stankovic

 *

 * Aug 5, 2016

        if (StringUtils.isBlank(header)) {

            throw new AuthenticationServiceException("Authorization header cannot be blank!");

        }

        if (header.length() < HEADER_PREFIX.length()) {

            throw new AuthenticationServiceException("Invalid authorization header size.");

        }

        return header.substring(HEADER_PREFIX.length(), header.length());

    }

}