RestAuthenticationEntryPoint.java

package net.petrikainulainen.springdata.jpa.web.security;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * This authentication entry point returns the HTTP status code 401.
 * @author Petri Kainulainen
 */
public final class RestAuthenticationEntryPoint implements AuthenticationEntryPoint {

    private static final Logger LOGGER = LoggerFactory.getLogger(RestAuthenticationEntryPoint.class);

    @Override
    public void commence(HttpServletRequest request,
                         HttpServletResponse response,
                         AuthenticationException authException) throws IOException, ServletException {
        LOGGER.info("Authentication required. Returning HTTP status code 401.");
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
    }
}