Http401UnauthorizedEntryPoint.java

package org.hoteia.qalingo.core.web.handler.security;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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

/**
 * Returns a 401 error code (Unauthorized) to the client.
 */
@Component(value = "http401UnauthorizedEntryPoint")
public class Http401UnauthorizedEntryPoint implements AuthenticationEntryPoint {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    /**
     * Always returns a 401 error code to the client.
     */
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException arg2) throws IOException,
            ServletException {

        logger.debug("Pre-authenticated entry point called. Rejecting access");
        response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Access Denied");
    }
}