RestAuthenticationEntryPoint.java

package org.baeldung.common.security;

import java.io.IOException;

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

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

@Component("restAuthenticationEntryPoint")
public final class RestAuthenticationEntryPoint implements AuthenticationEntryPoint {

    @Override
    public final void commence(final HttpServletRequest request, final HttpServletResponse response, final AuthenticationException authException) throws IOException {
        response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "Unauthorized");
    }

}