AjaxAuthenticationEntryPoint.java

package ru.hflabs.rcd.web.handler;

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint;

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

/**
 * Класс <class>AjaxAwareLoginUrlAuthenticationEntryPoint</class> реализует точку входа аутентификации для AJAX запросов
 *
 * @see org.springframework.security.web.AuthenticationEntryPoint
 */
public class AjaxAuthenticationEntryPoint extends LoginUrlAuthenticationEntryPoint {

    public AjaxAuthenticationEntryPoint(String loginFormUrl) {
        super(loginFormUrl);
    }

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authException) throws IOException, ServletException {
        String xRequestedWith = request.getHeader("x-requested-with");
        if ("XMLHttpRequest".equals(xRequestedWith) && authException != null) {
            response.sendError(HttpServletResponse.SC_UNAUTHORIZED);
        } else {
            super.commence(request, response, authException);
        }
    }
}