[Java Spring Boot AuthenticationEntryPoint] #SpringBoot

AuthenticationEntryPoint.java

package com.example.project;

import java.io.IOException;
import java.io.PrintWriter;

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

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.www.BasicAuthenticationEntryPoint;
import org.springframework.stereotype.Component;

@Component
public class AuthenticationEntryPoint extends BasicAuthenticationEntryPoint {

	@Override
    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException authEx)
      throws IOException, ServletException {
        response.addHeader("LoginUser", "Basic " +getRealmName());
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        PrintWriter writer = response.getWriter();
        writer.println("HTTP Status 401 - " + authEx.getMessage());
    }
	
	@Override
    public void afterPropertiesSet() throws Exception {
        setRealmName("springboot");
        super.afterPropertiesSet();
    }
}