RestAuthenticationEntryPoint.java

package com.deveagles.be15_deveagles_be.common.jwt;

import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.stereotype.Component;

@Component
public class RestAuthenticationEntryPoint implements AuthenticationEntryPoint {

  @Override
  public void commence(
      HttpServletRequest request,
      HttpServletResponse response,
      AuthenticationException authException)
      throws IOException, ServletException {
    response.setContentType("application/json;charset=UTF-8");
    response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
    String jsonResponse =
        "{\"error\": \"Unauthorized\", \"message\": \"" + authException.getMessage() + "\"}";
    response.getWriter().write(jsonResponse);
  }
}