스프링 인터셉터 - 인증 체크

인터셉터

package hello.login.web.interceptor;


import hello.login.web.SessionConst;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;

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

@Slf4j
public class LoginCheckInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String requestURI = request.getRequestURI();

        log.info("인증 체크 인터셉터 실행 {}", requestURI);

        HttpSession session = request.getSession();

        if (session == null || session.getAttribute(SessionConst.LOGIN_MEMBER) == null) {
            log.info("미인증 사용자 요청");

            // 로그인으로 redirect
            response.sendRedirect("/login?redirectURL="+requestURI);
            return false;
        }

        return true;
    }
}

인터셉터 스프링 빈 등록

package hello.login;

import hello.login.web.filter.LogFilter;
import hello.login.web.filter.LoginCheckFilter;
import hello.login.web.interceptor.LogInterceptor;
import hello.login.web.interceptor.LoginCheckInterceptor;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import javax.servlet.Filter;

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LogInterceptor())
                .order(1)
                .addPathPatterns("/**") // 하위 경로 전체
                .excludePathPatterns("/css/**", "/*.ico", "/error");
		// 로그인 체크 인터셉트 부분
        registry.addInterceptor(new LoginCheckInterceptor())
                .order(2)
                .addPathPatterns("/**")
                .excludePathPatterns("/", "/members/add", "/login",
                        "/logout", "/css/**", "/*.ico", "/error");
    }


}