拦截器功能

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;
import java.util.Objects;

/**
 * 管理员拦截器
 */
@Slf4j
public class AdminInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        HttpSession session = request.getSession();
        if (Objects.nonNull(session.getAttribute("token"))) {
            return true;
        }
        log.info("无权访问：{}", request.getRequestURI());
        response.setStatus(401);
        return false;
    }

}

拦截器注册

/**
 * 拦截器注册
 */
@Configuration
public class Interceptor implements WebMvcConfigurer {

    @Bean
    UserInterceptor userInterceptor() {
        return new UserInterceptor();
    }

    @Bean
    ReqInterceptor reqInterceptor() {
        return new ReqInterceptor();
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(userInterceptor()).addPathPatterns("/**")
                .excludePathPatterns("/login","/","/*","/css/**","/fonts/**","/img/**","/js/**");
        registry.addInterceptor(reqInterceptor()).addPathPatterns("/**")
                .excludePathPatterns("/fileUpload","/excel");
    }
}

注意：/*代表一级访问，/**代表所有访问

响应请求拦截

import lombok.extern.slf4j.Slf4j;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * 响应请求拦截
 */
@Slf4j
@ControllerAdvice
public class ResponseInterceptor implements ResponseBodyAdvice<Object> {
    @Override
    public boolean supports(MethodParameter methodParameter, Class<? extends HttpMessageConverter<?>> aClass) {
        return false;
    }

    @Override
    public Object beforeBodyWrite(Object o, MethodParameter methodParameter, MediaType mediaType, Class<? extends HttpMessageConverter<?>> aClass, ServerHttpRequest serverHttpRequest, ServerHttpResponse serverHttpResponse) {
        String path = serverHttpRequest.getURI().getPath();
        log.info("请求路径：{}---响应数据：{}", path, o);
        return o;
    }
}