拦截器记录接口耗时

1、定义一个拦截器，实现拦截器接口

package org.example.interceptor;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

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

public class LogTimeInterceptor implements HandlerInterceptor {

    private static final Logger LOGGER = LoggerFactory.getLogger(LogTimeInterceptor.class);
    private static final String START_TIME = "__START_TIME__";

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        LOGGER.info("================== [{}]请求进入 ==================", request.getRequestURI());
        if (request.getAttribute(START_TIME) != null) {
            return true;
        }
        request.setAttribute(START_TIME, System.currentTimeMillis());
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
        Object attribute = request.getAttribute(START_TIME);
        if (attribute == null) {
            return;
        }
        long endTime = System.currentTimeMillis();
        long startTime = (long) attribute;
        if (endTime - startTime < 500){
            LOGGER.info("================== [{}]执行完成，耗时为：{} ms ==================", request.getRequestURI(), endTime - startTime);
        } else if (endTime - startTime >= 500 &&  endTime - startTime <= 1000){
            LOGGER.error("================== [{}]执行完成，耗时大于500ms,小于1s,耗时为：{} ms ==================", request.getRequestURI(), endTime - startTime);
        } else{
            LOGGER.error("================== [{}]执行完成，耗时大于1s,耗时为：{} ms ==================", request.getRequestURI(), endTime - startTime);
        }
    }

}

2、配置拦截器使其生效

package org.example.config;

import org.example.interceptor.LogTimeInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class DefaultWebMvcConfigurer implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        LogTimeInterceptor logTimeInterceptor = new LogTimeInterceptor();
        registry.addInterceptor(logTimeInterceptor)
                .addPathPatterns("/**");
    }
}