package com.hz1202.common;

import com.hz1202.utils.JsonMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;

/**
 * @Author: mol
 * @Description:http请求后监听
 * @Date: create in 14:57 2018/2/27
 */
@Slf4j
public class HttpInterceptor extends HandlerInterceptorAdapter{
    private static final String START_TIME = "requestStartTime";

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String url = request.getRequestURL().toString();
        Map parameterMap = request.getParameterMap();
        log.info("【请求开始】url:{},  params:{}",url, JsonMapper.object2String(parameterMap));
        long start = System.currentTimeMillis();
        request.setAttribute(START_TIME,start);
        return true;
    }

    /**
     * 正常请求后调用
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        String url = request.getRequestURL().toString();
        long start = (Long) request.getAttribute(START_TIME);
        long end = System.currentTimeMillis();
        log.info("【请求完成】url:{},  耗时:{}",url, end-start);
    }

    /**
     *任何请求后都要调用
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        String url = request.getRequestURL().toString();
        Map parameterMap = request.getParameterMap();
        long start = (Long) request.getAttribute(START_TIME);
        long end = System.currentTimeMillis();
        log.info("【请求结束】url:{},  耗时:{}, param:{}",url, end-start, JsonMapper.object2String(parameterMap));
    }
}