package com.fioc.ect.fproject.web.interceptors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.NamedThreadLocal;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import com.fioc.ect.fproject.utils.DateUtil;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.text.SimpleDateFormat;
/**
* @Author wulei
* @Title: LogInterceptor
* @Description: 日志拦截器, 用于记录请求的时间
* @Date 2018/10/25 13:14
*/
public class LogInterceptor implements HandlerInterceptor {
/**
* logger
*/
private static final Logger logger = LoggerFactory.getLogger(LogInterceptor.class);
private static final ThreadLocal<Long> startTimeThreadLocal = new NamedThreadLocal<>("ThreadLocal StartTime");
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Object handler) {
if (logger.isDebugEnabled()) {
// 1、开始时间
long beginTime = System.currentTimeMillis();
// 线程绑定变量（该数据只有当前请求的线程可见）
startTimeThreadLocal.set(beginTime);
logger.debug("开始计时: {} URI: {}", new SimpleDateFormat("hh:mm:ss.SSS")
.format(beginTime), request.getRequestURI());
}
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) {
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
Object handler, Exception ex) {
// 打印JVM信息。
if (logger.isDebugEnabled()) {
// 得到线程绑定的局部变量（开始时间）
long beginTime = startTimeThreadLocal.get();
// 2、结束时间
long endTime = System.currentTimeMillis();
logger.debug("计时结束：{} 耗时：{} URI: {} 最大内存: {}m 已分配内存: {}m 已分配内存中的剩余空间: {}m 最大可用内存: {}m",
new SimpleDateFormat("hh:mm:ss.SSS").format(endTime), DateUtil.formatDateTime(endTime - beginTime),
request.getRequestURI(), Runtime.getRuntime().maxMemory() / 1024 / 1024,
Runtime.getRuntime().totalMemory() / 1024 / 1024, Runtime.getRuntime().freeMemory() / 1024 / 1024,
(Runtime.getRuntime().maxMemory() - Runtime.getRuntime().totalMemory() + Runtime.getRuntime().freeMemory()) / 1024 / 1024);
}
}
}
