public class MyInterceptor implements HandlerInterceptor {
private static final Logger LOGGER = LoggerFactory.getLogger(MyInterceptor.class);
private static final ThreadLocal<Long> START_THREAD_LOCAL = new ThreadLocal<>();
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
throws Exception {
String uri = request.getRequestURI();
LOGGER.info(uri + " preHandle");
Long startTime = System.currentTimeMillis(); //获取开始时间
START_THREAD_LOCAL.set(startTime); //线程绑定变量（该数据只有当前请求的线程可见）
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
String uri = request.getRequestURI();
LOGGER.info(uri + " postHandle");
Long startTime = START_THREAD_LOCAL.get();//得到线程绑定的局部变量（开始时间）
Long endTime = System.currentTimeMillis(); //2、结束时间
Long time = endTime - startTime;
LOGGER.info("http request all time: " + time + "ms");
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler,
Exception ex) throws Exception {
String uri = request.getRequestURI();
LOGGER.info(uri + " afterCompletion");
if (START_THREAD_LOCAL != null) {
START_THREAD_LOCAL.remove(); // 移除ThreadLocal中的局部变量
}
}
}
