springmvc-cat实时监控demo

package com.k12ct.demo; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; import com.dianping.cat.Cat; import com.dianping.cat.message.Message; import com.dianping.cat.message.Transaction; public class CatInterceptor implements HandlerInterceptor { private ThreadLocal<Transaction> tranLocal = new ThreadLocal<Transaction>(); private ThreadLocal<Transaction> pageLocal = new ThreadLocal<Transaction>(); @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String uri = request.getRequestURI(); Transaction t = Cat.newTransaction("URL", uri); Cat.logEvent("URL.Method", request.getMethod(), Message.SUCCESS, request.getRequestURL().toString()); Cat.logEvent("URL.Host", request.getMethod(), Message.SUCCESS, request.getRemoteHost()); tranLocal.set(t); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { String viewName = modelAndView != null ? modelAndView.getViewName() : "无"; Transaction t = Cat.newTransaction("View", viewName); pageLocal.set(t); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // 请求-页面渲染前 Transaction pt = pageLocal.get(); pt.setStatus(Transaction.SUCCESS); pt.complete(); // 总计 Transaction t = tranLocal.get(); t.setStatus(Transaction.SUCCESS); t.complete(); } }