modify middleware

@@ -257,7 +257,11 @@ func InternalServerError(rw http.ResponseWriter, r *http.Request) {
 	t.Execute(rw, data)
 }
 
-func registerErrorHander() {
+func Errorhandler(err string, h http.HandlerFunc) {
+	ErrorMaps[err] = h
+}
+
+func RegisterErrorHander() {
 	if _, ok := ErrorMaps["404"]; !ok {
 		ErrorMaps["404"] = NotFound
 	}

@@ -69,52 +69,6 @@ func DumpHeap() {
 	f.Close()
 }
 
-//func showSystemStat(interval time.Duration, count int) {
-
-//	usage1 := &syscall.Rusage{}
-//	var lastUtime int64
-//	var lastStime int64
-
-//	counter := 0
-//	for {
-
-//		//http://man7.org/linux/man-pages/man3/vtimes.3.html
-//		syscall.Getrusage(syscall.RUSAGE_SELF, usage1)
-
-//		utime := (usage1.Utime.Sec * 1000000000) + int64(usage1.Utime.Usec)
-//		stime := (usage1.Stime.Sec * 1000000000) + int64(usage1.Stime.Usec)
-//		userCPUUtil := float64(utime-lastUtime) * 100 / float64(interval)
-//		sysCPUUtil := float64(stime-lastStime) * 100 / float64(interval)
-//		memUtil := usage1.Maxrss * 1024
-
-//		lastUtime = utime
-//		lastStime = stime
-
-//		if counter > 0 {
-//			fmt.Printf("cpu: %3.2f%% us  %3.2f%% sy, mem:%s \n", userCPUUtil, sysCPUUtil, toH(uint64(memUtil)))
-//		}
-
-//		counter += 1
-//		if count >= 1 && count < counter {
-//			return
-//		}
-//		time.Sleep(interval)
-//	}
-
-//}
-
-//func ShowSystemStat(seconds int) {
-//	go func() {
-//		interval := time.Duration(seconds) * time.Second
-//		showSystemStat(interval, 0)
-//	}()
-//}
-
-//func PrintSystemStats() {
-//	interval := time.Duration(1) * time.Second
-//	showSystemStat(interval, 1)
-//}
-
 func ShowGCStat() {
 	go func() {
 		var numGC int64

-package middleware
-
-import (
-	"github.com/astaxie/beego/session"
-)
-
-var (
-	GlobalSessions *session.Manager
-)
-
-func StartSession(provideName, cookieName string, maxlifetime int64, savePath string) {
-	GlobalSessions, _ = session.NewManager(provideName, cookieName, maxlifetime, savePath)
-	go GlobalSessions.GC()
-}