improve the output fomate

 package admin
 
 import (
+	"fmt"
 	"io"
-	"strconv"
 	"sync"
 	"time"
 )
@@ -64,16 +64,12 @@ func (m *UrlMap) AddStatistics(requestMethod, requestUrl, requestController stri
 func (m *UrlMap) GetMap(rw io.Writer) {
 	m.lock.RLock()
 	defer m.lock.RUnlock()
-	rw.Write([]byte("requestURL                    avgTime"))
+	fmt.Fprintf(rw, "| % -30s| % -10s | % -16s | % -16s | % -16s | % -16s | % -16s |\n", "requestUrl", "method", "times", "used (s)", "avg used (μs)", "max used (μs)", "min used (μs)")
 	for k, v := range m.urlmap {
-		rw.Write([]byte(k + ""))
 		for kk, vv := range v {
-			rw.Write([]byte(kk))
-			rw.Write([]byte(strconv.FormatInt(vv.RequestNum, 10)))
-			rw.Write([]byte(strconv.FormatInt(int64(vv.TotalTime), 10)))
-			rw.Write([]byte(strconv.FormatInt(int64(vv.MaxTime), 10)))
-			rw.Write([]byte(strconv.FormatInt(int64(vv.MinTime), 10)))
-			rw.Write([]byte(strconv.FormatInt(int64(vv.TotalTime)/vv.RequestNum, 10)))
+			fmt.Fprintf(rw, "| % -30s| % -10s | % -16d | % -16f | % -16f | % -16f | % -16f |\n", k,
+				kk, vv.RequestNum, vv.TotalTime, vv.MaxTime, vv.MinTime, int64(vv.TotalTime)/vv.RequestNum,
+			)
 		}
 	}
 }