Add ability to get statistics in json format

@@ -15,6 +15,7 @@
 package toolbox
 
 import (
+	"encoding/json"
 	"fmt"
 	"sync"
 	"time"
@@ -111,6 +112,31 @@ func (m *UrlMap) GetMap() map[string]interface{} {
 	return content
 }
 
+func (m *UrlMap) GetMapJSON() ([]byte, error) {
+	return json.Marshal(m)
+}
+
+func (m UrlMap) MarshalJSON() ([]byte, error) {
+
+	resultLists := make([]map[string]interface{}, 0)
+
+	for k, v := range m.urlmap {
+		for kk, vv := range v {
+			result := map[string]interface{}{
+				"request_url": k,
+				"method":      kk,
+				"times":       vv.RequestNum,
+				"total_time":  toS(vv.TotalTime),
+				"max_time":    toS(vv.MaxTime),
+				"min_time":    toS(vv.MinTime),
+				"avg_time":    toS(time.Duration(int64(vv.TotalTime) / vv.RequestNum)),
+			}
+			resultLists = append(resultLists, result)
+		}
+	}
+	return json.Marshal(resultLists)
+}
+
 // global statistics data map
 var StatisticsMap *UrlMap
 

@@ -28,4 +28,10 @@ func TestStatics(t *testing.T) {
 	StatisticsMap.AddStatistics("POST", "/api/user/xiemengjun", "&admin.user", time.Duration(13000))
 	StatisticsMap.AddStatistics("DELETE", "/api/user", "&admin.user", time.Duration(1400))
 	t.Log(StatisticsMap.GetMap())
+
+	jsonString, err := StatisticsMap.GetMapJSON()
+	if err != nil {
+		t.Errorf(err.Error())
+	}
+	t.Log(string(jsonString))
 }