优化配置读取规则，只允许读取.json配置

cluster/parsecfg.go

@@ -6,6 +6,7 @@ import (
 	"github.com/duanhf2012/origin/rpc"
 	jsoniter "github.com/json-iterator/go"
 	"os"
+	"path/filepath"
 	"strings"
 )
 
@@ -126,6 +127,10 @@ func (cls *Cluster) readLocalService(localNodeId int) error {
 			continue
 		}
 
+		if filepath.Ext(f.Name())!= ".json" {
+			continue
+		}
+
 		filePath := strings.TrimRight(strings.TrimRight(clusterCfgPath, "/"), "\\") + "/" + f.Name()
 			currGlobalCfg, serviceConfig, mapNodeService, err := cls.readServiceConfig(filePath)
 		if err != nil {