diff --git a/server/imserver/friendsmgr.go b/server/imserver/friendsmgr.go
index 2f2ac7b6..fe725748 100644
--- a/server/imserver/friendsmgr.go
+++ b/server/imserver/friendsmgr.go
@@ -67,7 +67,7 @@ func (fm *FriendsMgr) searchFriends(searchKeyword string) []*User {
 		}
 	}
 
-	listFriend := make([]*User, 10)
+	var listFriend []*User
 	lowercaseQuery := strings.ToLower(searchKeyword)
 	for _, u := range fm.users {
 		if strings.Contains(strings.ToLower(u.Username), lowercaseQuery) {
@@ -174,7 +174,7 @@ func (fm *FriendsMgr) rejectFriendRequest(user1Id string, user2Id string) error
 // CMListFriend 我的好友列表
 func (fm *FriendsMgr) listFriend(accountId string) []*User {
 	// By default, Users member data count:10
-	users := make([]*User, 10)
+	var users []*User
 	for _, friendship := range fm.friendships[accountId] {
 		if friendship.User1.AccountId != accountId {
 			uEntity := &User{
@@ -218,7 +218,7 @@ func (fm *FriendsMgr) loadUsersFromDB(conn *q5.Mysql) {
 	// Load DB users to struct FriendsMgr.user
 	rows, err := conn.Query("select account_id, name from t_user")
 	if err != nil {
-		f5.GetSysLog().Info("mysql error", err)
+		f5.GetSysLog().Info("mysql error:%s\n", err)
 		return
 	}
 	fm.users = make(map[string]*User)
@@ -237,7 +237,7 @@ func (fm *FriendsMgr) loadFriendshipsFromDB(conn *q5.Mysql) {
 	// Load DB t_friend_ships to struct FriendsMgr.friendship
 	rows, err := conn.Query("select account1_id, account2_id from t_friend_ships;")
 	if err != nil {
-		f5.GetSysLog().Info("mysql error", err)
+		f5.GetSysLog().Info("mysql error:%s\n", err)
 		return
 	}
 	fm.friendships = make(map[string][]*Friendship)
@@ -261,7 +261,7 @@ func (fm *FriendsMgr) loadFriendshipsFromDB(conn *q5.Mysql) {
 func (fm *FriendsMgr) loadPendingRequestsFromDB(conn *q5.Mysql) {
 	rows, err := conn.Query("select sender_account_id, receiver_account_id, flag from t_pending_friend_requests;")
 	if err != nil {
-		f5.GetSysLog().Info("mysql error", err)
+		f5.GetSysLog().Info("mysql error:%s\n", err)
 		return
 	}
 	pendingReqs := make(map[string]map[string]bool, 10)
diff --git a/server/imserver/friendsmgr_test.go b/server/imserver/friendsmgr_test.go
new file mode 100644
index 00000000..4360c96c
--- /dev/null
+++ b/server/imserver/friendsmgr_test.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestRegisterUser(t *testing.T) {
+	fm := &FriendsMgr{}
+
+	// init
+	fm.users = make(map[string]*User, 10)
+	fm.searchCaches = make(map[string]SearchCache, 10)
+	fm.friendships = make(map[string][]*Friendship, 10)
+	fm.pendingReqs = make(map[string]map[string]bool, 10)
+
+	// Register users
+	fm.registerUser("1", "google")
+	fm.registerUser("2", "apple")
+	fm.registerUser("3", "sony")
+	fm.registerUser("4", "panasonic")
+	fmt.Printf("users: %d \n", len(fm.users))
+
+	// Search users
+	searchResult := fm.searchFriends("a")
+	fmt.Printf("search result count: %d \n", len(searchResult))
+
+	// Add friend request
+	// google 申请添加 apple 好友
+	fmt.Printf("after: pendingReqs count: %d \n", len(fm.pendingReqs))
+	fm.addFriendRequest("1", "2")
+	fmt.Printf("before: pendingReqs count: %d \n", len(fm.pendingReqs))
+}
diff --git a/server/imserver/playermgr.go b/server/imserver/playermgr.go
index e7175359..5ba68a24 100644
--- a/server/imserver/playermgr.go
+++ b/server/imserver/playermgr.go
@@ -51,7 +51,7 @@ func (this *PlayerMgr) init() {
 			}
 		}
 	} else {
-		f5.GetSysLog().Info("mysql error", err)
+		f5.GetSysLog().Info("mysql error:%s\n", err)
 	}
 }
 
@@ -88,7 +88,7 @@ func (this *PlayerMgr) CMLoginResult(hdr *f5.MsgHdr, msg *cs.CMLogin, rsp f5.Htt
 	}{}
 	err := json.Unmarshal([]byte(rsp.GetRawData()), &resObj)
 	if err != nil {
-		f5.GetSysLog().Info("Api服务器JSON 解析错误:", err)
+		f5.GetSysLog().Info("Api服务器JSON 解析错误:%s\n", err)
 		return
 	}
 	if resObj.Errcode != 0 {