fix #298.

main.go

@@ -239,7 +239,14 @@ func main() {
 	cli.OnServerUpdated(func(bot *client.QQClient, e *client.ServerUpdatedEvent) {
 		log.Infof("收到服务器地址更新通知, 将在下一次重连时应用. 地址信息已储存到 servers.bin 文件")
 		_ = ioutil.WriteFile("servers.bin", binary.NewWriterF(func(w *binary.Writer) {
-			w.WriteUInt16(uint16(len(e.Servers)))
+			w.WriteUInt16(func() (c uint16) {
+				for _, s := range e.Servers {
+					if !strings.Contains(s.Server, "com") {
+						c++
+					}
+				}
+				return
+			}())
 			for _, s := range e.Servers {
 				if !strings.Contains(s.Server, "com") {
 					w.WriteString(s.Server)
@@ -250,6 +257,12 @@ func main() {
 	})
 	if global.PathExists("servers.bin") {
 		if data, err := ioutil.ReadFile("servers.bin"); err == nil {
+			func() {
+				defer func() {
+					if pan := recover(); pan != nil {
+						log.Error("读取服务器地址时出现错误: %v", pan)
+					}
+				}()
 				r := binary.NewReader(data)
 				var addr []*net.TCPAddr
 				l := r.ReadUInt16()
@@ -262,6 +275,7 @@ func main() {
 				if len(addr) > 0 {
 					cli.SetCustomServer(addr)
 				}
+			}()
 		}
 	}
 	rsp, err := cli.Login()