feat(config):增加用户会话时长的配置项。

config/settings.go

@@ -29,11 +29,16 @@ type RedisSetting struct {
 	DB       int
 }
 
+type ServiceSetting struct {
+	MaxSessionLife time.Duration
+}
+
 //定义全局变量
 var (
 	ServerSettings   *ServerSetting
 	DatabaseSettings *DatabaseSetting
 	RedisSettings    *RedisSetting
+	ServiceSettings  *ServiceSetting
 )
 
 //读取配置到全局变量
@@ -56,5 +61,10 @@ func SetupSetting() error {
 	if err != nil {
 		return err
 	}
+
+	err = s.ReadSection("Service", &ServiceSettings)
+	if err != nil {
+		return err
+	}
 	return nil
 }