option初始化需要赋予部分默认值

options.go

@@ -38,18 +38,27 @@ func SetMysql(user, password, host, database string, port int) Option {
 			Database: database,
 			Password: password,
 		}
+		if o.Mysql.Port == 0 {
+			o.Mysql.Port = 3306
+		}
 	}
 }
 
+// 使用sqlite数据库
 func SetSqlite(dbPath string) Option {
 	return func(o *clientOptions) {
 		o.Db = "sqlite"
 		o.Sqlite = &SqliteOptions{
 			DbPath: dbPath,
 		}
+		if o.Sqlite.DbPath == "" {
+			o.Sqlite.DbPath = "sqlite.db"
+		}
 	}
 }
 
+
+// 表名前缀
 func SetTablePrefix(perfix string) Option {
 	return func(o *clientOptions) {
 		o.Prefix = perfix