Mysql golang xorm 使用mysql数据库

var Orm *xorm.Engine

func InitMysql() error {

        conn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8",
                "root", "123456", "192.168.56.3", 3306, "netacl")

        orm, err := xorm.NewEngine("mysql", conn)
        if err != nil {
                return err
        }
        f, err := os.Create("db.log")
        if err != nil {
                println(err.Error())
                return err
        }
        orm.SetMaxIdleConns(10)
        orm.SetMaxOpenConns(200)
        orm.ShowSQL(false)
        orm.Logger().SetLevel(core.LOG_DEBUG)
        orm.SetLogger(xorm.NewSimpleLogger(f))
        err = orm.Ping()
        if err != nil {
                fmt.Println("连接数据库失败...")
                return err
        }
        fmt.Println("[Connecting MySQL Success!]")
        Orm = orm
        return nil
}

type AclOrderTag struct {
        Acl        `xorm:"extends"`
        Tag        string
}

func test_4() {
        res := make([]*AclOrderTag, 0)
        _ = Orm.Table("acl_order").Join("INNER", "acl", "acl.order_id = acl_order.id").Where("acl_order.tree_id is NULL").Find(&res)     
        fmt.Println(res[0])
}

参考：https://xorm.io/zh/docs/chapter-05/5.join/