在beego中可以使用多个注释吗？

I have model like:

type Service struct {
    Id       uint64 
    Name     string 
    Secret   string 
    Disabled bool
}

And want to use annotations like form, valid and orm. And I can't find how I should declare these annotations. Should it be one or many? If many, what separator should I use?

Quoting from reflect.StructTag:

By convention, tag strings are a concatenation of optionally space-separated key:"value" pairs.

So you may specify multiple key-value pairs separated by space, like:

type Service struct {
    Id uint64 `form:"id" valid:"Range(1, 999)" orm:"auto"`
}

See more about tags in this answer: What are the use(s) for tags in Go?