context.go
func (ctx *Context) ParamsInt64(name string) int64 {
	return com.StrTo(ctx.Params(name)).MustInt64()
}
func (ctx *Context) ParamsInt64(name string) int64 {
	return com.StrTo(ctx.Params(name)).MustInt64()
}
// ParamsInt64 returns params result in int64 type.
// e.g. ctx.ParamsInt64(":uid")