There are a gazillion Class:: modules that will do that for you. What you also can do is:

for my $prop (qw [field1 field2 field3]) {
    eval sprintf <<'END', ($prop) x 3;
        sub %s {
            my $self = shift;
            if (@_) {$self->{%s} = shift};
            return $self->{%s};
         }
    }
END
}
[download]

Then you won't have any runtime penalty due to AUTOLOAD, or whatever runtime solution your Class:: choice uses.

Or you could use a smart editor that allows you to create an accessor using a macro.

Personally, if I find myself making enough accessors in a class that I start contemplating automating it, I wonder whether I really need an object, or whether I'm just creating a glorified struct. It's usually the latter - and Perl already has an excellent data structure to use as a struct: it's called a hash.