好吧，如果你只是设置一个cookie，我猜你可以简单一点喜欢：

Well, if you are only setting a cookie I guess you could simply do like:

urlConn.setRequestProperty("Cookie", "user=mary17; domain=airtravelbargains.com; path=/autos");

如果你设置多个cookie，你可能会使用相反，addRequestProperty 方法。

If you're setting more than one cookie than you could probably use the addRequestProperty method instead.

对于expires属性，请确保使用以下格式：Weekday，DD-Mon-YY HH：MM：SS GMT 。

For the expires attribute make sure to use the format: Weekday, DD-Mon-YY HH:MM:SS GMT.

唯一的合法时区是GMT，日期元素之间的分隔符必须是
破折号。

The only legal time zone is GMT, and the separators between the elements of the date must be dashes.