小编dj3*_*dj3的帖子

下面是我尝试迭代一系列地图; 由于转换错误导致代码失败:Exception in thread "main" java.lang.RuntimeException: java.lang.ClassCastException: clojure.lang.Cons cannot be cast to java.util.Map$Entry.

任何人都可以解释/演示我应该如何迭代结果集？谢谢.

(with-connection db
                 (with-query-results rs ["select category from users group by category"]
                                     (doall
                                       (for [s [rs]] 
                                       (do (println (val s)))))))