queryString="CREATE TRIGGER TRIGGER1 ON jishi FOR INSERT, UPDATE, DELETE AS select * from jishi" ;
rst = stmt.executeQuery(queryString);
为何抛出java.lang.NullPointerException
rst = stmt.executeQuery(queryString);
为何抛出java.lang.NullPointerException
执行查询,而你的queryString是创建一个触发器,无结果返回啊
stmt.executeUpdate(queryString);