程序段:
String sqlb="select orderid from order where khno='"+khno+"'";
ResultSet rsb=con.executeQuery(sqlb);
if(rsb.next()){
String orderid=rsb.getString(1);
rsb.close();}请问为何第四行无法赋值(记录是肯定有的),而改用session.setAttribute("orderid",rsb.getString(1));则可以?是我写错了那里?谢谢!
String sqlb="select orderid from order where khno='"+khno+"'";
ResultSet rsb=con.executeQuery(sqlb);
if(rsb.next()){
String orderid=rsb.getString(1);
rsb.close();}请问为何第四行无法赋值(记录是肯定有的),而改用session.setAttribute("orderid",rsb.getString(1));则可以?是我写错了那里?谢谢!
解决方案 »
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