下列代码中 rs 为查询得到的结果集,代码运行后表格的每一行有几个单元格 ( ) while(rs.next()){ out.print(" "); out.print(" "+rs.getString(1)+" "); out.print(" "+rs.getString(2)+" "); out.print(" "+rs.getString(3)+" "); out.print(" "+rs.getString("publish")+" "); out.print(" "+rs.getFloat("price")+" "); out.print(" "); }