询问java中链接数据库问题 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '5' at line 1 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 SQL语句语法有错误,在第一行靠近字符'5'的地方。 public List<Product> findByCatId(int id, int begin, int size, String order)throws Exception { String subOrder1 = order.substring(0, order.lastIndexOf("-")); String subOrder2 = order.substring(order.lastIndexOf("-") + 1); System.out.println("subOrder1:"+subOrder1); System.out.println( "subOrder2:"+subOrder2); String sql="select dp.*,db.* from d_category_product dcp join d_product dp on(dcp.product_id=dp.id) " + " join d_book db on(dp.id=db.id)" + " where dcp.cat_id=? limit ? ? order by ? ? ";Connection con = DBUtil.getCon();PreparedStatement pst= con.prepareStatement(sql);pst.setInt(1, id);pst.setInt(2, begin);pst.setInt(3, size);pst.setString(4, subOrder1);pst.setString(5, subOrder2); 我通过subOrder1 subOrder2来排序 ,通过begin size来设置分页 不知道哪里错了 String sql="select dcp.*,db.* from d_category_product dcp join d_product dp on(dcp.product_id=dp.id)看到了没 String sql="select dcp.*,db.* from d_category_product dcp join d_product dp on(dcp.product_id=dp.id) " + " join d_book db on(dcp.id=db.id)" + " where dcp.cat_id=? limit ? ? order by ? ? ";细节决定成败,两个c 求助:是关于数据库的连接 js获取浏览器全屏时的高宽(不论浏览器是最大化还是最小化还是多大) web项目 想用java做一个仓库管理系统,比较简单的那种 怎样屏蔽窗体的关闭按钮阿 java web毕业设计 能不能让EditPlus 2具有Code Assist功能? 交流一下java的学习经验吧! jsp 连结数据库问题 很急切的问题===大家都帮忙来看看啊 哪位高手可以帮我看看这是什么问题? 怎么解决?
String subOrder1 = order.substring(0, order.lastIndexOf("-"));
String subOrder2 = order.substring(order.lastIndexOf("-") + 1);
System.out.println("subOrder1:"+subOrder1);
System.out.println( "subOrder2:"+subOrder2);
String sql="select dp.*,db.* from d_category_product dcp join d_product dp on(dcp.product_id=dp.id) " +
" join d_book db on(dp.id=db.id)" +
" where dcp.cat_id=? limit ? ? order by ? ? ";
Connection con = DBUtil.getCon();
PreparedStatement pst= con.prepareStatement(sql);
pst.setInt(1, id);
pst.setInt(2, begin);
pst.setInt(3, size);
pst.setString(4, subOrder1);
pst.setString(5, subOrder2);
" join d_book db on(dcp.id=db.id)" +
" where dcp.cat_id=? limit ? ? order by ? ? ";细节决定成败,两个c