String sql="insert into allorder values('" + orderid + "','" + bookid +"','" + amount + "','" + username + "')"; int result=stmt.executeUpdate(sql); if(result==1) response.sendRedirect("index.jsp"); else response.sendRedirect("detail.jsp");

String condition="delete from allorder where id='"+ orderid+ "'"; int result=stmt.executeUpdate(condition); if(result==1) response.sendRedirect("index.jsp"); else out.println("shopCar.jsp");

与delete，insert差不多 select [code] <% while (rs.next()){ String amount=rs.getString("amount"); String orderid=rs.getString("id"); String bookname=rs.getString("name"); String price=rs.getString("price"); String picture=rs.getString("pic"); //out.println("\tshuliang"+amount); %> <tr><td><%=orderid %></td><td><%=picture %></td><td><%=bookname %></td><td><%=price %></td><td><%=amount %></td><td><table><tr><td><input type="button" value="删除" onclick="window.location.href='delete.jsp?orderid=<%=orderid %>'"></td></tr></table></td></tr> <% } // 关闭连接 stmt.close();// 关闭命令对象连接 con.close();// 关闭数据库连接 } catch (SQLException e) { e.printStackTrace(); out.println("数据库连接错误"); System.exit(0); } //数据库连接完成 %> </table>