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>