jsp的图书购物系统

				
				
				
								if(session.getAttribute("username")==null)
				{
				  response.sendRedirect("login.html");
				}
				%>
								String tel = request.getParameter("address");
				tel = new String(tel.getBytes("ISO8859-1"));
				String address = request.getParameter("tel");
				address = new String(address.getBytes("ISO8859-1"));
				String sqlinsert="update 订单 set user_address='"+address+"',user_tel='"+tel+"' where user_name='"+session.getAttribute("username")+"'";
				workM.executeQuery(sqlinsert);
				%>
				
				
				[详细资料]
				
				
				
				
				订单确认
				
				  
				    
				      订单信息
				    
				  
				  
				    姓名:
				    
				  
				  
				    住址：
				    
				      
				    
				  
				  
				    电话:
				    
				
				
				    
				  
				
				      
				  您选购了以下书籍：
				  
				    
				      
				        购买数量
				      
				      
				        书名
				      
				      
				        单价（元）
				      
				      
				        总价格（元）
				      
				    
										//价格
					double g_price,total_price;
					g_price=0;
					total_price=0;
					//********
					String sqlList="select * from 订单 where user_name='"+session.getAttribute("username")+"'";
					ResultSet RSList=workM.executeQuery(sqlList);
					try
					{
					  while(RSList.next())
					  {
					   int b_num;
					   b_num=RSList.getInt("book_number");
					%>
				    
				      
				          
				          
				          
				      
					  					   String sqlBook="select * from 书籍信息 where id="+RSList.getInt("book_id");
					   ResultSet RSBook=workM.executeQuery(sqlBook);
					   while(RSBook.next())
					   {
					  %>
				      
				        
				      
				      
					  					   double price;
					   price=RSBook.getDouble("price");
					  %>
				        ¥
				      
				      
				        ¥
				      
					   					   g_price=g_price+(double)price*b_num;
					   }%>
				    
										 }
					}
					catch(Exception e)
					{
					}
					%>
					 
				      
				        书籍价格
				      
				      
				        ¥
				      
				    
				    
				       
				        
				        运输费用
				      
				      
				        ¥5.00
				      
				    
				    
				      
				        总费用
				      
				      
				        ¥
				      
				    
					 
				      
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