基于javaweb的JSP+Servlet网上图书商城(java+servlet+jsp+mysql)

运行环境

Java≥8、MySQL≥5.7、Tomcat≥8

开发工具

eclipse/idea/myeclipse/sts等均可配置运行

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

功能说明

基于javaweb的JSP+Servlet网上图书商城(java+servlet+jsp+mysql)

后台管理员：
http://localhost:8080/adminjsps/login.jsp
admin 123456

前台用户：
http://localhost:8080
user1 123456
user2 123456

项目采用MVC三层架构，使用（JSP + Sevlvet + JavaBean)技术
前台功能模块有：登录注册(校验)
加入购物车
订单管理（下订单和确认收货或者取消）
后台功能模块：图书分级管理（一级和二级）
图书管理(图书增删改查)
订单管理

用到的技术
开发环境：MyEclipse, Tomcat, Mysql
后台技术： JSP, Servlet, JavaBean
前端技术： JSP, CSS, HTML5, CSS3, jQuery, Javascript

		errors.put("email", "Email格式错误！");
	} else if(!userService.ajaxValidateEmail(email)) {
		errors.put("email", "Email已被注册！");
	}
	//5. 验证码校验
	String verifyCode = formUser.getVerifyCode();
	String vcode = (String) session.getAttribute("vCode");
	if(verifyCode == null || verifyCode.trim().isEmpty()) {
		errors.put("verifyCode", "验证码不能为空！");
	} else if(!verifyCode.equalsIgnoreCase(vcode)) {
		errors.put("verifyCode", "验证码错误！");
	}
	return errors;
}



//修改密码　
public String updatePassword(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
	User formUser = CommonUtils.toBean(req.getParameterMap(), User.class);
	User user = (User)req.getSession().getAttribute("sessionUser");
	if(user == null) {
		req.setAttribute("msg", "您还没有登录！");
		return "f:/jsps/user/login.jsp";
	}
	try {
		userService.updatePassword(user.getUid(), formUser.getNewpass(), 
				formUser.getLoginpass());
		req.setAttribute("msg", "修改密码成功");
		req.setAttribute("code", "success");
		return "f:/frontpages/msg1.jsp";
	} catch (UserException e) {
		req.setAttribute("msg", e.getMessage());//保存异常信息到request
		req.setAttribute("user", formUser);//为了回显
		return "f:/frontpages/user/pwd.jsp";
	}
}

//退出功能

// 用户名是否注册校验
public String ajaxValidateLoginname(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
	String loginname = req.getParameter("loginname");
	boolean b = userService.ajaxValidateLoginname(loginname);
	resp.getWriter().print(b);
	return null;
}

//Email是否注册校验
public String ajaxValidateEmail(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
	String email = req.getParameter("email");
	boolean b = userService.ajaxValidateEmail(email);
	resp.getWriter().print(b);
	return null;
}

//图片验证码是否正确校验
public String ajaxValidateVerifyCode(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
	String verifyCode = req.getParameter("verifyCode");
	String vcode = (String) req.getSession().getAttribute("vCode");
	boolean b = verifyCode.equalsIgnoreCase(vcode);
	resp.getWriter().print(b);
	return null;
}

//注册功能
public String regist(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {

	User formUser = CommonUtils.toBean(req.getParameterMap(), User.class);//拿到表单数据
	//校验之, 如果校验失败，保存错误信息，返回到regist.jsp显示
	Map<String,String> errors = validateRegist(formUser, req.getSession());
	if(errors.size() > 0) {
		req.setAttribute("form", formUser);
		req.setAttribute("errors", errors);
		return "f:/frontpages/user/register.jsp";
	}
	//使用service完成业务
	userService.regist(formUser);
	//保存成功信息，转发到msg.jsp显示！
	req.setAttribute("code", "success");
	req.setAttribute("msg", "注册成功！");
	return "f:/frontpages/msg.jsp";
}

//注册校验	 * 对表单的字段进行逐个校验，如果有错误，使用当前字段名称为key，错误信息为value，保存到map中
private Map<String,String> validateRegist(User formUser, HttpSession session) {

	
	// 删除一级分类
	public String deleteParent(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		String cid = req.getParameter("cid");
		int cnt = categoryService.findChildrenCountByParent(cid);
		if(cnt > 0) {
			req.setAttribute("msg", "该分类下还有子分类，不能删除！");
			return "f:/adminjsps/msg.jsp";
		} else {
			categoryService.delete(cid);
			return findAll(req, resp);
		}
	}
	
	// 删除2级分类
	public String deleteChild(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		String cid = req.getParameter("cid");
		int cnt = bookService.findBookCountByCategory(cid);
		if(cnt > 0) {
			req.setAttribute("msg", "该分类下还存在图书，不能删除！");
			return "f:/adminjsps/msg.jsp";
		} else {
			categoryService.delete(cid);
			return findAll(req, resp);
		}
	}
}

//我的订单
public String myOrders(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
	int pc = getPc(req);
	String url = getUrl(req);
	User user = (User)req.getSession().getAttribute("sessionUser");
	PageBean<Order> pb = orderService.myOrders(user.getUid(), pc);
	pb.setUrl(url);
	req.setAttribute("pb", pb);
	return "f:/frontpages/order/list.jsp";
}

/*生成订单*/
public String createOrder(HttpServletRequest req, HttpServletResponse resp)
		throws ServletException, IOException {
	String cartItemIds = req.getParameter("cartItemIds");
	List<CartItem> cartItemList = cartItemService.loadCartItems(cartItemIds);
	if(cartItemList.size() == 0) {
		req.setAttribute("code", "error");
		req.setAttribute("msg", "您没有选择要购买的图书，不能下单！");
		return "f:/frontpages/msg1.jsp";
	}

	Order order = new Order();
	order.setOid(CommonUtils.uuid());//设置主键
	order.setOrdertime(String.format("%tF %<tT", new Date()));//下单时间
	order.setStatus(1);//设置状态，1表示未付款
	order.setAddress(req.getParameter("address"));//设置收货地址
	User owner = (User)req.getSession().getAttribute("sessionUser");
	order.setOwner(owner);//设置订单所有者

	BigDecimal total = new BigDecimal("0");
	for(CartItem cartItem : cartItemList) {
		total = total.add(new BigDecimal(cartItem.getSubtotal() + ""));
	}
	order.setTotal(total.doubleValue());//设置总计

	List<OrderItem> orderItemList = new ArrayList<OrderItem>();
	for(CartItem cartItem : cartItemList) {
		OrderItem orderItem = new OrderItem();
		orderItem.setOrderItemId(CommonUtils.uuid());//设置主键
		orderItem.setQuantity(cartItem.getQuantity());
		orderItem.setSubtotal(cartItem.getSubtotal());

	return;
}
// 校验图片的尺寸
// 保存上传的图片，把图片new成图片对象：Image、Icon、ImageIcon、BufferedImage、ImageIO
//获取真实路径
String savepath = this.getServletContext().getRealPath("/book_img");
// 创建目标文件
File destFile = new File(savepath, filename);
// 保存文件
try {
	fileItem.write(destFile);//它会把临时文件重定向到指定的路径，再删除临时文件
} catch (Exception e) {
	throw new RuntimeException(e);
}
// 校验尺寸
// 1. 使用文件路径创建ImageIcon
ImageIcon icon = new ImageIcon(destFile.getAbsolutePath());
// 2. 通过ImageIcon得到Image对象
Image image = icon.getImage();
// 3. 获取宽高来进行校验
if(image.getWidth(null) > 350 || image.getHeight(null) > 350) {
	error("您上传的图片尺寸超出了350*350！", request, response);
	//destFile.delete();//删除图片
	return;
}
// 把图片的路径设置给book对象
book.setImage_w("book_img/" + filename);
// 获取文件名
fileItem = fileItemList.get(2);//获取小图
filename = fileItem.getName();
// 截取文件名，因为部分浏览器上传的绝对路径
index = filename.lastIndexOf("\\");
if(index != -1) {
	filename = filename.substring(index + 1);
}
// 给文件名添加uuid前缀，避免文件同名现象
filename = CommonUtils.uuid() + "_" + filename;
// 校验文件名称的扩展名
if(!filename.toLowerCase().endsWith(".jpg")) {
	error("上传的图片扩展名必须是JPG", request, response);
	return;
}
// 校验图片的尺寸
// 保存上传的图片，把图片new成图片对象：Image、Icon、ImageIcon、BufferedImage、ImageIO
//获取真实路径
savepath = this.getServletContext().getRealPath("/book_img");
//创建目标文件

public class CartItemServlet extends MyServlet {

	private CartItemService cartItemService = new CartItemService();

	//显示多个CartItem
	public String loadCartItems(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		String cartItemIds = req.getParameter("cartItemIds");
		double total = Double.parseDouble(req.getParameter("total"));
		List<CartItem> cartItemList = cartItemService.loadCartItems(cartItemIds);
		req.setAttribute("cartItemList", cartItemList);
		req.setAttribute("total", total);
		req.setAttribute("cartItemIds", cartItemIds);
		return "f:/frontpages/cart/showitem.jsp";
	}
	
	public String updateQuantity(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		String cartItemId = req.getParameter("cartItemId");
		int quantity = Integer.parseInt(req.getParameter("quantity"));
		CartItem cartItem = cartItemService.updateQuantity(cartItemId, quantity);
		// 给客户端返回一个json对象
		StringBuilder sb = new StringBuilder("{");
		sb.append("\"quantity\"").append(":").append(cartItem.getQuantity());
		sb.append(",");
		sb.append("\"subtotal\"").append(":").append(cartItem.getSubtotal());
		sb.append("}");
		System.out.println(sb);
		resp.getWriter().print(sb);
		return null;
	}
	
	// 批量删除功能
	public String batchDelete(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		String cartItemIds = req.getParameter("cartItemIds");
		System.out.println(cartItemIds);
		cartItemService.batchDelete(cartItemIds);
		return myCart(req, resp);
	}
	
	//添加购物车条目
	public String add(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		Map map = req.getParameterMap();
		CartItem cartItem = CommonUtils.toBean(map, CartItem.class);
		Book book = CommonUtils.toBean(map, Book.class);
		User user = (User)req.getSession().getAttribute("sessionUser");

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项目链接：
https://javayms.github.io?id=262023280609201et
https://javayms.pages.dev?id=262023280609201et