基于javaweb的SSM网上电商系统(java+ssm+mysql+tomcat+jsp)

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SSM网上电商系统(java+ssm+mysql+tomcat+jsp)

一、项目简述

功能：本系统分用户前台和管理员后台。 前台展示+后台管理，前台界面可实现用户登录，用户注 册，商品展示，商品明细展示，用户信息修改，密码修 改，购物车添加，商品购买，商品结算，订单查询，购物 车查询，后台管理可实现商品管理，订单管理，用户管理

二、项目运行

环境配置： Jdk1.8 + Tomcat8.5 + mysql + Eclispe (IntelliJ IDEA,Eclispe,MyEclispe,Sts 都支持)

项目技术： JSP +Spring + SpringMVC + MyBatis + html+ css + JavaScript + JQuery + Ajax + layui等等。

/**
 * 前台相关接口
 */
@Controller
@RequestMapping("/index")
public class IndexController{
	
	@Autowired
	private GoodService goodService;
	@Autowired
	private TypeService typeService;
	

	/**
	 * 首页
	 * @return
	 */
	@GetMapping("/index")
	public String index(HttpServletRequest request){
		request.setAttribute("flag", 1);
		// 今日推荐
		List<Goods> todayList = goodService.getListByTopType(Tops.TYPE_TODAY, 1, 6); // 取前6个

	return "/admin/admin_reset.jsp";
}

/**
 * 管理员密码重置
 * @return
 */
@PostMapping("/adminReset")
public String adminReset(int id, String password, HttpServletRequest request,
		@RequestParam(required=false, defaultValue="1") int page) {
	adminService.update(id, password);
	return "redirect:adminList?page="+page;
}

/**
 * 管理员添加
 * @return
 */
@PostMapping("/adminSave")
public String adminSave(Admins admin, HttpServletRequest request, 
		@RequestParam(required=false, defaultValue="1") int page) {
	if (Objects.nonNull(adminService.getByUsername(admin.getUsername()))) {
		request.setAttribute("msg", "用户名已存在!");
		return "/admin/admin_add.jsp";
	}
	adminService.add(admin);
	return "redirect:adminList?flag=5&page="+page;
}

/**
 * 管理员删除
 * @return
 */
@GetMapping("/adminDelete")
public String adminDelete(int id, 
		@RequestParam(required=false, defaultValue="1") int page) {
	adminService.delete(id);
	return "redirect:adminList?flag=5&page="+page;
}

   /**
    * 图片上传
    * @throws Exception 
    */
   @PostMapping("upload")
   public @ResponseBody Map<String, Object> upload(MultipartFile imgFile) throws Exception {
   	Map<String, Object> map = new HashMap<>();
   	if (Objects.nonNull(imgFile) && !imgFile.isEmpty()) {
   		map.put("error", 0);

    // 设置居中样式
    dataStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 水平居中
    dataStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); // 垂直居中
    // 设置数据字体
    Font dataFont = wb.createFont();
    dataFont.setFontHeightInPoints((short) 12); // 字体高度
    dataFont.setFontName("宋体"); // 字体
    dataStyle.setFont(dataFont);
    // 遍历集合数据，产生数据行
    Iterator<T> it = dataList.iterator();
    int index = 0;
    while (it.hasNext()) {
        index++;// 0号位被占用 所以+1
        row = sheet.createRow(index);
        // 为序号赋值
        HSSFCell sequenceCellValue = row.createCell(0);// 序号值永远是第0列
        sequenceCellValue.setCellValue(index);
        sequenceCellValue.setCellStyle(dataStyle);
        sheet.autoSizeColumn(0);
        T t = (T) it.next();
        // 利用反射，根据传过来的字段名数组，动态调用对应的getXxx()方法得到属性值
        for (int i = 0; i < fieldArray.length; i++) {
            HSSFCell dataCell = row.createCell(i + 1);
            dataCell.setCellStyle(dataStyle);
            sheet.autoSizeColumn(i + 1);
            String fieldName = fieldArray[i];
            String getMethodName = "get" + fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);// 取得对应getXxx()方法
            Class<? extends Object> tCls = t.getClass();// 泛型为Object以及所有Object的子类
            Method getMethod = tCls.getMethod(getMethodName, new Class[] {});// 通过方法名得到对应的方法
            Object value = getMethod.invoke(t, new Object[] {});// 动态调用方,得到属性值
            if (value != null) {
                dataCell.setCellValue(value.toString());// 为当前列赋值
            }
        }
    }

    OutputStream outputStream = response.getOutputStream();// 打开流
    wb.write(outputStream);// HSSFWorkbook写入流
    wb.close();// HSSFWorkbook关闭
    outputStream.flush();// 刷新流
    outputStream.close();// 关闭流
    return wb;
}
// XSSFCellStyle.ALIGN_CENTER 居中对齐
// XSSFCellStyle.ALIGN_LEFT 左对齐
// XSSFCellStyle.ALIGN_RIGHT 右对齐

public class IndexInterceptor extends HandlerInterceptorAdapter{

	@Autowired
	private TypeService typeService;
	@Autowired
	private CartService cartService;
	
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
		request.setAttribute("typeList", typeService.getList()); // 为所有页面设置类目列表
		// 拦截指定路径
		String uri = request.getRequestURI();
		if(uri.contains("index/cart") || uri.contains("index/order") || uri.contains("index/my")) {
			Object user = request.getSession().getAttribute("user");
			if (Objects.isNull(user)) {
				response.sendRedirect("login");
				return false;
			}
		} // 默认放过
		return true;
	}

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
			ModelAndView modelAndView) throws Exception {
		// 拦截指定路径
		String uri = request.getRequestURI();
		if(uri.contains("index/cart")) { // 购物车相关请求后 更新session
			Users user = (Users) request.getSession().getAttribute("user");
			request.getSession().setAttribute("cartCount", cartService.getCount(user.getId()));
		}
		super.postHandle(request, response, handler, modelAndView);
	}

}
package com.config;

	Users user = (Users) session.getAttribute("user");
	return cartService.save(goodId, user.getId());
}

/**
 * 添加数量
 */
@PostMapping("/cartAdd")
public @ResponseBody boolean cartAdd(int id){
	return cartService.add(id);
}

/**
 * 减少数量
 */
@PostMapping("/cartLess")
public @ResponseBody boolean cartLess(int id){
	return cartService.less(id);
}

/**
 * 删除
 */
@PostMapping("/cartDelete")
public @ResponseBody boolean cartDelete(int id){
	return cartService.delete(id);
}


/**
 * 查看订单
 * @return
 * @throws UnsupportedEncodingException 
 */
@GetMapping("/order")
public String order(HttpServletRequest request, HttpSession session,
		@RequestParam(required=false, defaultValue="1")int page, 
		@RequestParam(required=false, defaultValue="6")int size) throws UnsupportedEncodingException{
	Users user = (Users) session.getAttribute("user");
	request.setAttribute("orderList", orderService.getListByUserid(user.getId(), page, size));
	request.setAttribute("pageHtml", PageUtil.getPageHtml(request, orderService.getCountByUserid(user.getId()), page, size));
	return "/index/order.jsp";
}

/**
 * 直接购买
 * @return
 * @throws MyException 
 */
@PostMapping("/orderAdd")

/**
 * 前台拦截器
 */
public class IndexInterceptor extends HandlerInterceptorAdapter{

	@Autowired
	private TypeService typeService;
	@Autowired
	private CartService cartService;
	
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
		request.setAttribute("typeList", typeService.getList()); // 为所有页面设置类目列表
		// 拦截指定路径
		String uri = request.getRequestURI();
		if(uri.contains("index/cart") || uri.contains("index/order") || uri.contains("index/my")) {
			Object user = request.getSession().getAttribute("user");
			if (Objects.isNull(user)) {
				response.sendRedirect("login");
				return false;
			}
		} // 默认放过
		return true;
	}

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
			ModelAndView modelAndView) throws Exception {
		// 拦截指定路径
		String uri = request.getRequestURI();
		if(uri.contains("index/cart")) { // 购物车相关请求后 更新session
			Users user = (Users) request.getSession().getAttribute("user");
			request.getSession().setAttribute("cartCount", cartService.getCount(user.getId()));
		}
		super.postHandle(request, response, handler, modelAndView);
	}

}
package com.config;

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项目链接：
https://javayms.github.io?id=351422292105200fh
https://javayms.pages.dev?id=351422292105200fh