一个简单的web商城系统，小校园项目，基于Java 的springboot项目+源代码+文档说明

package com.smallschool.controller; import com.smallschool.entity.*; import com.smallschool.service.*; import org.apache.tomcat.util.codec.binary.Base64; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.*; import javax.servlet.http.HttpServletRequest; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Map; /** * 用来提供与商品订单有关的服务 */ @Controller @RequestMapping("/snackOrder") public class SnackOrderController { @Autowired UserRepository userRepository; @Autowired CartRepository cartRepository; @Autowired SnackRepository snackRepository; @Autowired DeliverRepository deliverRepository; @Autowired SnackOrderRepository snackOrderRepository; @RequestMapping("/toShopCart") public String shopcart(Map map, HttpServletRequest request){ List<CartEntity> cart_list = cartRepository.findAll(); List<SnackEntity> snack_list =new ArrayList<>(); SnackEntity snackEntity =null; Base64 encoder = new Base64(); for (CartEntity cart : cart_list) { snackEntity=snackRepository.findById(cart.getSnackId()).orElse(null); String pic ="data:image/jpeg;base64,"+encoder.encodeBase64String(snackEntity.getSnackPic()); snackEntity.setPicString(pic); snack_list.add(snackEntity); } if (request.getSession().getAttribute("address") !=null){ map.put("user_list",request.getSession().getAttribute("address")); }else { UserEntity user = (UserEntity) request.getSession().getAttribute("user"); map.put("user_list",user); } map.put("cart_list",cart_list); map.put("snack_list",snack_list); return "shopcart"; } @RequestMapping("/changeDeliver") public String changeDeliver(Map map ,HttpServletRequest request){ // List<UserEntity> user_list = userRepository.findAll(); UserEntity user = (UserEntity) request.getSession().getAttribute("user"); List<DeliverEntity> deliverEntityList = deliverRepository.findByUserPhone(user.getPhone()); map.put("deliver_list",deliverEntityList); return "deliver"; } /* * 如果切换默认地址，则将该地址信息存入session * */ @RequestMapping("/changeAddress/{deliverId}") public String changeAddress(@PathVariable("deliverId") String deliverId,Map map,HttpServletRequest request){ DeliverEntity deliverEntity =deliverRepository.findById(deliverId).orElse(null); request.getSession().setAttribute("address",deliverEntity); return "redirect:/snackOrder/toShopCart"; } @RequestMapping("/payment") public String payment(@RequestParam("totalPrices") String totalPrice, @RequestParam("receiveUser") String receiveUser, @RequestParam("receiveAddress") String receiveAddress, @RequestParam("receivePhone") String receivePhone,Model model,HttpServletRequest request){ model.addAttribute("user",receiveUser); model.addAttribute("phone",receivePhone); model.addAttribute("address",receiveAddress); model.addAttribute("totalPrice",totalPrice); request.getSession().setAttribute("receiveUser",receiveUser); request.getSession().setAttribute("receivePhone",receivePhone); request.getSession().setAttribute("receiveAddress",receiveAddress); request.getSession().setAttribute("totalPrice",totalPrice); // System.out.println(totalPrice); return "payment"; } @RequestMapping("/payments") public String payment(Model model,HttpServletRequest request){ model.addAttribute("user",request.getSession().getAttribute("receiveUser")); model.addAttribute("phone",request.getSession().getAttribute("receivePhone")); model.addAttribute("address",request.getSession().getAttribute("receiveAddress")); model.addAttribute("totalPrice",request.getSession().getAttribute("totalPrice")); // System.out.println(totalPrice); return "payment"; } @RequestMapping("/checkout") public String checkout(@RequestParam("totalPrices") String totalPrice, @RequestParam("receiveUser") String receiveUser, @RequestParam("receiveAddress") String receiveAddress, @RequestParam("receivePhone") String receivePhone, @RequestParam("deliverTime") String deliverTime, @RequestParam("note") String note,HttpServletRequest request,Map map){ SnackOrderEntity snackOrderEntity=new SnackOrderEntity(); Date date =new Date(); SimpleDateFormat sdf =new SimpleDateFormat("yyyyMMddHHmmss"); String orderSnackId =sdf.format(date); UserEntity userEntity= (UserEntity)request.getSession().getAttribute("user"); snackOrderEntity.setOrderSnackId(orderSnackId); snackOrderEntity.setUserId(userEntity.getUserId()); snackOrderEntity.setAddress(receiveAddress); snackOrderEntity.setName(receiveUser); snackOrderEntity.setPhone(receivePhone); snackOrderEntity.setOrderTime(date); snackOrderEntity.setTotalCost(Float.parseFloat(totalPrice)); snackOrderEntity.setDeliverTime(deliverTime); snackOrderEntity.setNote(note); snackOrderRepository.save(snackOrderEntity); cartRepository.deleteAll(); map.put("orderSnackId",orderSnackId); map.put("deliverTime",deliverTime); return "buy-success"; } @RequestMapping("/toOrder") public String order(Map map){ List<SnackOrderEntity> snack_order_list = snackOrderRepository.findAll(); map.put("snack_order_list",snack_order_list); return "snack_order"; } }