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摘要

在高校师生日常学习与生活中，书籍、电子设备、生活用品、宿舍好物等物品的流通需求十分旺盛。传统的闲置物品流转多以线下跳蚤市场或QQ群、朋友圈零散发布为主，存在信息不对称、检索不便、可信度低、交易缺乏规范等问题，已难以满足校园场景下高效、便捷、安全的二手交易需求。为此，本文设计并实现了一套基于Spring Boot与Vue的校园二手交易网站。

本系统采用前后端分离架构进行开发：后端以Spring Boot为核心框架，基于MyBatis持久层框架与MySQL关系型数据库进行数据存储，引入Redis缓存中间件优化热点数据访问，并使用Druid连接池、Lombok、FastJSON等组件提升开发效率与系统稳定性；前端基于Vue框架与Element UI组件库搭建交互页面，配合路由管理与响应式布局，实现良好的用户体验。系统面向普通学生用户与管理员两类角色，涵盖用户注册登录、二手商品发布、按分类与关键词搜索、商品详情浏览、收藏与下单、订单管理、留言评论、个人中心、分类管理、用户管理、商品审核、订单监控等完整功能模块，构建出覆盖"发布—浏览—下单—成交—售后"全链路的校园二手交易平台。

经测试验证，系统功能完整、运行稳定，能够有效提升校园闲置资源的流转效率，为师生提供一个安全、便捷、本地化的二手交易平台，具有较好的实际应用价值。

关键词：校园二手交易；Spring Boot；Vue；MySQL；前后端分离

关键代码

package com.second.hand.trading.server.controller; import com.second.hand.trading.server.enums.ErrorMsg; import com.second.hand.trading.server.model.AdminModel; import com.second.hand.trading.server.model.IdleItemModel; import com.second.hand.trading.server.model.UserModel; import com.second.hand.trading.server.service.AdminService; import com.second.hand.trading.server.service.IdleItemService; import com.second.hand.trading.server.service.OrderService; import com.second.hand.trading.server.service.UserService; import com.second.hand.trading.server.vo.ResultVo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import javax.servlet.http.HttpSession; import javax.validation.constraints.NotEmpty; import javax.validation.constraints.NotNull; @RestController @RequestMapping("admin") public class AdminController { @Autowired private AdminService adminService; @Autowired private IdleItemService idleItemService; @Autowired private OrderService orderService; @Autowired private UserService userService; @GetMapping("login") public ResultVo login(@RequestParam("accountNumber") @NotNull @NotEmpty String accountNumber, @RequestParam("adminPassword") @NotNull @NotEmpty String adminPassword, HttpSession session){ AdminModel adminModel=adminService.login(accountNumber,adminPassword); if (null == adminModel) { return ResultVo.fail(ErrorMsg.EMAIL_LOGIN_ERROR); } session.setAttribute("admin",adminModel); return ResultVo.success(adminModel); } @GetMapping("loginOut") public ResultVo loginOut( HttpSession session){ session.removeAttribute("admin"); return ResultVo.success(); } @GetMapping("list") public ResultVo getAdminList(HttpSession session, @RequestParam(value = "page",required = false) Integer page, @RequestParam(value = "nums",required = false) Integer nums){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } int p=1; int n=8; if(null!=page){ p=page>0?page:1; } if(null!=nums){ n=nums>0?nums:8; } return ResultVo.success(adminService.getAdminList(p,n)); } @PostMapping("add") public ResultVo addAdmin(HttpSession session, @RequestBody AdminModel adminModel){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } if(adminService.addAdmin(adminModel)){ return ResultVo.success(); } return ResultVo.fail(ErrorMsg.PARAM_ERROR); } @GetMapping("idleList") public ResultVo idleList(HttpSession session, @RequestParam("status") @NotNull @NotEmpty Integer status, @RequestParam(value = "page",required = false) Integer page, @RequestParam(value = "nums",required = false) Integer nums){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } int p=1; int n=8; if(null!=page){ p=page>0?page:1; } if(null!=nums){ n=nums>0?nums:8; } return ResultVo.success(idleItemService.adminGetIdleList(status,p,n)); } @GetMapping("updateIdleStatus") public ResultVo updateIdleStatus(HttpSession session, @RequestParam("id") @NotNull @NotEmpty Long id, @RequestParam("status") @NotNull @NotEmpty Integer status ){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } IdleItemModel idleItemModel=new IdleItemModel(); idleItemModel.setId(id); idleItemModel.setIdleStatus(status.byteValue()); if(idleItemService.updateIdleItem(idleItemModel)){ return ResultVo.success(); } return ResultVo.fail(ErrorMsg.SYSTEM_ERROR); } @GetMapping("orderList") public ResultVo orderList(HttpSession session, @RequestParam(value = "page",required = false) Integer page, @RequestParam(value = "nums",required = false) Integer nums){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } int p=1; int n=8; if(null!=page){ p=page>0?page:1; } if(null!=nums){ n=nums>0?nums:8; } return ResultVo.success(orderService.getAllOrder(p,n)); } @GetMapping("deleteOrder") public ResultVo deleteOrder(HttpSession session, @RequestParam("id") @NotNull @NotEmpty Long id){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } if(orderService.deleteOrder(id)){ return ResultVo.success(); } return ResultVo.fail(ErrorMsg.SYSTEM_ERROR); } @GetMapping("userList") public ResultVo userList(HttpSession session, @RequestParam(value = "page",required = false) Integer page, @RequestParam(value = "nums",required = false) Integer nums, @RequestParam("status") @NotNull @NotEmpty Integer status){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } int p=1; int n=8; if(null!=page){ p=page>0?page:1; } if(null!=nums){ n=nums>0?nums:8; } return ResultVo.success(userService.getUserByStatus(status,p,n)); } @GetMapping("updateUserStatus") public ResultVo updateUserStatus(HttpSession session, @RequestParam("id") @NotNull @NotEmpty Long id, @RequestParam("status") @NotNull @NotEmpty Integer status){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } UserModel userModel=new UserModel(); userModel.setId(id); userModel.setUserStatus(status.byteValue()); if(userService.updateUserInfo(userModel)) return ResultVo.success(); return ResultVo.fail(ErrorMsg.SYSTEM_ERROR); } // 按订单闲置物品名称查询 @GetMapping("queryIdle") public ResultVo queryIdle(@RequestParam(value = "findValue",required = false) String findValue, @RequestParam(value = "page",required = false) Integer page, @RequestParam(value = "nums",required = false) Integer nums, @RequestParam("status") @NotNull @NotEmpty Integer status){ if(null==findValue){ findValue=""; } int p=1; int n=8; if(null!=page){ p=page>0?page:1; } if(null!=nums){ n=nums>0?nums:8; } System.out.println(findValue + " " + page + " " + nums + " " + status); if(status == 1) return ResultVo.success(idleItemService.findIdleItem(findValue,p,n)); return ResultVo.success(idleItemService.findIdleItem1(findValue,status,p,n)); } // 按订单号查询订单 @GetMapping("queryOrder") public ResultVo queryOrder(HttpSession session, @RequestParam(value = "page",required = false) Integer page, @RequestParam(value = "nums",required = false) Integer nums, @RequestParam(value = "searchValue",required = false) String searchValue){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } int p=1; int n=8; if(null!=page){ p=page>0?page:1; } if(null!=nums){ n=nums>0?nums:8; } // System.out.println("---------------------" + searchValue + "--------------"); if(null == searchValue || "".equals(searchValue)) return ResultVo.success(orderService.getAllOrder(p,n)); return ResultVo.success(orderService.findOrderByNumber(searchValue, p, n)); } // 根据用户账号来查找信息 @GetMapping("queryUser") public ResultVo queryUser(HttpSession session, @RequestParam(value = "searchValue",required = false) String searchValue, @RequestParam(value = "mode",required = false) Integer mode, @RequestParam(value = "page",required = false) Integer page, @RequestParam(value = "nums",required = false) Integer nums){ if(session.getAttribute("admin")==null){ return ResultVo.fail(ErrorMsg.COOKIE_ERROR); } int p=1; int n=8; if(null!=page){ p=page>0?page:1; } if(null!=nums){ n=nums>0?nums:8; } // return ResultVo.success(userService.getUserByStatus(0,p,n)); if(mode == 1){ if(null == searchValue || "".equals(searchValue)){ return ResultVo.success(userService.getUserByStatus(0,p,n)); }else{ return ResultVo.success(userService.getUserByNumber(searchValue,mode)); } }else if(mode == 2){ if(null == searchValue || "".equals(searchValue)){ return ResultVo.success(userService.getUserByStatus(1,p,n)); }else{ return ResultVo.success(userService.getUserByNumber(searchValue,mode)); } }else return ResultVo.success(adminService.getAdminList(p,n)); } }

项目截图

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