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闲置物品交易平台
目录
基于java的大学生闲置物品交易平台设计与实现
一、前言
二、系统功能设计
三、系统实现
四、数据库设计
1、实体ER图
五、核心代码
六、论文参考
七、最新计算机毕设选题推荐
八、源码获取
博主介绍：✌️大厂码农|毕设布道师，阿里云开发社区乘风者计划专家博主，CSDN平台Java领域优质创作者，专注于大学生项目实战开发、讲解和毕业答疑辅导。✌️
主要项目：小程序、SpringBoot、SSM、Vue、Html、Jsp、Nodejs等设计与开发。
🍅文末获取源码联系🍅
基于java的大学生闲置物品交易平台设计与实现
一、前言
在设计大学生闲置物品交易平台时，功能模块充分融合了用户与管理员的实际需求，实现了多元化且全面的闲置物品交易功能。文章介绍了微信小程序大学生闲置物品交易平台的系统分析部分，包括可行性分析等，系统设计部分主要介绍了系统功能设计和数据库设计。本微信小程序大学生闲置物品交易平台有管理员，卖家，用户。管理员功能有个人中心，学生管理，卖家管理，广场管理，商品类型管理，商品信息管理，系统管理等。学生可以购买商品，卖家可以发布商品。因而具有一定的实用性。本微信小程序大学生闲置物品交易平台，后台采用SSM框架，MYSQL数据库设计开发，微信小程序用微信开发者工具开发，充分保证系统的稳定性。系统具有界面清晰、操作简单，功能齐全的特点，使得微信小程序大学生闲置物品交易平台管理工作系统化、规范化。本系统的使用使管理人员从繁重的工作中解脱出来，实现无纸化办公，能够有效的提高微信小程序大学生闲置物品交易平台管理效率。
二、系统功能设计
三、系统实现
微信小程序大学生闲置物品交易平台的系统管理员可以对学生信息修改删除以及查询操作。具体界面的展示如图5.1所示。
图5.1 学生信息管理界面
微信小程序大学生闲置物品交易平台的系统管理员可以对学生信息修改删除以及查询操作。具体界面的展示如图5.1所示。
图5.1 学生信息管理界面
系统管理员可以对广场信息进行添加，修改，删除以及查询操作。界面如下图所示：
图5.3 广场信息管理界面
用户注册登录后可以在小程序首页看到相关信息和链接，可以搜索和点击操作。界面如下图所示：
图5.5 首页界面
用户可以对商品信息收藏，购买以及评论操作。界面如下图所示：
图5.6 商品信息界面
我的里面关于各项信息的连接，点击就可以跳转到对应的页面。界面如下图所示：
图5.7 我的界面
四、数据库设计
1、实体ER图
商品类型信息实体属性图如图4.13所示：
图4.13 商品类型信息实体属性图
收藏信息实体属性图如图4.14所示：
图4.14 收藏信息实体属性图
表4.1 地址
表4.2 购物车表
表4.3 广场评论表
表4.4 商品信息评论表
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五、核心代码
package com.controller; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Calendar; import java.util.Map; import java.util.HashMap; import java.util.Iterator; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import com.utils.ValidatorUtils; import org.apache.commons.lang3.StringUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.format.annotation.DateTimeFormat; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import com.baomidou.mybatisplus.mapper.EntityWrapper; import com.baomidou.mybatisplus.mapper.Wrapper; import com.annotation.IgnoreAuth; import com.entity.BumenEntity; import com.entity.view.BumenView; import com.service.BumenService; import com.service.TokenService; import com.utils.PageUtils; import com.utils.R; import com.utils.MD5Util; import com.utils.MPUtil; import com.utils.CommonUtil; /** * 部门 * 后端接口 * @author * @email * @date 2021-05-07 10:42:31 */ @RestController @RequestMapping("/bumen") public class BumenController { @Autowired private BumenService bumenService; /** * 后端列表 */ @RequestMapping("/page") public R page(@RequestParam Map<String, Object> params,BumenEntity bumen, HttpServletRequest request){ EntityWrapper<BumenEntity> ew = new EntityWrapper<BumenEntity>(); PageUtils page = bumenService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, bumen), params), params)); return R.ok().put("data", page); } /** * 前端列表 */ @RequestMapping("/list") public R list(@RequestParam Map<String, Object> params,BumenEntity bumen, HttpServletRequest request){ EntityWrapper<BumenEntity> ew = new EntityWrapper<BumenEntity>(); PageUtils page = bumenService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, bumen), params), params)); return R.ok().put("data", page); } /** * 列表 */ @RequestMapping("/lists") public R list( BumenEntity bumen){ EntityWrapper<BumenEntity> ew = new EntityWrapper<BumenEntity>(); ew.allEq(MPUtil.allEQMapPre( bumen, "bumen")); return R.ok().put("data", bumenService.selectListView(ew)); } /** * 查询 */ @RequestMapping("/query") public R query(BumenEntity bumen){ EntityWrapper< BumenEntity> ew = new EntityWrapper< BumenEntity>(); ew.allEq(MPUtil.allEQMapPre( bumen, "bumen")); BumenView bumenView = bumenService.selectView(ew); return R.ok("查询部门成功").put("data", bumenView); } /** * 后端详情 */ @RequestMapping("/info/{id}") public R info(@PathVariable("id") Long id){ BumenEntity bumen = bumenService.selectById(id); return R.ok().put("data", bumen); } /** * 前端详情 */ @RequestMapping("/detail/{id}") public R detail(@PathVariable("id") Long id){ BumenEntity bumen = bumenService.selectById(id); return R.ok().put("data", bumen); } /** * 后端保存 */ @RequestMapping("/save") public R save(@RequestBody BumenEntity bumen, HttpServletRequest request){ bumen.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue()); //ValidatorUtils.validateEntity(bumen); bumenService.insert(bumen); return R.ok(); } /** * 前端保存 */ @RequestMapping("/add") public R add(@RequestBody BumenEntity bumen, HttpServletRequest request){ bumen.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue()); //ValidatorUtils.validateEntity(bumen); bumenService.insert(bumen); return R.ok(); } /** * 修改 */ @RequestMapping("/update") public R update(@RequestBody BumenEntity bumen, HttpServletRequest request){ //ValidatorUtils.validateEntity(bumen); bumenService.updateById(bumen);//全部更新 return R.ok(); } /** * 删除 */ @RequestMapping("/delete") public R delete(@RequestBody Long[] ids){ bumenService.deleteBatchIds(Arrays.asList(ids)); return R.ok(); } /** * 提醒接口 */ @RequestMapping("/remind/{columnName}/{type}") public R remindCount(@PathVariable("columnName") String columnName, HttpServletRequest request, @PathVariable("type") String type,@RequestParam Map<String, Object> map) { map.put("column", columnName); map.put("type", type); if(type.equals("2")) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar c = Calendar.getInstance(); Date remindStartDate = null; Date remindEndDate = null; if(map.get("remindstart")!=null) { Integer remindStart = Integer.parseInt(map.get("remindstart").toString()); c.setTime(new Date()); c.add(Calendar.DAY_OF_MONTH,remindStart); remindStartDate = c.getTime(); map.put("remindstart", sdf.format(remindStartDate)); } if(map.get("remindend")!=null) { Integer remindEnd = Integer.parseInt(map.get("remindend").toString()); c.setTime(new Date()); c.add(Calendar.DAY_OF_MONTH,remindEnd); remindEndDate = c.getTime(); map.put("remindend", sdf.format(remindEndDate)); } } Wrapper<BumenEntity> wrapper = new EntityWrapper<BumenEntity>(); if(map.get("remindstart")!=null) { wrapper.ge(columnName, map.get("remindstart")); } if(map.get("remindend")!=null) { wrapper.le(columnName, map.get("remindend")); } int count = bumenService.selectCount(wrapper); return R.ok().put("count", count); } } package com.controller; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Calendar; import java.util.Map; import java.util.HashMap; import java.util.Iterator; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import com.utils.ValidatorUtils; import org.apache.commons.lang3.StringUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.format.annotation.DateTimeFormat; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import com.baomidou.mybatisplus.mapper.EntityWrapper; import com.baomidou.mybatisplus.mapper.Wrapper; import com.annotation.IgnoreAuth; import com.entity.GangweiEntity; import com.entity.view.GangweiView; import com.service.GangweiService; import com.service.TokenService; import com.utils.PageUtils; import com.utils.R; import com.utils.MD5Util; import com.utils.MPUtil; import com.utils.CommonUtil; /** * 岗位 * 后端接口 * @author * @email * @date 2021-05-07 10:42:31 */ @RestController @RequestMapping("/gangwei") public class GangweiController { @Autowired private GangweiService gangweiService; /** * 后端列表 */ @RequestMapping("/page") public R page(@RequestParam Map<String, Object> params,GangweiEntity gangwei, HttpServletRequest request){ EntityWrapper<GangweiEntity> ew = new EntityWrapper<GangweiEntity>(); PageUtils page = gangweiService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, gangwei), params), params)); return R.ok().put("data", page); } /** * 前端列表 */ @RequestMapping("/list") public R list(@RequestParam Map<String, Object> params,GangweiEntity gangwei, HttpServletRequest request){ EntityWrapper<GangweiEntity> ew = new EntityWrapper<GangweiEntity>(); PageUtils page = gangweiService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, gangwei), params), params)); return R.ok().put("data", page); } /** * 列表 */ @RequestMapping("/lists") public R list( GangweiEntity gangwei){ EntityWrapper<GangweiEntity> ew = new EntityWrapper<GangweiEntity>(); ew.allEq(MPUtil.allEQMapPre( gangwei, "gangwei")); return R.ok().put("data", gangweiService.selectListView(ew)); } /** * 查询 */ @RequestMapping("/query") public R query(GangweiEntity gangwei){ EntityWrapper< GangweiEntity> ew = new EntityWrapper< GangweiEntity>(); ew.allEq(MPUtil.allEQMapPre( gangwei, "gangwei")); GangweiView gangweiView = gangweiService.selectView(ew); return R.ok("查询岗位成功").put("data", gangweiView); } /** * 后端详情 */ @RequestMapping("/info/{id}") public R info(@PathVariable("id") Long id){ GangweiEntity gangwei = gangweiService.selectById(id); return R.ok().put("data", gangwei); } /** * 前端详情 */ @RequestMapping("/detail/{id}") public R detail(@PathVariable("id") Long id){ GangweiEntity gangwei = gangweiService.selectById(id); return R.ok().put("data", gangwei); } /** * 后端保存 */ @RequestMapping("/save") public R save(@RequestBody GangweiEntity gangwei, HttpServletRequest request){ gangwei.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue()); //ValidatorUtils.validateEntity(gangwei); gangweiService.insert(gangwei); return R.ok(); } /** * 前端保存 */ @RequestMapping("/add") public R add(@RequestBody GangweiEntity gangwei, HttpServletRequest request){ gangwei.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue()); //ValidatorUtils.validateEntity(gangwei); gangweiService.insert(gangwei); return R.ok(); } /** * 修改 */ @RequestMapping("/update") public R update(@RequestBody GangweiEntity gangwei, HttpServletRequest request){ //ValidatorUtils.validateEntity(gangwei); gangweiService.updateById(gangwei);//全部更新 return R.ok(); } /** * 删除 */ @RequestMapping("/delete") public R delete(@RequestBody Long[] ids){ gangweiService.deleteBatchIds(Arrays.asList(ids)); return R.ok(); } /** * 提醒接口 */ @RequestMapping("/remind/{columnName}/{type}") public R remindCount(@PathVariable("columnName") String columnName, HttpServletRequest request, @PathVariable("type") String type,@RequestParam Map<String, Object> map) { map.put("column", columnName); map.put("type", type); if(type.equals("2")) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar c = Calendar.getInstance(); Date remindStartDate = null; Date remindEndDate = null; if(map.get("remindstart")!=null) { Integer remindStart = Integer.parseInt(map.get("remindstart").toString()); c.setTime(new Date()); c.add(Calendar.DAY_OF_MONTH,remindStart); remindStartDate = c.getTime(); map.put("remindstart", sdf.format(remindStartDate)); } if(map.get("remindend")!=null) { Integer remindEnd = Integer.parseInt(map.get("remindend").toString()); c.setTime(new Date()); c.add(Calendar.DAY_OF_MONTH,remindEnd); remindEndDate = c.getTime(); map.put("remindend", sdf.format(remindEndDate)); } } Wrapper<GangweiEntity> wrapper = new EntityWrapper<GangweiEntity>(); if(map.get("remindstart")!=null) { wrapper.ge(columnName, map.get("remindstart")); } if(map.get("remindend")!=null) { wrapper.le(columnName, map.get("remindend")); } int count = gangweiService.selectCount(wrapper); return R.ok().put("count", count); } } package com.controller; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Calendar; import java.util.Map; import java.util.HashMap; import java.util.Iterator; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import com.utils.ValidatorUtils; import org.apache.commons.lang3.StringUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.format.annotation.DateTimeFormat; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.RestController; import com.baomidou.mybatisplus.mapper.EntityWrapper; import com.baomidou.mybatisplus.mapper.Wrapper; import com.annotation.IgnoreAuth; import com.entity.JixiaokaoheEntity; import com.entity.view.JixiaokaoheView; import com.service.JixiaokaoheService; import com.service.TokenService; import com.utils.PageUtils; import com.utils.R; import com.utils.MD5Util; import com.utils.MPUtil; import com.utils.CommonUtil; /** * 绩效考核 * 后端接口 * @author * @email * @date 2021-05-07 10:42:31 */ @RestController @RequestMapping("/jixiaokaohe") public class JixiaokaoheController { @Autowired private JixiaokaoheService jixiaokaoheService; /** * 后端列表 */ @RequestMapping("/page") public R page(@RequestParam Map<String, Object> params,JixiaokaoheEntity jixiaokaohe, HttpServletRequest request){ String tableName = request.getSession().getAttribute("tableName").toString(); if(tableName.equals("yuangong")) { jixiaokaohe.setYuangonggonghao((String)request.getSession().getAttribute("username")); } EntityWrapper<JixiaokaoheEntity> ew = new EntityWrapper<JixiaokaoheEntity>(); PageUtils page = jixiaokaoheService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, jixiaokaohe), params), params)); return R.ok().put("data", page); } /** * 前端列表 */ @RequestMapping("/list") public R list(@RequestParam Map<String, Object> params,JixiaokaoheEntity jixiaokaohe, HttpServletRequest request){ EntityWrapper<JixiaokaoheEntity> ew = new EntityWrapper<JixiaokaoheEntity>(); PageUtils page = jixiaokaoheService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.likeOrEq(ew, jixiaokaohe), params), params)); return R.ok().put("data", page); } /** * 列表 */ @RequestMapping("/lists") public R list( JixiaokaoheEntity jixiaokaohe){ EntityWrapper<JixiaokaoheEntity> ew = new EntityWrapper<JixiaokaoheEntity>(); ew.allEq(MPUtil.allEQMapPre( jixiaokaohe, "jixiaokaohe")); return R.ok().put("data", jixiaokaoheService.selectListView(ew)); } /** * 查询 */ @RequestMapping("/query") public R query(JixiaokaoheEntity jixiaokaohe){ EntityWrapper< JixiaokaoheEntity> ew = new EntityWrapper< JixiaokaoheEntity>(); ew.allEq(MPUtil.allEQMapPre( jixiaokaohe, "jixiaokaohe")); JixiaokaoheView jixiaokaoheView = jixiaokaoheService.selectView(ew); return R.ok("查询绩效考核成功").put("data", jixiaokaoheView); } /** * 后端详情 */ @RequestMapping("/info/{id}") public R info(@PathVariable("id") Long id){ JixiaokaoheEntity jixiaokaohe = jixiaokaoheService.selectById(id); return R.ok().put("data", jixiaokaohe); } /** * 前端详情 */ @RequestMapping("/detail/{id}") public R detail(@PathVariable("id") Long id){ JixiaokaoheEntity jixiaokaohe = jixiaokaoheService.selectById(id); return R.ok().put("data", jixiaokaohe); } /** * 后端保存 */ @RequestMapping("/save") public R save(@RequestBody JixiaokaoheEntity jixiaokaohe, HttpServletRequest request){ jixiaokaohe.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue()); //ValidatorUtils.validateEntity(jixiaokaohe); jixiaokaoheService.insert(jixiaokaohe); return R.ok(); } /** * 前端保存 */ @RequestMapping("/add") public R add(@RequestBody JixiaokaoheEntity jixiaokaohe, HttpServletRequest request){ jixiaokaohe.setId(new Date().getTime()+new Double(Math.floor(Math.random()*1000)).longValue()); //ValidatorUtils.validateEntity(jixiaokaohe); jixiaokaoheService.insert(jixiaokaohe); return R.ok(); } /** * 修改 */ @RequestMapping("/update") public R update(@RequestBody JixiaokaoheEntity jixiaokaohe, HttpServletRequest request){ //ValidatorUtils.validateEntity(jixiaokaohe); jixiaokaoheService.updateById(jixiaokaohe);//全部更新 return R.ok(); } /** * 删除 */ @RequestMapping("/delete") public R delete(@RequestBody Long[] ids){ jixiaokaoheService.deleteBatchIds(Arrays.asList(ids)); return R.ok(); } /** * 提醒接口 */ @RequestMapping("/remind/{columnName}/{type}") public R remindCount(@PathVariable("columnName") String columnName, HttpServletRequest request, @PathVariable("type") String type,@RequestParam Map<String, Object> map) { map.put("column", columnName); map.put("type", type); if(type.equals("2")) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Calendar c = Calendar.getInstance(); Date remindStartDate = null; Date remindEndDate = null; if(map.get("remindstart")!=null) { Integer remindStart = Integer.parseInt(map.get("remindstart").toString()); c.setTime(new Date()); c.add(Calendar.DAY_OF_MONTH,remindStart); remindStartDate = c.getTime(); map.put("remindstart", sdf.format(remindStartDate)); } if(map.get("remindend")!=null) { Integer remindEnd = Integer.parseInt(map.get("remindend").toString()); c.setTime(new Date()); c.add(Calendar.DAY_OF_MONTH,remindEnd); remindEndDate = c.getTime(); map.put("remindend", sdf.format(remindEndDate)); } } Wrapper<JixiaokaoheEntity> wrapper = new EntityWrapper<JixiaokaoheEntity>(); if(map.get("remindstart")!=null) { wrapper.ge(columnName, map.get("remindstart")); } if(map.get("remindend")!=null) { wrapper.le(columnName, map.get("remindend")); } String tableName = request.getSession().getAttribute("tableName").toString(); if(tableName.equals("yuangong")) { wrapper.eq("yuangonggonghao", (String)request.getSession().getAttribute("username")); } int count = jixiaokaoheService.selectCount(wrapper); return R.ok().put("count", count); } }六、论文参考
七、最新计算机毕设选题推荐
最新计算机软件毕业设计选题大全-CSDN博客
八、源码获取：
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