末尾获取源码
开发语言：Java
Java开发工具：JDK1.8
后端框架：SpringBoot
前端：采用JSP技术开发
数据库：MySQL5.7和Navicat管理工具结合
服务器：Tomcat8.5
开发软件：IDEA / Eclipse
是否Maven项目：是
目录
一、项目简介
线上买菜系统利用网络沟通、计算机信息存储管理，有着与传统的方式所无法替代的优点。比如计算检索速度特别快、可靠性特别高、存储容量特别大、保密性特别好、可保存时间特别长、成本特别低等。在工作效率上，能够得到极大地提高，延伸至服务水平也会有好的收获，有了网络，线上买菜系统的各方面的管理更加科学和系统，更加规范和简便。
二、系统功能
本线上买菜系统主要包括三大功能模块，即管理员和用户。
（1）管理员模块：首页、个人中心、用户管理、商品分类管理、商品信息管理、系统管理、订单管理。
（2）前台：商品信息、公告信息、个人中心、后台管理、购物车。
三、系统项目截图
3.1前台首页
前台首页有商品信息、公告信息、个人中心、后台管理、购物车等相关功能。
商品信息我们可以点击喜欢的商品可以加入购物车或者选择立即购买。
3.2后台管理
管理员后台登录有首页、个人中心、用户管理、商品分类管理、商品信息管理、系统管理、订单管理。
四、核心代码
4.1登录相关
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package com.controller;
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import java.util.Arrays;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.Map;
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import javax.servlet.http.HttpServletRequest;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Controller;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.PostMapping;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.ResponseBody;
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import org.springframework.web.bind.annotation.RestController;
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import com.annotation.IgnoreAuth;
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import com.baomidou.mybatisplus.mapper.EntityWrapper;
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import com.entity.TokenEntity;
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import com.entity.UserEntity;
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import com.service.TokenService;
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import com.service.UserService;
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import com.utils.CommonUtil;
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import com.utils.MD5Util;
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import com.utils.MPUtil;
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import com.utils.PageUtils;
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import com.utils.R;
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import com.utils.ValidatorUtils;
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/**
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* 登录相关
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*/
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@RequestMapping("users")
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@RestController
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public
class
UserController{
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@Autowired
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private UserService userService;
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@Autowired
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private TokenService tokenService;
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/**
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* 登录
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*/
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@IgnoreAuth
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@PostMapping(value = "/login")
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public R
login
(String username, String password, String captcha, HttpServletRequest request) {
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UserEntity
user
= userService.selectOne(
new
EntityWrapper<UserEntity>().eq(
"username", username));
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if(user==
null || !user.getPassword().equals(password)) {
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return R.error(
"账号或密码不正确");
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}
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String
token
= tokenService.generateToken(user.getId(),username,
"users", user.getRole());
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return R.ok().put(
"token", token);
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}
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/**
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* 注册
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*/
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@IgnoreAuth
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@PostMapping(value = "/register")
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public R
register
(@RequestBody UserEntity user){
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// ValidatorUtils.validateEntity(user);
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if(userService.selectOne(
new
EntityWrapper<UserEntity>().eq(
"username", user.getUsername())) !=
null) {
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return R.error(
"用户已存在");
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}
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userService.insert(user);
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return R.ok();
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}
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/**
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* 退出
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*/
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@GetMapping(value = "logout")
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public R
logout
(HttpServletRequest request) {
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request.getSession().invalidate();
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return R.ok(
"退出成功");
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}
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/**
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* 密码重置
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*/
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@IgnoreAuth
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@RequestMapping(value = "/resetPass")
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public R
resetPass
(String username, HttpServletRequest request){
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UserEntity
user
= userService.selectOne(
new
EntityWrapper<UserEntity>().eq(
"username", username));
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if(user==
null) {
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return R.error(
"账号不存在");
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}
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user.setPassword(
"123456");
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userService.update(user,
null);
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return R.ok(
"密码已重置为：123456");
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}
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/**
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* 列表
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*/
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@RequestMapping("/page")
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public R
page
(@RequestParam Map<String, Object> params,UserEntity user){
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EntityWrapper<UserEntity> ew =
new
EntityWrapper<UserEntity>();
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PageUtils
page
= userService.queryPage(params, MPUtil.sort(MPUtil.between(MPUtil.allLike(ew, user), params), params));
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return R.ok().put(
"data", page);
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}
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/**
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* 列表
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*/
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@RequestMapping("/list")
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public R
list
( UserEntity user){
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EntityWrapper<UserEntity> ew =
new
EntityWrapper<UserEntity>();
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ew.allEq(MPUtil.allEQMapPre( user,
"user"));
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return R.ok().put(
"data", userService.selectListView(ew));
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}
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/**
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* 信息
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*/
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@RequestMapping("/info/{id}")
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public R
info
(@PathVariable("id") String id){
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UserEntity
user
= userService.selectById(id);
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return R.ok().put(
"data", user);
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}
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/**
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* 获取用户的session用户信息
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*/
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@RequestMapping("/session")
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public R
getCurrUser
(HttpServletRequest request){
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Long
id
= (Long)request.getSession().getAttribute(
"userId");
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UserEntity
user
= userService.selectById(id);
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return R.ok().put(
"data", user);
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}
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/**
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* 保存
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*/
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@PostMapping("/save")
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public R
save
(@RequestBody UserEntity user){
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// ValidatorUtils.validateEntity(user);
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if(userService.selectOne(
new
EntityWrapper<UserEntity>().eq(
"username", user.getUsername())) !=
null) {
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return R.error(
"用户已存在");
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}
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userService.insert(user);
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return R.ok();
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}
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/**
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* 修改
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*/
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@RequestMapping("/update")
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public R
update
(@RequestBody UserEntity user){
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// ValidatorUtils.validateEntity(user);
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userService.updateById(user);
//全部更新
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return R.ok();
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}
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/**
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* 删除
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*/
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@RequestMapping("/delete")
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public R
delete
(@RequestBody Long[] ids){
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userService.deleteBatchIds(Arrays.asList(ids));
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return R.ok();
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}
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}
4.2文件上传
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package com.controller;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.Date;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Random;
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import java.util.UUID;
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import org.apache.commons.io.FileUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.util.ResourceUtils;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestParam;
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import org.springframework.web.bind.annotation.RestController;
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import org.springframework.web.multipart.MultipartFile;
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import com.annotation.IgnoreAuth;
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import com.baomidou.mybatisplus.mapper.EntityWrapper;
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import com.entity.ConfigEntity;
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import com.entity.EIException;
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import com.service.ConfigService;
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import com.utils.R;
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/**
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* 上传文件映射表
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*/
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@RestController
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@RequestMapping("file")
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@SuppressWarnings({"unchecked","rawtypes"})
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public
class
FileController{
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@Autowired
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private ConfigService configService;
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/**
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* 上传文件
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*/
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@RequestMapping("/upload")
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public R
upload
(@RequestParam("file") MultipartFile file,String type)
throws Exception {
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if (file.isEmpty()) {
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throw
new
EIException(
"上传文件不能为空");
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}
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String
fileExt
= file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(
".")+
1);
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File
path
=
new
File(ResourceUtils.getURL(
"classpath:static").getPath());
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if(!path.exists()) {
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path =
new
File(
"");
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}
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File
upload
=
new
File(path.getAbsolutePath(),
"/upload/");
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if(!upload.exists()) {
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upload.mkdirs();
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}
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String
fileName
=
new
Date().getTime()+
"."+fileExt;
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File
dest
=
new
File(upload.getAbsolutePath()+
"/"+fileName);
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file.transferTo(dest);
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FileUtils.copyFile(dest,
new
File(
"C:\\Users\\Desktop\\jiadian\\springbootl7own\\src\\main\\resources\\static\\upload"+
"/"+fileName));
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if(StringUtils.isNotBlank(type) && type.equals(
"1")) {
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ConfigEntity
configEntity
= configService.selectOne(
new
EntityWrapper<ConfigEntity>().eq(
"name",
"faceFile"));
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if(configEntity==
null) {
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configEntity =
new
ConfigEntity();
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configEntity.setName(
"faceFile");
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configEntity.setValue(fileName);
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}
else {
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configEntity.setValue(fileName);
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}
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configService.insertOrUpdate(configEntity);
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}
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return R.ok().put(
"file", fileName);
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}
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/**
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* 下载文件
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*/
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@IgnoreAuth
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@RequestMapping("/download")
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public ResponseEntity<
byte[]> download(
@RequestParam String fileName) {
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try {
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File
path
=
new
File(ResourceUtils.getURL(
"classpath:static").getPath());
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if(!path.exists()) {
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path =
new
File(
"");
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}
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File
upload
=
new
File(path.getAbsolutePath(),
"/upload/");
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if(!upload.exists()) {
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upload.mkdirs();
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}
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File
file
=
new
File(upload.getAbsolutePath()+
"/"+fileName);
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if(file.exists()){
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/*if(!fileService.canRead(file, SessionManager.getSessionUser())){
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getResponse().sendError(403);
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}*/
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HttpHeaders
headers
=
new
HttpHeaders();
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headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
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headers.setContentDispositionFormData(
"attachment", fileName);
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return
new
ResponseEntity<
byte[]>(FileUtils.readFileToByteArray(file),headers, HttpStatus.CREATED);
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}
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}
catch (IOException e) {
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e.printStackTrace();
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}
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return
new
ResponseEntity<
byte[]>(HttpStatus.INTERNAL_SERVER_ERROR);
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}
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}
4.3封装
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package com.utils;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* 返回数据
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*/
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public
class
R
extends
HashMap<String, Object> {
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private
static
final
long
serialVersionUID
=
1L;
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public
R
() {
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put(
"code",
0);
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}
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public
static R
error
() {
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return error(
500,
"未知异常，请联系管理员");
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}
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public
static R
error
(String msg) {
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return error(
500, msg);
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}
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public
static R
error
(int code, String msg) {
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R
r
=
new
R();
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r.put(
"code", code);
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r.put(
"msg", msg);
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return r;
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}
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public
static R
ok
(String msg) {
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R
r
=
new
R();
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r.put(
"msg", msg);
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return r;
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}
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public
static R
ok
(Map<String, Object> map) {
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R
r
=
new
R();
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r.putAll(map);
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return r;
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}
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public
static R
ok
() {
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return
new
R();
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}
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public R
put
(String key, Object value) {
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super.put(key, value);
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return
this;
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}
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}
转载：https://blog.csdn.net/weixin_52721608/article/details/127956408
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