前端使用的是Easyui框架，目前该系统只有管理员一个角色可以自己添加角色。

功能有：供应商管理、客户管理、商品管理、库存管理、进货管理、出货管理、各类查询、退货管理、统计管理、日志管理等。

运行环境：jdk1.8、mysql5.x、idea/eclipse、maven3.5/3.6。

用户信息控制器：

/**
 * <p>
 * 前端控制器
 * </p>
 *
 */
@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private RoleService roleService;


    /**
     * 登录
     *
     * @param username 用户名
     * @param password 密码
     * @param request
     * @return
     */

    @SysLog("登陆操作")
    @PostMapping("/login")
    public Result login(String username, String password, HttpServletRequest request) {
        try {
            //获取当前登录主体对象
            Subject subject = SecurityUtils.getSubject();
            UsernamePasswordToken token = new UsernamePasswordToken(username, password);
            subject.login(token);
            LoginUserVO userDTO = (LoginUserVO) subject.getPrincipal();
            request.getSession().setAttribute("username", userDTO.getUser());
            return Result.success(true, "200", "登录成功");
        } catch (UnknownAccountException e) {
            e.printStackTrace();
            return Result.error(false, "400", "登录失败,用户名不存在");
        }catch (IncorrectCredentialsException e) {
            e.printStackTrace();
            return Result.error(false, "400", "登录失败,密码错误");
        }catch (AuthenticationException e) {
            e.printStackTrace();
            return Result.error(false, "400", "登录失败,账户禁用");
        }
    }

    /**
     * 得到登陆验证码
     * @param response
     * @param session
     * @throws IOException
     */
    @RequestMapping("/getCode")
    public void getCode(HttpServletResponse response, HttpSession session) throws IOException {
        //定义图形验证码的长和宽
        LineCaptcha lineCaptcha = CaptchaUtil.createLineCaptcha(116, 36,4,5);
        session.setAttribute("code",lineCaptcha.getCode());
        try {
            ServletOutputStream outputStream = response.getOutputStream();
            lineCaptcha.write(outputStream);
            outputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 查询所有用户信息
     *
     * @param userVO
     * @return
     */
    @SysLog("用户查询操作")
    @RequestMapping("/userList")
    public DataGridViewResult userList(UserVO userVO) {
        //分页构造函数
        IPage<User> page = new Page<>(userVO.getPage(), userVO.getLimit());
        QueryWrapper<User> queryWrapper = new QueryWrapper<>();
        queryWrapper.like(!StringUtils.isEmpty(userVO.getUsername()), "username", userVO.getUsername());
        queryWrapper.like(!StringUtils.isEmpty(userVO.getUname()), "uname", userVO.getUname());
        /**
         * 翻页查询
         * @param page         翻页对象
         * @param queryWrapper 实体对象封装操作类
         */
        IPage<User> userIPage = userService.page(page, queryWrapper);
        return new DataGridViewResult(userIPage.getTotal(), userIPage.getRecords());
    }

    /**
     * 添加用户信息
     *
     * @param user
     * @return
     */
    @SysLog("用户添加操作")
    @PostMapping("/adduser")
    public Result addRole(User user) {


        user.setUcreatetime(new Date());
        String salt = UUIDUtil.randomUUID();
        user.setPassword(PasswordUtil.md5("000000", salt, 2));
        user.setSalt(salt);
        user.setType(1);
        boolean bool = userService.save(user);

        try {
            if (bool) {
                return Result.success(true, "200", "添加成功！");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return Result.error(false, null, "添加失败！");
    }

    /**
     * 校验用户名是否存在
     *
     * @param username
     * @return
     */

    @RequestMapping("/checkUserName")
    public String checkUserName(String username) {
        Map<String, Object> map = new HashMap<>();
        try {
            QueryWrapper<User> queryWrapper = new QueryWrapper<>();
            queryWrapper.eq("username", username);
            User user = userService.getOne(queryWrapper);
            if (user != null) {
                map.put("exist", true);
                map.put("message", "用户名已存在");
            } else {
                map.put("exist", false);
                map.put("message", "用户名可以使用");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return JSON.toJSONString(map);
    }

    /**
     * 修改用户信息
     *
     * @param user
     * @return
     */
    @SysLog("用户修改操作")
    @PostMapping("/updateuser")
    public Result updateUser(User user) {

        boolean bool = userService.updateById(user);
        try {
            if (bool) {
                return Result.success(true, "200", "修改成功！");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return Result.error(false, null, "修改失败！");
    }

    /**
     * 删除单条数据
     *
     * @param id
     * @return
     */
    @SysLog("用户删除操作")
    @RequestMapping("/deleteOne")
    public Result deleteOne(int id) {
        boolean bool = userService.removeById(id);
        try {
            if (bool) {
                return Result.success(true, "200", "删除成功！");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return Result.error(false, null, "删除失败！");
    }

    /**
     * 重置密码
     *
     * @param id
     * @return
     */
    @SysLog("用户修改操作")
    @PostMapping("/resetPwd")
    public Result resetPwd(int id) {

        User user = new User();
        String salt = UUIDUtil.randomUUID();
        user.setUid(id);
        user.setPassword(PasswordUtil.md5("000000", salt, 2));
        user.setSalt(salt);
        boolean bool = userService.updateById(user);

        try {
            if (bool) {
                return Result.success(true, "200", "重置成功！");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return Result.error(false, null, "重置失败！");
    }

    /**
     * 根据id查询当前用户拥有的角色
     *
     * @param id
     * @return
     */
    @RequestMapping("/initRoleByUserId")
    public DataGridViewResult initRoleByUserId(int id) {
        List<Map<String, Object>> mapList = null;
        try {
            //查询所有角色列表
            mapList = roleService.listMaps();
            //根据用户id查询用户拥有的角色
            Set<Integer> roleIdList = userService.findRoleByUserId(id);
            for (Map<String, Object> map : mapList) {
                //定义标记 默认不选中
                boolean flag = false;
                int roleId = (int) map.get("roleid");
                for (Integer rid : roleIdList) {
                    if (rid == roleId) {
                        flag = true;
                        break;
                    }
                }
                map.put("LAY_CHECKED", flag);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return new DataGridViewResult(Long.valueOf(mapList.size()), mapList);

    }

    /**
     * 为用户分配角色
     *
     * @param roleids
     * @param userid
     * @return
     */
    @SysLog("用户添加操作")
    @RequestMapping("/saveUserRole")
    public Result saveUserRole(String roleids, int userid) {

        try {
            if (userService.saveUserRole(userid, roleids)) {
                return Result.success(true, null, "分配成功");
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return Result.error(false, null, "分配失败");

    }

    /**
     * 修改密码
     *
     * @param newPassWord1
     * @param newPassWord2
     * @return
     */
    @RequestMapping("/updateUserPassWord")
    public Result updateUserPassWord(String newPassWord1, String newPassWord2,HttpSession session) {
        User sessionUser = (User) session.getAttribute("username");

        if (newPassWord1.equals(newPassWord2)){
            User user = new User();
            String salt = UUIDUtil.randomUUID();
            user.setUid(sessionUser.getUid());
            user.setPassword(PasswordUtil.md5(newPassWord1, salt, 2));
            user.setSalt(salt);
            boolean bool = userService.updateById(user);
            if (bool){
                return Result.success(true,null,"修改成功");
            }else {
                return Result.error(false,null,"修改失败!");
            }
        }else {
            return Result.error(false,null,"修改失败，两次密码不一致!");
        }

    }

}

销售信息控制层：

/**
 * <p>
 *  前端控制器
 * </p>
 *
 */
@RestController
@RequestMapping("/sale")
public class SaleController {
    @Autowired
    private SaleService saleService;

    @Autowired
    private GoodsService goodsService;
    
    @Autowired
    private CustomerService customerService;

    /**
     * 销售查询
     *
     * @param
     * @return
     */
    @SysLog("销售查询操作")
    @RequestMapping("/saleList")
    public DataGridViewResult saleList(SaleVO saleVO) {

        //创建分页信息    参数1 当前页  参数2 每页显示条数
        IPage<Sale> page = new Page<>(saleVO.getPage(), saleVO.getLimit());
        QueryWrapper<Sale> queryWrapper = new QueryWrapper<>();
        queryWrapper.like(!StringUtils.isEmpty(saleVO.getNumbering()),"numbering", saleVO.getNumbering());
        queryWrapper.eq(saleVO.getGid() != null && saleVO.getGid() != 0, "gid", saleVO.getGid());
        queryWrapper.ge(saleVO.getStartTime() != null, "buytime", saleVO.getStartTime());
        queryWrapper.le(saleVO.getEndTime() != null, "buytime", saleVO.getEndTime());

        queryWrapper.orderByDesc("buytime");

        IPage<Sale> saleIPage = saleService.page(page, queryWrapper);

        List<Sale> records = saleIPage.getRecords();

        for (Sale sale : records) {
            sale.setAllmoney(sale.getMoney()*sale.getBuyquantity());
            Customer customer = customerService.getById(sale.getCustid());

            if (null != customer) {
                sale.setCustomervip(customer.getCustvip());
                sale.setCustomername(customer.getCustname());
            }
            Goods goods = goodsService.getById(sale.getGid());
            if (null != goods) {

                sale.setGoodsname(goods.getGname());
                sale.setGnumbering(goods.getGnumbering());
            }
        }

        return new DataGridViewResult(saleIPage.getTotal(), records);

    }


    /**
     * 添加销售单信息
     *
     * @param sale
     * @return
     */
    @SysLog("销售添加操作")
    @PostMapping("/addsale")
    public Result addsale(Sale sale, HttpSession session) {
        if (sale.getGid()==0){
            return Result.error(false, null, "添加失败！未选商品");
        }
        Goods goods = goodsService.getById(sale.getGid());
        Integer gquantity = goods.getGquantity();
        if(gquantity<sale.getBuyquantity()){
            return Result.error(false, null, "添加失败！库存不足,库存为："+gquantity);
        }
        User user = (User) session.getAttribute("username");
        String num = RandomStringUtils.randomAlphanumeric(7);
        sale.setNumbering(num);
        sale.setPerson(user.getUsername());
        sale.setBuytime(new Date());
        sale.setRealnumber(sale.getBuyquantity());
        boolean bool = saleService.save(sale);
        if (bool) {
            return Result.success(true, "200", "添加成功！");
        }
        return Result.error(false, null, "添加失败！库存不足");
    }


    /**
     * 修改销售单信息
     *
     * @param sale
     * @return
     */
    @SysLog("销售修改操作")
    @PostMapping("/updatesale")
    public Result updatesale(Sale sale, HttpSession session) {

        User user = (User) session.getAttribute("username");
        sale.setPerson(user.getUsername());
        sale.setBuytime(new Date());
        boolean bool = saleService.updateById(sale);
        if (bool) {
            return Result.success(true, "200", "修改成功！");
        }
        return Result.error(false, null, "修改失败！");
    }
    /**
     * 删除单条数据
     *
     * @param id
     * @return
     */
    @SysLog("销售删除操作")
    @RequestMapping("/deleteOne")
    public Result deleteOne(int id) {

        boolean bool = saleService.removeById(id);
        if (bool) {
            return Result.success(true, "200", "删除成功！");
        }
        return Result.error(false, null, "删除失败！");
    }



}

商品信息控制层：

/**
 * <p>
 * 前端控制器
 * </p>
 *
 */
@RestController
@RequestMapping("/goods")
public class GoodsController {


    @Autowired
    private GoodsService goodsService;

    @Autowired
    private ProviderService providerService;

    @Autowired
    private CategoryService categoryService;

    /**
     * 商品模糊查询
     *
     * @param
     * @return
     */
    @SysLog("商品查询操作")
    @RequestMapping("/goodsList")
    public DataGridViewResult goodsList(GoodsVO goodsVO) {
        //创建分页信息    参数1 当前页  参数2 每页显示条数
        IPage<Goods> page = new Page<>(goodsVO.getPage(), goodsVO.getLimit());
        QueryWrapper<Goods> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq(goodsVO.getProviderid() != null && goodsVO.getProviderid() != 0, "providerid", goodsVO.getProviderid());
        queryWrapper.like(!StringUtils.isEmpty(goodsVO.getGname()), "gname", goodsVO.getGname());
        IPage<Goods> goodsIPage = goodsService.page(page, queryWrapper);
        List<Goods> records = goodsIPage.getRecords();
        for (Goods goods : records) {
            Provider provider = providerService.getById(goods.getProviderid());
            if (null != provider) {
                goods.setProvidername(provider.getProvidername());
            }
        }
        return new DataGridViewResult(goodsIPage.getTotal(), records);
    }


    /**
     * 添加商品信息
     *
     * @param goods
     * @return
     */
    @SysLog("商品添加操作")
    @PostMapping("/addgoods")
    public Result addGoods(Goods goods) {
        String id = RandomStringUtils.randomAlphanumeric(8);
        if (goods.getGoodsimg()!=null&&goods.getGoodsimg().endsWith("_temp")){
            String newName = AppFileUtils.renameFile(goods.getGoodsimg());
            goods.setGoodsimg(newName);
        }
        goods.setGnumbering(id);
        boolean bool = goodsService.save(goods);
        if (bool) {
            return Result.success(true, "200", "添加成功！");
        }
        return Result.error(false, null, "添加失败！");
    }

    /**
     * 修改商品信息
     *
     * @param goods
     * @return
     */
    @SysLog("商品修改操作")
    @PostMapping("/updategoods")
    public Result updateGoods(Goods goods) {
        //商品图片不是默认图片
        if (!(goods.getGoodsimg()!=null&&goods.getGoodsimg().equals(Constast.DEFAULT_IMG))){
            if (goods.getGoodsimg().endsWith("_temp")){
                String newName = AppFileUtils.renameFile(goods.getGoodsimg());
                goods.setGoodsimg(newName);
                //删除原先的图片
                String oldPath = goodsService.getById(goods.getGid()).getGoodsimg();
                AppFileUtils.removeFileByPath(oldPath);
            }
        }
        boolean bool = goodsService.updateById(goods);
        if (bool) {
            return Result.success(true, "200", "修改成功！");
        }
        return Result.error(false, null, "修改失败！");
    }


    /**
     * 删除单条数据
     *
     * @param id
     * @return
     */
    @SysLog("商品删除操作")
    @RequestMapping("/deleteOne")
    public Result deleteOne(int id) {

        boolean bool = goodsService.removeById(id);
        if (bool) {
            return Result.success(true, "200", "删除成功！");
        }
        return Result.error(false, null, "删除失败！");
    }

    /**
     * 根据id查询当前商品拥有的类别
     *
     * @param id
     * @return
     */
    @RequestMapping("/initGoodsByCategoryId")
    public DataGridViewResult initGoodsByCategoryId(int id) {
        List<Map<String, Object>> mapList = null;
        try {
            //查询所有类别列表
            mapList = categoryService.listMaps();
            //根据商品id查询商品拥有的类别
            Set<Integer> cateIdList = categoryService.findGoodsByCategoryId(id);
            for (Map<String, Object> map : mapList) {
                //定义标记 默认不选中
                boolean flag = false;
                int cateId = (int) map.get("cateid");
                for (Integer cid : cateIdList) {
                    if (cid == cateId) {
                        flag = true;
                        break;
                    }
                }
                map.put("LAY_CHECKED", flag);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return new DataGridViewResult(Long.valueOf(mapList.size()), mapList);

    }

    /**
     * 根据商品id加载商品信息
     * @param goodsid
     * @return
     */
    @GetMapping("/loadGoodsById")
    public DataGridViewResult loadGoodsById(int goodsid) {


        QueryWrapper<Goods> goodsQueryWrapper = new QueryWrapper<>();
        goodsQueryWrapper.eq(goodsid != 0, "gid", goodsid);
        Goods goods = goodsService.getById(goodsid);

        return new DataGridViewResult(goods);

    }

    /**
     * 为商品分配类别
     *
     * @param categoryids
     * @param goodsid
     * @return
     */
    @SysLog("类别添加操作")
    @RequestMapping("/saveGoodsCategory")
    public Result saveGoodsCategory(String categoryids, int goodsid) {

        try {
            if (goodsService.saveGoodsCategory(goodsid, categoryids)) {
                return Result.success(true, null, "分配成功");
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
        return Result.error(false, null, "分配失败");

    }

    /**
     * 加载下拉框
     *
     * @return
     */
    @RequestMapping("/loadAllGoods")
    public DataGridViewResult loadAllGoods() {
        QueryWrapper<Goods> queryWrapper = new QueryWrapper<>();
        List<Goods> list = goodsService.list(queryWrapper);
        return new DataGridViewResult(list);

    }


    /**
     * 根据供应商查商品下拉框
     *
     * @param providerid
     * @return
     */
    @RequestMapping("/loadGoodsByProvidreId")
    public DataGridViewResult loadGoodsByProvidreId(Integer providerid) {
        QueryWrapper<Goods> goodsQueryWrapper = new QueryWrapper<>();
        goodsQueryWrapper.eq(providerid != null, "providerid", providerid);
        List<Goods> list = goodsService.list(goodsQueryWrapper);
        for (Goods goods : list) {
            Provider provider = providerService.getById(goods.getProviderid());
            if (null != provider) {
                goods.setProvidername(provider.getProvidername());
            }

        }
        return new DataGridViewResult(list);

    }
}