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Java如何進行食品溯源系統的實現,相信很多沒有經驗的人對此束手無策,為此本文總結了問題出現的原因和解決方法,通過這篇文章希望你能解決這個問題。
Jdk1.8 + Tomcat8.5 + Mysql + HBuilderX(Webstorm也行)+ Eclispe(IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持)。
Springboot + Maven + mybatis+ Vue 等等組成,B/S模式 + Maven管理等等。
系統控制器:
/** * 系統控制器 * @author yy * */ @RequestMapping("/system") @Controller public class SystemController { @Autowired private OperaterLogService operaterLogService; @Autowired private UserService userService; @Autowired private DatabaseBakService databaseBakService; @Autowired private StaffService staffService; @Autowired private OrderAuthService orderAuthService; private Logger log = LoggerFactory.getLogger(SystemController.class); /** * 登錄頁面 * @param model * @return */ @RequestMapping(value="/login",method=RequestMethod.GET) public String login(Model model){ model.addAttribute("loginTypes", LoginType.values()); return "admin/system/login"; } /** * 用戶登錄提交表單處理方法 * @param request * @param cpacha * @return */ @RequestMapping(value="/login",method=RequestMethod.POST) @ResponseBody public Result<Boolean> login(HttpServletRequest request,String username,String password,String cpacha,Integer type){ if(StringUtils.isEmpty(username)){ return Result.error(CodeMsg.ADMIN_USERNAME_EMPTY); } if(StringUtils.isEmpty(password)){ return Result.error(CodeMsg.ADMIN_PASSWORD_EMPTY); } //表示實體信息合法,開始驗證驗證碼是否為空 if(StringUtils.isEmpty(cpacha)){ return Result.error(CodeMsg.CPACHA_EMPTY); } //說明驗證碼不為空,從session里獲取驗證碼 Object attribute = request.getSession().getAttribute("admin_login"); if(attribute == null){ return Result.error(CodeMsg.SESSION_EXPIRED); } //表示session未失效,進一步判斷用戶填寫的驗證碼是否正確 if(!cpacha.equalsIgnoreCase(attribute.toString())){ return Result.error(CodeMsg.CPACHA_ERROR); } if(type == LoginType.ADMINISTRATOR.getCode()){ //表示驗證碼正確,開始查詢數據庫,檢驗密碼是否正確 User findByUsername = userService.findByUsername(username); //判斷是否為空 if(findByUsername == null){ return Result.error(CodeMsg.ADMIN_USERNAME_NO_EXIST); } //表示用戶存在,進一步對比密碼是否正確 if(!findByUsername.getPassword().equals(password)){ return Result.error(CodeMsg.ADMIN_PASSWORD_ERROR); } //表示密碼正確,接下來判斷用戶狀態是否可用 if(findByUsername.getStatus() == User.ADMIN_USER_STATUS_UNABLE){ return Result.error(CodeMsg.ADMIN_USER_UNABLE); } //檢查用戶所屬角色狀態是否可用 if(findByUsername.getRole() == null || findByUsername.getRole().getStatus() == Role.ADMIN_ROLE_STATUS_UNABLE){ return Result.error(CodeMsg.ADMIN_USER_ROLE_UNABLE); } //檢查用戶所屬角色的權限是否存在 if(findByUsername.getRole().getAuthorities() == null || findByUsername.getRole().getAuthorities().size() == 0){ return Result.error(CodeMsg.ADMIN_USER_ROLE_AUTHORITES_EMPTY); } //檢查一切符合,可以登錄,將用戶信息存放至session request.getSession().setAttribute(SessionConstant.SESSION_USER_LOGIN_KEY, findByUsername); request.getSession().setAttribute("loginType",type); //銷毀session中的驗證碼 request.getSession().setAttribute("admin_login", null); //將登陸記錄寫入日志庫 operaterLogService.add("用戶【"+username+"】于【" + StringUtil.getFormatterDate(new Date(), "yyyy-MM-dd HH:mm:ss") + "】登錄系統!"); log.info("用戶成功登錄,user = " + findByUsername); }else{ Staff byJobNumber = staffService.findByNameAndIsStatus(username); //判斷是否為空 if(byJobNumber == null){ return Result.error(CodeMsg.ADMIN_USERNAME_NO_EXIST); } //表示用戶存在,進一步對比密碼是否正確 if(!byJobNumber.getPassword().equals(password)){ return Result.error(CodeMsg.ADMIN_PASSWORD_ERROR); } //檢查用戶所屬角色狀態是否可用 if(byJobNumber.getRole() == null || byJobNumber.getRole().getStatus() == Role.ADMIN_ROLE_STATUS_UNABLE){ return Result.error(CodeMsg.ADMIN_USER_ROLE_UNABLE); } //檢查用戶所屬角色的權限是否存在 if(byJobNumber.getRole().getAuthorities() == null || byJobNumber.getRole().getAuthorities().size() == 0){ return Result.error(CodeMsg.ADMIN_USER_ROLE_AUTHORITES_EMPTY); } //檢查一切符合,可以登錄,將用戶信息存放至session request.getSession().setAttribute(SessionConstant.SESSION_STAFF_LOGIN_KEY, byJobNumber); request.getSession().setAttribute("loginType",type); //銷毀session中的驗證碼 request.getSession().setAttribute("admin_login", null); //將登陸記錄寫入日志庫 operaterLogService.add("用戶【"+username+"】于【" + StringUtil.getFormatterDate(new Date(), "yyyy-MM-dd HH:mm:ss") + "】登錄系統!"); log.info("員工成功登錄,user = " + byJobNumber); } return Result.success(true); } /** * 登錄成功后的系統主頁 * @param model * @return */ @RequestMapping(value="/index") public String index(Model model){ model.addAttribute("operatorLogs", operaterLogService.findLastestLog(10)); model.addAttribute("userTotal", userService.total()); model.addAttribute("operatorLogTotal", operaterLogService.total()); model.addAttribute("databaseBackupTotal", databaseBakService.total()); model.addAttribute("onlineUserTotal", SessionListener.onlineUserCount); return "admin/system/index"; } /** * 注銷登錄 * @return */ @RequestMapping(value="/logout") public String logout(){ Integer loginType = (Integer) SessionUtil.get("loginType"); if(loginType == LoginType.ADMINISTRATOR.getCode()){ User loginedUser = SessionUtil.getLoginedUser(); if(loginedUser != null){ SessionUtil.set(SessionConstant.SESSION_USER_LOGIN_KEY, null); } }else if(loginType == LoginType.STAFF.getCode()){ Staff loginedStaff = SessionUtil.getLoginedStaff(); if(loginedStaff != null){ SessionUtil.set(SessionConstant.SESSION_STAFF_LOGIN_KEY,null); } } return "redirect:login"; } /** * 無權限提示頁面 * @return */ @RequestMapping(value="/no_right") public String noRight(){ return "admin/system/no_right"; } /** * 修改用戶個人信息 * @return */ @RequestMapping(value="/update_userinfo",method=RequestMethod.GET) public String updateUserInfo(){ return "admin/system/update_userinfo"; } /** * 修改個人信息保存 * @param user * @return */ @RequestMapping(value="/update_userinfo",method=RequestMethod.POST) public String updateUserInfo(User user){ User loginedUser = SessionUtil.getLoginedUser(); loginedUser.setEmail(user.getEmail()); loginedUser.setMobile(user.getMobile()); loginedUser.setHeadPic(user.getHeadPic()); //首先保存到數據庫 userService.save(loginedUser); //更新session里的值 SessionUtil.set(SessionConstant.SESSION_USER_LOGIN_KEY, loginedUser); return "redirect:update_userinfo"; } /** * 修改密碼頁面 * @return */ @RequestMapping(value="/update_pwd",method=RequestMethod.GET) public String updatePwd(){ return "admin/system/update_pwd"; } /** * 修改密碼表單提交 * @param oldPwd * @param newPwd * @return */ @RequestMapping(value="/update_pwd",method=RequestMethod.POST) @ResponseBody public Result<Boolean> updatePwd(@RequestParam(name="oldPwd",required=true)String oldPwd, @RequestParam(name="newPwd",required=true)String newPwd ){ Integer loginType = (Integer) SessionUtil.get("loginType"); if(loginType == LoginType.ADMINISTRATOR.getCode()){ User loginedUser = SessionUtil.getLoginedUser(); if(!loginedUser.getPassword().equals(oldPwd)){ return Result.error(CodeMsg.ADMIN_USER_UPDATE_PWD_ERROR); } if(StringUtils.isEmpty(newPwd)){ return Result.error(CodeMsg.ADMIN_USER_UPDATE_PWD_EMPTY); } if(newPwd.length()<4 || newPwd.length()>32){ return Result.error(CodeMsg.ADMIN_USER_PWD_LENGTH_ERROR); } loginedUser.setPassword(newPwd); //保存數據庫 userService.save(loginedUser); //更新session SessionUtil.set(SessionConstant.SESSION_USER_LOGIN_KEY, loginedUser); }else{ Staff loginedStaff = SessionUtil.getLoginedStaff(); Staff staff = staffService.find(loginedStaff.getId()); if(!staff.getPassword().equals(oldPwd)){ return Result.error(CodeMsg.ADMIN_USER_UPDATE_PWD_ERROR); } if(StringUtils.isEmpty(newPwd)){ return Result.error(CodeMsg.ADMIN_USER_UPDATE_PWD_EMPTY); } staff.setPassword(newPwd); CodeMsg codeMsg = ValidateEntityUtil.validate(staff); if (codeMsg.getCode() != CodeMsg.SUCCESS.getCode()){ return Result.error(codeMsg); } loginedStaff.setPassword(newPwd); //保存數據庫 staffService.save(loginedStaff); //更新session SessionUtil.set(SessionConstant.SESSION_STAFF_LOGIN_KEY, loginedStaff); } return Result.success(true); } /** * 日志管理列表 * @param model * @param operaterLog * @param pageBean * @return */ @RequestMapping(value="/operator_log_list") public String operatorLogList(Model model,OperaterLog operaterLog,PageBean<OperaterLog> pageBean){ model.addAttribute("pageBean", operaterLogService.findList(operaterLog, pageBean)); model.addAttribute("operator", operaterLog.getOperator()); model.addAttribute("title", "日志列表"); return "admin/system/operator_log_list"; } /** * 驗證訂單 * @param orderSn * @param phone * @return */ @RequestMapping(value="/auth_order",method=RequestMethod.POST) @ResponseBody public Result<Boolean> authOrder(@RequestParam(name="orderSn",required=true)String orderSn,@RequestParam(name="phone",required=true)String phone){ OrderAuth orderAuth = new OrderAuth(); orderAuth.setMac(StringUtil.getMac()); orderAuth.setOrderSn(orderSn); orderAuth.setPhone(phone); orderAuthService.save(orderAuth); AppConfig.ORDER_AUTH = 1; return Result.success(true); } /** * 刪除操作日志,可刪除多個 * @param ids * @return */ @RequestMapping(value="/delete_operator_log",method=RequestMethod.POST) @ResponseBody public Result<Boolean> delete(String ids){ if(!StringUtils.isEmpty(ids)){ String[] splitIds = ids.split(","); for(String id : splitIds){ operaterLogService.delete(Long.valueOf(id)); } } return Result.success(true); } /** * 清空整個日志 * @return */ @RequestMapping(value="/delete_all_operator_log",method=RequestMethod.POST) @ResponseBody public Result<Boolean> deleteAll(){ operaterLogService.deleteAll(); return Result.success(true); } }
后臺用戶管理控制器:
/** * 后臺用戶管理控制器 * @author yy * */ @RequestMapping("/admin/user") @Controller public class UserController { @Autowired private UserService userService; @Autowired private RoleService roleService; @Autowired private OperaterLogService operaterLogService; /** * 用戶列表頁面 * @param model * @param user * @param pageBean * @return */ @RequestMapping(value="/list") public String list(Model model,User user,PageBean<User> pageBean){ model.addAttribute("title", "用戶列表"); model.addAttribute("username", user.getUsername()); model.addAttribute("pageBean", userService.findList(user, pageBean)); return "admin/user/list"; } /** * 新增用戶頁面 * @param model * @return */ @RequestMapping(value="/add",method=RequestMethod.GET) public String add(Model model){ model.addAttribute("roles", roleService.findAll()); return "admin/user/add"; } /** * 用戶添加表單提交處理 * @param user * @return */ @RequestMapping(value="/add",method=RequestMethod.POST) @ResponseBody public Result<Boolean> add(User user){ //用統一驗證實體方法驗證是否合法 CodeMsg validate = ValidateEntityUtil.validate(user); if(validate.getCode() != CodeMsg.SUCCESS.getCode()){ return Result.error(validate); } if(user.getRole() == null || user.getRole().getId() == null){ return Result.error(CodeMsg.ADMIN_USER_ROLE_EMPTY); } //判斷用戶名是否存在 if(userService.isExistUsername(user.getUsername(), 0l)){ return Result.error(CodeMsg.ADMIN_USERNAME_EXIST); } //到這說明一切符合條件,進行數據庫新增 if(userService.save(user) == null){ return Result.error(CodeMsg.ADMIN_USE_ADD_ERROR); } operaterLogService.add("添加用戶,用戶名:" + user.getUsername()); return Result.success(true); } /** * 用戶編輯頁面 * @param model * @return */ @RequestMapping(value="/edit",method=RequestMethod.GET) public String edit(Model model,@RequestParam(name="id",required=true)Long id){ model.addAttribute("roles", roleService.findAll()); model.addAttribute("user", userService.find(id)); return "admin/user/edit"; } /** * 編輯用戶信息表單提交處理 * @param user * @return */ @RequestMapping(value="/edit",method=RequestMethod.POST) @ResponseBody public Result<Boolean> edit(User user){ //用統一驗證實體方法驗證是否合法 CodeMsg validate = ValidateEntityUtil.validate(user); if(validate.getCode() != CodeMsg.SUCCESS.getCode()){ return Result.error(validate); } if(user.getRole() == null || user.getRole().getId() == null){ return Result.error(CodeMsg.ADMIN_USER_ROLE_EMPTY); } if(user.getId() == null || user.getId().longValue() <= 0){ return Result.error(CodeMsg.ADMIN_USE_NO_EXIST); } if(userService.isExistUsername(user.getUsername(), user.getId())){ return Result.error(CodeMsg.ADMIN_USERNAME_EXIST); } //到這說明一切符合條件,進行數據庫保存 User findById = userService.find(user.getId()); //講提交的用戶信息指定字段復制到已存在的user對象中,該方法會覆蓋新字段內容 BeanUtils.copyProperties(user, findById, "id","createTime","updateTime"); if(userService.save(findById) == null){ return Result.error(CodeMsg.ADMIN_USE_EDIT_ERROR); } operaterLogService.add("編輯用戶,用戶名:" + user.getUsername()); return Result.success(true); } /** * 刪除用戶 * @param id * @return */ @RequestMapping(value="/delete",method=RequestMethod.POST) @ResponseBody public Result<Boolean> delete(@RequestParam(name="id",required=true)Long id){ try { userService.delete(id); } catch (Exception e) { return Result.error(CodeMsg.ADMIN_USE_DELETE_ERROR); } operaterLogService.add("刪除用戶,用戶ID:" + id); return Result.success(true); } }
后臺角色管理控制器:
/** * 后臺角色管理控制器 * @author yy * */ @RequestMapping("/admin/role") @Controller public class RoleController { private Logger log = LoggerFactory.getLogger(RoleController.class); @Autowired private MenuService menuService; @Autowired private OperaterLogService operaterLogService; @Autowired private RoleService roleService; /** * 分頁搜索角色列表 * @param model * @param role * @param pageBean * @return */ @RequestMapping(value="/list") public String list(Model model,Role role,PageBean<Role> pageBean){ model.addAttribute("title", "角色列表"); model.addAttribute("name", role.getName()); model.addAttribute("pageBean", roleService.findByName(role, pageBean)); return "admin/role/list"; } /** * 角色添加頁面 * @param model * @return */ @RequestMapping(value="/add",method=RequestMethod.GET) public String add(Model model){ List<Menu> findAll = menuService.findAll(); model.addAttribute("topMenus",MenuUtil.getTopMenus(findAll)); model.addAttribute("secondMenus",MenuUtil.getSecondMenus(findAll)); model.addAttribute("thirdMenus",MenuUtil.getThirdMenus(findAll)); return "admin/role/add"; } /** * 角色添加表單提交處理 * @param role * @return */ @RequestMapping(value="/add",method=RequestMethod.POST) @ResponseBody public Result<Boolean> add(Role role){ //用統一驗證實體方法驗證是否合法 CodeMsg validate = ValidateEntityUtil.validate(role); if(validate.getCode() != CodeMsg.SUCCESS.getCode()){ return Result.error(validate); } if(roleService.save(role) == null){ return Result.error(CodeMsg.ADMIN_ROLE_ADD_ERROR); } log.info("添加角色【"+role+"】"); operaterLogService.add("添加角色【"+role.getName()+"】"); return Result.success(true); } /** * 角色編輯頁面 * @param id * @param model * @return */ @RequestMapping(value="/edit",method=RequestMethod.GET) public String edit(@RequestParam(name="id",required=true)Long id,Model model){ List<Menu> findAll = menuService.findAll(); model.addAttribute("topMenus",MenuUtil.getTopMenus(findAll)); model.addAttribute("secondMenus",MenuUtil.getSecondMenus(findAll)); model.addAttribute("thirdMenus",MenuUtil.getThirdMenus(findAll)); Role role = roleService.find(id); model.addAttribute("role", role); model.addAttribute("authorities",JSONArray.toJSON(role.getAuthorities()).toString()); return "admin/role/edit"; } /** * 角色修改表單提交處理 * @param request * @param role * @return */ @RequestMapping(value="/edit",method=RequestMethod.POST) @ResponseBody public Result<Boolean> edit(Role role){ //用統一驗證實體方法驗證是否合法 CodeMsg validate = ValidateEntityUtil.validate(role); if(validate.getCode() != CodeMsg.SUCCESS.getCode()){ return Result.error(validate); } Role existRole = roleService.find(role.getId()); if(existRole == null){ return Result.error(CodeMsg.ADMIN_ROLE_NO_EXIST); } existRole.setName(role.getName()); existRole.setRemark(role.getRemark()); existRole.setStatus(role.getStatus()); existRole.setAuthorities(role.getAuthorities()); if(roleService.save(existRole) == null){ return Result.error(CodeMsg.ADMIN_ROLE_EDIT_ERROR); } log.info("編輯角色【"+role+"】"); operaterLogService.add("編輯角色【"+role.getName()+"】"); return Result.success(true); } /** * 刪除角色 * @param request * @param id * @return */ @RequestMapping(value="delete",method=RequestMethod.POST) @ResponseBody public Result<Boolean> delete(@RequestParam(name="id",required=true)Long id){ try { roleService.delete(id); } catch (Exception e) { // TODO: handle exception return Result.error(CodeMsg.ADMIN_ROLE_DELETE_ERROR); } log.info("編輯角色ID【"+id+"】"); operaterLogService.add("刪除角色ID【"+id+"】"); return Result.success(true); } }
Java中的集合主要分為四類:1、List列表:有序的,可重復的;2、Queue隊列:有序,可重復的;3、Set集合:不可重復;4、Map映射:無序,鍵唯一,值不唯一。
看完上述內容,你們掌握Java如何進行食品溯源系統的實現的方法了嗎?如果還想學到更多技能或想了解更多相關內容,歡迎關注億速云行業資訊頻道,感謝各位的閱讀!
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