spring+springmvc+mybatis 开发JAVA单体应用

2019-11-26 09:31:08

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myshop 概述

myshop项目是根据视频教程 Java 单体应用做的一个练习项目，目前完成了登录功能、用户管理、类别管理后续有时间会继续做其它的功能。趁着双11花了99元一年买了台阿里云服务器，演示地址>> myshop

项目地址 https://gitee.com/yehuabin/myshop

项目结构

my-shop-dependencies：管理jar包的版本，所有项目依赖此项目

my-shop-commons：项目通用工具、实体类

my-shop-domain: POJO类，对于数据库一张表

my-shop-web-admin：后台管理功能

my-shop-web-api、my-shop-web-ui：商城前端展示部分，目前还没开发

BaseDao

public interface BaseDao<T> { int create(T model); int update(T model); int delete(int id); T getById(int id);}

BaseDao定义了通用的数据操作接口其它具体的操作接口都继承该dao

public interface TbUserDao extends BaseDao<TbUser> { TbUser getByUserNameAndPasswrod(Map<String,String> param); List<TbUser> getByPage(PageQuery<TbUserQuery> pageQuery); int getCount(PageQuery<TbUserQuery> pageQuery);}

TbUserDao继承BaseDao并定义了自己特有的一些接口

BaseService

public interface BaseService<T extends BaseEntity> { BaseResult create(T model); T getById(int id); BaseResult update(T model); BaseResult delete(int id);}

BaseService定义通用的服务接口，T 就是某个具体的domain对象

然后给这个通用服务接口定义一个通用的实现 BaseServiceImpl。实现通用的CRUD

public abstract class BaseServiceImpl<T extends BaseEntity,D extends BaseDao<T>> implements BaseService<T> { @Autowired protected D dao; @Override public BaseResult create(T model) {  BaseResult baseResult = EntityValidator.validate(model);  if (!baseResult.isSuccess()) {   return baseResult;  }  model.setCreated(new Date());  model.setUpdated(new Date());  return getBaseResult(dao.create(model),"新增失败"); } public T getById(int id) {  return dao.getById(id); } public BaseResult update(T model) {  BaseResult baseResult = EntityValidator.validate(model);  if (!baseResult.isSuccess()) {   return baseResult;  }  model.setUpdated(new Date());  return getBaseResult(dao.update(model),"更新失败"); } public BaseResult delete(int id) {  return getBaseResult(dao.delete(id),"删除失败"); } private BaseResult getBaseResult(int row,String error){  BaseResult baseResult = BaseResult.success();  if(row<=0){   baseResult=BaseResult.fail(error);  }  return baseResult; }}

用户服务继承BaseService并扩展了两个方法

public interface UserService extends BaseService<TbUser> {  PageResult<TbUser> getByPage(PageQuery<TbUserQuery> pageQuery);  TbUser login(String userName, String password);}

用户服务的具体实现

@Servicepublic class UserServiceImpl extends BaseServiceImpl<TbUser,TbUserDao> implements UserService { @Override public BaseResult create(TbUser tbUser) {  if (StringUtils.isBlank(tbUser.getPassword())) {   return BaseResult.fail("密码不能为空");  }  tbUser.setPassword(md5DigestAsHex(tbUser.getPassword()));  return super.create(tbUser); } @Override public PageResult<TbUser> getByPage(PageQuery<TbUserQuery> pageQuery) {  PageResult<TbUser> result = new PageResult<>();  List<TbUser> list = dao.getByPage(pageQuery);  int count=dao.getCount(pageQuery);  result.setData(list);  result.setRecordsTotal(count);  result.setRecordsFiltered(count);  return result; } @Override public BaseResult update(TbUser tbUser) {  if (StringUtils.isNotBlank(tbUser.getPassword())) {   tbUser.setPassword(md5DigestAsHex(tbUser.getPassword()));  }  return super.update(tbUser); } @Override public TbUser login(String userName, String password) {  Map<String, String> param = new HashMap<>();  param.put("userName", userName);  param.put("password", md5DigestAsHex(password));  System.out.println(param.get("password"));  return dao.getByUserNameAndPasswrod(param); } private String md5DigestAsHex(String password){  return DigestUtils.md5DigestAsHex(password.getBytes()); }}

BaseController

BaseController定义了通用的列表页、表单页、删除操作的跳转

public abstract class BaseController<T extends BaseEntity,S extends BaseService<T>> { @Autowired protected S service; @ModelAttribute public T getModel(Integer id) {  T model=initFormEntity();  if (id != null && id > 0) {   model = service.getById(id);  }  return model; } @RequestMapping("/list") public String list(Model model) {  return getJspPath()+"/list"; } @RequestMapping(value = {"/create", "edit"}, method = RequestMethod.GET) public String form() {  return getJspPath()+"/form"; } @RequestMapping("/detail") public String detail() {  return getJspPath()+"/detail"; } @ResponseBody @RequestMapping("/delete") public BaseResult delete(int id) {  return service.delete(id); } @RequestMapping(value = {"/create", "edit"}, method = RequestMethod.POST) public String form(T entity, Model model) {  BaseResult baseResult;  if (entity.getId() != null && entity.getId() > 0) {   baseResult = service.update(entity);  } else {   baseResult = service.create(entity);  }  //新增或者修改成功返回列表页  if (baseResult.isSuccess()) {   return "redirect:list";  }  //失败显示错误信息  model.addAttribute("result", baseResult);  return getJspPath()+"/form"; } protected abstract T initFormEntity(); protected String getJspPath(){  return getClass().getSimpleName().toLowerCase().replace("controller",""); }}

任何其它模块只要继承BaseController，就可以自动跳转到列表、表单、删除等页面，可以大大减少代码量

具体的UserController只需要实现特有的业务逻辑就可以

@Controller@RequestMapping("/user")public class UserController extends BaseController<TbUser,UserService> { @ResponseBody @RequestMapping("/page") public PageResult<TbUser> page(PageQuery<TbUserQuery> pageQuery, TbUserQuery query) {  pageQuery.setQuery(query);  PageResult<TbUser> tbUsers = service.getByPage(pageQuery);  return tbUsers; } @Override protected TbUser initFormEntity() {  return new TbUser(); }}

总结

以上所述是小编给大家介绍的spring+springmvc+mybatis 开发JAVA单体应用，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对武林网网站的支持！

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