传统Spring架构采用经典的分层设计:
这种架构在复杂业务系统中逐渐暴露出问题:
OneCode采用注解驱动的组件化架构,彻底改变传统开发模式:
传统Spring MVC控制器示例:
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;
@GetMapping("/list")
public String list(Model model) {
List<User> users = userService.findAll();
model.addAttribute("users", users);
return "user/list";
}
@GetMapping("/edit/{id}")
public String edit(@PathVariable Long id, Model model) {
User user = userService.findById(id);
model.addAttribute("user", user);
return "user/edit";
}
@PostMapping("/save")
public String save(@ModelAttribute User user) {
userService.save(user);
return "redirect:/user/list";
}
// 更多方法...
}
OneCode的ViewBean实现:
@FormAnnotation(
formId = "userForm",
title = "用户管理",
width = 800,
height = 600,
layoutType = LayoutType.GRID,
dataService = "userDataService"
)
public class UserFormViewBean extends CustomFormViewBean {
@FormFieldAnnotation(
fieldName = "id",
label = "用户ID",
type = FieldType.HIDDEN,
primaryKey = true
)
private Long id;
@FormFieldAnnotation(
fieldName = "username",
label = "用户名",
type = FieldType.TEXT,
required = true,
maxLength = 50,
layout = @FormLayoutProperties(row = 1, col = 1, colspan = 1)
)
private String username;
@FormFieldAnnotation(
fieldName = "password",
label = "密码",
type = FieldType.PASSWORD,
required = true,
maxLength = 20,
layout = @FormLayoutProperties(row = 2, col = 1, colspan = 1)
)
private String password;
@FormFieldAnnotation(
fieldName = "email",
label = "邮箱",
type = FieldType.TEXT,
required = true,
regex = "^[A-Za-z0-9+_.-]+@[A-Za-z0-9.-]+$",
layout = @FormLayoutProperties(row = 3, col = 1, colspan = 2)
)
private String email;
// 事件处理方法
@FormEventAnnotation(eventType = EventType.AFTER_SAVE)
public void afterSave(FormEvent event) {
// 保存后的处理逻辑
log.info("用户{}已保存", username);
}
}
转型要点:
传统Spring Service和DAO实现:
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserRepository userRepository;
@Override
@Transactional
public User save(User user) {
// 业务逻辑验证
if (userRepository.findByUsername(user.getUsername()) != null) {
throw new BusinessException("用户名已存在");
}
// 密码加密
user.setPassword(passwordEncoder.encode(user.getPassword()));
return userRepository.save(user);
}
@Override
public List<User> findAll() {
return userRepository.findAll();
}
// 更多方法...
}
public interface UserRepository extends JpaRepository<User, Long> {
User findByUsername(String username);
}
OneCode的数据服务实现:
@DataServiceAnnotation(
serviceId = "userDataService",
entityClass = User.class,
dataSource = "mainDataSource"
)
public class UserDataService extends BaseDataService<User> {
@Override
@DataOperationAnnotation(type = OperationType.SAVE, validate = true, transactional = true)
public User save(User entity) {
// 业务逻辑验证
if (existsByUsername(entity.getUsername())) {
throw new BusinessException("用户名已存在");
}
// 密码加密
entity.setPassword(passwordEncoder.encode(entity.getPassword()));
return super.save(entity);
}
@QueryAnnotation("SELECT u FROM User u WHERE u.username = :username")
public User findByUsername(@Param("username") String username) {
return executeQuerySingleResult(username);
}
}
转型要点:
传统Spring视图(Thymeleaf模板):
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>用户编辑</title>
</head>
<body>
<form th:action="@{/user/save}" th:object="${user}" method="post">
<input type="hidden" th:field="*{id}"/>
<div>
<label>用户名:</label>
<input type="text" th:field="*{username}" required/>
</div>
<div>
<label>密码:</label>
<input type="password" th:field="*{password}" required/>
</div>
<div>
<label>邮箱:</label>
<input type="text" th:field="*{email}" required/>
</div>
<div>
<button type="submit">保存</button>
<a th:href="@{/user/list}">取消</a>
</div>
</form>
</body>
</html>
OneCode的组件化视图无需单独模板文件,视图完全由ViewBean的注解定义:
转型要点:
挑战:开发人员习惯XML或JavaConfig配置,对注解驱动开发不熟悉。
解决方案:
挑战:复杂的业务规则和事务管理难以直接迁移。
解决方案:
挑战:需要与未迁移的遗留系统共存和交互。
解决方案:
挑战:开发人员对新框架有抵触,担心增加学习成本。
解决方案:
某金融科技公司迁移案例:
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。
原创声明:本文系作者授权腾讯云开发者社区发表,未经许可,不得转载。
如有侵权,请联系 cloudcommunity@tencent.com 删除。