鸿蒙电商购物车全栈项目:核心模块实现
本章节聚焦于鸿蒙电商项目的核心业务逻辑,涵盖用户管理、商品展示及购物车流程。我们将基于现有的项目架构,完成基础功能的闭环开发。
一、用户管理基础与架构
用户管理是应用的基础设施,主要包含注册、登录、信息维护及权限控制。在架构设计上,我们采用分层模式:
- 服务层:处理业务逻辑;
- 数据层:负责存储与管理;
- 接口层:定义交互协议;
- 展示层:负责界面渲染。
这种结构有助于解耦,方便后续扩展与维护。
二、用户管理实战
1. 用户注册实现
首先构建注册工具类,采用单例模式确保全局唯一性。
import user from '@ohos/user';
// 用户注册工具类
export class UserRegistrationUtil {
private static instance: UserRegistrationUtil | null = null;
private userHelper: user.UserHelper | null = null;
// 单例模式
static getInstance(): UserRegistrationUtil {
if (!UserRegistrationUtil.instance) {
UserRegistrationUtil.instance = new UserRegistrationUtil();
}
return UserRegistrationUtil.instance;
}
// 初始化用户注册
async init(): Promise<void> {
if (!this.userHelper) {
this.userHelper = user.createUserHelper();
}
}
// 用户注册
async register(email: string, password: string): Promise<user.UserRegistrationResult> {
if (!this.userHelper) return null;
const result = await this.userHelper.register(email, password);
return result;
}
// 发送验证码
async sendVerificationCode(email: string): Promise<user.SendVerificationCodeResult> {
if (!this.userHelper) return null;
const result = await this.userHelper.sendVerificationCode(email);
return result;
}
}
页面组件中调用上述工具类,并处理 UI 交互:
import { UserRegistrationUtil } from '../utils/UserRegistrationUtil';
@Entry
@Component
struct RegistrationPage {
@State email: string = '';
@State password: string = '';
@State verificationCode: string = '';
build() {
Column({ space: 16 }) {
InputComponent({
placeholder: '请输入邮箱',
value: this.email,
onChange: (value: string) => { this.email = value; },
type: InputType.Email
});
InputComponent({
placeholder: '请输入密码',
value: this.password,
onChange: (value: string) => { this.password = value; },
type: InputType.Password
});
InputComponent({
placeholder: '请输入验证码',
value: this.verificationCode,
onChange: (value: string) => { this.verificationCode = value; },
type: InputType.Normal
});
ButtonComponent({
text: '发送验证码',
onClick: async () => { await this.sendVerificationCode(); },
disabled: !this.email
});
ButtonComponent({
text: '注册',
onClick: async () => { await this.register(); },
disabled: !this.email || !this.password || !this.verificationCode
});
}.width('100%').height('100%').padding(16).backgroundColor('#F5F5F5');
}
aboutToAppear() {
UserRegistrationUtil.getInstance().init();
}
async sendVerificationCode(): Promise<void> {
const result = await UserRegistrationUtil.getInstance().sendVerificationCode(this.email);
if (result.success) {
promptAction.showToast({ message: '验证码发送成功' });
} else {
promptAction.showToast({ message: '验证码发送失败' });
}
}
async register(): Promise<void> {
const result = await UserRegistrationUtil.getInstance().register(this.email, this.password);
if (result.success) {
promptAction.showToast({ message: '注册成功' });
router.pushUrl({ url: '/pages/LoginPage' });
} else {
promptAction.showToast({ message: '注册失败' });
}
}
}


