雨霖铃
c40b66b703
主要更新： - 添加字段必填/选填设置和空值率配置 - 移除标签管理系统（20条规则无需标签） - 添加组合策略保证唯一性生成 - 添加价格生成器（真实分布/心理定价） - 添加场景化生成器（年龄/数量/评分/折扣/库存） - 更新所有文档移除emoji，使用纯文字 - 更新类型定义和生成逻辑
1525 lines
40 KiB
Markdown
1525 lines
40 KiB
Markdown
# 技术实现
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## 技术栈
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| 技术 | 用途 | 版本 |
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| ------------ | -------- | ---- |
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| React | UI 框架 | 19.x |
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| TypeScript | 类型系统 | 5.x |
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| Tailwind CSS | 样式 | 3.x |
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| Web Worker | 后台生成 | - |
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| localStorage | 本地存储 | - |
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---
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## 项目结构
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```
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src/pages/TestDataGenerator/
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├── index.tsx # 主页面
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├── components/
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│ ├── FieldList.tsx # 字段列表
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│ ├── FieldItem.tsx # 单个字段项
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│ ├── FieldEditor.tsx # 字段编辑器
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│ ├── GeneratorSelector.tsx # 生成器选择器
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│ ├── GeneratorConfig.tsx # 参数配置
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│ ├── DataPreview.tsx # 数据预览
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│ ├── GenerateOptions.tsx # 生成选项
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│ ├── GenerateButton.tsx # 生成按钮
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│ ├── ExportPanel.tsx # 导出面板
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│ └── RuleManager.tsx # 规则管理
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├── generators/
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│ ├── index.ts # 生成器入口
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│ ├── personal.ts # 个人信息生成器
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│ ├── business.ts # 业务数据生成器
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│ ├── technical.ts # 技术数据生成器
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│ └── basic.ts # 基础类型生成器
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├── storage/
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│ ├── ruleStorage.ts # 规则存储
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│ └── index.ts # 存储入口
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├── worker/
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│ └── generator.worker.ts # Web Worker
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├── types/
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│ └── index.ts # 类型定义
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└── utils/
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├── validator.ts # 规则校验
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├── exporter.ts # 数据导出
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└── helpers.ts # 工具函数
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```
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---
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## 类型定义
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### 核心类型
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```typescript
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// 字段配置
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export interface FieldConfig {
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id: string;
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name: string;
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generator: string;
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params: Record<string, any>;
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unique: boolean;
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required: boolean; // 是否必填
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emptyRate?: number; // 选填字段的空值概率（0-100），仅当 required=false 时生效
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}
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// 规则配置
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export interface DataRule {
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id: string;
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name: string;
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description?: string;
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fields: FieldConfig[];
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options: {
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total: number;
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format: 'json' | 'csv' | 'sql' | 'typescript';
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defaultEmptyRate: number; // 默认空值率（0-100），用于未设置 emptyRate 的选填字段
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};
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metadata: {
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createdAt: number;
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updatedAt: number;
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lastUsedAt?: number;
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useCount: number;
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};
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}
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// 生成器定义
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export interface GeneratorDefinition {
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name: string;
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label: string;
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description: string;
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category: 'personal' | 'business' | 'technical' | 'basic';
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icon: string;
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params: GeneratorParam[];
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// 普通生成方法
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generate: (params: Record<string, any>) => any;
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// 索引生成方法（可选，用于大数据量唯一性生成）
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generateAtIndex?: (params: Record<string, any>, index: number) => any;
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}
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// 生成器参数
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export interface GeneratorParam {
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name: string;
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label: string;
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type: 'string' | 'number' | 'boolean' | 'select' | 'array';
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required: boolean;
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default?: any;
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options?: { label: string; value: any }[];
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}
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// 生成结果
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export interface GenerateResult {
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success: boolean;
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data: any[];
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errors?: string[];
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stats: {
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total: number;
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generated: number;
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failed: number;
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duration: number;
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};
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}
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```
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---
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## 核心模块
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### 1. 生成器系统
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```typescript
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// generators/index.ts
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import { personalGenerators } from './personal';
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import { businessGenerators } from './business';
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import { technicalGenerators } from './technical';
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import { basicGenerators } from './basic';
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export const generators = {
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...personalGenerators,
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...businessGenerators,
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...technicalGenerators,
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...basicGenerators,
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};
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export const generatorCategories = [
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{
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key: 'personal',
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label: '个人信息',
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generators: ['chineseName', 'email', 'chinesePhone', 'idCard', 'chineseAddress'],
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},
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{
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key: 'business',
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label: '业务数据',
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generators: ['orderId', 'price', 'date', 'status'],
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},
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{
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key: 'technical',
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label: '技术数据',
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generators: ['uuid', 'ipv4', 'url'],
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},
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{
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key: 'basic',
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label: '基础类型',
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generators: ['randomInt', 'randomFloat', 'randomString', 'fromList'],
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},
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];
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```
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### 2. 生成器实现
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```typescript
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// generators/personal.ts
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export const personalGenerators = {
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chineseName: {
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name: 'chineseName',
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label: '中文姓名',
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description: '生成中文姓名，如张三、李四',
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icon: '👤',
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params: [
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{
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name: 'surnamePool',
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label: '姓氏池',
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type: 'string',
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required: false,
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default: '百家姓前100',
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},
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{
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name: 'givenNameLength',
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label: '名字长度',
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type: 'object',
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required: false,
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default: { min: 1, max: 2 },
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},
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],
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generate: (params: any) => {
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const surnames =
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'王李张刘陈杨赵黄周吴徐孙胡朱高林何郭马罗梁宋郑谢韩唐冯于董萧程曹袁邓许傅沈曾彭吕苏卢蒋蔡贾丁魏薛叶阎余潘杜戴夏钟汪田任姜范方石姚谭廖邹熊金陆郝孔白崔康毛邱秦江史顾侯邵孟龙万段雷钱汤尹黎易常武乔贺赖龚文';
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const givenNames =
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'伟芳娜秀英敏静丽强磊洋勇艳杰娟涛超明华雪飞平刚慧建华玲桂英旭峰辉志强建平婷欣怡梦琪雅琴晓红';
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const surname = surnames[Math.floor(Math.random() * surnames.length)];
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const { min, max } = params.givenNameLength || { min: 1, max: 2 };
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const length = Math.floor(Math.random() * (max - min + 1)) + min;
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let givenName = '';
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for (let i = 0; i < length; i++) {
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givenName += givenNames[Math.floor(Math.random() * givenNames.length)];
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}
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return surname + givenName;
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},
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// 索引生成（唯一性保证）
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generateAtIndex: (params: any, index: number) => {
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const surnames =
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'王李张刘陈杨赵黄周吴徐孙胡朱高林何郭马罗梁宋郑谢韩唐冯于董萧程曹袁邓许傅沈曾彭吕苏卢蒋蔡贾丁魏薛叶阎余潘杜戴夏钟汪田任姜范方石姚谭廖邹熊金陆郝孔白崔康毛邱秦江史顾侯邵孟龙万段雷钱汤尹黎易常武乔贺赖龚文';
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const givenNames =
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'伟芳娜秀英敏静丽强磊洋勇艳杰娟涛超明华雪飞平刚慧建华玲桂英旭峰辉志强建平婷欣怡梦琪雅琴晓红';
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const surname = surnames[index % surnames.length];
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const givenName = givenNames[index % givenNames.length];
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return surname + givenName;
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},
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},
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email: {
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name: 'email',
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label: '邮箱地址',
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description: '生成邮箱地址',
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icon: '📧',
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params: [
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{
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name: 'domains',
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label: '域名列表',
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type: 'array',
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required: false,
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default: ['qq.com', '163.com', '126.com', 'gmail.com', 'outlook.com'],
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},
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],
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generate: (params: any) => {
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const domains = params.domains || ['qq.com', '163.com'];
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const domain = domains[Math.floor(Math.random() * domains.length)];
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const chars = 'abcdefghijklmnopqrstuvwxyz0123456789';
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let localPart = '';
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const length = 6 + Math.floor(Math.random() * 6);
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for (let i = 0; i < length; i++) {
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localPart += chars[Math.floor(Math.random() * chars.length)];
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}
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return `${localPart}@${domain}`;
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},
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// 索引生成（唯一性保证）
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generateAtIndex: (params: any, index: number) => {
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const domains = params.domains || ['qq.com', '163.com'];
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const domain = domains[index % domains.length];
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// 使用索引生成唯一用户名
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const localPart = `user${String(index).padStart(6, '0')}`;
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return `${localPart}@${domain}`;
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},
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},
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chinesePhone: {
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name: 'chinesePhone',
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label: '中国手机号',
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description: '生成11位中国手机号',
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icon: '📱',
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params: [
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{
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name: 'prefix',
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label: '手机号前缀',
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type: 'array',
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required: false,
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default: [
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'130',
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'131',
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'132',
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'133',
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'134',
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'135',
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'136',
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'137',
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'138',
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'139',
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'150',
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'151',
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'152',
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'153',
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'155',
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'156',
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'157',
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'158',
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'159',
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'180',
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'181',
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'182',
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'183',
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'184',
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'185',
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'186',
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'187',
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'188',
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'189',
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],
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},
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],
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// 普通生成（随机）
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generate: (params: any) => {
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const prefixes = params.prefix || ['138', '139', '150', '151'];
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const prefix = prefixes[Math.floor(Math.random() * prefixes.length)];
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let suffix = '';
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for (let i = 0; i < 8; i++) {
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suffix += Math.floor(Math.random() * 10);
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}
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return prefix + suffix;
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},
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// 索引生成（唯一性保证）
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generateAtIndex: (params: any, index: number) => {
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const prefixes = params.prefix || ['138', '139', '150', '151'];
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const prefix = prefixes[index % prefixes.length];
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// 使用索引生成唯一后缀
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const suffix = String(10000000 + index).slice(-8);
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return prefix + suffix;
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},
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},
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age: {
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name: 'age',
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label: '年龄',
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description: '生成真实分布的年龄',
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icon: '🎂',
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params: [
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{
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name: 'min',
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label: '最小年龄',
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type: 'number',
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required: false,
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default: 1,
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},
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{
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name: 'max',
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label: '最大年龄',
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type: 'number',
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required: false,
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default: 100,
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},
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{
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name: 'strategy',
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label: '生成策略',
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type: 'select',
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required: false,
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default: 'realistic',
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options: [
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{ label: '真实分布（推荐）', value: 'realistic' },
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{ label: '均匀随机', value: 'uniform' },
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{ label: '人口比例', value: 'demographic' },
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],
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},
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],
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generate: (params: any) => {
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const { min = 1, max = 100, strategy = 'realistic' } = params;
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let value: number;
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switch (strategy) {
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case 'realistic':
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// 正态分布：均值 35，标准差 10
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value = normalRandom(35, 10);
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break;
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case 'demographic':
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// 人口比例分布：年轻人多，老年人少
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value = demographicRandom(min, max);
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break;
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default:
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// 均匀分布
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value = Math.random() * (max - min) + min;
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}
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return Math.round(Math.max(min, Math.min(max, value)));
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},
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generateAtIndex: (params: any, index: number) => {
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const { min = 1, max = 100 } = params;
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const step = (max - min) / 10000;
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return Math.round(min + step * index);
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},
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},
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};
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```
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```typescript
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// generators/business.ts
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export const businessGenerators = {
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price: {
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name: 'price',
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label: '价格',
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description: '生成真实的价格数据',
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icon: '💰',
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params: [
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{
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name: 'min',
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label: '最低价',
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type: 'number',
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required: true,
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default: 1,
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},
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{
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name: 'max',
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label: '最高价',
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type: 'number',
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required: true,
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default: 9999,
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},
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{
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name: 'decimals',
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label: '小数位数',
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type: 'select',
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required: false,
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default: 2,
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options: [
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{ label: '0 位（整数）', value: 0 },
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{ label: '1 位', value: 1 },
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{ label: '2 位（常见）', value: 2 },
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],
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},
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{
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name: 'strategy',
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label: '生成策略',
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type: 'select',
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required: false,
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default: 'realistic',
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options: [
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{ label: '真实分布（推荐）', value: 'realistic' },
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{ label: '均匀随机', value: 'uniform' },
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{ label: '心理定价', value: 'psychological' },
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],
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},
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],
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// 普通生成（随机）
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generate: (params: any) => {
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const { min = 1, max = 9999, decimals = 2, strategy = 'realistic' } = params;
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let value: number;
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switch (strategy) {
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case 'psychological':
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// 心理定价：.99, .98, .95 结尾
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value = generatePsychologicalPrice(min, max);
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break;
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case 'realistic':
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// 真实分布：对数正态分布
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value = generateRealisticPrice(min, max);
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break;
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default:
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// 均匀分布
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value = Math.random() * (max - min) + min;
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}
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return parseFloat(value.toFixed(decimals));
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},
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// 索引生成（唯一性保证）
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generateAtIndex: (params: any, index: number) => {
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const { min = 1, max = 9999, decimals = 2, strategy = 'realistic' } = params;
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let value: number;
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// 索引生成时使用均匀分布，保证唯一性
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const step = (max - min) / 10000;
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value = min + step * index;
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// 确保在区间内
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value = Math.max(min, Math.min(max, value));
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return parseFloat(value.toFixed(decimals));
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},
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},
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orderId: {
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name: 'orderId',
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label: '订单号',
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description: '生成订单号',
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icon: '📋',
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params: [
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{
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name: 'prefix',
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label: '前缀',
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type: 'string',
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required: false,
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default: 'ORD',
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},
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{
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name: 'length',
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label: '编号长度',
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type: 'number',
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required: false,
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default: 12,
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},
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],
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generate: (params: any) => {
|
||
const prefix = params.prefix || 'ORD';
|
||
const length = params.length || 12;
|
||
let suffix = '';
|
||
for (let i = 0; i < length; i++) {
|
||
suffix += Math.floor(Math.random() * 10);
|
||
}
|
||
return `${prefix}${suffix}`;
|
||
},
|
||
generateAtIndex: (params: any, index: number) => {
|
||
const prefix = params.prefix || 'ORD';
|
||
const length = params.length || 12;
|
||
const suffix = String(index).padStart(length, '0');
|
||
return `${prefix}${suffix}`;
|
||
},
|
||
},
|
||
|
||
date: {
|
||
name: 'date',
|
||
label: '日期',
|
||
description: '生成随机日期',
|
||
icon: '📅',
|
||
params: [
|
||
{
|
||
name: 'start',
|
||
label: '开始日期',
|
||
type: 'string',
|
||
required: false,
|
||
default: '2020-01-01',
|
||
},
|
||
{
|
||
name: 'end',
|
||
label: '结束日期',
|
||
type: 'string',
|
||
required: false,
|
||
default: '2024-12-31',
|
||
},
|
||
{
|
||
name: 'format',
|
||
label: '日期格式',
|
||
type: 'select',
|
||
required: false,
|
||
default: 'YYYY-MM-DD',
|
||
options: [
|
||
{ label: 'YYYY-MM-DD', value: 'YYYY-MM-DD' },
|
||
{ label: 'YYYY/MM/DD', value: 'YYYY/MM/DD' },
|
||
{ label: 'DD/MM/YYYY', value: 'DD/MM/YYYY' },
|
||
{ label: '时间戳', value: 'timestamp' },
|
||
],
|
||
},
|
||
],
|
||
generate: (params: any) => {
|
||
const start = new Date(params.start || '2020-01-01').getTime();
|
||
const end = new Date(params.end || '2024-12-31').getTime();
|
||
const timestamp = start + Math.random() * (end - start);
|
||
return formatDate(new Date(timestamp), params.format || 'YYYY-MM-DD');
|
||
},
|
||
generateAtIndex: (params: any, index: number) => {
|
||
const start = new Date(params.start || '2020-01-01').getTime();
|
||
const end = new Date(params.end || '2024-12-31').getTime();
|
||
const step = (end - start) / 10000;
|
||
const timestamp = start + step * index;
|
||
return formatDate(new Date(timestamp), params.format || 'YYYY-MM-DD');
|
||
},
|
||
},
|
||
|
||
status: {
|
||
name: 'status',
|
||
label: '状态',
|
||
description: '生成随机状态',
|
||
icon: '🔄',
|
||
params: [
|
||
{
|
||
name: 'options',
|
||
label: '状态选项',
|
||
type: 'array',
|
||
required: false,
|
||
default: ['待处理', '处理中', '已完成', '已取消'],
|
||
},
|
||
],
|
||
generate: (params: any) => {
|
||
const options = params.options || ['待处理', '处理中', '已完成', '已取消'];
|
||
return options[Math.floor(Math.random() * options.length)];
|
||
},
|
||
generateAtIndex: (params: any, index: number) => {
|
||
const options = params.options || ['待处理', '处理中', '已完成', '已取消'];
|
||
return options[index % options.length];
|
||
},
|
||
},
|
||
|
||
quantity: {
|
||
name: 'quantity',
|
||
label: '数量',
|
||
description: '生成真实分布的数量',
|
||
icon: '📦',
|
||
params: [
|
||
{
|
||
name: 'min',
|
||
label: '最小值',
|
||
type: 'number',
|
||
required: false,
|
||
default: 1,
|
||
},
|
||
{
|
||
name: 'max',
|
||
label: '最大值',
|
||
type: 'number',
|
||
required: false,
|
||
default: 100,
|
||
},
|
||
{
|
||
name: 'strategy',
|
||
label: '生成策略',
|
||
type: 'select',
|
||
required: false,
|
||
default: 'realistic',
|
||
options: [
|
||
{ label: '真实分布（推荐）', value: 'realistic' },
|
||
{ label: '批发模式', value: 'bulk' },
|
||
{ label: '均匀随机', value: 'uniform' },
|
||
],
|
||
},
|
||
],
|
||
generate: (params: any) => {
|
||
const { min = 1, max = 100, strategy = 'realistic' } = params;
|
||
let value: number;
|
||
|
||
switch (strategy) {
|
||
case 'bulk':
|
||
// 批发模式：10-100 之间均匀分布
|
||
value = Math.random() * 90 + 10;
|
||
break;
|
||
case 'realistic':
|
||
// 泊松分布：大多数购买 1-3 件
|
||
value = poissonRandom(2);
|
||
break;
|
||
default:
|
||
// 均匀分布
|
||
value = Math.random() * (max - min) + min;
|
||
}
|
||
|
||
return Math.round(Math.max(min, Math.min(max, value)));
|
||
},
|
||
generateAtIndex: (params: any, index: number) => {
|
||
const { min = 1, max = 100 } = params;
|
||
const step = (max - min) / 10000;
|
||
return Math.round(min + step * index);
|
||
},
|
||
},
|
||
|
||
rating: {
|
||
name: 'rating',
|
||
label: '评分',
|
||
description: '生成真实分布的评分',
|
||
icon: '⭐',
|
||
params: [
|
||
{
|
||
name: 'min',
|
||
label: '最低分',
|
||
type: 'number',
|
||
required: false,
|
||
default: 1,
|
||
},
|
||
{
|
||
name: 'max',
|
||
label: '最高分',
|
||
type: 'number',
|
||
required: false,
|
||
default: 5,
|
||
},
|
||
{
|
||
name: 'decimals',
|
||
label: '小数位数',
|
||
type: 'number',
|
||
required: false,
|
||
default: 1,
|
||
},
|
||
{
|
||
name: 'strategy',
|
||
label: '生成策略',
|
||
type: 'select',
|
||
required: false,
|
||
default: 'realistic',
|
||
options: [
|
||
{ label: '真实分布（推荐）', value: 'realistic' },
|
||
{ label: '严格评价', value: 'strict' },
|
||
{ label: '均匀随机', value: 'uniform' },
|
||
],
|
||
},
|
||
],
|
||
generate: (params: any) => {
|
||
const { min = 1, max = 5, decimals = 1, strategy = 'realistic' } = params;
|
||
let value: number;
|
||
|
||
switch (strategy) {
|
||
case 'strict':
|
||
// 严格评价：偏向低分
|
||
value = skewedRandom(min, max, 0.3);
|
||
break;
|
||
case 'realistic':
|
||
// 真实分布：偏向高分（电商平台常见）
|
||
value = skewedRandom(min, max, 0.7);
|
||
break;
|
||
default:
|
||
// 均匀分布
|
||
value = Math.random() * (max - min) + min;
|
||
}
|
||
|
||
return parseFloat(Math.max(min, Math.min(max, value)).toFixed(decimals));
|
||
},
|
||
generateAtIndex: (params: any, index: number) => {
|
||
const { min = 1, max = 5, decimals = 1 } = params;
|
||
const step = (max - min) / 10000;
|
||
return parseFloat((min + step * index).toFixed(decimals));
|
||
},
|
||
},
|
||
|
||
discount: {
|
||
name: 'discount',
|
||
label: '折扣',
|
||
description: '生成真实分布的折扣',
|
||
icon: '🏷️',
|
||
params: [
|
||
{
|
||
name: 'min',
|
||
label: '最低折扣',
|
||
type: 'number',
|
||
required: false,
|
||
default: 0.1,
|
||
},
|
||
{
|
||
name: 'max',
|
||
label: '最高折扣',
|
||
type: 'number',
|
||
required: false,
|
||
default: 0.9,
|
||
},
|
||
{
|
||
name: 'strategy',
|
||
label: '生成策略',
|
||
type: 'select',
|
||
required: false,
|
||
default: 'psychological',
|
||
options: [
|
||
{ label: '心理定价（推荐）', value: 'psychological' },
|
||
{ label: '清仓模式', value: 'clearance' },
|
||
{ label: '均匀随机', value: 'uniform' },
|
||
],
|
||
},
|
||
],
|
||
generate: (params: any) => {
|
||
const { min = 0.1, max = 0.9, strategy = 'psychological' } = params;
|
||
let value: number;
|
||
|
||
switch (strategy) {
|
||
case 'clearance':
|
||
// 清仓模式：大折扣区间（3-7折）
|
||
value = Math.random() * 0.4 + 0.3;
|
||
break;
|
||
case 'psychological':
|
||
// 心理定价：常见折扣点
|
||
value = generatePsychologicalDiscount(min, max);
|
||
break;
|
||
default:
|
||
// 均匀分布
|
||
value = Math.random() * (max - min) + min;
|
||
}
|
||
|
||
return parseFloat(Math.max(min, Math.min(max, value)).toFixed(2));
|
||
},
|
||
generateAtIndex: (params: any, index: number) => {
|
||
const { min = 0.1, max = 0.9 } = params;
|
||
const step = (max - min) / 10000;
|
||
return parseFloat((min + step * index).toFixed(2));
|
||
},
|
||
},
|
||
|
||
stock: {
|
||
name: 'stock',
|
||
label: '库存',
|
||
description: '生成真实分布的库存',
|
||
icon: '🏭',
|
||
params: [
|
||
{
|
||
name: 'min',
|
||
label: '最小库存',
|
||
type: 'number',
|
||
required: false,
|
||
default: 0,
|
||
},
|
||
{
|
||
name: 'max',
|
||
label: '最大库存',
|
||
type: 'number',
|
||
required: false,
|
||
default: 1000,
|
||
},
|
||
{
|
||
name: 'strategy',
|
||
label: '生成策略',
|
||
type: 'select',
|
||
required: false,
|
||
default: 'realistic',
|
||
options: [
|
||
{ label: '真实分布（推荐）', value: 'realistic' },
|
||
{ label: '热销商品', value: 'hot' },
|
||
{ label: '均匀随机', value: 'uniform' },
|
||
],
|
||
},
|
||
],
|
||
generate: (params: any) => {
|
||
const { min = 0, max = 1000, strategy = 'realistic' } = params;
|
||
let value: number;
|
||
|
||
switch (strategy) {
|
||
case 'hot':
|
||
// 热销商品：低库存（0-50）
|
||
value = Math.random() * 50;
|
||
break;
|
||
case 'realistic':
|
||
// 真实分布：指数分布，大多数库存较少
|
||
value = exponentialRandom(min, max);
|
||
break;
|
||
default:
|
||
// 均匀分布
|
||
value = Math.random() * (max - min) + min;
|
||
}
|
||
|
||
return Math.round(Math.max(min, Math.min(max, value)));
|
||
},
|
||
generateAtIndex: (params: any, index: number) => {
|
||
const { min = 0, max = 1000 } = params;
|
||
const step = (max - min) / 10000;
|
||
return Math.round(min + step * index);
|
||
},
|
||
},
|
||
};
|
||
|
||
// 辅助函数：生成心理定价
|
||
function generatePsychologicalPrice(min: number, max: number): number {
|
||
let price = Math.random() * (max - min) + min;
|
||
|
||
const strategies = [
|
||
(p: number) => Math.floor(p) + 0.99,
|
||
(p: number) => Math.floor(p) + 0.98,
|
||
(p: number) => Math.floor(p) + 0.95,
|
||
(p: number) => Math.floor(p / 10) * 10 + 9.9,
|
||
];
|
||
|
||
const strategy = strategies[Math.floor(Math.random() * strategies.length)];
|
||
price = strategy(price);
|
||
|
||
return Math.max(min, Math.min(max, price));
|
||
}
|
||
|
||
// 辅助函数：生成真实分布价格（对数正态分布）
|
||
function generateRealisticPrice(min: number, max: number): number {
|
||
const mu = Math.log((min + max) / 2);
|
||
const sigma = 0.5;
|
||
|
||
const u1 = Math.random();
|
||
const u2 = Math.random();
|
||
const z = Math.sqrt(-2 * Math.log(u1)) * Math.cos(2 * Math.PI * u2);
|
||
|
||
let value = Math.exp(mu + sigma * z);
|
||
value = Math.max(min, Math.min(max, value));
|
||
|
||
return value;
|
||
}
|
||
|
||
// 辅助函数：格式化日期
|
||
function formatDate(date: Date, format: string): string {
|
||
const year = date.getFullYear();
|
||
const month = String(date.getMonth() + 1).padStart(2, '0');
|
||
const day = String(date.getDate()).padStart(2, '0');
|
||
|
||
if (format === 'timestamp') {
|
||
return date.getTime().toString();
|
||
}
|
||
|
||
return format.replace('YYYY', year.toString()).replace('MM', month).replace('DD', day);
|
||
}
|
||
|
||
// 辅助函数：正态分布随机数
|
||
function normalRandom(mean: number, stddev: number): number {
|
||
const u1 = Math.random();
|
||
const u2 = Math.random();
|
||
const z = Math.sqrt(-2 * Math.log(u1)) * Math.cos(2 * Math.PI * u2);
|
||
return mean + stddev * z;
|
||
}
|
||
|
||
// 辅助函数：人口比例分布（模拟真实年龄分布）
|
||
function demographicRandom(min: number, max: number): number {
|
||
// 中国人口年龄分布大致比例（简化版）
|
||
const weights = [
|
||
{ age: 5, weight: 0.05 }, // 0-5岁
|
||
{ age: 15, weight: 0.12 }, // 6-15岁
|
||
{ age: 25, weight: 0.18 }, // 16-25岁
|
||
{ age: 35, weight: 0.2 }, // 26-35岁
|
||
{ age: 45, weight: 0.18 }, // 36-45岁
|
||
{ age: 55, weight: 0.15 }, // 46-55岁
|
||
{ age: 65, weight: 0.08 }, // 56-65岁
|
||
{ age: 80, weight: 0.04 }, // 66-80岁
|
||
];
|
||
|
||
// 按权重随机选择年龄段
|
||
const totalWeight = weights.reduce((sum, w) => sum + w.weight, 0);
|
||
let random = Math.random() * totalWeight;
|
||
|
||
for (const w of weights) {
|
||
if (random <= w.weight) {
|
||
// 在该年龄段内均匀分布
|
||
const ageMin = Math.max(min, w.age - 10);
|
||
const ageMax = Math.min(max, w.age);
|
||
return Math.random() * (ageMax - ageMin) + ageMin;
|
||
}
|
||
random -= w.weight;
|
||
}
|
||
|
||
return Math.random() * (max - min) + min;
|
||
}
|
||
|
||
// 辅助函数：泊松分布随机数（模拟购买数量）
|
||
function poissonRandom(lambda: number): number {
|
||
let L = Math.exp(-lambda);
|
||
let k = 0;
|
||
let p = 1;
|
||
|
||
do {
|
||
k++;
|
||
p *= Math.random();
|
||
} while (p > L);
|
||
|
||
return k - 1;
|
||
}
|
||
|
||
// 辅助函数：偏态分布随机数（模拟评分）
|
||
function skewedRandom(min: number, max: number, skewness: number): number {
|
||
// 使用 beta 分布的简化实现
|
||
const u = Math.random();
|
||
const v = Math.random();
|
||
|
||
// 根据偏度调整
|
||
let value;
|
||
if (skewness > 0.5) {
|
||
// 右偏（偏向高分）
|
||
value = Math.pow(u, 1 - skewness) * (max - min) + min;
|
||
} else {
|
||
// 左偏（偏向低分）
|
||
value = (1 - Math.pow(v, skewness)) * (max - min) + min;
|
||
}
|
||
|
||
return Math.max(min, Math.min(max, value));
|
||
}
|
||
|
||
// 辅助函数：指数分布随机数（模拟库存）
|
||
function exponentialRandom(min: number, max: number): number {
|
||
const lambda = 0.5; // 指数分布参数
|
||
const u = Math.random();
|
||
const value = -Math.log(1 - u) / lambda;
|
||
|
||
// 缩放到指定区间
|
||
const normalized = value / 10; // 归一化
|
||
return normalized * (max - min) + min;
|
||
}
|
||
|
||
// 辅助函数：生成心理定价折扣
|
||
function generatePsychologicalDiscount(min: number, max: number): number {
|
||
// 常见折扣点：8折、85折、9折、95折
|
||
const commonDiscounts = [0.8, 0.85, 0.9, 0.95, 0.7, 0.75];
|
||
|
||
// 随机选择一个常见折扣，或生成随机折扣
|
||
if (Math.random() < 0.7) {
|
||
// 70% 概率使用常见折扣
|
||
const discount = commonDiscounts[Math.floor(Math.random() * commonDiscounts.length)];
|
||
return Math.max(min, Math.min(max, discount));
|
||
} else {
|
||
// 30% 概率生成随机折扣
|
||
return Math.random() * (max - min) + min;
|
||
}
|
||
}
|
||
```
|
||
|
||
### 3. 数据生成引擎
|
||
|
||
```typescript
|
||
// worker/generator.worker.ts
|
||
import { generators } from '../generators';
|
||
|
||
self.onmessage = function (e) {
|
||
const { rule, batchSize } = e.data;
|
||
const results = [];
|
||
|
||
for (let i = 0; i < rule.fields.length; i++) {
|
||
const field = rule.fields[i];
|
||
const generator = generators[field.generator];
|
||
|
||
if (!generator) {
|
||
self.postMessage({
|
||
type: 'error',
|
||
field: field.name,
|
||
error: `生成器 ${field.generator} 不存在`,
|
||
});
|
||
continue;
|
||
}
|
||
}
|
||
|
||
// 生成数据
|
||
const data = [];
|
||
const usedValues: Record<string, Set<any>> = {};
|
||
|
||
// 根据总数量决定策略
|
||
const isLargeBatch = rule.options.total > 1000;
|
||
|
||
for (let i = 0; i < rule.options.total; i++) {
|
||
const record: Record<string, any> = {};
|
||
|
||
for (const field of rule.fields) {
|
||
const generator = generators[field.generator];
|
||
|
||
// 判断是否需要生成数据
|
||
const shouldGenerate =
|
||
field.required || Math.random() * 100 >= (field.emptyRate ?? rule.options.defaultEmptyRate);
|
||
|
||
if (!shouldGenerate) {
|
||
record[field.name] = null;
|
||
continue;
|
||
}
|
||
|
||
let value;
|
||
|
||
if (field.unique && isLargeBatch) {
|
||
// 策略1：大数据量 + 唯一性 → 索引生成（高性能）
|
||
value = generator.generateAtIndex?.(field.params, i) ?? generator.generate(field.params);
|
||
} else if (field.unique) {
|
||
// 策略2：小数据量 + 唯一性 → 随机生成 + 重试
|
||
let retryCount = 0;
|
||
const maxRetry = 100;
|
||
|
||
do {
|
||
value = generator.generate(field.params);
|
||
|
||
if (usedValues[field.name]?.has(value)) {
|
||
retryCount++;
|
||
value = undefined;
|
||
}
|
||
} while (value === undefined && retryCount < maxRetry);
|
||
} else {
|
||
// 策略3：非唯一性 → 普通生成
|
||
value = generator.generate(field.params);
|
||
}
|
||
|
||
if (value !== undefined) {
|
||
record[field.name] = value;
|
||
|
||
if (field.unique) {
|
||
if (!usedValues[field.name]) {
|
||
usedValues[field.name] = new Set();
|
||
}
|
||
usedValues[field.name].add(value);
|
||
}
|
||
} else {
|
||
record[field.name] = null;
|
||
}
|
||
}
|
||
|
||
data.push(record);
|
||
|
||
// 发送进度
|
||
if (i % batchSize === 0) {
|
||
self.postMessage({
|
||
type: 'progress',
|
||
current: i + 1,
|
||
total: rule.options.total,
|
||
});
|
||
}
|
||
}
|
||
|
||
self.postMessage({
|
||
type: 'complete',
|
||
data,
|
||
});
|
||
};
|
||
```
|
||
|
||
### 4. 规则存储
|
||
|
||
```typescript
|
||
// storage/ruleStorage.ts
|
||
import type { DataRule } from '../types';
|
||
|
||
const STORAGE_KEY = 'testDataGenerator_rules';
|
||
|
||
export class RuleStorage {
|
||
// 获取所有规则
|
||
getAll(): DataRule[] {
|
||
const data = localStorage.getItem(STORAGE_KEY);
|
||
return data ? JSON.parse(data) : [];
|
||
}
|
||
|
||
// 获取单个规则
|
||
getById(id: string): DataRule | null {
|
||
const rules = this.getAll();
|
||
return rules.find((r) => r.id === id) || null;
|
||
}
|
||
|
||
// 保存规则
|
||
save(rule: Omit<DataRule, 'id' | 'metadata'>): DataRule {
|
||
const rules = this.getAll();
|
||
|
||
const newRule: DataRule = {
|
||
...rule,
|
||
id: `rule_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`,
|
||
metadata: {
|
||
createdAt: Date.now(),
|
||
updatedAt: Date.now(),
|
||
useCount: 0,
|
||
},
|
||
};
|
||
|
||
rules.push(newRule);
|
||
localStorage.setItem(STORAGE_KEY, JSON.stringify(rules));
|
||
|
||
return newRule;
|
||
}
|
||
|
||
// 更新规则
|
||
update(id: string, updates: Partial<DataRule>): DataRule | null {
|
||
const rules = this.getAll();
|
||
const index = rules.findIndex((r) => r.id === id);
|
||
|
||
if (index === -1) return null;
|
||
|
||
rules[index] = {
|
||
...rules[index],
|
||
...updates,
|
||
metadata: {
|
||
...rules[index].metadata,
|
||
updatedAt: Date.now(),
|
||
},
|
||
};
|
||
|
||
localStorage.setItem(STORAGE_KEY, JSON.stringify(rules));
|
||
return rules[index];
|
||
}
|
||
|
||
// 删除规则
|
||
delete(id: string): boolean {
|
||
const rules = this.getAll();
|
||
const filtered = rules.filter((r) => r.id !== id);
|
||
|
||
if (filtered.length === rules.length) return false;
|
||
|
||
localStorage.setItem(STORAGE_KEY, JSON.stringify(filtered));
|
||
return true;
|
||
}
|
||
|
||
// 记录使用
|
||
recordUse(id: string): void {
|
||
const rules = this.getAll();
|
||
const rule = rules.find((r) => r.id === id);
|
||
|
||
if (rule) {
|
||
rule.metadata.lastUsedAt = Date.now();
|
||
rule.metadata.useCount++;
|
||
localStorage.setItem(STORAGE_KEY, JSON.stringify(rules));
|
||
}
|
||
}
|
||
|
||
// 搜索规则
|
||
search(keyword: string): DataRule[] {
|
||
const rules = this.getAll();
|
||
const lowerKeyword = keyword.toLowerCase();
|
||
|
||
return rules.filter(
|
||
(r) =>
|
||
r.name.toLowerCase().includes(lowerKeyword) ||
|
||
r.description?.toLowerCase().includes(lowerKeyword),
|
||
);
|
||
}
|
||
|
||
// 获取最近使用
|
||
getRecent(limit: number = 10): DataRule[] {
|
||
const rules = this.getAll();
|
||
return rules
|
||
.filter((r) => r.metadata.lastUsedAt)
|
||
.sort((a, b) => b.metadata.lastUsedAt! - a.metadata.lastUsedAt!)
|
||
.slice(0, limit);
|
||
}
|
||
|
||
// 导出规则
|
||
export(ids: string[]): string {
|
||
const rules = this.getAll();
|
||
const selected = rules.filter((r) => ids.includes(r.id));
|
||
|
||
return JSON.stringify(
|
||
{
|
||
version: '1.0',
|
||
exportedAt: new Date().toISOString(),
|
||
rules: selected,
|
||
},
|
||
null,
|
||
2,
|
||
);
|
||
}
|
||
|
||
// 导入规则
|
||
import(jsonString: string): { success: number; failed: number; errors: string[] } {
|
||
try {
|
||
const data = JSON.parse(jsonString);
|
||
|
||
if (!data.rules || !Array.isArray(data.rules)) {
|
||
return { success: 0, failed: 1, errors: ['无效的规则格式'] };
|
||
}
|
||
|
||
let success = 0;
|
||
let failed = 0;
|
||
const errors: string[] = [];
|
||
|
||
for (const rule of data.rules) {
|
||
try {
|
||
if (!this.validateRule(rule)) {
|
||
throw new Error('规则格式不完整');
|
||
}
|
||
|
||
const newRule = {
|
||
...rule,
|
||
id: `rule_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`,
|
||
metadata: {
|
||
...rule.metadata,
|
||
createdAt: Date.now(),
|
||
updatedAt: Date.now(),
|
||
},
|
||
};
|
||
|
||
const rules = this.getAll();
|
||
rules.push(newRule);
|
||
localStorage.setItem(STORAGE_KEY, JSON.stringify(rules));
|
||
|
||
success++;
|
||
} catch (e: any) {
|
||
failed++;
|
||
errors.push(`导入失败: ${e.message}`);
|
||
}
|
||
}
|
||
|
||
return { success, failed, errors };
|
||
} catch (e) {
|
||
return { success: 0, failed: 1, errors: ['JSON 解析失败'] };
|
||
}
|
||
}
|
||
|
||
// 验证规则格式
|
||
private validateRule(rule: any): boolean {
|
||
return (
|
||
rule.name &&
|
||
Array.isArray(rule.fields) &&
|
||
rule.fields.every((f: any) => f.name && f.generator) &&
|
||
rule.options &&
|
||
typeof rule.options.total === 'number'
|
||
);
|
||
}
|
||
}
|
||
|
||
export const ruleStorage = new RuleStorage();
|
||
```
|
||
|
||
### 5. 数据导出
|
||
|
||
```typescript
|
||
// utils/exporter.ts
|
||
import type { DataRule } from '../types';
|
||
|
||
export class DataExporter {
|
||
// 导出为 JSON
|
||
static toJSON(data: any[], pretty: boolean = true): string {
|
||
return pretty ? JSON.stringify(data, null, 2) : JSON.stringify(data);
|
||
}
|
||
|
||
// 导出为 CSV
|
||
static toCSV(data: any[]): string {
|
||
if (data.length === 0) return '';
|
||
|
||
const headers = Object.keys(data[0]);
|
||
const rows = data.map((row) => headers.map((h) => this.escapeCSV(row[h])).join(','));
|
||
|
||
return [headers.join(','), ...rows].join('\n');
|
||
}
|
||
|
||
// CSV 转义
|
||
private static escapeCSV(value: any): string {
|
||
const str = String(value ?? '');
|
||
if (str.includes(',') || str.includes('"') || str.includes('\n')) {
|
||
return `"${str.replace(/"/g, '""')}"`;
|
||
}
|
||
return str;
|
||
}
|
||
|
||
// 导出为 SQL
|
||
static toSQL(data: any[], tableName: string = 'data'): string {
|
||
if (data.length === 0) return '';
|
||
|
||
const columns = Object.keys(data[0]);
|
||
const rows = data.map((row) => {
|
||
const values = columns.map((col) => {
|
||
const value = row[col];
|
||
if (typeof value === 'string') {
|
||
return `'${value.replace(/'/g, "\\'")}'`;
|
||
}
|
||
if (value === null || value === undefined) {
|
||
return 'NULL';
|
||
}
|
||
return String(value);
|
||
});
|
||
return `(${values.join(', ')})`;
|
||
});
|
||
|
||
return `INSERT INTO ${tableName} (${columns.join(', ')}) VALUES\n${rows.join(',\n')};`;
|
||
}
|
||
|
||
// 导出为 TypeScript 类型
|
||
static toTypeScript(data: any[], interfaceName: string = 'Data'): string {
|
||
if (data.length === 0) return '';
|
||
|
||
const sample = data[0];
|
||
const fields = Object.entries(sample).map(([key, value]) => {
|
||
let type = 'any';
|
||
if (typeof value === 'string') type = 'string';
|
||
else if (typeof value === 'number') type = 'number';
|
||
else if (typeof value === 'boolean') type = 'boolean';
|
||
else if (Array.isArray(value)) type = 'any[]';
|
||
|
||
return ` ${key}: ${type};`;
|
||
});
|
||
|
||
return `interface ${interfaceName} {\n${fields.join('\n')}\n}\n\n// 示例数据\nconst data: ${interfaceName}[] = ${JSON.stringify(data, null, 2)};`;
|
||
}
|
||
|
||
// 下载文件
|
||
static download(content: string, filename: string, mimeType: string = 'text/plain'): void {
|
||
const blob = new Blob([content], { type: mimeType });
|
||
const url = URL.createObjectURL(blob);
|
||
const a = document.createElement('a');
|
||
a.href = url;
|
||
a.download = filename;
|
||
document.body.appendChild(a);
|
||
a.click();
|
||
document.body.removeChild(a);
|
||
URL.revokeObjectURL(url);
|
||
}
|
||
}
|
||
```
|
||
|
||
---
|
||
|
||
## Web Worker 使用
|
||
|
||
### 创建 Worker
|
||
|
||
```typescript
|
||
// hooks/useGenerator.ts
|
||
import { useRef, useState, useCallback } from 'react';
|
||
import type { DataRule, GenerateResult } from '../types';
|
||
|
||
export function useGenerator() {
|
||
const workerRef = useRef<Worker | null>(null);
|
||
const [progress, setProgress] = useState(0);
|
||
const [isGenerating, setIsGenerating] = useState(false);
|
||
const [result, setResult] = useState<GenerateResult | null>(null);
|
||
|
||
const generate = useCallback(async (rule: DataRule): Promise<GenerateResult> => {
|
||
return new Promise((resolve, reject) => {
|
||
setIsGenerating(true);
|
||
setProgress(0);
|
||
|
||
// 创建 Worker
|
||
workerRef.current = new Worker(new URL('../worker/generator.worker.ts', import.meta.url), {
|
||
type: 'module',
|
||
});
|
||
|
||
// 监听消息
|
||
workerRef.current.onmessage = (e) => {
|
||
const { type, current, total, data, error } = e.data;
|
||
|
||
if (type === 'progress') {
|
||
setProgress(Math.round((current / total) * 100));
|
||
}
|
||
|
||
if (type === 'complete') {
|
||
setIsGenerating(false);
|
||
setProgress(100);
|
||
|
||
const result: GenerateResult = {
|
||
success: true,
|
||
data,
|
||
stats: {
|
||
total: rule.options.total,
|
||
generated: data.length,
|
||
failed: 0,
|
||
duration: 0,
|
||
},
|
||
};
|
||
|
||
setResult(result);
|
||
resolve(result);
|
||
}
|
||
|
||
if (type === 'error') {
|
||
setIsGenerating(false);
|
||
reject(new Error(error));
|
||
}
|
||
};
|
||
|
||
// 发送任务
|
||
workerRef.current.postMessage({
|
||
rule,
|
||
batchSize: 1000,
|
||
});
|
||
});
|
||
}, []);
|
||
|
||
const terminate = useCallback(() => {
|
||
if (workerRef.current) {
|
||
workerRef.current.terminate();
|
||
workerRef.current = null;
|
||
setIsGenerating(false);
|
||
}
|
||
}, []);
|
||
|
||
return {
|
||
generate,
|
||
terminate,
|
||
progress,
|
||
isGenerating,
|
||
result,
|
||
};
|
||
}
|
||
```
|
||
|
||
---
|
||
|
||
## 性能优化
|
||
|
||
### 1. Web Worker
|
||
|
||
- 将数据生成放到后台线程
|
||
- 不阻塞主线程 UI
|
||
- 支持取消和中断
|
||
|
||
### 2. 分批生成
|
||
|
||
- 每批生成 1000 条数据
|
||
- 实时发送进度
|
||
- 避免内存峰值
|
||
|
||
### 3. 唯一性处理
|
||
|
||
- 使用 Set 存储已生成的值
|
||
- 自动生成重试
|
||
- 避免无限循环
|
||
|
||
### 4. 虚拟列表
|
||
|
||
- 大数据预览使用虚拟列表
|
||
- 只渲染可见区域
|
||
- 减少 DOM 渲染
|
||
|
||
---
|
||
|
||
## 测试策略
|
||
|
||
### 单元测试
|
||
|
||
```typescript
|
||
// generators/__tests__/personal.test.ts
|
||
import { personalGenerators } from '../personal';
|
||
|
||
describe('chineseName', () => {
|
||
it('should generate valid chinese name', () => {
|
||
const name = personalGenerators.chineseName.generate({});
|
||
expect(name).toMatch(/^[一-龥]{2,3}$/);
|
||
});
|
||
|
||
it('should respect givenNameLength', () => {
|
||
const name = personalGenerators.chineseName.generate({
|
||
givenNameLength: { min: 1, max: 1 },
|
||
});
|
||
expect(name.length).toBe(2);
|
||
});
|
||
});
|
||
|
||
describe('email', () => {
|
||
it('should generate valid email', () => {
|
||
const email = personalGenerators.email.generate({});
|
||
expect(email).toMatch(/^[a-z0-9]+@[a-z0-9]+\.[a-z]+$/);
|
||
});
|
||
});
|
||
```
|
||
|
||
### 集成测试
|
||
|
||
```typescript
|
||
// __tests__/generator.integration.test.ts
|
||
import { useGenerator } from '../hooks/useGenerator';
|
||
import { renderHook, act } from '@testing-library/react';
|
||
|
||
describe('useGenerator', () => {
|
||
it('should generate data', async () => {
|
||
const { result } = renderHook(() => useGenerator());
|
||
|
||
const rule = {
|
||
fields: [{ id: '1', name: 'name', generator: 'chineseName', params: {}, unique: false }],
|
||
options: { total: 10, format: 'json' as const },
|
||
};
|
||
|
||
await act(async () => {
|
||
await result.current.generate(rule);
|
||
});
|
||
|
||
expect(result.current.result?.data).toHaveLength(10);
|
||
});
|
||
});
|
||
```
|