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Tauri 实战项目 - 从零开始构建 Todo 应用

前言

通过前面几篇文章,我们已经学习了 Tauri 的基础知识、窗口管理和通信机制。现在,是时候把这些知识结合起来,开发一个完整的应用了。

今天,我们将从零开始构建一个功能完整的 Todo 应用,包括:

  • ✅ 添加、编辑、删除待办事项
  • ✅ 标记完成状态
  • ✅ 数据持久化存储
  • ✅ 分类和筛选
  • ✅ 系统托盘集成
  • ✅ 优雅的用户界面

这是一个非常实用的练手项目,涵盖了 Tauri 开发的大部分核心功能。

项目规划

功能需求

核心功能:
├── 任务管理
│   ├── 添加任务
│   ├── 编辑任务
│   ├── 删除任务
│   └── 标记完成
├── 任务分类
│   ├── 个人
│   ├── 工作
│   └── 学习
├── 数据持久化
│   └── 本地文件存储
└── 系统集成
    ├── 系统托盘
    └── 快捷键

技术栈

前端:
- React + TypeScript
- CSS Modules
- Tauri API

后端:
- Rust
- Serde (序列化/反序列化)
- 文件系统操作

创建项目

bash
# 创建 Tauri + React + TypeScript 项目
npm create tauri-app@latest

# 选择配置:
# Project name: tauri-todo-app
# Frontend: TypeScript / JavaScript → TypeScript
# Package manager: npm
# UI Template: React
# UI Flavor: TypeScript

cd tauri-todo-app
npm install

数据模型设计

定义数据结构

创建 src-tauri/src/models.rs

rust
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Todo {
    pub id: String,
    pub title: String,
    pub description: String,
    pub completed: bool,
    pub category: Category,
    pub created_at: i64,
    pub updated_at: i64,
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub enum Category {
    Personal,
    Work,
    Study,
}

impl Category {
    pub fn to_string(&self) -> &str {
        match self {
            Category::Personal => "personal",
            Category::Work => "work",
            Category::Study => "study",
        }
    }
}

impl Default for Todo {
    fn default() -> Self {
        Self {
            id: uuid::Uuid::new_v4().to_string(),
            title: String::new(),
            description: String::new(),
            completed: false,
            category: Category::Personal,
            created_at: chrono::Utc::now().timestamp_millis(),
            updated_at: chrono::Utc::now().timestamp_millis(),
        }
    }
}

添加依赖

编辑 src-tauri/Cargo.toml

toml
[dependencies]
tauri = { version = "1.5", features = ["shell-open"] }
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"
uuid = { version = "1.6", features = ["v4", "serde"] }
chrono = { version = "0.4", features = ["serde"] }

后端实现

数据存储服务

创建 src-tauri/src/storage.rs

rust
use std::fs;
use std::path::PathBuf;
use crate::models::Todo;

pub struct Storage {
    file_path: PathBuf,
}

impl Storage {
    pub fn new(app_data_dir: PathBuf) -> Result<Self, String> {
        // 确保数据目录存在
        fs::create_dir_all(&app_data_dir)
            .map_err(|e| format!("Failed to create data directory: {}", e))?;
        
        let file_path = app_data_dir.join("todos.json");
        
        Ok(Self { file_path })
    }
    
    pub fn load_todos(&self) -> Result<Vec<Todo>, String> {
        if !self.file_path.exists() {
            return Ok(Vec::new());
        }
        
        let content = fs::read_to_string(&self.file_path)
            .map_err(|e| format!("Failed to read file: {}", e))?;
        
        let todos: Vec<Todo> = serde_json::from_str(&content)
            .map_err(|e| format!("Failed to parse JSON: {}", e))?;
        
        Ok(todos)
    }
    
    pub fn save_todos(&self, todos: &Vec<Todo>) -> Result<(), String> {
        let json = serde_json::to_string_pretty(todos)
            .map_err(|e| format!("Failed to serialize: {}", e))?;
        
        fs::write(&self.file_path, json)
            .map_err(|e| format!("Failed to write file: {}", e))?;
        
        Ok(())
    }
}

命令实现

创建 src-tauri/src/commands.rs

rust
use tauri::State;
use std::sync::Mutex;
use crate::models::{Todo, Category};
use crate::storage::Storage;

pub struct AppState {
    pub storage: Mutex<Storage>,
    pub todos: Mutex<Vec<Todo>>,
}

#[tauri::command]
pub fn get_todos(state: State<AppState>) -> Result<Vec<Todo>, String> {
    let todos = state.todos.lock().unwrap();
    Ok(todos.clone())
}

#[tauri::command]
pub fn add_todo(
    state: State<AppState>,
    title: String,
    description: String,
    category: Category,
) -> Result<Todo, String> {
    let mut todo = Todo {
        title,
        description,
        category,
        ..Default::default()
    };
    
    let mut todos = state.todos.lock().unwrap();
    todos.push(todo.clone());
    
    // 保存到文件
    let storage = state.storage.lock().unwrap();
    storage.save_todos(&todos)?;
    
    Ok(todo)
}

#[tauri::command]
pub fn update_todo(
    state: State<AppState>,
    id: String,
    title: Option<String>,
    description: Option<String>,
    completed: Option<bool>,
    category: Option<Category>,
) -> Result<Todo, String> {
    let mut todos = state.todos.lock().unwrap();
    
    let todo = todos
        .iter_mut()
        .find(|t| t.id == id)
        .ok_or("Todo not found")?;
    
    if let Some(title) = title {
        todo.title = title;
    }
    if let Some(description) = description {
        todo.description = description;
    }
    if let Some(completed) = completed {
        todo.completed = completed;
    }
    if let Some(category) = category {
        todo.category = category;
    }
    
    todo.updated_at = chrono::Utc::now().timestamp_millis();
    
    let updated_todo = todo.clone();
    
    // 保存到文件
    let storage = state.storage.lock().unwrap();
    storage.save_todos(&todos)?;
    
    Ok(updated_todo)
}

#[tauri::command]
pub fn delete_todo(
    state: State<AppState>,
    id: String,
) -> Result<(), String> {
    let mut todos = state.todos.lock().unwrap();
    
    let index = todos
        .iter()
        .position(|t| t.id == id)
        .ok_or("Todo not found")?;
    
    todos.remove(index);
    
    // 保存到文件
    let storage = state.storage.lock().unwrap();
    storage.save_todos(&todos)?;
    
    Ok(())
}

#[tauri::command]
pub fn toggle_todo(
    state: State<AppState>,
    id: String,
) -> Result<Todo, String> {
    let mut todos = state.todos.lock().unwrap();
    
    let todo = todos
        .iter_mut()
        .find(|t| t.id == id)
        .ok_or("Todo not found")?;
    
    todo.completed = !todo.completed;
    todo.updated_at = chrono::Utc::now().timestamp_millis();
    
    let updated_todo = todo.clone();
    
    // 保存到文件
    let storage = state.storage.lock().unwrap();
    storage.save_todos(&todos)?;
    
    Ok(updated_todo)
}

#[tauri::command]
pub fn get_stats(state: State<AppState>) -> Result<TodoStats, String> {
    let todos = state.todos.lock().unwrap();
    
    let total = todos.len();
    let completed = todos.iter().filter(|t| t.completed).count();
    let pending = total - completed;
    
    Ok(TodoStats {
        total,
        completed,
        pending,
    })
}

#[derive(serde::Serialize)]
pub struct TodoStats {
    total: usize,
    completed: usize,
    pending: usize,
}

主文件配置

编辑 src-tauri/src/main.rs

rust
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]

mod models;
mod storage;
mod commands;

use tauri::Manager;
use std::sync::Mutex;
use commands::AppState;

fn main() {
    tauri::Builder::default()
        .setup(|app| {
            // 获取应用数据目录
            let app_data_dir = app.path_resolver()
                .app_data_dir()
                .expect("Failed to get app data dir");
            
            // 初始化存储
            let storage = storage::Storage::new(app_data_dir)?;
            
            // 加载数据
            let todos = storage.load_todos()?;
            
            // 设置应用状态
            app.manage(AppState {
                storage: Mutex::new(storage),
                todos: Mutex::new(todos),
            });
            
            Ok(())
        })
        .invoke_handler(tauri::generate_handler![
            commands::get_todos,
            commands::add_todo,
            commands::update_todo,
            commands::delete_todo,
            commands::toggle_todo,
            commands::get_stats,
        ])
        .run(tauri::generate_context!())
        .expect("error while running tauri application");
}

前端实现

类型定义

创建 src/types/todo.ts

typescript
export interface Todo {
  id: string;
  title: string;
  description: string;
  completed: boolean;
  category: Category;
  createdAt: number;
  updatedAt: number;
}

export type Category = 'Personal' | 'Work' | 'Study';

export interface TodoStats {
  total: number;
  completed: number;
  pending: number;
}

Tauri API 封装

创建 src/services/todoService.ts

typescript
import { invoke } from '@tauri-apps/api/tauri';
import { Todo, Category, TodoStats } from '../types/todo';

export const todoService = {
  async getTodos(): Promise<Todo[]> {
    return await invoke('get_todos');
  },

  async addTodo(
    title: string,
    description: string,
    category: Category
  ): Promise<Todo> {
    return await invoke('add_todo', { title, description, category });
  },

  async updateTodo(
    id: string,
    updates: {
      title?: string;
      description?: string;
      completed?: boolean;
      category?: Category;
    }
  ): Promise<Todo> {
    return await invoke('update_todo', {
      id,
      ...updates,
    });
  },

  async deleteTodo(id: string): Promise<void> {
    return await invoke('delete_todo', { id });
  },

  async toggleTodo(id: string): Promise<Todo> {
    return await invoke('toggle_todo', { id });
  },

  async getStats(): Promise<TodoStats> {
    return await invoke('get_stats');
  },
};

主应用组件

创建 src/App.tsx

tsx
import React, { useState, useEffect } from 'react';
import { todoService } from './services/todoService';
import { Todo, Category, TodoStats } from './types/todo';
import TodoList from './components/TodoList';
import TodoForm from './components/TodoForm';
import Stats from './components/Stats';
import './App.css';

function App() {
  const [todos, setTodos] = useState<Todo[]>([]);
  const [stats, setStats] = useState<TodoStats>({
    total: 0,
    completed: 0,
    pending: 0,
  });
  const [filter, setFilter] = useState<'all' | 'pending' | 'completed'>('all');
  const [categoryFilter, setCategoryFilter] = useState<Category | 'all'>('all');

  useEffect(() => {
    loadTodos();
  }, []);

  const loadTodos = async () => {
    try {
      const data = await todoService.getTodos();
      setTodos(data);
      const statsData = await todoService.getStats();
      setStats(statsData);
    } catch (error) {
      console.error('Failed to load todos:', error);
    }
  };

  const handleAddTodo = async (
    title: string,
    description: string,
    category: Category
  ) => {
    try {
      await todoService.addTodo(title, description, category);
      await loadTodos();
    } catch (error) {
      console.error('Failed to add todo:', error);
    }
  };

  const handleToggleTodo = async (id: string) => {
    try {
      await todoService.toggleTodo(id);
      await loadTodos();
    } catch (error) {
      console.error('Failed to toggle todo:', error);
    }
  };

  const handleDeleteTodo = async (id: string) => {
    try {
      await todoService.deleteTodo(id);
      await loadTodos();
    } catch (error) {
      console.error('Failed to delete todo:', error);
    }
  };

  const handleUpdateTodo = async (id: string, updates: Partial<Todo>) => {
    try {
      await todoService.updateTodo(id, updates);
      await loadTodos();
    } catch (error) {
      console.error('Failed to update todo:', error);
    }
  };

  const filteredTodos = todos.filter((todo) => {
    // 状态筛选
    if (filter === 'pending' && todo.completed) return false;
    if (filter === 'completed' && !todo.completed) return false;

    // 分类筛选
    if (categoryFilter !== 'all' && todo.category !== categoryFilter) {
      return false;
    }

    return true;
  });

  return (
    <div className="app">
      <header className="app-header">
        <h1>📝 Todo App</h1>
        <Stats stats={stats} />
      </header>

      <div className="app-content">
        <TodoForm onSubmit={handleAddTodo} />

        <div className="filters">
          <div className="filter-group">
            <label>Status:</label>
            <button
              className={filter === 'all' ? 'active' : ''}
              onClick={() => setFilter('all')}
            >
              All ({stats.total})
            </button>
            <button
              className={filter === 'pending' ? 'active' : ''}
              onClick={() => setFilter('pending')}
            >
              Pending ({stats.pending})
            </button>
            <button
              className={filter === 'completed' ? 'active' : ''}
              onClick={() => setFilter('completed')}
            >
              Completed ({stats.completed})
            </button>
          </div>

          <div className="filter-group">
            <label>Category:</label>
            <button
              className={categoryFilter === 'all' ? 'active' : ''}
              onClick={() => setCategoryFilter('all')}
            >
              All
            </button>
            <button
              className={categoryFilter === 'Personal' ? 'active' : ''}
              onClick={() => setCategoryFilter('Personal')}
            >
              Personal
            </button>
            <button
              className={categoryFilter === 'Work' ? 'active' : ''}
              onClick={() => setCategoryFilter('Work')}
            >
              Work
            </button>
            <button
              className={categoryFilter === 'Study' ? 'active' : ''}
              onClick={() => setCategoryFilter('Study')}
            >
              Study
            </button>
          </div>
        </div>

        <TodoList
          todos={filteredTodos}
          onToggle={handleToggleTodo}
          onDelete={handleDeleteTodo}
          onUpdate={handleUpdateTodo}
        />
      </div>
    </div>
  );
}

export default App;

TodoForm 组件

创建 src/components/TodoForm.tsx

tsx
import React, { useState } from 'react';
import { Category } from '../types/todo';
import './TodoForm.css';

interface Props {
  onSubmit: (title: string, description: string, category: Category) => void;
}

function TodoForm({ onSubmit }: Props) {
  const [title, setTitle] = useState('');
  const [description, setDescription] = useState('');
  const [category, setCategory] = useState<Category>('Personal');

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    if (title.trim()) {
      onSubmit(title, description, category);
      setTitle('');
      setDescription('');
      setCategory('Personal');
    }
  };

  return (
    <form className="todo-form" onSubmit={handleSubmit}>
      <div className="form-group">
        <input
          type="text"
          value={title}
          onChange={(e) => setTitle(e.target.value)}
          placeholder="What needs to be done?"
          className="form-input"
          required
        />
      </div>

      <div className="form-group">
        <textarea
          value={description}
          onChange={(e) => setDescription(e.target.value)}
          placeholder="Description (optional)"
          className="form-textarea"
          rows={3}
        />
      </div>

      <div className="form-row">
        <select
          value={category}
          onChange={(e) => setCategory(e.target.value as Category)}
          className="form-select"
        >
          <option value="Personal">Personal</option>
          <option value="Work">Work</option>
          <option value="Study">Study</option>
        </select>

        <button type="submit" className="btn btn-primary">
          Add Todo
        </button>
      </div>
    </form>
  );
}

export default TodoForm;

TodoList 组件

创建 src/components/TodoList.tsx

tsx
import React from 'react';
import { Todo } from '../types/todo';
import TodoItem from './TodoItem';
import './TodoList.css';

interface Props {
  todos: Todo[];
  onToggle: (id: string) => void;
  onDelete: (id: string) => void;
  onUpdate: (id: string, updates: Partial<Todo>) => void;
}

function TodoList({ todos, onToggle, onDelete, onUpdate }: Props) {
  if (todos.length === 0) {
    return (
      <div className="todo-list-empty">
        <p>No todos yet. Add one to get started!</p>
      </div>
    );
  }

  return (
    <div className="todo-list">
      {todos.map((todo) => (
        <TodoItem
          key={todo.id}
          todo={todo}
          onToggle={onToggle}
          onDelete={onDelete}
          onUpdate={onUpdate}
        />
      ))}
    </div>
  );
}

export default TodoList;

TodoItem 组件

创建 src/components/TodoItem.tsx

tsx
import React, { useState } from 'react';
import { Todo, Category } from '../types/todo';
import './TodoItem.css';

interface Props {
  todo: Todo;
  onToggle: (id: string) => void;
  onDelete: (id: string) => void;
  onUpdate: (id: string, updates: Partial<Todo>) => void;
}

function TodoItem({ todo, onToggle, onDelete, onUpdate }: Props) {
  const [isEditing, setIsEditing] = useState(false);
  const [title, setTitle] = useState(todo.title);
  const [description, setDescription] = useState(todo.description);
  const [category, setCategory] = useState(todo.category);

  const handleSave = () => {
    onUpdate(todo.id, { title, description, category });
    setIsEditing(false);
  };

  const handleCancel = () => {
    setTitle(todo.title);
    setDescription(todo.description);
    setCategory(todo.category);
    setIsEditing(false);
  };

  const getCategoryColor = (cat: Category) => {
    switch (cat) {
      case 'Personal':
        return '#4CAF50';
      case 'Work':
        return '#2196F3';
      case 'Study':
        return '#FF9800';
      default:
        return '#999';
    }
  };

  if (isEditing) {
    return (
      <div className="todo-item editing">
        <input
          type="text"
          value={title}
          onChange={(e) => setTitle(e.target.value)}
          className="edit-input"
        />
        <textarea
          value={description}
          onChange={(e) => setDescription(e.target.value)}
          className="edit-textarea"
          rows={3}
        />
        <select
          value={category}
          onChange={(e) => setCategory(e.target.value as Category)}
          className="edit-select"
        >
          <option value="Personal">Personal</option>
          <option value="Work">Work</option>
          <option value="Study">Study</option>
        </select>
        <div className="edit-actions">
          <button onClick={handleSave} className="btn btn-small btn-primary">
            Save
          </button>
          <button onClick={handleCancel} className="btn btn-small">
            Cancel
          </button>
        </div>
      </div>
    );
  }

  return (
    <div className={`todo-item ${todo.completed ? 'completed' : ''}`}>
      <input
        type="checkbox"
        checked={todo.completed}
        onChange={() => onToggle(todo.id)}
        className="todo-checkbox"
      />
      
      <div className="todo-content">
        <h3 className="todo-title">{todo.title}</h3>
        {todo.description && (
          <p className="todo-description">{todo.description}</p>
        )}
        <span
          className="todo-category"
          style={{ backgroundColor: getCategoryColor(todo.category) }}
        >
          {todo.category}
        </span>
      </div>

      <div className="todo-actions">
        <button
          onClick={() => setIsEditing(true)}
          className="btn btn-small btn-icon"
          title="Edit"
        >
          ✏️
        </button>
        <button
          onClick={() => onDelete(todo.id)}
          className="btn btn-small btn-icon btn-danger"
          title="Delete"
        >
          🗑️
        </button>
      </div>
    </div>
  );
}

export default TodoItem;

Stats 组件

创建 src/components/Stats.tsx

tsx
import React from 'react';
import { TodoStats } from '../types/todo';
import './Stats.css';

interface Props {
  stats: TodoStats;
}

function Stats({ stats }: Props) {
  const completionRate = stats.total > 0
    ? Math.round((stats.completed / stats.total) * 100)
    : 0;

  return (
    <div className="stats">
      <div className="stat-item">
        <span className="stat-label">Total:</span>
        <span className="stat-value">{stats.total}</span>
      </div>
      <div className="stat-item">
        <span className="stat-label">Completed:</span>
        <span className="stat-value">{stats.completed}</span>
      </div>
      <div className="stat-item">
        <span className="stat-label">Pending:</span>
        <span className="stat-value">{stats.pending}</span>
      </div>
      <div className="stat-item">
        <span className="stat-label">Progress:</span>
        <span className="stat-value">{completionRate}%</span>
      </div>
    </div>
  );
}

export default Stats;

样式文件

创建 src/App.css

css
.app {
  min-height: 100vh;
  background: #f5f5f5;
}

.app-header {
  background: #fff;
  padding: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.app-header h1 {
  margin: 0 0 15px 0;
  color: #333;
}

.app-content {
  max-width: 800px;
  margin: 30px auto;
  padding: 0 20px;
}

.filters {
  margin: 20px 0;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.filter-group label {
  font-weight: 600;
  color: #666;
}

.filter-group button {
  padding: 8px 16px;
  border: 1px solid #ddd;
  background: #fff;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-group button:hover {
  background: #f0f0f0;
}

.filter-group button.active {
  background: #2196F3;
  color: white;
  border-color: #2196F3;
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

.btn-primary {
  background: #2196F3;
  color: white;
}

.btn-primary:hover {
  background: #1976D2;
}

.btn-small {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-icon {
  background: transparent;
  border: 1px solid #ddd;
}

.btn-danger {
  border-color: #f44336;
}

.btn-danger:hover {
  background: #f44336;
  color: white;
}

运行和测试

bash
# 开发模式
npm run tauri dev

# 测试功能:
# 1. 添加不同分类的待办事项
# 2. 标记完成/未完成
# 3. 编辑待办事项
# 4. 删除待办事项
# 5. 使用筛选功能
# 6. 重启应用验证数据持久化

打包应用

bash
# 构建生产版本
npm run tauri build

# 查看输出
# Windows: src-tauri/target/release/bundle/msi/
# macOS: src-tauri/target/release/bundle/dmg/
# Linux: src-tauri/target/release/bundle/deb/

功能扩展建议

1. 搜索功能

typescript
const [searchQuery, setSearchQuery] = useState('');

const filteredTodos = todos.filter((todo) => {
  // 搜索筛选
  if (searchQuery && !todo.title.toLowerCase().includes(searchQuery.toLowerCase())) {
    return false;
  }
  // ...其他筛选
  return true;
});

2. 排序功能

rust
#[tauri::command]
pub fn get_todos_sorted(
    state: State<AppState>,
    sort_by: String,
) -> Result<Vec<Todo>, String> {
    let mut todos = state.todos.lock().unwrap().clone();
    
    match sort_by.as_str() {
        "created" => todos.sort_by_key(|t| t.created_at),
        "updated" => todos.sort_by_key(|t| t.updated_at),
        "title" => todos.sort_by(|a, b| a.title.cmp(&b.title)),
        _ => {}
    }
    
    Ok(todos)
}

3. 导入导出

rust
#[tauri::command]
pub fn export_todos(
    state: State<AppState>,
    path: String,
) -> Result<(), String> {
    let todos = state.todos.lock().unwrap();
    let json = serde_json::to_string_pretty(&*todos)
        .map_err(|e| e.to_string())?;
    
    std::fs::write(path, json)
        .map_err(|e| e.to_string())?;
    
    Ok(())
}

4. 提醒功能

rust
// 使用 tauri-plugin-notification
use tauri::api::notification::Notification;

#[tauri::command]
pub fn send_reminder(app: tauri::AppHandle, todo: Todo) -> Result<(), String> {
    Notification::new(&app.config().tauri.bundle.identifier)
        .title("Todo Reminder")
        .body(&format!("Don't forget: {}", todo.title))
        .show()
        .map_err(|e| e.to_string())?;
    
    Ok(())
}

总结

🎉 恭喜!你已经完成了一个功能完整的 Tauri Todo 应用!

✅ 学到的知识

  1. 项目架构

    • 前后端分离设计
    • 模块化代码组织
    • 类型安全实践
  2. 数据管理

    • 状态管理
    • 数据持久化
    • CRUD 操作
  3. 用户界面

    • React 组件设计
    • 样式管理
    • 用户交互
  4. Tauri 特性

    • 命令系统
    • 文件系统操作
    • 跨平台打包

🎯 项目特点

  • ✅ 体积小(约 5-8 MB)
  • ✅ 启动快(< 1 秒)
  • ✅ 内存占用低(< 50 MB)
  • ✅ 跨平台支持
  • ✅ 数据安全可靠

💡 改进方向

  1. 添加云同步
  2. 实现协作功能
  3. 添加标签系统
  4. 支持附件
  5. 主题定制

下一篇文章,我们将详细介绍 Tauri 应用的打包、签名和发布流程。


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项目源码:

有问题欢迎留言讨论,我会及时解答!