129 lines
3.4 KiB
Python
129 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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"""
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JavaScript Express.js 后端项目初始化模块
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"""
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import subprocess
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import sys
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def run_command_with_progress(cmd, cwd, description):
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"""运行命令并显示实时输出"""
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try:
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print(f"\n{'=' * 60}")
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print(f"执行: {description}")
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print(f"{'=' * 60}")
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process = subprocess.Popen(
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cmd,
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cwd=cwd,
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shell=True,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT,
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bufsize=0
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)
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for line in process.stdout:
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try:
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decoded_line = line.decode('utf-8', errors='replace')
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except:
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try:
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decoded_line = line.decode('gbk', errors='replace')
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except:
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decoded_line = line.decode('latin-1', errors='replace')
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print(decoded_line, end='')
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process.wait()
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if process.returncode == 0:
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print(f"\n{'=' * 60}")
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print(f"✅ {description} - 完成")
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print(f"{'=' * 60}\n")
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return True
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else:
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print(f"\n{'=' * 60}")
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print(f"❌ {description} - 失败 (错误码: {process.returncode})")
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print(f"{'=' * 60}\n")
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return False
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except Exception as e:
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print(f"\n❌ 执行失败: {str(e)}")
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return False
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def init_express_project(backend_dir, project_name):
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"""初始化 Express.js 项目"""
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print("\n🚀 初始化 Express.js 项目...")
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# 初始化 npm 项目
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success = run_command_with_progress(
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"npm init -y",
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backend_dir,
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"初始化 npm 项目"
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)
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if not success:
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print("\n💡 提示: 请确保已安装 Node.js 和 npm")
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print(" 下载地址: https://nodejs.org/")
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sys.exit(1)
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# 安装依赖
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run_command_with_progress(
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"npm install express cors",
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backend_dir,
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"安装 Express.js 依赖"
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)
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# 安装开发依赖
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run_command_with_progress(
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"npm install -D nodemon",
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backend_dir,
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"安装开发依赖 (nodemon)"
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)
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# 创建 app.js
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app_js = backend_dir / "app.js"
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app_js.write_text(f'''const express = require('express');
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const cors = require('cors');
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const app = express();
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const PORT = 8080;
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// 中间件
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app.use(cors());
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app.use(express.json());
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// 健康检查接口
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app.get('/api/health', (req, res) => {{
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res.json({{
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status: 'ok',
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message: 'Welcome to {project_name} API'
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}});
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}});
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// 示例接口
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app.get('/api/hello', (req, res) => {{
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res.json({{ message: 'Hello from Express.js!' }});
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}});
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// 启动服务器
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app.listen(PORT, () => {{
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console.log('🚀 服务器启动: http://localhost:' + PORT);
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console.log('📍 健康检查: http://localhost:' + PORT + '/api/health');
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}});
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''', encoding='utf-8')
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# 更新 package.json 添加脚本
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package_json = backend_dir / "package.json"
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import json
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pkg = json.loads(package_json.read_text(encoding='utf-8'))
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pkg['scripts'] = {
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'start': 'node app.js',
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'dev': 'nodemon app.js'
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}
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pkg['name'] = f'{project_name}-backend'
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package_json.write_text(json.dumps(pkg, indent=2, ensure_ascii=False), encoding='utf-8')
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print("\n✅ Express.js 项目初始化成功")
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print("💡 启动命令: npm run dev (开发模式) 或 npm start (生产模式)")
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