创建项目
创建Next.js项目
在项目存放目录下打开终端，运行：
npx create-next-app@14.2.24 nextjs-auth-14Note
由于Next.js 15之后的版本用npm会出现一些warnings，所以我们这里选择14.2.24版本。大家可以根据自己的项目情况选择合适的版本。
我的创建选项：
√ What is your project named? ... nextjs-auth-14
√ Would you like to use TypeScript? ... No / Yes
√ Would you like to use ESLint? ... No / Yes
√ Would you like to use Tailwind CSS? ... No / Yes
√ Would you like your code inside a `src/` directory? ... No / Yes
√ Would you like to use App Router? [recommended] ... No / Yes
√ Would you like to customize the import alias [@/* by default]? ... No / Yes然后切换到项目目录，并用vscode打开项目：
cd nextjs-auth-14
code .运行项目：
npm run dev效果如下：
