基本schema测试

node_modules/fastify/docs/Reference/Middleware.md

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+<h1 align="center">Fastify</h1>
+
+## Middleware
+
+Starting with Fastify v3.0.0, middleware is not supported out of the box and
+requires an external plugin such as
+[`@fastify/express`](https://github.com/fastify/fastify-express) or
+[`@fastify/middie`](https://github.com/fastify/middie).
+
+
+An example of registering the
+[`@fastify/express`](https://github.com/fastify/fastify-express) plugin to `use`
+Express middleware:
+
+```js
+await fastify.register(require('@fastify/express'))
+fastify.use(require('cors')())
+fastify.use(require('dns-prefetch-control')())
+fastify.use(require('frameguard')())
+fastify.use(require('hsts')())
+fastify.use(require('ienoopen')())
+fastify.use(require('x-xss-protection')())
+```
+
+[`@fastify/middie`](https://github.com/fastify/middie) can also be used,
+which provides support for simple Express-style middleware with improved
+performance:
+
+```js
+await fastify.register(require('@fastify/middie'))
+fastify.use(require('cors')())
+```
+
+Middleware can be encapsulated, allowing control over where it runs using
+`register` as explained in the [plugins guide](../Guides/Plugins-Guide.md).
+
+Fastify middleware does not expose the `send` method or other methods specific
+to the Fastify [Reply](./Reply.md#reply) instance. This is because Fastify wraps
+the incoming `req` and `res` Node instances using the
+[Request](./Request.md#request) and [Reply](./Reply.md#reply) objects
+internally, but this is done after the middleware phase. To create middleware,
+use the Node `req` and `res` instances. Alternatively, use the `preHandler` hook
+that already has the Fastify [Request](./Request.md#request) and
+[Reply](./Reply.md#reply) instances. For more information, see
+[Hooks](./Hooks.md#hooks).
+
+#### Restrict middleware execution to certain paths
+<a id="restrict-usage"></a>
+
+To run middleware under certain paths, pass the path as the first parameter to
+`use`.
+
+> ℹ️ Note: This does not support routes with parameters
+> (e.g. `/user/:id/comments`) and wildcards are not supported in multiple paths.
+
+```js
+const path = require('node:path')
+const serveStatic = require('serve-static')
+
+// Single path
+fastify.use('/css', serveStatic(path.join(__dirname, '/assets')))
+
+// Wildcard path
+fastify.use('/css/(.*)', serveStatic(path.join(__dirname, '/assets')))
+
+// Multiple paths
+fastify.use(['/css', '/js'], serveStatic(path.join(__dirname, '/assets')))
+```
+
+### Alternatives
+
+Fastify offers alternatives to commonly used middleware, such as
+[`@fastify/helmet`](https://github.com/fastify/fastify-helmet) for
+[`helmet`](https://github.com/helmetjs/helmet),
+[`@fastify/cors`](https://github.com/fastify/fastify-cors) for
+[`cors`](https://github.com/expressjs/cors), and
+[`@fastify/static`](https://github.com/fastify/fastify-static) for
+[`serve-static`](https://github.com/expressjs/serve-static).