25 lines
866 B
Markdown
25 lines
866 B
Markdown
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---
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title: Implement a Root-Level Request Logger Middleware
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localeTitle: 实现根级请求记录器中间件
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---
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## 实现根级请求记录器中间件
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在顶部编写这个挑战更容易（已经存在一个存根）。这是因为中间件必须放置您希望它用于的函数调用。
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要设置自己的中间件，您可以这样做：
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```javascript
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app.use(function middleware(req, res, next) {
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// Do something
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// Call the next function in line:
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next();
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});
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```
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如果您无法正确格式化字符串，一种方法是：
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```javascript
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var string = req.method + ' ' + req.path + ' - ' + req.ip;
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```
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[帮助我们的社区扩展这些提示和指南](https://github.com/freecodecamp/guides/tree/master/src/pages/certifications/apis-and-microservices/basic-node-and-express/implement-a-root-level-request-logger-middleware/index.md) 。
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