Express.js - 如何为所有响应设置标头 [英] Express.js - How to set a header to all responses

问题描述

我正在使用Express进行网络服务，我需要将响应编码为utf-8。

I am using Express for web services and I need the responses to be encoded in utf-8.

我知道我可以对每个响应执行以下操作：

I know I can do the following to each response:

response.setHeader('charset', 'utf-8');

是否有一种干净的方法为快递应用程序发送的所有响应设置标题或字符集？

Is there a clean way to set a header or a charset for all responses sent by the express application?

推荐答案

只需使用针对所有路线执行的中间件语句：

Just use a middleware statement that executes for all routes:

// a middleware with no mount path; gets executed for every request to the app
app.use(function(req, res, next) {
  res.setHeader('charset', 'utf-8')
  next();
});

并且，确保在您希望将其应用于的任何路线之前注册：

And, make sure this is registered before any routes that you want it to apply to:

app.use(...);
app.get('/index.html', ...);

Express中间件这里的文档。

Express middleware documentation here.

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