如何在Node.js中全局设置内容类型（快速） [英] How to set content type globally in node.js (express)

问题描述

我可能是错的，但是在任何文档中都找不到。
我试图为任何响应全局设置内容类型，并且这样做：

I might be wrong but I wasn't able to find this in any documentation. I am trying to set content type globally for any response and did it like:

    // Set content type GLOBALLY for any response.
  app.use(function (req, res, next) {
    res.contentType('application/json');
    next();
  });

在定义我的路线之前。

 // Users REST methods.
  app.post('/api/v1/login', auth.willAuthenticateLocal, users.login);
  app.get('/api/v1/logout', auth.isAuthenticated, users.logout);
  app.get('/api/v1/users/:username', auth.isAuthenticated, users.get);

出于某种原因，这不起作用。你知道我做错了吗？分别在每个方法中设置它都可以，但是我希望在全局范围内使用它。

For some reason this doesn't work. Do you know what I am doing wrong? Setting it in each method separately, works but I want it globally...

推荐答案

尝试此（适用于Express 4.0）：

Try this for Express 4.0 :

// this middleware will be executed for every request to the app
app.use(function (req, res, next) {
  res.header("Content-Type",'application/json');
  next();
});

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