根据要求提供JSON或HTML服务? [英] Serve either JSON or HTML based on what was requested?

问题描述

我使用的是nodejs，我想创建一个统一的处理程序，以根据客户端请求的JSON或HTML格式提供服务.

I'm using nodejs and I want to make a unified handler to serve either JSON or HTML based on which one was requested from the client.

到目前为止，尽管我只是简单地在请求主体中传递了一个变量，然后我才可以在服务之前对其进行检查

So far I though of simply passing a variable in the request body that I can check before serving

app.use(function(req, res) {
    if (req.body.requested=='JSON')
        res.json(...
    else
        res.render(...

但不是在请求主体中传递变量，而是在标头中包含某些内容，或者在 jQuery.getJSON()和 jQuery.get()之间存在本质上的区别我用来区分吗?

But instead of passing the variable in request body, is there something in the headers or something intrinsically different between jQuery.getJSON() and jQuery.get() that I use to make the differentiation?

推荐答案

是的，更好的方法是简单地检查请求的 Accept 标头.例如，如果标题显示:

Yes, a better way is to simply check the Accept header of the request. For example, if the header says:

Accept: application/json

然后再发送回JSON是适当的.例如，

then it is appropriate to send JSON back. Or for example,

Accept: text/html

然后您发送回html.

then you send back html.

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