"查看 Express JS 响应标头？"

Question

If I need to see the incoming request headers I use: req.headers<\/code> .

Answer 1

In recent versions of express there is:

res.getHeaders()

 -> {x-powered-by: "Express"}

Properties starting with "_" are not part of the official api. In case of changes, they will not be documented, and chances are the code will break.

Answer 2

Thanks to @nem035 .

Response headers: res.header()._headers

Answer 3

Also:

 res.get('Content-Type'); // => "text/plain" 

https://expressjs.com/en/api.html#res.get

and, confusingly, lowercase is fine:

res.get('content-type');
// => "text/plain"

res.getHeaders()['content-type']
// => "text/plain"

Answer 4

You Can This Method ...

/* ----------------------- Get Response Header By Name ---------------------- */
/* res.getHeader('Put Header Name Here'); */
/* For Example */
res.getHeader('x-powered-by');