Node.js + express 如何在请求正文中添加字符串？

Question

I have a reverse proxy that works fine:

app.post('/geoserver', function (req, res) {
    apiProxy.web(req, res, {target: serverOne});
});

The request has already a body as following:

I need to add to the request body a string similar to this one:

'<Filter> .... </Filter>'

Before proxying to the serverOne .

Tried with req.body = req.body.replace('</Query>','<Filter>.... </Filter></Query>') but body seems to be undefined.

Any idea on how to solve this? Big thanks!

Answer 1

Look, anything can be changed into string by String conversion. but here in this case you can use JSON.stringify(JSON.parse(*)), * can be any format for which you want to change the format, here JSON.parse() will format your text and JSON.stringify() will help you to make valid JSON format.

Answer 2

First of all, the body might be undefined if the request is failing, or incorrectly parsed.

Try app.use(express.bodyParser()) . It's better to use it on the whole app.

Sometimes, when express is failing, you might want to use connect.

If you are using it, there might be some place for reverse engineering, and checking if the most simple request is reaching, since the screenshot you've provided is from the dev tools, right? That means it might be only sent, but not received/incorrectly interpreted.

Answer 3

As I found no solution , finally created a.Net handler that easily allows to modify the body content.

Accepting as solution for closing the question.