How to get the raw POST data in Spring Boot controller

Question

I have a plain controller class extends AbstractController that I'm plugging into Spring's handler mapping mechanism, by creating a new SimpleUrlHandlerMapping bean.

In my class I need to read the raw POST data, even when the Content-Type is application/x-www-form-urlencoded. This is somewhat tricky in the Servlet specification, because in order to do that, you need to call request.getInputStream() or request.getReader() before you access any of the request.getParameter*() methods. Otherwise, the latter will consume the input stream and it will not be available anymore.

In my class I'm not calling any of the getParameter*() methods, but I'm still seeing an empty request body when the Content-Type is application/x-www-form-urlencoded. Which means that Spring is calling one of the getParameter*() methods before it handles control over to my class.

Which class is doing that and how can I prevent it?

(Note to overzealous editors: this question is specific to Spring Boot. It is not a duplicate of other "raw POST data" questions.)

score 1 · Accepted Answer · answered Mar 25 '19 at 12:15

1

Found it.

I just needed to disable the HiddenHttpMethodFilter, which I'm not using anyways:

spring.mvc.hiddenmethod.filter.enabled=false

answered Mar 25 '19 at 12:15

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You might want to add the fact that you are using Spring Boot to your question, as it is quite relevant. – M. Deinum Mar 25 '19 at 12:23
I faced a similar problem which is caused spring-mvc 5's build in request logging, see https://stackoverflow.com/a/59264125/3656774 – Martin van Wingerden Dec 10 '19 at 09:35

How to get the raw POST data in Spring Boot controller

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