I know How to get the @RequestBody in an @ExceptionHandler (Spring REST) exists but I am looking for a slightly different solution. When my service gets a 403 it does not make it to my @Controller class. Thus, how can I still grab something out of the incoming request body, since this scenario would never actually hit my code? It only ever hits the generated CGLIB code.
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for 403 in particular, i would recommend this: https://www.baeldung.com/exception-handling-for-rest-with-spring#denied – xerx593 Apr 07 '20 at 20:11
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Which part of that article do recommend for this issue? – Brian Apr 07 '20 at 20:13
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the linked: #denied - Chapter 6 :) ...6.2! – xerx593 Apr 07 '20 at 20:15
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I had read that part, and that is basically what I am doing. The issue is, how do I get the @RrequestBody from that? Any object input to this service has a parent class in which a unique ID is required input by the client. I need to grab that ID from the input request, so I can log it before I return the error. So when my consumer complains of an issue for that specific ID, I can tell them they got a 403. – Brian Apr 07 '20 at 20:18
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Once you have a `HttpServletRequest` (injected into your error handler), you can try to ["Get the POST request body from HttpServletRequest"](https://stackoverflow.com/q/8100634/592355). – xerx593 Apr 07 '20 at 20:38
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I tired that too, but keep getting java.lang.IllegalStateException: getInputStream() has already been called for this request – Brian Apr 07 '20 at 20:43
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this means: someone/some filter/interceptor has already accessed `request.getReader()` ... :-( – xerx593 Apr 07 '20 at 20:45
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Yup I figured as much :( Problem is, its gotta be some spring magic doing it, because I haven even gotten to my code yet, nor do I have any other interceptors :( – Brian Apr 07 '20 at 20:46
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Ultimately I was able to solve the issue by creating a class that extends RequestBodyAdviceAdapter.
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2Brian could you please add some more details about the solution? – Giulio Pulina Jul 07 '21 at 15:26