[Solved] Cannot call sendError() after the response has been committed

Background of error reporting: when working on the open source project “Ruiji takeout”, after writing the interceptor code, when the front-end logs in, the back-end reports an error as follows:




I found that my code, at the very beginning of the method, has unconditionally released any resources, i.e. filterChain.doFilter(request, response); when this line of code, and then continue to write the code to execute the response, it will report the above error. So, just comment out this line of code.

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