Spring Boot Fix @RequestMapping error on paths with dots or file extensions

gistfile1.groovy

// I made one of my @Configuration classes extend org.springframework.beans.factory.config.BeanPostProcessor

// There probably is a better way to intecept the ContentNegotiationManager when it is being updated but I couldn't figure out how

// This solved the problems I had better than using the {id:.+} regular expression in path variables idea I've seen on other fixes.

    @Override
    Object postProcessBeforeInitialization(Object bean, String name) throws BeansException {
        if (bean instanceof RequestMappingHandlerMapping) {
            // handle when dots in url path
            def mapping = bean as RequestMappingHandlerMapping
            mapping.useSuffixPatternMatch = false

            // Separate problem when end of path looks like a common extension
            // for example: files/filename.csv
            // Luckily Groovy doesn't give a crap about private fields, lol
            def manager = mapping.getContentNegotiationManager()
            manager.contentNegotiationStrategies.clear()
        }
        return bean;
    }

    @Override
    Object postProcessAfterInitialization(Object bean, String name) throws BeansException {
        return bean
    }