Is there a static way to get the HttpServletRequest of the current request

Question

I am using Spring annotations, I can pass the HttpRequestContext from the Controller to the Service.

I am looking for a static way or any better soluti

Answer 1

If you are using spring you can do the following:

public static HttpServletRequest getCurrentHttpRequest(){
    RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
    if (requestAttributes instanceof ServletRequestAttributes) {
        HttpServletRequest request = ((ServletRequestAttributes)requestAttributes).getRequest();
        return request;
    }
    logger.debug("Not called in the context of an HTTP request");
    return null;
}

Answer 2

In response to @andrebrait comments above "Or the Java 8 way", the methods are present on the ServletRequestAttributes.class

    public static Optional<HttpServletRequest> getCurrentHttpRequest() {
        return
            Optional.ofNullable(
                RequestContextHolder.getRequestAttributes()
            )
            .filter(ServletRequestAttributes.class::isInstance)
            .map(ServletRequestAttributes.class::cast)
            .map(ServletRequestAttributes::getRequest);
    }

Answer 3

For reference, this would be the Kotlin way:

    val currentRequest: HttpServletRequest?
        get() = (RequestContextHolder.getRequestAttributes() as? ServletRequestAttributes)?.request

Answer 4

Or the java8 way

public static Optional<HttpServletRequest> getCurrentHttpRequest() {
    return Optional.ofNullable(RequestContextHolder.getRequestAttributes())
        .filter(requestAttributes -> ServletRequestAttributes.class.isAssignableFrom(requestAttributes.getClass()))
        .map(requestAttributes -> ((ServletRequestAttributes) requestAttributes))
        .map(ServletRequestAttributes::getRequest);
}