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// Make framework objects available to handlers and view objects.

request.setAttribute(WEB_APPLICATION_CONTEXT_ATTRIBUTE, getWebApplicationContext());

request.setAttribute(LOCALE_RESOLVER_ATTRIBUTE, this.localeResolver);

request.setAttribute(THEME_RESOLVER_ATTRIBUTE, this.themeResolver);

request.setAttribute(THEME_SOURCE_ATTRIBUTE, getThemeSource());

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protected HttpServletRequest checkMultipart(HttpServletRequest request) throws MultipartException {

if (this.multipartResolver != null && this.multipartResolver.isMultipart(request)) {

        if (WebUtils.getNativeRequest(request, MultipartHttpServletRequest.class) != null) {

                if (DispatcherType.REQUEST.equals(request.getDispatcherType())) {

                        logger.trace("Request already resolved to MultipartHttpServletRequest, e.g. by MultipartFilter");

                }

        }

        else if (hasMultipartException(request)) {

                logger.debug("Multipart resolution previously failed for current request - " +

                                "skipping re-resolution for undisturbed error rendering");

        }

        else {

                try {

                        return this.multipartResolver.resolveMultipart(request);

                }

                catch (MultipartException ex) {

                        if (request.getAttribute(WebUtils.ERROR_EXCEPTION_ATTRIBUTE) != null) {

                                logger.debug("Multipart resolution failed for error dispatch", ex);

                                // Keep processing error dispatch with regular request handle below

                        }

                        else {

                                throw ex;

                        }

                }

        }

}

// If not returned before: return original request.

return request;

}

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protected HandlerExecutionChain getHandler(HttpServletRequest request) throws Exception {

        if (this.handlerMappings != null) {

                for (HandlerMapping mapping : this.handlerMappings) {

                        HandlerExecutionChain handler = mapping.getHandler(request);

                        if (handler != null) {

                                return handler;

                        }

                }

        }

        return null;

}

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private void applyDefaultViewName(HttpServletRequest request, @Nullable ModelAndView mv) throws Exception {

        if (mv != null && !mv.hasView()) {

                String defaultViewName = getDefaultViewName(request);

                if (defaultViewName != null) {

                        mv.setViewName(defaultViewName);

                }

        }

}