Java Code Examples for org.springframework.web.servlet.support.RequestContextUtils#getInputFlashMap()

/**
 * Retrieves the URL path to use for lookup and delegates to
 * {@link #getViewNameForRequest}. Also adds the content of
 * {@link RequestContextUtils#getInputFlashMap} to the model.
 */
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) {
	String viewName = getViewNameForRequest(request);
	if (logger.isTraceEnabled()) {
		logger.trace("Returning view name '" + viewName + "'");
	}
	return new ModelAndView(viewName, RequestContextUtils.getInputFlashMap(request));
}
 

/**
 * Retrieves the URL path to use for lookup and delegates to
 * {@link #getViewNameForRequest}. Also adds the content of
 * {@link RequestContextUtils#getInputFlashMap} to the model.
 */
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) {
	String viewName = getViewNameForRequest(request);
	if (logger.isTraceEnabled()) {
		logger.trace("Returning view name '" + viewName + "'");
	}
	return new ModelAndView(viewName, RequestContextUtils.getInputFlashMap(request));
}
 

/**
 * Retrieves the URL path to use for lookup and delegates to
 * {@link #getViewNameForRequest}. Also adds the content of
 * {@link RequestContextUtils#getInputFlashMap} to the model.
 */
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) {
	String lookupPath = getUrlPathHelper().getLookupPathForRequest(request);
	String viewName = getViewNameForRequest(request);
	if (logger.isDebugEnabled()) {
		logger.debug("Returning view name '" + viewName + "' for lookup path [" + lookupPath + "]");
	}
	return new ModelAndView(viewName, RequestContextUtils.getInputFlashMap(request));
}
 

/**
 * Retrieves the URL path to use for lookup and delegates to
 * {@link #getViewNameForRequest}. Also adds the content of
 * {@link RequestContextUtils#getInputFlashMap} to the model.
 */
@Override
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) {
	String lookupPath = getUrlPathHelper().getLookupPathForRequest(request);
	String viewName = getViewNameForRequest(request);
	if (logger.isDebugEnabled()) {
		logger.debug("Returning view name '" + viewName + "' for lookup path [" + lookupPath + "]");
	}
	return new ModelAndView(viewName, RequestContextUtils.getInputFlashMap(request));
}
 

/**
 * Handles the return from a multi-value lookup, processing any select line values and invoking the
 * configured view helper service to create the lines for those values in the model collection.
 *
 * <p>There are two supported strategies for returning the selected lines. One, if the lookup view
 * and the caller are within the same application container, Springs input flash map is used. If however,
 * the lookup view is outside the caller, then just a standard request parameter is used.</p>
 *
 * @param form form instance containing the model data
 * @param request http request object being handled
 */
protected void processMultiValueReturn(final UifFormBase form, HttpServletRequest request) {
    final String lookupCollectionId = request.getParameter(UifParameters.LOOKUP_COLLECTION_ID);

    final String lookupCollectionName = request.getParameter(UifParameters.LOOKUP_COLLECTION_NAME);
    if (StringUtils.isBlank(lookupCollectionName)) {
        throw new RuntimeException("Lookup collection name is required for processing multi-value lookup results");
    }

    final String multiValueReturnFields = request.getParameter(UifParameters.MULIT_VALUE_RETURN_FILEDS);
    String selectedLineValuesParam = request.getParameter(UifParameters.SELECTED_LINE_VALUES);

    String flashMapSelectedLineValues = "";
    if (RequestContextUtils.getInputFlashMap(request) != null) {
        flashMapSelectedLineValues = (String) RequestContextUtils.getInputFlashMap(request).get(
                UifParameters.SELECTED_LINE_VALUES);
    }

    if (!StringUtils.isBlank(flashMapSelectedLineValues)) {
        selectedLineValuesParam = flashMapSelectedLineValues;
    }

    final String selectedLineValues = selectedLineValuesParam;

    Runnable runnable = new Runnable() {
        @Override
        public void run() {
            // invoked view helper to populate the collection from lookup results
            ViewLifecycle.getHelper().processMultipleValueLookupResults(form, lookupCollectionId,
                    lookupCollectionName, multiValueReturnFields, selectedLineValues);
        }
    };

    ViewLifecycle.encapsulateLifecycle(form.getView(), form, form.getViewPostMetadata(), null, request, runnable);
}
 

@GetMapping("/poem/success")
public String getSuccess(HttpServletRequest request) {
    Map<String, ?> inputFlashMap = RequestContextUtils.getInputFlashMap(request);
    if (inputFlashMap != null) {
        Poem poem = (Poem) inputFlashMap.get("poem");
        return "success";
    } else {
        return "redirect:/poem/submit";
    }
}