static HttpServletRequest getRequestWithBodyFromRequestParameters(HttpServletRequest request) throws IOException {
		ByteArrayOutputStream bos = new ByteArrayOutputStream(1024);
		Writer writer = new OutputStreamWriter(bos, FORM_CHARSET);

		Map<String, String[]> form = request.getParameterMap();
		String queryString = request.getQueryString();
		StringBuffer requestURL = request.getRequestURL();
		if (StringUtils.hasText(queryString)) {
			requestURL.append('?').append(queryString);
		}
		UriComponentsBuilder uriComponentsBuilder = UriComponentsBuilder.fromUriString(requestURL.toString());
//only pass queryParams for later parameters
		MultiValueMap<String, String> queryParams = uriComponentsBuilder.build().getQueryParams();
		for (Iterator<Map.Entry<String, String[]>> entryIterator = form.entrySet().iterator(); entryIterator
				.hasNext();) {
			Map.Entry<String, String[]> entry = entryIterator.next();
			String name = entry.getKey();
			List<String> values = Arrays.asList(entry.getValue());
			for (Iterator<String> valueIterator = values.iterator(); valueIterator.hasNext();) {
				String value = valueIterator.next();
				List<String> queryValues = queryParams.get(name);
				boolean isQueryParam = queryParams.containsKey(name) && queryValues != null
						&& queryValues.contains(value);
				if (!isQueryParam) {
					writer.write(URLEncoder.encode(name, FORM_CHARSET));
					if (value != null) {
						writer.write('=');
						writer.write(URLEncoder.encode(value, FORM_CHARSET));
						if (valueIterator.hasNext()) {
							writer.write('&');
						}
					}
				}
			}
			if (entryIterator.hasNext()) {
				writer.append('&');
			}
		}
		writer.flush();

		ByteArrayServletInputStream servletInputStream = new ByteArrayServletInputStream(
				new ByteArrayInputStream(bos.toByteArray()));
//why only use queryParams 
		return new FormContentRequestWrapper(request, queryParams) {