+ private static Map<String, List<String>> queryToMap(URI uri) {
+ return queryToMap(uri.getQuery());
+ }
+
+ private static Map<String, List<String>> queryToMap(String queryPart) {
+ try {
+ final Map<String, List<String>> query_pairs = new LinkedHashMap<String, List<String>>();
+ if (queryPart == null)
+ return query_pairs;
+ final String[] pairs = queryPart.split("&");
+ for (String pair : pairs) {
+ final int idx = pair.indexOf("=");
+ final String key = idx > 0 ? URLDecoder.decode(pair.substring(0, idx), StandardCharsets.UTF_8.name())
+ : pair;
+ if (!query_pairs.containsKey(key)) {
+ query_pairs.put(key, new LinkedList<String>());
+ }
+ final String value = idx > 0 && pair.length() > idx + 1
+ ? URLDecoder.decode(pair.substring(idx + 1), StandardCharsets.UTF_8.name())
+ : null;
+ query_pairs.get(key).add(value);
+ }
+ return query_pairs;
+ } catch (UnsupportedEncodingException e) {
+ throw new IllegalArgumentException("Cannot convert " + queryPart + " to map", e);
+ }
+ }
+