/**
* Parse the URL parameters into a map of (key, value) pairs.
*
* @param uri The URL that was requested.
* @return A map of (key, value) pairs corresponding to the request parameters.
* @throws UnsupportedEncodingException Thrown if we could not decode the URL with utf8.
*/
private static Map<String, String> getURLParams(URI uri) throws UnsupportedEncodingException {
if (uri.getQuery() != null) {
Map<String, String> urlParams = new HashMap<>();
String query = uri.getQuery();
String[] queryFields = query.replace("\\&", "___AMP___").split("&");
for (String queryField : queryFields) {
queryField = queryField.replace("___AMP___", "&");
int firstEq = queryField.indexOf('=');
// Convention uses "+" for spaces.
String key = URLDecoder.decode(queryField.substring(0, firstEq), "utf8");
String value = URLDecoder.decode(queryField.substring(firstEq + 1), "utf8");
urlParams.put(key, value);
}
return urlParams;
} else {
return Collections.emptyMap();
}
}
