/**
* URL encodes a string
*
* @param plain
* @return percent encoded string
*/
public static String urlEncodeWrapper(String string) {
Preconditions.checkNotNull(string, "Cannot encode null string");
try {
return URLEncoder.encode(string, UTF_8);
} catch (UnsupportedEncodingException uee) {
throw new IllegalStateException(ERROR_MSG, uee);
}
}
/**
* Append given parameters to the query string of the url
*
* @param url the url to append parameters to
* @param params any map
* @return new url with parameters on query string
*/
public static String appendParametersToQueryString(String url, Map<String, String> params) {
Preconditions.checkNotNull(url, "Cannot append to null URL");
String queryString = URLUtils.formURLEncodeMap(params);
if (queryString.length() == 0) return url;
// Check if there are parameters in the url already and use '&' instead of '?'
url += url.indexOf(QUERY_STRING_SEPARATOR) != -1 ? PARAM_SEPARATOR : QUERY_STRING_SEPARATOR;
url += queryString;
return url;
}
/**
* Percent encodes a string
*
* @param plain
* @return percent encoded string
*/
public static String percentEncode(String string) {
Preconditions.checkNotNull(string, "Cannot encode null string");
try {
String encoded = URLEncoder.encode(string, UTF_8);
for (EncodingRule rule : ENCODING_RULES) {
encoded = rule.apply(encoded);
}
return encoded;
} catch (UnsupportedEncodingException uee) {
throw new IllegalStateException(ERROR_MSG, uee);
}
}
/**
* Turns a map into a form-url-encoded string (key=value&key2&key3=value)
*
* @param map any map
* @return form-url-encoded string
*/
public static String formURLEncodeMap(Map<String, String> map) {
Preconditions.checkNotNull(map, "Cannot url-encode a null object");
return (map.size() <= 0) ? EMPTY_STRING : doFormUrlEncode(map);
}