@Override
public Object provide() {
ContainerRequest request = getContainerRequest();
Form form = getCachedForm(request, decode);
if (form == null) {
Form otherForm = getCachedForm(request, !decode);
if (otherForm != null) {
form = switchUrlEncoding(request, otherForm);
cacheForm(request, form);
} else {
form = getForm(request);
cacheForm(request, form);
}
}
try {
return extractor.extract(form.asMap());
} catch (ExtractorException e) {
throw new ParamException.FormParamException(
e.getCause(), extractor.getName(), extractor.getDefaultValueString());
}
}
private Form switchUrlEncoding(final ContainerRequest request, final Form otherForm) {
final Set<Map.Entry<String, List<String>>> entries = otherForm.asMap().entrySet();
MultivaluedMap<String, String> formMap = new NullableMultivaluedHashMap<>();
for (Map.Entry<String, List<String>> entry : entries) {
final String charsetName =
ReaderWriter.getCharset(
MediaType.valueOf(request.getHeaderString(HttpHeaders.CONTENT_TYPE)))
.name();
String key;
try {
key =
decode
? URLDecoder.decode(entry.getKey(), charsetName)
: URLEncoder.encode(entry.getKey(), charsetName);
for (String value : entry.getValue()) {
if (value != null) {
formMap.add(
key,
decode
? URLDecoder.decode(value, charsetName)
: URLEncoder.encode(value, charsetName));
} else {
formMap.add(key, null);
}
}
} catch (UnsupportedEncodingException uee) {
throw new ProcessingException(
LocalizationMessages.ERROR_UNSUPPORTED_ENCODING(charsetName, extractor.getName()),
uee);
}
}
return new Form(formMap);
}