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https://issues.apache.org/jira/browse/CXF-2242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12713973#action_12713973
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Nacho G. Mac Dowell commented on CXF-2242:
------------------------------------------
Workaround: (Since it will probably take some time to include this patch in a
release, I am including the implemented workaround)
When invoking a application/x-www-form-urlencoded service register the
following provider and everything will be fine:
public class FixedFormEncodingProvider extends FormEncodingProvider {
public void writeTo(MultivaluedMap<String, String> map, Class<?> c, Type t,
Annotation[] anns,
MediaType mt, MultivaluedMap<String, Object> headers,
OutputStream os)
throws IOException, WebApplicationException {
boolean encoded = AnnotationUtils.getAnnotation(anns, Encoded.class) !=
null;
for (Iterator<Map.Entry<String, List<String>>> it =
map.entrySet().iterator(); it.hasNext();) {
Map.Entry<String, List<String>> entry = it.next();
for (Iterator<String> entryIterator = entry.getValue().iterator();
entryIterator.hasNext();) {
String value = entryIterator.next();
os.write(entry.getKey().getBytes("UTF-8"));
os.write('=');
String data = encoded ? value : HttpUtils.urlEncode(value);
os.write(data.getBytes("UTF-8"));
if (entryIterator.hasNext()) {
os.write('&');
}
}
}
}
}
> FormEncodingProvider writes the application/x-www-form-urlencoded params
> incorrectly when multiple params with the same name are present
> ----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CXF-2242
> URL: https://issues.apache.org/jira/browse/CXF-2242
> Project: CXF
> Issue Type: Bug
> Components: REST
> Affects Versions: 2.2.1
> Reporter: Nacho G. Mac Dowell
> Attachments: FormEncodingProvider.patch
>
>
> Hi, there is a problem with FormEncodingProvider when writing the url-encoded
> string. It is checking an incorrect iterator.
> public void writeTo(MultivaluedMap<String, String> map, Class<?> c, Type
> t, Annotation[] anns,
> MediaType mt, MultivaluedMap<String, Object> headers,
> OutputStream os)
> throws IOException, WebApplicationException {
> boolean encoded = AnnotationUtils.getAnnotation(anns, Encoded.class)
> != null;
> for (Iterator<Map.Entry<String, List<String>>> it =
> map.entrySet().iterator(); it.hasNext();) {
> Map.Entry<String, List<String>> entry = it.next();
> for (String value : entry.getValue()) {
> os.write(entry.getKey().getBytes("UTF-8"));
> os.write('=');
> String data = encoded ? value : HttpUtils.urlEncode(value);
> os.write(data.getBytes("UTF-8"));
> if (it.hasNext()) {
> os.write('&');
> }
> }
> }
> }
> it.hasNext() should be checking the entry iterator and not the map iterator.
> The consequence is that & is never appended if, for example, there is only
> one parameter
> Fixed version would be:
> public void writeTo(MultivaluedMap<String, String> map, Class<?> c, Type
> t, Annotation[] anns,
> MediaType mt, MultivaluedMap<String, Object> headers,
> OutputStream os)
> throws IOException, WebApplicationException {
> boolean encoded = AnnotationUtils.getAnnotation(anns, Encoded.class)
> != null;
> for (Iterator<Map.Entry<String, List<String>>> it =
> map.entrySet().iterator(); it.hasNext();) {
> Map.Entry<String, List<String>> entry = it.next();
> for (Iterator<String> entryIterator =
> entry.getValue().iterator(); entryIterator.hasNext();) {
> String value = entryIterator.next();
> os.write(entry.getKey().getBytes("UTF-8"));
> os.write('=');
> String data = encoded ? value : HttpUtils.urlEncode(value);
> os.write(data.getBytes("UTF-8"));
> if (entryIterator.hasNext()) {
> os.write('&');
> }
> }
> }
> }
> I don't have time just now to provide test cases but a careful look should do.
> best regards
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