private String append(
String base, Map<String, ?> query, Map<String, String> keys, boolean fragment) {
UriComponentsBuilder template = UriComponentsBuilder.newInstance();
UriComponentsBuilder builder = UriComponentsBuilder.fromUriString(base);
URI redirectUri;
try {
// assume it's encoded to start with (if it came in over the wire)
redirectUri = builder.build(true).toUri();
} catch (Exception e) {
// ... but allow client registrations to contain hard-coded non-encoded values
redirectUri = builder.build().toUri();
builder = UriComponentsBuilder.fromUri(redirectUri);
}
template
.scheme(redirectUri.getScheme())
.port(redirectUri.getPort())
.host(redirectUri.getHost())
.userInfo(redirectUri.getUserInfo())
.path(redirectUri.getPath());
if (fragment) {
StringBuilder values = new StringBuilder();
if (redirectUri.getFragment() != null) {
String append = redirectUri.getFragment();
values.append(append);
}
for (String key : query.keySet()) {
if (values.length() > 0) {
values.append("&");
}
String name = key;
if (keys != null && keys.containsKey(key)) {
name = keys.get(key);
}
values.append(name + "={" + key + "}");
}
if (values.length() > 0) {
template.fragment(values.toString());
}
UriComponents encoded = template.build().expand(query).encode();
builder.fragment(encoded.getFragment());
} else {
for (String key : query.keySet()) {
String name = key;
if (keys != null && keys.containsKey(key)) {
name = keys.get(key);
}
template.queryParam(name, "{" + key + "}");
}
template.fragment(redirectUri.getFragment());
UriComponents encoded = template.build().expand(query).encode();
builder.query(encoded.getQuery());
}
return builder.build().toUriString();
}
private MultiValueMap<String, String> parseFragmentParams(UriComponents locationComponents) {
MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
String[] tuples = locationComponents.getFragment().split("&");
for (String tuple : tuples) {
String[] parts = tuple.split("=");
params.add(parts[0], parts[1]);
}
return params;
}