There seems to be a 303 redirect. Maybe this is relevant https://stackoverflow.com/a/66325588/3210344
/Andy
What I have assessed so far is that it’s the Java Client that fails to
retrieve the result. It’s the same response that’s returned by BaseX.
String uri = "http://vocab.getty.edu/aat/300027473.rdf";
HttpClient client = HttpClient.newBuilder().build();
HttpRequest request = HttpRequest.newBuilder(URI.create(uri)).build();
BodyHandler<String> handler = HttpResponse.BodyHandlers.ofString();
HttpResponse<String> result = client.send(request, handler);
System.out.println(result.statusCode());
System.out.println(result.body());
400
<html><head><title>Apache Tomcat/7.0.42 - Error
report</title><style><!--H1
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;}
H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;}
H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;}
BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;}
B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;}
P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A
{color : black;}A.name {color : black;}HR {color :
#525D76;}--></style> </head><body><h1>HTTP Status 400 - </h1><HR
size="1" noshade="noshade"><p><b>type</b> Status
report</p><p><b>message</b> <u></u></p><p><b>description</b> <u>The
request sent by the client was syntactically incorrect.</u></p><HR
size="1" noshade="noshade"><h3>Apache Tomcat/7.0.42</h3></body></html>
So we need to find out why the server thinks the Java request is
»syntactically incorrect«. Maybe we can compare the low-level
representation of the requests with Java 9 and 10 (?).