How can i make HttpServer recognise special C

Bonjour,

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i want to make some Sql query with my java HttpServer but i seems to be that the HttpServer don't recognise special characters the link i must submit into my browser is like :

[1]: http://localhost:8001/test?query=SELECT * WHERE{ ?s rdf:type ?o. }

but i always recieve this response :

400 Bad Request URISyntaxException thrown

this is the code for my server :

public class SimpleHttpServer {

public static void main(String[] args) throws Exception {

dir = args[0];
HttpServer server = HttpServer.create(new InetSocketAddress(8001), 0);
server.createContext("/test", new MyHandler());
server.setExecutor(null);
server.start();
}

static class MyHandler implements HttpHandler {
public void handle(HttpExchange t) throws IOException {
String response ;
System.out.println(t.getRequestURI().getQuery().toString().replaceAll("query=", ""));
response = ExecuteHttpQuery.getInstance().httpQuery(t.getRequestURI().getQuery().toString().replaceAll("query=", "").toString(), dir) + "\n";
t.sendResponseHeaders(200, response.length());
OutputStream os = t.getResponseBody();
os.write(response.getBytes());
os.close();
}
}

} can anyone help me please ?

Many thanks.