The XML parser in use is complaining about whitespace or characters appearing before the <?xml version="1.0"?> statement. I just ran the example on my OS X 10.4 machine and did not have trouble, though I'm using Eclipse and not Xcode.
Can you insert something like response.getEntity().write(System.out); to spot anything wrong with the XML you are getting from Yahoo (or whatever server you are hitting, if you've changed the example to be a client of something else?) - Rob ----- Original Message ----- From: "Aadjan van der Helm" <[EMAIL PROTECTED]> To: [email protected] Sent: Thursday, September 27, 2007 4:23:56 PM (GMT-0500) America/New_York Subject: Trying to run book example2_1a Dear list, I'm evaluating the restlet framework to see if we can use it to create clients for our restful image server. It's been a while since I was actively coding in java and it took a while to get an xcode project (I'm on osx 10.4.10) into a shape to get the book examples to compile and run. Now I've worked that out up to a point that eg. example 2_1a compiles but generates a runtime error: [Fatal Error] :1:1: Content is not allowed in prolog. It dies in the loop to iterate over the requested items in the document. // Use XPath to find the interesting parts of the data structure String expr = "/ResultSet/Result/Title"; for (Node node : document.getNodes(expr)) { System.out.println(node.getTextContent()); } Any clues what is going wrong? Thanks in advance, --Aadjan Run log: [Session started at 2007-09-27 22:08:45 +0200.] Sep 27, 2007 10:08:47 PM com.noelios.restlet.http.StreamClientHelper start INFO: Starting the HTTP client [Fatal Error] :1:1: Content is not allowed in prolog. Exception in thread "main" java.lang.NullPointerException at Example2_1a.main(Example2_1a.java:46) java has exited with status 1.
