I am using the last.fm API for JAVA which can be found here .
I have a huge Dataset in which I am only using the file with user's artist history and plays. I have written a code in Java which extracts these artist names and returns the similar artists based on Artist.getSimilar()
method.
I ran it once but not for all the artists. I terminated the debugging half way through. However next time,my results were being returned from the cache and no longer was the request sent to the web-server. The problem is, this time I am getting results only till the artist where I had terminated the results. I tried using another method for the artists=Artist.getTopAlbums()
, where I terminated mid way and faced the same problem next time. The error I am getting is:
[Fatal Error] :513:9: <strong>XML document structures must start and end within the same entity.</strong>
Exception in thread "main" de.umass.lastfm.CallException: org.xml.sax.SAXParseException; lineNumber: 513; columnNumber: 9; XML document structures must start and end within the same entity.
Caused by: org.xml.sax.SAXParseException; lineNumber: 513; columnNumber: 9; XML document structures must start and end within the same entity.
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:251)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:300)
and a bunch of other exceptions which is not the important part here.
I tried reinstalling eclipse, starting eclipse in -clean
mode and cleaning the workspace. Nothing worked. I created a new workspace too but the cache keeps coming back. I am using Eclipse 3.8 . Maybe an efficient way to clear the cache in eclipse would help? How would I do that. Nothing seems to work. (Also there is no option to manually clean the cache in Window>Preferences as was suggested in many articles).
Or do I need to do something else? Any help is much appreciated. Thanks in advance.
My java code (which is working perfectly fine,no errors in this):
//in main
BufferedReader inp = new BufferedReader (new InputStreamReader(System.in));
String sinput=inp.readLine();
System.out.println(sinput+"\t \t \t"+getSimilarartists(sinput));
//to fetch similar artists
public static StringBuilder getSimilarartists(String artist){
String key = "af2bfbcb4dd49870fdb8e92f128f4ff7";
StringBuilder sb = new StringBuilder();
String art=(Artist.getSimilar(artist, key)).toString();
int i=0;
while(i<art.length()-5){
if((art.substring(i, (i+4))).equalsIgnoreCase("name")){
i=i+6;
while(art.charAt(i)!='\''){
sb.append(art.charAt(i));
i++;
}
break;
}
i++;
}
return sb;
}
Output(just the last few lines):
hans zimmer; I recommend=Hans Zimmer & James Newton Howard<br>
nelly furtado; I recommend=Jennifer Lopez<br>
madonna; I recommend=Kylie Minogue<br>
blink-182; I recommend=Box Car Racer<br>
dave gahan; I recommend=Depeche Mode<br>
kelly clarkson; I recommend=Carrie Underwood<br>
lucie silvas; I recommend=Delta Goodrem<br>
natalie imbruglia; I recommend=Melanie C<br>
michelle branch; I recommend=The Wreckers<br>
delta goodrem; I recommend=Ricki-Lee<br>
new order; I recommend=Electronic<br>
seal; I recommend=Simply Red<br>
atomic kitten; I recommend=Liberty X
*** (this is where I had terminated my previous run) ***
[Fatal Error] :513:9: XML document structures must start and end within the same entity.<br>
Exception in thread "main" de.umass.lastfm.CallException: org.xml.sax.SAXParseException; lineNumber: 513; columnNumber: 9; XML document structures must start and end within the same entity.
at de.umass.lastfm.Caller.call(Caller.java:268)<br>
at de.umass.lastfm.Caller.call(Caller.java:189)<br>
at de.umass.lastfm.Caller.call(Caller.java:185)<br>
at de.umass.lastfm.Artist.getSimilar(Artist.java:144)<br>
at de.umass.lastfm.Artist.getSimilar(Artist.java:132)<br>
at Recommender.getSimilarartists(Recommender.java:89)<br>
at Recommender.main(Recommender.java:58)<br>
Caused by: org.xml.sax.SAXParseException; lineNumber: 513; columnNumber: 9; XML document structures must start and end within the same entity.<br>
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:251)
at <br>
com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:300)<br>
at de.umass.lastfm.Caller.createResultFromInputStream(Caller.java:324)<br>
at de.umass.lastfm.Caller.call(Caller.java:256)<br>
... 6 more
Errors like this are usually indicative of a badly formatted document:
Caused by: org.xml.sax.SAXParseException; lineNumber: 513; columnNumber: 9; XML document structures must start and end within the same entity. at
A few things you can do to debug this: