Hi all,
I want to query data from dbpedia, but meet the exception as following. I
think it a common effort that we use often.
I hope anyone can help me.
--------------------------------main code ------------------
String queryStr = "select * {<http://dbpedia.org/resource/Beijing> ?p ?o.}
limit 100";
QueryExecution qexec = QueryExecutionFactory.sparqlService("
http://dbpedia.org/sparql";, queryStr);
ResultSet results = qexec.execSelect();
-------------------------------------------------------------------
--------------------------------------Exception-------------------------
log4j:WARN No appenders could be found for logger
(com.hp.hpl.jena.util.FileManager).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for
more info.
Exception in thread "main" HttpException: java.net.SocketException:
Software caused connection abort: recv failed: java.net.SocketException:
Software caused connection abort: recv failed
at
com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:529)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.execGet(HttpQuery.java:289)
at com.hp.hpl.jena.sparql.engine.http.HttpQuery.exec(HttpQuery.java:240)
at
com.hp.hpl.jena.sparql.engine.http.QueryEngineHTTP.execSelect(QueryEngineHTTP.java:302)
at com.wds.ttl.OnlineQuery.demo(OnlineQuery.java:59)
at com.wds.ttl.OnlineQuery.main(OnlineQuery.java:39)
Caused by: java.net.SocketException: Software caused connection abort: recv
failed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:173)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:235)
at java.io.BufferedInputStream.read1(BufferedInputStream.java:275)
at java.io.BufferedInputStream.read(BufferedInputStream.java:334)
at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:687)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:633)
at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:658)
at
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1323)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
at
com.hp.hpl.jena.sparql.engine.http.HttpQuery.execCommon(HttpQuery.java:412)
... 5 more
----------------------------------------
If there is any links related to the similar problem, please send to me?
Thanks in advance!
