Exception in thread "Thread-0" java.lang.NullPointerException
at org.apache.http.impl.nio.reactor.AbstractIOReactor.closeActiveChannels(AbstractIOReactor.java:532)
at org.apache.http.impl.nio.reactor.AbstractIOReactor.hardShutdown(AbstractIOReactor.java:564)
at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.doShutdown(AbstractMultiworkerIOReactor.java:411)
at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:340)
at com.***.clawer.Clawer$1.run(Clawer.java:81)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-1" java.lang.IllegalStateException: I/O reactor has been shut down
at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.connect(DefaultConnectingIOReactor.java:190)
at com.***.clawer.Run.run(Run.java:29)
views:
55answers:
2
A:
You're using a NIO Reactor that is closed by the time you try to use it ( connect to it )
See:
java.lang.IllegalStateException: I/O reactor has been shut down
OscarRyz
2010-03-08 02:38:22
Possible, but before that, a NullPointerException occurs during doShutdown.
Thilo
2010-03-08 02:42:54
I think the worker thread stopped caused this exception, but i do not know why.
bruce dou
2010-03-09 02:30:31
@Thilo: Yes, during the shutdown, the method `AbstractIOReactor.closeActiveChannels` tries to close the reactor but it is null because that is already closed. That's the root cause.
OscarRyz
2010-03-12 01:40:24
A:
I had a look at the code, and I think that NPE is happening because getSession() is returning null.
Stephen C
2010-03-08 07:06:10