[rabbitmq-discuss] How to close connection and channel when an exception occur
Phil
cwstorm at gmail.com
Fri Sep 27 15:24:07 BST 2013
Okay. Here's my code:
ConnectionFactory factory = new ConnectionFactory();
factory.setUri("amqp://guest:guest@host:5672");
Connection conn = factory.newConnection();
Channel channel = conn.createChannel();
Got compiling error:
unreported exception java.net.URISyntaxException; must be caught or
declared to be thrown
factory.setUri("");
^
unreported exception java.io.IOException; must be caught or declared to be
thrown
Connection conn = factory.newConnection();
^
unreported exception java.io.IOException; must be caught or declared to be
thrown
Channel channel = conn.createChannel();
On Friday, September 27, 2013 10:13:24 AM UTC-4, Phil wrote:
>
> Thank you everyone and you guys are absolutely correct. I thought I had
> to declare the connection and channel inside the try block because
> exception need to be thrown or caught.
>
> Sent from mobile device with autocorrect.
>
> Phil
>
> > On Sep 27, 2013, at 9:40 AM, Tim Watson <tim at rabbitmq.com> wrote:
> >
> > Phil,
> >
> >> On 27 Sep 2013, at 14:31, Phil wrote:
> >> I'm a newbie on RabbitMQ. I'm writing a java service to consume a
> message from the queue. Everything is working as designed but I cannot
> seem to code "channel.close() or conn.close()" in the catch or finally
> block. Java is complaining about that the "cannot find symbol".
> >>
> >> symbol : variable channel
> >> location: class RouteToMercury.javaServices
> >> channel.close();
> >
> > It's impossible to help with a compiler error if you don't post that
> code that you're trying to compile.
> >
> >> Can I close the connection and channel if an exception occur?
> >
> > Yes, absolutely. The above looks like a scoping issue. I suspect you've
> done something like...
> >
> > try {
> > final Channel channel = connection.createChannel();
> > doSomeWork(channel);
> > } finally {
> > channel.close();
> > }
> >
> > Am I right? If so, you need to move the channel variable to the outer
> scope.
> >
> > Cheers,
> > Tim
> > _______________________________________________
> > rabbitmq-discuss mailing list
> > rabbitmq-discuss at lists.rabbitmq.com
> > https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
>
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