有沒有辦法在Java中使用pelops時發現連接錯誤?我有下面的代碼,但由於某種原因,我沒有去我的catch塊。Pelops - 連接錯誤?
public static Boolean testDBConnection() throws PelopsException {
try{
Cluster cluster = new Cluster("127.0.0.1", 9160);
Pelops.addPool(pool, cluster, keyspace);
Pelops.shutdown();
return true;
}
catch(PelopsException e)
{
System.out.println("SOMETHING WENT WRONG!");
System.out.println(e.getMessage());
return false;
}
}
這可能很容易,但我似乎無法得到它的工作。我看到了異常,但是我無法理解這一點?有人能帶我走向正確的方向嗎?
謝謝!在Eclipse控制檯被返回的異常...
15:47:33.545 [main] DEBUG o.s.c.pelops.pool.CommonsBackedPool - Made new connection 'Connection[Testing][127.0.0.1:9160][724408050]'
15:47:34.545 [main] ERROR o.scale7.cassandra.pelops.Connection - Failed to open transport. See cause for details...
org.apache.thrift.transport.TTransportException: java.net.ConnectException: Connection refused: connect
at org.apache.thrift.transport.TSocket.open(TSocket.java:185) ~[libthrift-0.5.0.jar:na]
at org.apache.thrift.transport.TFramedTransport.open(TFramedTransport.java:81) ~[libthrift-0.5.0.jar:na]
at org.scale7.cassandra.pelops.Connection.open(Connection.java:70) ~[scale7-pelops-0.913.jar:na]
at org.scale7.cassandra.pelops.pool.CommonsBackedPool$ConnectionFactory.makeObject(CommonsBackedPool.java:785) [scale7-pelops-0.913.jar:na]
at org.apache.commons.pool.impl.GenericKeyedObjectPool.addObject(GenericKeyedObjectPool.java:1685) [commons-pool-1.5.5.jar:1.5.5]
at org.apache.commons.pool.impl.GenericKeyedObjectPool.ensureMinIdle(GenericKeyedObjectPool.java:2058) [commons-pool-1.5.5.jar:1.5.5]
at org.apache.commons.pool.impl.GenericKeyedObjectPool.preparePool(GenericKeyedObjectPool.java:1722) [commons-pool-1.5.5.jar:1.5.5]
at org.scale7.cassandra.pelops.pool.CommonsBackedPool.addNode(CommonsBackedPool.java:373) [scale7-pelops-0.913.jar:na]
at org.scale7.cassandra.pelops.pool.CommonsBackedPool.<init>(CommonsBackedPool.java:104) [scale7-pelops-0.913.jar:na]
at org.scale7.cassandra.pelops.pool.CommonsBackedPool.<init>(CommonsBackedPool.java:64) [scale7-pelops-0.913.jar:na]
at org.scale7.cassandra.pelops.pool.CommonsBackedPool.<init>(CommonsBackedPool.java:52) [scale7-pelops-0.913.jar:na]
at org.scale7.cassandra.pelops.Pelops.addPool(Pelops.java:25) [scale7-pelops-0.913.jar:na]
at libraries.cassandra.testDBConnection(cassandra.java:192) [classes/:na]
at libraries.cassandra.main(cassandra.java:38) [classes/:na]
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.6.0_25]
at java.net.PlainSocketImpl.doConnect(Unknown Source) ~[na:1.6.0_25]
at java.net.PlainSocketImpl.connectToAddress(Unknown Source) ~[na:1.6.0_25]
at java.net.PlainSocketImpl.connect(Unknown Source) ~[na:1.6.0_25]
at java.net.SocksSocketImpl.connect(Unknown Source) ~[na:1.6.0_25]
at java.net.Socket.connect(Unknown Source) ~[na:1.6.0_25]
at org.apache.thrift.transport.TSocket.open(TSocket.java:180) ~[libthrift-0.5.0.jar:na]
... 13 common frames omitted
當你說異常正在通過,他們在哪裏通過? – Kal 2011-06-13 23:09:21
那麼在我的控制檯上,在eclipse中,我可以看到連接異常通過,但我無法捕捉它...編輯上面的示例,以便您可以看到異常。 – 2011-06-13 23:10:32