我正在尝试在Apache上实现一个远程侦听器，但由于某种原因，注册似乎失败了，请使用以下代码。
IgniteMessaging message = ignite.message(ignite.cluster());
message.remoteListen("topic1", new IgniteBiPredicate<UUID, String>() {
@Override
public boolean apply(UUID e1, String e2) {
System.out.println("message received" + e2);
return true;
}
});
但是我在注册时遇到以下错误。
Exception in thread "main" class org.apache.ignite.spi.IgniteSpiException: Failed to marshal custom event: StartRoutineDiscoveryMessage [startReqData=StartRequestData [prjPred=AlwaysTruePredicate [], clsName=null, depInfo=null, hnd=GridMessageListenHandler [pred=independent.messaging.Receiver$1@e24ddd0, clsName=null, depInfo=null, depEnabled=false], bufSize=1, interval=0, autoUnsubscribe=false], keepBinary=false, routineId=13f09f06-4ebe-4cc8-9671-54162472df15]
at org.apache.ignite.spi.discovery.tcp.ServerImpl.sendCustomEvent(ServerImpl.java:773)
at org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi.sendCustomEvent(TcpDiscoverySpi.java:453)
at org.apache.ignite.internal.managers.discovery.GridDiscoveryManager.sendCustomEvent(GridDiscoveryManager.java:2090)
at org.apache.ignite.internal.processors.continuous.GridContinuousProcessor.startRoutine(GridContinuousProcessor.java:748)
at org.apache.ignite.internal.IgniteMessagingImpl.remoteListen(IgniteMessagingImpl.java:212)
at independent.messaging.Receiver.listenForMessages(Receiver.java:71)
at independent.messaging.Receiver.main(Receiver.java:55)
Caused by: class org.apache.ignite.IgniteCheckedException: Failed to serialize object: StartRoutineDiscoveryMessage [startReqData=StartRequestData [prjPred=AlwaysTruePredicate [], clsName=null, depInfo=null, hnd=GridMessageListenHandler [pred=independent.messaging.Receiver$1@e24ddd0, clsName=null, depInfo=null, depEnabled=false], bufSize=1, interval=0, autoUnsubscribe=false], keepBinary=false, routineId=13f09f06-4ebe-4cc8-9671-54162472df15]
at org.apache.ignite.marshaller.jdk.JdkMarshaller.marshal0(JdkMarshaller.java:85)
at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.marshal(AbstractNodeNameAwareMarshaller.java:70)
at org.apache.ignite.marshaller.jdk.JdkMarshaller.marshal0(JdkMarshaller.java:99)
at org.apache.ignite.marshaller.AbstractNodeNameAwareMarshaller.marshal(AbstractNodeNameAwareMarshaller.java:58)
at org.apache.ignite.internal.util.IgniteUtils.marshal(IgniteUtils.java:9815)
at org.apache.ignite.spi.discovery.tcp.ServerImpl.sendCustomEvent(ServerImpl.java:769)
... 6 more
Caused by: java.io.NotSerializableException: independent.messaging.Receiver
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.apache.ignite.internal.GridMessageListenHandler.writeExternal(GridMessageListenHandler.java:244)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1459)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1430)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.apache.ignite.internal.processors.continuous.StartRequestData.writeExternal(StartRequestData.java:241)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1459)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1430)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.apache.ignite.marshaller.jdk.JdkMarshaller.marshal0(JdkMarshaller.java:80)
... 11 more
出现此错误的可能原因是什么？
答案 0 :(得分：2)
您的IgniteBiPredicate将被序列化并发送到其他节点，因此，在您的情况下，由于此类是匿名的，外部类也将被序列化。
我建议使用此实现为谓词创建私有静态类，并创建它的实例作为remoteListen方法的参数