我正在使用felix maven插件运行OSGI插件项目（N bundle），我已将hazelcast集成到其中。班级＆＃34; ConfigurationService＆＃34;创建hazelcast实例的标记是singleton，我使用默认配置创建hazelcast实例。
以下是代码段。
private static ROIConfigurationServer configService;
private HazelcastInstance hazelcastInstance;
public static ROIConfigurationServer getConfigurationService()throws ConfigServerInitializationException{
if(configService==null){
synchronized(ROIConfigurationServer.class){
try{
logger.debug("initialized ROIConfigurationServer");
HazelcastInstance hazelcastInstance=Hazelcast.newHazelcastInstance();
List<String> imapkeys=new ArrayList<>();
IMap<String,String> configGroupKeys=hazelcastInstance.getMap(ConfigurationConstant.CONFIG_GROUP_KEYS);
configService=new ROIConfigurationServer(hazelcastInstance,configGroupKeys);
}catch(Exception exp){
logger.error("ROIConfigurationServer initializatiob error", exp);
throw new ConfigServerInitializationException("Failed to initialize the ConfigServer",exp);
}
}
}
return configService;
}//end of singleton method
单身类＆＃34; ConfigurationService＆＃34;有一个addConfiguration（）方法，它将ConfigurationUnit（pojo类）对象添加到hazelcast map对象中，getConfiguration（）从hazelcast Map获取ConfigurationUnit对象并部署为bundle＆＃34; config-service＆＃34;束。
另一个名为＆＃34; feature-extender-v3＆＃34;使用扩展模式调用addConfiguration（）并成功将配置数据添加到hazelcast但是在调用getConfiguration（）时出现以下错误
完整堆栈跟踪：
ERROR: Bundle feature-extender-v3 [157] EventDispatcher: Error during dispatch. (com.hazelcast.nio.serialization.HazelcastSerializationException: java.lang.ClassNotFoundException: com.getusroi.config.server.ConfigurationUnit)
com.hazelcast.nio.serialization.HazelcastSerializationException: java.lang.ClassNotFoundException: com.getusroi.config.server.ConfigurationUnit
at com.hazelcast.nio.serialization.DefaultSerializers$ObjectSerializer.read(DefaultSerializers.java:201)
at com.hazelcast.nio.serialization.StreamSerializerAdapter.read(StreamSerializerAdapter.java:41)
at com.hazelcast.nio.serialization.SerializationServiceImpl.toObject(SerializationServiceImpl.java:276)
at com.hazelcast.spi.impl.NodeEngineImpl.toObject(NodeEngineImpl.java:200)
at com.hazelcast.map.impl.MapServiceContextImpl.toObject(MapServiceContextImpl.java:281)
at com.hazelcast.map.impl.proxy.MapProxySupport.toObject(MapProxySupport.java:1114)
at com.hazelcast.map.impl.proxy.MapProxyImpl.get(MapProxyImpl.java:82)
at com.getusroi.config.server.ROIConfigurationServer.getConfiguration(ROIConfigurationServer.java:133)
at com.getusroi.feature.config.impl.FeatureConfigurationService.getFeatureConfiguration(FeatureConfigurationService.java:41)
at com.getusroi.feature.config.impl.FeatureConfigurationService.addFeatureConfiguration(FeatureConfigurationService.java:28)
at com.getusroi.feature.resources.helper.FMIResources.getFeaturesImplementationResource(FMIResources.java:111)
at com.getusroi.feature.resources.helper.FMIResources.getEventResources(FMIResources.java:37)
at com.getusroi.feature.extender.FeatureMetaInfoExtender.addedBundle(FeatureMetaInfoExtender.java:89)
at com.getusroi.feature.bundle.tracker.BundleTracker$1.bundleChanged(BundleTracker.java:65)
at org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:870)
at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:791)
at org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:515)
at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4650)
at org.apache.felix.framework.Felix$4.run(Felix.java:2123)
at org.apache.felix.framework.Felix.runInContext(Felix.java:2147)
at org.apache.felix.framework.Felix.startBundle(Felix.java:2121)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:955)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:942)
at org.apache.karaf.shell.osgi.InstallBundle.doExecute(InstallBundle.java:51)
at org.apache.karaf.shell.console.OsgiCommandSupport.execute(OsgiCommandSupport.java:39)
at org.apache.felix.gogo.commands.basic.AbstractCommand.execute(AbstractCommand.java:35)
at org.apache.felix.gogo.runtime.CommandProxy.execute(CommandProxy.java:78)
at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:477)
at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:403)
at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:183)
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:120)
at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:89)
at org.apache.karaf.shell.console.jline.Console.run(Console.java:189)
at java.lang.Thread.run(Thread.java:745)
at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$4.doRun(ShellFactoryImpl.java:158)
at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$4$1.run(ShellFactoryImpl.java:149)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.karaf.jaas.modules.JaasHelper.doAs(JaasHelper.java:47)
at org.apache.karaf.shell.ssh.ShellFactoryImpl$ShellImpl$4.run(ShellFactoryImpl.java:147)
Caused by: java.lang.ClassNotFoundException: com.getusroi.config.server.ConfigurationUnit
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at com.hazelcast.nio.ClassLoaderUtil.tryLoadClass(ClassLoaderUtil.java:125)
at com.hazelcast.nio.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:114)
at com.hazelcast.nio.IOUtil$1.resolveClass(IOUtil.java:113)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at com.hazelcast.nio.serialization.DefaultSerializers$ObjectSerializer.read(DefaultSerializers.java:196)
... 39 more
我看了另外一个类似问题的堆栈跟踪＆＃34; com.hazelcast.nio.serialization.HazelcastSerializationException＆＃34;但是不明白。我应该如何使用默认配置而不是使用hazelcast配置解决此问题？
答案 0 :(得分：1)
您是否可以通过为指定的Config提供已配置的类加载器（类加载器可以通过setClassLoader()方法设置）来创建Hazelcast实例，该方法知道类com.getusroi.config.server.ConfigurationUnit？
问候。