javax.ejb.EJBException：发送请求时出错[原因：java.io.OptionalDataException]
[英]javax.ejb.EJBException: Error while sending a request[Caused by: java.io.OptionalDataException]
问题描述
I have an EJB call from client side like this: 
我从客户端发出了这样的EJB调用：
Portfolio[] ptfTab = ServicesMgr.getInstance().getPortfolioService().getPortfolios();
getPortfolioService() returns an instance of PortfolioFinderDelegate (EJB client interface). getPortfolioService（）返回PortfolioFinderDelegate（EJB客户端接口）的实例。 The EJB service from client side has this signature: 来自客户端的EJB服务具有以下签名：
public interface PortfolioFinder extends IBasic {
Portfolio[] getPortfolios();
}
For the EJB on server side, the implementation of the method is: 对于服务器端的EJB，该方法的实现为：
public Portfolio[] getPortfolios() {
List<Portfolio> portfolioList = getPortfoliosAsList();
return portfolioList.toArray(new Portfolio[portfolioList.size()]);
}
The method getPortfolioAsList() is a private method: 方法getPortfolioAsList（）是私有方法：
private List<Portfolio> getPortfoliosAsList() {
List<Portfolio> portfolioList = new ArrayList<Portfolio>();
LOCK.readLock().lock();
try {
List<String> keys = portfolioCache.getKeys();
for (Iterator<String> iterator = keys.iterator(); iterator.hasNext();)
{
String codeport = iterator.next();
Set<Portfolio> s =(Set<Portfolio>) portfolioCache.get(codeport) .getValue();
portfolioList.addAll(s);
}
} catch (Throwable e) {
LOGGER.error(e.getMessage(), e);
} finally {
LOCK.readLock().unlock();
}
return portfolioList;
}
Yesterday, I got a strange stack trace like this, I have never encountered it before and I am sure the portfolio cache on server side is not empty. 昨天，我得到了一个奇怪的堆栈跟踪，这是我之前从未见过的，并且我确信服务器端的投资组合缓存不为空。 Besides, there is no error log on server side. 此外，服务器端没有错误日志。 When the first client encounters this error, all the client have it then. 当第一个客户端遇到此错误时，所有客户端都将收到该错误。 Is this issue related to the size of the returned object? 这个问题与返回对象的大小有关吗？ (because the cache size is increasing every day) Is there a limit of object size when data are serialized and deserialized through EJB? （因为高速缓存的大小每天都在增加）通过EJB对数据进行序列化和反序列化时，对象大小是否受到限制？
2019-02-26 14:51:35 ERROR [StartupMgr][EJBPortfolioMgr.java:57] : Error while sending a request
javax.ejb.EJBException: Error while sending a request
at org.ow2.easybeans.proxy.client.ClientRPCInvocationHandler.invoke(ClientRPCInvocationHandler.java:205)
at org.ow2.easybeans.proxy.client.ClientRPCInvocationHandler.invoke(ClientRPCInvocationHandler.java:117)
at com.sun.proxy.$Proxy33.getPortfolios(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.clam.mediaplus.client.services.ProxyRemoteObject.invoke(ProxyRemoteObject.java:87)
at com.sun.proxy.$Proxy33.getPortfolios(Unknown Source)
at client.delegate.common.PortfolioFinderDelegate.getPortfolios(PortfolioFinderDelegate.java:46)
at com.casits.rambo.dao.portfolio.EJBPortfolioMgr.reload(EJBPortfolioMgr.java:42)
at com.casits.rambo.dao.portfolio.AbstractPortfolioMgr.<init>(AbstractPortfolioMgr.java:24)
at com.casits.rambo.dao.portfolio.EJBPortfolioMgr.<init>(EJBPortfolioMgr.java:31)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:72)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:948)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:901)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at com.casits.rambo.dao.common.CommonBeanFactory.getPortfolioMgr(CommonBeanFactory.java:54)
at com.casits.rambo.dao.portfolio.PortfolioMgr.getAttribPortfolio(PortfolioMgr.java:82)
at com.casits.rambo.dao.portfolio.PortfolioMgr.getAttribPortfolio(PortfolioMgr.java:151)
at com.casits.rambo.dao.portfolio.PortfolioMgr$2.processRow(PortfolioMgr.java:217)
at org.springframework.jdbc.core.JdbcTemplate$RowCallbackHandlerResultSetExtractor.extractData(JdbcTemplate.java:1408)
at org.springframework.jdbc.core.JdbcTemplate$1QueryStatementCallback.doInStatement(JdbcTemplate.java:445)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:395)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:455)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:459)
at com.casits.rambo.dao.portfolio.PortfolioMgr.getAllAttribPortfolios(PortfolioMgr.java:207)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.getAllAttribCodeports(RefPortfolioMgr.java:257)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.refreshAttribCodeports(RefPortfolioMgr.java:243)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.init(RefPortfolioMgr.java:221)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.<init>(RefPortfolioMgr.java:239)
at com.casits.attrib.refptf.controller.RefPortfolioMgr.<clinit>(RefPortfolioMgr.java:191)
at com.casits.attrib.refptf.RefPtfModule.init(RefPtfModule.java:80)
at com.casits.attrib.attribcommon.AbstractModule.load(AbstractModule.java:70)
at com.casits.attrib.main.MainJFrame.executeEnableModule(MainJFrame.java:418)
at com.casits.attrib.main.MainJFrame.addModule(MainJFrame.java:336)
at com.casits.attrib.main.MainGUI.createAndShowGUI(MainGUI.java:80)
at com.casits.attrib.main.StartupMgr.init(StartupMgr.java:82)
at com.casits.attrib.attribcommon.manager.AttribUserMgr$1.run(AttribUserMgr.java:390)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Error while handling answer on the remote side
at org.ow2.easybeans.rpc.rmi.client.RMIClientRPC.sendEJBRequest(RMIClientRPC.java:116)
at org.ow2.easybeans.proxy.client.ClientRPCInvocationHandler.invoke(ClientRPCInvocationHandler.java:202)
... 49 more
Caused by: java.rmi.UnmarshalException: IOException unmarshalling returnjava.io.OptionalDataException; nested exception is:
java.io.OptionalDataException
at org.ow2.carol.rmi.jrmp.server.JUnicastRef.performRemoteCall(JUnicastRef.java:212)
at org.ow2.carol.rmi.jrmp.server.JUnicastRef.invoke(JUnicastRef.java:161)
at org.ow2.easybeans.rpc.rmi.server.RMIServerRPCImpl_Stub.getEJBResponse(RMIServerRPCImpl_Stub.java:60)
at org.ow2.easybeans.rpc.rmi.client.RMIClientRPC.sendEJBRequest(RMIClientRPC.java:114)
... 50 more
Caused by: java.io.OptionalDataException
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1370)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1179)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at java.util.HashMap.readObject(HashMap.java:1180)
at sun.reflect.GeneratedMethodAccessor32.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1706)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1344)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
at sun.rmi.server.UnicastRef.unmarshalValue(UnicastRef.java:325)
at org.ow2.carol.rmi.jrmp.server.JUnicastRef.performRemoteCall(JUnicastRef.java:205)
... 53 more
1 个解决方案
解决方案1
0 2019-07-11 09:17:42
In short, in our application code a complex value object (used as a return value for remote method invocations) had a HashMap datastructure as an internal field. 简而言之，在我们的应用程序代码中，复杂值对象（用作远程方法调用的返回值）具有HashMap数据结构作为内部字段。 After changing the type of this field to ConcurrentHashMap the OptionalDataExceptions stopped occurring. 将此字段的类型更改为ConcurrentHashMap后，OptionalDataExceptions停止发生。 It seems that somewhere in the legacy code this Map is handled in non thread-safe way. 似乎在旧代码的某个地方，此Map是通过非线程安全的方式处理的。
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