Question

java.lang.OutOfMemoryError: Java heap space
        at com.sun.org.apache.xerces.internal.impl.io.UTF8Reader.<init>(UTF8Reader.java:122)
        at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.createReader(XMLEntityManager.java:2344)
        at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:684)
        at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:189)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:812)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
        at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:203)
        at com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:175)
        at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:140)
        at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:123)
        at org.glassfish.jersey.message.internal.XmlRootElementJaxbProvider.readFrom(XmlRootElementJaxbProvider.java:140)
        at org.glassfish.jersey.message.internal.AbstractRootElementJaxbProvider.readFrom(AbstractRootElementJaxbProvider.java:122)
        at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.invokeReadFrom(ReaderInterceptorExecutor.java:239)
        at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor$TerminalReaderInterceptor.aroundReadFrom(ReaderInterceptorExecutor.java:211)
        at org.glassfish.jersey.message.internal.ReaderInterceptorExecutor.proceed(ReaderInterceptorExecutor.java:139)
        at org.glassfish.jersey.message.internal.MessageBodyFactory.readFrom(MessageBodyFactory.java:1109)
        at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:853)
        at org.glassfish.jersey.message.internal.InboundMessageContext.readEntity(InboundMessageContext.java:785)
        at org.glassfish.jersey.client.ClientResponse.readEntity(ClientResponse.java:267)
        at org.glassfish.jersey.client.InboundJaxrsResponse$1.call(InboundJaxrsResponse.java:111)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
        at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
        at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:397)
        at   org.glassfish.jersey.client.InboundJaxrsResponse.readEntity(InboundJaxrsResponse.java:108)

我的堆空间是-Xmx256m。这是这个问题的原因吗？如果它增加到-Xmx2g，它可能会在一段时间后失败。但我不认为这是正确的解决方案。请帮忙。

Answer 1

是的。堆被过度分配。解决其他问题然后增加堆空间的唯一方法是查看正在使用所有堆空间的内容，然后尝试确保可以收集的对象在需要时保留更长时间。如果它是一个文件或者某些无法收集的东西会使你的堆空间不足，那么如果文件大小不稳定并且不断变化，你应该重新设计你的程序。如果它们是常量，只需将堆空间增加到文件大小之上。

java.lang.OutOfMemoryError：Java堆空间

1 个答案: