我有一个使用 EJB3 的 JBoss Web 服务 (5.1) 在我们的 MSSQL 服务器上运行用于 dao 更新/插入的应用程序。
应用程序设置的一部分包括一个自定义 SOAPHandler，它用于从 ByteArray[Output/Input]Stream 中的消息中解析 xml 并将其打印到服务器日志中。
这在大多数情况下都可以正常工作，但最近我们接手了一个正在发送大量数据的新客户，并且由于预算很少（实际上不存在），我必须在旧电脑上运行我们的测试/集成服务（相信我，我不想）。
果然，没多久我就遇到了：
2012-11-21 14:20:40,128 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost]. *removed* -5) Servlet.service() for servlet *MyIface* threw exception
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:2786)
at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94)
at com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput.write(UTF8XmlOutput.java:394)
at com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput.write(UTF8XmlOutput.java:386)
at com.sun.xml.bind.v2.runtime.output.UTF8XmlOutput.endTag(UTF8XmlOutput.java:273)
at com.sun.xml.bind.v2.runtime.output.NamespaceContextImpl$Element.endElement(NamespaceContextImpl.java:493)
at com.sun.xml.bind.v2.runtime.XMLSerializer.endElement(XMLSerializer.java:310)
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:152)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:322)
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:681)
at com.sun.xml.bind.v2.runtime.property.ArrayElementNodeProperty.serializeItem(ArrayElementNodeProperty.java:65)
at com.sun.xml.bind.v2.runtime.property.ArrayElementProperty.serializeListBody(ArrayElementProperty.java:168)
at com.sun.xml.bind.v2.runtime.property.ArrayERProperty.serializeBody(ArrayERProperty.java:152)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:322)
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:681)
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:150)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:322)
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:681)
at com.sun.xml.bind.v2.runtime.property.ArrayElementNodeProperty.serializeItem(ArrayElementNodeProperty.java:65)
at com.sun.xml.bind.v2.runtime.property.ArrayElementProperty.serializeListBody(ArrayElementProperty.java:168)
at com.sun.xml.bind.v2.runtime.property.ArrayERProperty.serializeBody(ArrayERProperty.java:152)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:322)
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:681)
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:150)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:322)
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:681)
at com.sun.xml.bind.v2.runtime.property.ArrayElementNodeProperty.serializeItem(ArrayElementNodeProperty.java:65)
at com.sun.xml.bind.v2.runtime.property.ArrayElementProperty.serializeListBody(ArrayElementProperty.java:168)
at com.sun.xml.bind.v2.runtime.property.ArrayERProperty.serializeBody(ArrayERProperty.java:152)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:322)
at com.sun.xml.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:681)
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.serializeBody(SingleElementNodeProperty.java:150)
有人可以在这里给我一些关于分块解析的提示吗？我已经在其他线程中检查过这个线程，我的问题听起来与此类似，但我不知道要使用哪种 api/方法。
这是我的处理程序：
@SuppressWarnings("rawtypes")
public class MyHandler extends GenericSOAPHandler {
private void print(InputStream input, OutputStream out) throws Exception {
try {
DocumentBuilder parser;
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
parser = factory.newDocumentBuilder();
Document document = parser.parse(input);
Transformer serializer = TransformerFactory.newInstance().newTransformer();
serializer.setOutputProperty(OutputKeys.INDENT, "yes");
serializer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
serializer.transform(new DOMSource(document), new StreamResult(out));
} catch (TransformerException e) {
// A fatal error occurred
throw new Exception(e);
}
}
@Override
protected boolean handleInbound(MessageContext msgContext) {
SOAPMessageContext soapMessageCtx = (SOAPMessageContext) msgContext;
SOAPMessage soapMessage = soapMessageCtx.getMessage();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try {
soapMessage.writeTo(outputStream);
byte[] array = outputStream.toByteArray();
ByteArrayInputStream inputStream = new ByteArrayInputStream(array);
System.out.println("SOAP request message:\n");
print(inputStream, System.out);
} catch (SOAPException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
@Override
protected boolean handleOutbound(MessageContext msgContext) {
SOAPMessageContext soapMessageCtx = (SOAPMessageContext) msgContext;
SOAPMessage soapMessage = soapMessageCtx.getMessage();
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
try {
soapMessage.writeTo(outputStream);
byte[] array = outputStream.toByteArray();
ByteArrayInputStream inputStream = new ByteArrayInputStream(array);
System.out.println("SOAP response message:\n");
print(inputStream, System.out);
} catch (SOAPException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
}
谢谢