我有一个纯粹通过在 TomEE 7 环境中运行的注释配置的 JAX-WS Web 服务端点。基本上,被调用的方法必须返回一个List<String>
包含在图形数据结构中的所有节点名称。此类请求的响应可以包含更多感谢 50k 元素。
使用 CXF 2.6.x 这很好。但是,当我在 CXF 3.x(捆绑在 TomEE 7.x 中)下调用 WS 方法时,服务器端会抛出以下异常:
org.apache.cxf.interceptor.Fault: Unmarshalling Error: Maximum Number of Child Elements limit (50000) Exceeded
at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:906)
at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:712)
at org.apache.cxf.jaxb.io.DataReaderImpl.read(DataReaderImpl.java:179)
at org.apache.cxf.wsdl.interceptors.DocLiteralInInterceptor.handleMessage(DocLiteralInInterceptor.java:109)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
at org.apache.cxf.endpoint.ClientImpl.onMessage(ClientImpl.java:801)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:1680)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponse(HTTPConduit.java:1559)
at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.close(HTTPConduit.java:1356)
at org.apache.cxf.transport.AbstractConduit.close(AbstractConduit.java:56)
at org.apache.cxf.transport.http.HTTPConduit.close(HTTPConduit.java:653)
at org.apache.cxf.interceptor.MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(MessageSenderInterceptor.java:62)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
at org.apache.cxf.endpoint.ClientImpl.doInvoke(ClientImpl.java:514)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:423)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:324)
at org.apache.cxf.endpoint.ClientImpl.invoke(ClientImpl.java:277)
at org.apache.cxf.frontend.ClientProxy.invokeSync(ClientProxy.java:96)
at org.apache.cxf.jaxws.JaxWsClientProxy.invoke(JaxWsClientProxy.java:139)
at com.sun.proxy.$Proxy51.getAllNodeNames(Unknown Source)
Caused by: javax.xml.bind.UnmarshalException
- with linked exception:
[javax.xml.stream.XMLStreamException: Maximum Number of Child Elements limit (50000) Exceeded]
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.handleStreamException(UnmarshallerImpl.java:485)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:417)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:394)
at org.apache.cxf.jaxb.JAXBEncoderDecoder.doUnmarshal(JAXBEncoderDecoder.java:855)
at org.apache.cxf.jaxb.JAXBEncoderDecoder.access$100(JAXBEncoderDecoder.java:102)
at org.apache.cxf.jaxb.JAXBEncoderDecoder$2.run(JAXBEncoderDecoder.java:894)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.cxf.jaxb.JAXBEncoderDecoder.unmarshall(JAXBEncoderDecoder.java:892)
... 21 more
Caused by: javax.xml.stream.XMLStreamException: Maximum Number of Child Elements limit (50000) Exceeded
at com.ctc.wstx.sr.InputElementStack.push(InputElementStack.java:340)
at com.ctc.wstx.sr.BasicStreamReader.handleStartElem(BasicStreamReader.java:2951)
at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2839)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1073)
at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:196)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:415)
... 27 more
Error: Maximum Number of Child Elements limit (50000) Exceeded
到目前为止,我已经阅读了有关此问题的官方CXF 文档,查看了TomEE网站上的 HowTo 并阅读了论坛中许多相关但较旧的帖子。
openejb-jar.xml
我尝试通过在 web 服务的文件夹中设置属性 - 正如 TomEE 文档所建议的那样WEB-INF
:
<?xml version="1.0" encoding="UTF-8"?>
<openejb-jar>
<ejb-deployment ejb-name="MyWebService">
<properties>
org.apache.cxf.stax.maxChildElements = 100000
</properties>
</ejb-deployment>
</openejb-jar>
我还尝试使用更短的属性cxf.stax.maxChildElements
来检查这是否会被接受,但没有成功。
为了测试/调试,我通过tomee-maven-plugin启动 TomEE 实例,因此,我尝试将maxChildElement
属性设置为环境属性,如下所示:
<plugin>
<groupId>org.apache.tomee.maven</groupId>
<artifactId>tomee-maven-plugin</artifactId>
<version>${tomee.plugin.version}</version>
<configuration>
<tomeeVersion>${tomee.version}</tomeeVersion>
<tomeeClassifier>plus</tomeeClassifier>
<debug>false</debug>
<tomeeHttpPort>8181</tomeeHttpPort>
<debugPort>5005</debugPort>
<args>-Dfoo=bar</args>
<skipCurrentProject>true</skipCurrentProject>
<webapps>
<webapp>my.ws:${webservice.artifact.name}:${webservice.artifact.version}?name=ws-endpoint</webapp>
</webapps>
<libs>
<!-- Third party libraries needed in the global lib folder of TomEE -->
<lib>log4j:log4j:${log4j.version}</lib>
</libs>
<systemVariables>
<!--
special property needed to allow for more childElements in StAX Parser
-->
<org.apache.cxf.stax.maxChildElement>100000</org.apache.cxf.stax.maxChildElement>
</systemVariables>
</configuration>
</plugin>
遗憾的是,它对 CXF/StAX (Woodstox) 的运行时配置没有影响。
问题
我们如何在 TomEE 启动时maxChildElements
通过配置openejb-jar.xml
或作为外部属性覆盖该属性。