SOAP消息不得包含文档类型声明(DTD)

我正在尝试理解ws-security签名和加密.我遵循了这个指南.如前所述,我已经安装了rampart,已*.aar成功创建相关文件并将其部署在tomcat servlet引擎中,将org.bouncycastle.jce.provider.BouncyCastleProviderBouncy Castle安全提供程序(示例代码中使用的公钥加密功能所必需)添加到JVM安全配置(lib/security/java.security文件),将Bouncy Castle JAR添加到Axis2安装的lib目录和Axis2服务器应用程序的WEB-INF/lib目录中.(这是运行给定示例的设置)但是在运行所描述的示例时,我收到以下错误

 [java] Connecting to http://localhost:8080/axis2/services/library-signencr
 [java] Exception in thread "main" org.apache.axis2.AxisFault: SOAP message MUST NOT contain a Document Type Declaration(DTD)
 [java]     at org.apache.axis2.AxisFault.makeFault(AxisFault.java:430)
 [java]     at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:123)
 [java]     at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:67)
 [java]     at org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:354)
 [java]     at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:421)
 [java]     at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:229)
 [java]     at org.apache.axis2.client.OperationClient.execute(OperationClient.java:165)
 [java]     at com.sosnoski.ws.library.adb.LibrarySignencrStub.getBook(LibrarySignencrStub.java:205)
 [java]     at com.sosnoski.ws.library.adb.WebServiceClient.main(WebServiceClient.java:83)
 [java] Caused by: org.apache.axiom.om.OMException: SOAP message MUST NOT contain a Document Type Declaration(DTD)
 [java]     at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.createDTD(StAXSOAPModelBuilder.java:455)
 [java]     at org.apache.axiom.om.impl.builder.StAXOMBuilder.next(StAXOMBuilder.java:282)
 [java]     at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.getSOAPEnvelope(StAXSOAPModelBuilder.java:198)
 [java]     at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.(StAXSOAPModelBuilder.java:154)
 [java]     at org.apache.axiom.soap.impl.builder.StAXSOAPModelBuilder.(StAXSOAPModelBuilder.java:140)
 [java]     at org.apache.axis2.builder.BuilderUtil.getSOAPBuilder(BuilderUtil.java:686)
 [java]     at org.apache.axis2.transport.TransportUtils.createDocumentElement(TransportUtils.java:197)
 [java]     at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:145)
 [java]     at org.apache.axis2.transport.TransportUtils.createSOAPMessage(TransportUtils.java:108)
 [java]     ... 7 more
 [java] Java Result: 1

我该如何解决这个问题？