我正试图使用javax.xml.ws.Provider开发一个带有CXF的远程调度器，如下所述：http://cxf.apache.org/docs/jax-ws-dispatch-api.html.我有一个配置了WSAddressing、SOAP12_HTTP_BINDING和以下WSS4J配置的CXF客户端：
客户端WSS4J IN拦截器：
inProps.put("action", "Timestamp Signature Encrypt");
inProps.put("passwordType", "PasswordText");
...
客户端WSS4J OUT拦截器：
protected static final String WSU_NS =
"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd";
protected static final String SOAP12_NS = "http://www.w3.org/2003/05/soap-envelope";
protected static final String SOAP11_NS = "http://schemas.xmlsoap.org/soap/envelope";
protected static final String WSA_NS = "http://www.w3.org/2005/08/addressing";
protected static final String WSSE_NS="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd";
String userForPswCallback = ...
Map<String, Object> props = new HashMap<String, Object>();
props.put("action", "UsernameToken Timestamp Signature Encrypt");
props.put("passwordType", "PasswordText");
...
props.put("encryptionParts", "{Content}{"+SOAP12_NS+"}Body;{Element}{"+WSSE_NS+"}UsernameToken");
props.put("signatureKeyIdentifier", "DirectReference");
props.put("signatureParts", "{Element}{"+SOAP12_NS+"}Body;" +
"{Element}{"+WSSE_NS+"}UsernameToken;" +
"{Element}{"+WSA_NS+"}Action;" +
"{Element}{"+WSA_NS+"}MessageID;" +
"{Element}{"+WSA_NS+"}To;" +
"{Element}{"+WSA_NS+"}ReplyTo");
在调度器端，我发布以下调度器服务：
@WebServiceProvider( targetNamespace = JettyConstants.PersistenceNameSpace,
serviceName=JettyConstants.PersistenceService,
portName=JettyConstants.PersistencePort)
@ServiceMode (Service.Mode.MESSAGE)
public class PersistenceProvider implements Provider<Source> {
private static final Logger log = Logger.getLogger(PersistenceProvider.class);
private TransformerFactory transformerFactory;
public PersistenceProvider() {
// Complete
}
private static final DocumentBuilderFactory BUILDER_FACTORY = DocumentBuilderFactory.newInstance();
static {
BUILDER_FACTORY.setNamespaceAware(true);
}
public Source invoke(Source request) {
try {
DOMSource sourceInvoke = null;
//get userName and userPassword from the interceptor chain (added in a custom interceptor)
String userName = (String)(PhaseInterceptorChain.getCurrentMessage().get("product.username"));
String userPassword = (String)(PhaseInterceptorChain.getCurrentMessage().get("product.password"));
//insert extracted into a org.w3c.dom.Document
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder builder = null;
org.w3c.dom.Document doc = null;
try {
builder = dbf.newDocumentBuilder();
InputStream is = convertMessageToInputStream(request);
doc = builder.parse(is);
} catch (Exception e) {
e.printStackTrace();
return null;
}
NodeList node = doc.getElementsByTagNameNS("*","Security");
node.item(0).getParentNode().removeChild(node.item(0));
// Add extra header to the envelop...
...
sourceInvoke = new DOMSource(doc);
// 1. Resolve target service based on wsContext
QName targetService = new QName(JettyConstants.PersistenceNameSpace,JettyConstants.PersistenceService);
QName targetPort = new QName(JettyConstants.PersistenceNameSpace,JettyConstants.PersistencePort);
String targetEndpoint = DispatchStarter.getNewVelocityDestination(false)+"/Persistence";
/* ****************************************** INVOKE THE REMOTE SERVER *************************************** */
// 2. Create dispatcher
Dispatch<Source> dispatcher = createDispatcher(targetService, targetPort, targetEndpoint);
// 3. Invoke target service
Source response = dispatcher.invoke(sourceInvoke);
/* *********************************************************************************************************** */
// 4. Return service response to consumer
DOMSource domS = toDOMSourceFromSAX((SAXSource)response);
//get the doc to modify it:
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder builder = null;
org.w3c.dom.Document doc = null;
builder = dbf.newDocumentBuilder();
doc = (org.w3c.dom.Document) domS.getNode();
// 4.1. Take just the body content out of the response received from the server:
NodeList body_el = doc.getElementsByTagNameNS("*", "Body").item(0).getChildNodes();
DocumentBuilderFactory docf = DocumentBuilderFactory.newInstance();
Document docnew = docf.newDocumentBuilder().newDocument();
Node newNode = docnew.createElementNS(body_el.item(0).getNamespaceURI(), body_el.item(0).getLocalName());
Node nodeComplete = docnew.adoptNode(body_el.item(0).cloneNode(true));
// 4.2. Create the SAXSource to send back to the client through CXF stack
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
Source xmlSource = new DOMSource(nodeComplete);
Result outputTarget = new StreamResult(outputStream);
TransformerFactory.newInstance().newTransformer().transform(xmlSource, outputTarget);
InputStream is = new ByteArrayInputStream(outputStream.toByteArray());
InputSource inputSource = new InputSource(is);
SAXSource finalRes = new SAXSource(inputSource);
return finalRes;
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
private Dispatch<Source> createDispatcher(QName serviceName, QName portName, String targetEndpoint) {
Service service = Service.create(serviceName);
String actualBinding = SOAPBinding.SOAP12HTTP_BINDING;
service.addPort(portName, actualBinding, targetEndpoint);
Dispatch<Source> dispatcher = service.createDispatch(portName, Source.class,
Service.Mode.MESSAGE);
return dispatcher;
}
}
PersistenceProvider(调度器)与以下WSS4JInterceptors 一起发布
Dispatcher WSS4J Dispatcher IN interceptors:
Map<String, Object> inProps = new HashMap<String, Object>();
inProps.put(WSHandlerConstants.ACTION, "UsernameToken Timestamp Signature Encrypt");
inProps.put("passwordType", "PasswordText");
...
Dispatcher WSS4J Dispatcher OUT interceptors:
protected static final String WSU_NS =
"http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd";
protected static final String SOAP_NS = "http://www.w3.org/2003/05/soap-envelope";
protected static final String WSA_NS = "http://www.w3.org/2005/08/addressing";
outProps.put(WSHandlerConstants.ACTION, "Timestamp Signature Encrypt");
outProps.put("passwordType", "PasswordText");
...
outProps.put("encryptionParts", "{Content}{"+SOAP_NS+"}Body");
...
outProps.put("signatureParts", "{Element}{" + WSU_NS + "}Timestamp;" +
"{Element}{"+SOAP_NS+"}Body;" +
"{Element}{"+WSA_NS+"}Action;" +
"{Element}{"+WSA_NS+"}MessageID;" +
"{Element}{"+WSA_NS+"}To;" +
"{Element}{"+WSA_NS+"}RelatesTo");
并且启用了WSAddressingFeature。我可以将请求从客户端重定向到远程服务器，然后从调度器端的远程服务器获得响应。不幸的是，当我试图将答案发送回我的客户端时(即在PersistenceProvider#invoke方法的返回语句之后)，我得到了以下异常：
{http://dbproxyservice/}PersistenceService#{http://dispatch/}invoke has thrown exception, unwinding now
org.apache.cxf.binding.soap.SoapFault: Error creating SOAPMessage
at org.apache.cxf.jaxws.interceptors.MessageModeOutInterceptor$MessageModeOutInterceptorInternal.handleMessage(MessageModeOutInterceptor.java:210)
at org.apache.cxf.jaxws.interceptors.MessageModeOutInterceptor$MessageModeOutInterceptorInternal.handleMessage(MessageModeOutInterceptor.java:182)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:77)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:123)
at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.serviceRequest(JettyHTTPDestination.java:323)
at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:289)
at org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:72)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:942)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:878)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:936)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:893)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:52)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
at java.lang.Thread.run(Thread.java:662)
Caused by: com.ctc.wstx.exc.WstxEOFException: Unexpected EOF in prolog
at [row,col {unknown-source}]: [1,0]
at com.ctc.wstx.sr.StreamScanner.throwUnexpectedEOF(StreamScanner.java:677)
at com.ctc.wstx.sr.BasicStreamReader.handleEOF(BasicStreamReader.java:2104)
at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2010)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1102)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:551)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:513)
at org.apache.cxf.staxutils.StaxUtils.copy(StaxUtils.java:467)
at org.apache.cxf.jaxws.interceptors.MessageModeOutInterceptor$MessageModeOutInterceptorInternal.handleMessage(MessageModeOutInterceptor.java:204)
... 24 more
[10Dec 18:59:51,881] (doLog@372) WARN PhaseInterceptorChain - Interceptor for {http://dbproxyservice/}PersistenceService#{http://dispatch/}invoke has thrown exception, unwinding now
java.lang.NullPointerException
at org.apache.cxf.ws.addressing.ContextUtils.hasEmptyAction(ContextUtils.java:358)
at org.apache.cxf.ws.addressing.MAPAggregator.assembleGeneric(MAPAggregator.java:686)
at org.apache.cxf.ws.addressing.MAPAggregator.aggregate(MAPAggregator.java:660)
at org.apache.cxf.ws.addressing.MAPAggregator.mediate(MAPAggregator.java:515)
at org.apache.cxf.ws.addressing.MAPAggregator.handleMessage(MAPAggregator.java:228)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:107)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:323)
at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:77)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:263)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:123)
at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.serviceRequest(JettyHTTPDestination.java:323)
at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:289)
at org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:72)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:942)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:878)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
at org.eclipse.jetty.server.Server.handle(Server.java:349)
at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:441)
at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:936)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:893)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:52)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
at java.lang.Thread.run(Thread.java:662)
你有什么提示可以避免这个错误吗？特别是，我要做什么才能通过CXF堆栈将调用响应发送回客户端？在上面的PersistenceProvider#invoke的第4点，去掉从远程服务器获得的所有头是否正确？我这么做是因为我认为dispatcher的CXF out拦截器会在Body周围从头开始构建信封。这是正确的吗？
谢谢！
明白了！诀窍是将PersistenceProvider(dispatcher)中invoke方法返回的javax.xml.transform.Source转换为DOMSource。这允许CXF正确地填充传出的soap信封体。
问题解决了。完整的故事在这里！