Tracing XML request responses with JAX-WS

Question

Is there an easy way  aka  not using a proxy  to get access to the raw request response XML for a webservice published with JAX-WS reference implementation  the one included in JDK 1 5 and better    Being able to do that via code is what I need to do  Just having it logged to a file by clever logging configurations would be nice but enough   I know that other more complex and complete frameworks exist that might do that  but I would like to keep it as simple as possible and axis  cxf  etc all add considerable overhead that I want to avoid   Thanks

User · Answer

One way to do is not using your code but use network packet sniffers like Etheral or WireShark which can capture the HTTP packet with the XML message as payload to it and you can keep logging them to a file or so.

But more sophisticated approach is to write your own message handlers. You can have a look at it here.

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Before starting tomcat  set JAVA OPTS as below in Linux envs  Then start Tomcat  You will see the request and response in the catalina out file   export JAVA OPTS   JAVA OPTS -Dcom sun xml ws transport http client HttpTransportPipe dump true

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There are a couple of answers using SoapHandlers in this thread  You should know that SoapHandlers modify the message if writeTo out  is called   Calling SOAPMessage s writeTo out  method automatically calls saveChanges   method also  As a result all attached MTOM XOP binary data in a message is lost   I am not sure why this is happening  but it seems to be a documented feature      In addition  this method marks the point at which the data from all constituent AttachmentPart objects are pulled into the message    https   docs oracle com javase 7 docs api javax xml soap SOAPMessage html saveChanges

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with logback xml configuration files  you can do      lt logger name  com sun xml internal ws transport http client HttpTransportPipe  level  trace  additivity  false  gt       lt appender-ref ref  STDOUT   gt   lt  logger gt    That will log the request and the response like this  depending on your configuration for the log output     09 50 23 266  qtp1068445309-21  DEBUG c s x i w t h c HttpTransportPipe - --- HTTP request - http   xyz 8081 xyz svc --- Accept  application soap xml  multipart related Content-Type  application soap xml  charset utf-8 action  http   xyz Web Services IServiceBase GetAccessTicket  User-Agent  JAX-WS RI 2 2 9-b130926 1035 svn-revision 5f6196f2b90e9460065a4c2f4e30e065b245e51e  lt  xml version  1 0    gt  lt S Envelope xmlns S  http   www w3 org 2003 05 soap-envelope  gt  CONTENT REMOVED  lt  S Envelope gt --------------------  09 50 23 312  qtp1068445309-21  DEBUG c s x i w t h c HttpTransportPipe - --- HTTP response - http   xyz 8081 xyz svc - 200 --- null  HTTP 1 1 200 OK Content-Length  792 Content-Type  application soap xml  charset utf-8 Date  Tue  12 Feb 2019 14 50 23 GMT Server  Microsoft-IIS 10 0 X-Powered-By  ASP NET  lt s Envelope xmlns s  http   www w3 org 2003 05 soap-envelope  xmlns a  http   www w3 org 2005 08 addressing  gt  CONTENT REMOVED  lt  s Envelope gt --------------------

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The answers listed here which guide you to use SOAPHandler are fully correct  The benefit of that approach is that it will work with any JAX-WS implementation  as SOAPHandler is part of the JAX-WS specification  However  the problem with SOAPHandler is that it implicitly attempts to represent the whole XML message in memory  This can lead to huge memory usage  Various implementations of JAX-WS have added their own workarounds for this  If you work with large requests or large responses  then you need to look into one of the proprietary approaches   Since you ask about  the one included in JDK 1 5 or better  I ll answer with respect to what is formally known as JAX-WS RI  aka Metro  which is what is included with the JDK   JAX-WS RI has a specific solution for this which is very efficient in terms of memory usage   See https   javaee github io metro doc user-guide ch02 html efficient-handlers-in-jax-ws-ri  Unfortunately that link is now broken but you can find it on WayBack Machine  I ll give the highlights below   The Metro folks back in 2007 introduced an additional handler type  MessageHandler lt MessageHandlerContext gt   which is proprietary to Metro  It is far more efficient than SOAPHandler lt SOAPMessageContext gt  as it doesn t try to do in-memory DOM representation   Here s the crucial text from the original blog article      MessageHandler       Utilizing the extensible Handler framework provided by JAX-WS   Specification and the better Message abstraction in RI  we introduced   a new handler called MessageHandler to extend your Web Service   applications  MessageHandler is similar to SOAPHandler  except that   implementations of it gets access to MessageHandlerContext  an   extension of MessageContext    Through MessageHandlerContext one can   access the Message and process it using the Message API  As I put in   the title of the blog  this handler lets you work on Message  which   provides efficient ways to access process the message not just a DOM   based message  The programming model of the handlers is same and the   Message handlers can be mixed with standard Logical and SOAP handlers    I have added a sample in JAX-WS RI 2 1 3 showing the use of   MessageHandler to log messages and here is a snippet from the sample    public class LoggingHandler implements MessageHandler lt MessageHandlerContext gt        public boolean handleMessage MessageHandlerContext mhc            Message m   mhc getMessage   copy            XMLStreamWriter writer   XMLStreamWriterFactory create System out           try               m writeTo writer             catch  XMLStreamException e                e printStackTrace                return false                    return true             public boolean handleFault MessageHandlerContext mhc                           return true             public void close MessageContext messageContext              public Set getHeaders             return null             end quote from 2007 blog post   Needless to say your custom Handler  LoggingHandler in the example  needs to be added to your Handler Chain to have any effect  This is the same as adding any other Handler  so you can look in the other answers on this page for how to do that   You can find a full example in the Metro GitHub repo

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Inject SOAPHandler to endpoint interface  we can trace the SOAP request and response  Implementing SOAPHandler with Programmatic   ServerImplService service   new ServerImplService    Server port   imgService getServerImplPort               for tracing xml inbound and outbound                                Binding binding     BindingProvider port  getBinding    List lt Handler gt  handlerChain   binding getHandlerChain    handlerChain add new SOAPLoggingHandler     binding setHandlerChain handlerChain     Declarative  by adding  HandlerChain file    handlers xml   annotation to your endpoint interface   handlers xml   lt  xml version  1 0  encoding  UTF-8   gt   lt handler-chains xmlns  http   java sun com xml ns javaee  gt       lt handler-chain gt           lt handler gt               lt handler-class gt SOAPLoggingHandler lt  handler-class gt           lt  handler gt       lt  handler-chain gt   lt  handler-chains gt    SOAPLoggingHandler java          This simple SOAPHandler will output the contents of incoming    and outgoing messages        public class SOAPLoggingHandler implements SOAPHandler lt SOAPMessageContext gt        public Set lt QName gt  getHeaders             return null             public boolean handleMessage SOAPMessageContext context            Boolean isRequest    Boolean  context get MessageContext MESSAGE OUTBOUND PROPERTY           if  isRequest                System out println  is Request              else               System out println  is Response                      SOAPMessage message   context getMessage            try               SOAPEnvelope envelope   message getSOAPPart   getEnvelope                SOAPHeader header   envelope getHeader                message writeTo System out             catch  SOAPException   IOException e                   TODO Auto-generated catch block             e printStackTrace                      return true             public boolean handleFault SOAPMessageContext smc            return true                nothing to clean up     public void close MessageContext messageContext

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If you happen to run a IBM Liberty app server  just add ibm-ws-bnd xml into WEB-INF directory    lt  xml version  1 0  encoding  UTF-8   gt   lt webservices-bnd     xmlns  http   websphere ibm com xml ns javaee      xmlns xsi  http   www w3 org 2001 XMLSchema-instance      xsi schemaLocation  http   websphere ibm com xml ns javaee http   websphere ibm com xml ns javaee ibm-ws-bnd 1 0 xsd      version  1 0  gt       lt webservice-endpoint-properties         enableLoggingInOutInterceptor  true    gt   lt  webservices-bnd gt

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Set the following system properties  this will enabled xml logging  You can set it in java or configuration file   static          System setProperty  com sun xml ws transport http client HttpTransportPipe dump    true            System setProperty  com sun xml ws transport http HttpAdapter dump    true            System setProperty  com sun xml internal ws transport http client HttpTransportPipe dump    true            System setProperty  com sun xml internal ws transport http HttpAdapter dump    true            System setProperty  com sun xml internal ws transport http HttpAdapter dumpTreshold    999999            console logs   INFO  Outbound Message --------------------------- ID  1 Address  http   localhost 7001 arm-war castService Encoding  UTF-8 Http-Method  POST Content-Type  text xml Headers   Accept        SOAPAction       Payload  xml -------------------------------------- INFO  Inbound Message ---------------------------- ID  1 Response-Code  200 Encoding  UTF-8 Content-Type  text xml  charset UTF-8 Headers   content-type  text xml  charset UTF-8   Date  Fri  20 Jan 2017 11 30 48 GMT   transfer-encoding  chunked   Payload  xml --------------------------------------

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I am posting a new answer  as I do not have enough reputation to comment on the one provided by Antonio  see  https   stackoverflow com a 1957777    In case you want the SOAP message to be printed in a file  e g  via Log4j   you may use   OutputStream os   new ByteArrayOutputStream    javax xml soap SOAPMessage soapMsg   context getMessage    soapMsg writeTo os   Logger LOG   Logger getLogger SOAPLoggingHandler class      Assuming SOAPLoggingHandler is the class name LOG info os toString       Please note that under certain circumstances  the method call writeTo   may not behave as expected  see  https   community oracle com thread 1123104 tstart 0 or https   www java net node 691073   therefore the following code will do the trick   javax xml soap SOAPMessage soapMsg   context getMessage    com sun xml ws api message Message msg   new com sun xml ws message saaj SAAJMessage soapMsg   com sun xml ws api message Packet packet   new com sun xml ws api message Packet msg   Logger LOG   Logger getLogger SOAPLoggingHandler class      Assuming SOAPLoggingHandler is the class name LOG info packet toString

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Actually  If you look into sources of HttpClientTransport you will notice that it is also writing messages into java util logging Logger  Which means you can see those messages in your logs too   For example if you are using Log4J2 all you need to do is the following    add JUL-Log4J2 bridge into your class path set TRACE level for com sun xml internal ws transport http client package  add -Djava util logging manager org apache logging log4j jul LogManager system property to your applicaton start command line   After these steps you start seeing SOAP messages in your logs

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I had been trying to find some framework library to log the web service soap request and response for a couple days  The code below fixed the issue for me   System setProperty  com sun xml ws transport http client HttpTransportPipe dump    true            System setProperty  com sun xml ws transport http HttpAdapter dump    true            System setProperty  com sun xml internal ws transport http client HttpTransportPipe dump    true            System setProperty  com sun xml internal ws transport http HttpAdapter dump    true

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There are various ways of doing this programmatically  as described in the other answers  but they re quite invasive mechanisms  However  if you know that you re using the JAX-WS RI  aka  Metro    then you can do this at the configuration level  See here for instructions on how to do this  No need to mess about with your application

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am I correct in understanding that you want to change access the raw XML message   If so  you  or since this is five years old  the next guy  might want to have a look at the Provider interface that is part of the JAXWS  The client counterpart is done using the  Dispatch  class  Anyway  you don t have to add handlers or interceptors  You still CAN  of course  The downside is this way  you are COMPLETELY responsible for building the SOAPMessage  but its easy  and if that s what you want like I did  this is perfect   Here is an example for the server side bit clumsy  it was just for experimenting -   WebServiceProvider portName  Provider1Port  serviceName  Provider1  targetNamespace    http   localhost 8123 SoapContext SoapPort1    ServiceMode value Service Mode MESSAGE  public class Provider1 implements Provider lt SOAPMessage gt      public Provider1              public SOAPMessage invoke SOAPMessage request      try            File log  new File   home aneeshb practiceinapachecxf log txt     creates file object         FileWriter fw new FileWriter log    creates filewriter and actually creates file on disk              fw write  Provider has been invoked                fw write  This is the request  request getSOAPBody   getTextContent            MessageFactory mf   MessageFactory newInstance          SOAPFactory sf   SOAPFactory newInstance           SOAPMessage response   mf createMessage          SOAPBody respBody   response getSOAPBody          Name bodyName   sf createName  Provider1Insertedmainbody          respBody addBodyElement bodyName         SOAPElement respContent   respBody addChildElement  provider1          respContent setValue  123 00          response saveChanges          fw write  This is the response  response getSOAPBody   getTextContent           fw close          return response  catch Exception e  return request              You publish it like you would an SEI   public class ServerJSFB        protected ServerJSFB   throws Exception           System out println  Starting Server            System out println  Starting SoapService1             Object implementor   new Provider1     create implementor         String address    http   localhost 8123 SoapContext SoapPort1            JaxWsServerFactoryBean svrFactory   new JaxWsServerFactoryBean     create serverfactorybean          svrFactory setAddress address           svrFactory setServiceBean implementor            svrFactory create     create the server  equivalent to publishing the endpoint         System out println  Starting SoapService1         public static void main String args    throws Exception       new ServerJSFB        System out println  Server ready            Thread sleep 10   60   1000       System out println  Server exiting        System exit 0         Or you can use an Endpoint class for it  Hope that has been helpful   And oh  if you want you needn t deal with headers and stuff  if you change the service mode to PAYLOAD You ll only get the Soap Body

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Here is the solution in raw code  put together thanks to stjohnroe and Shamik    Endpoint ep   Endpoint create new WebserviceImpl     List lt Handler gt  handlerChain   ep getBinding   getHandlerChain    handlerChain add new SOAPLoggingHandler     ep getBinding   setHandlerChain handlerChain   ep publish publishURL     Where SOAPLoggingHandler is  ripped from linked examples    package com myfirm util logging ws   import java io PrintStream  import java util Map  import java util Set   import javax xml namespace QName  import javax xml soap SOAPMessage  import javax xml ws handler MessageContext  import javax xml ws handler soap SOAPHandler  import javax xml ws handler soap SOAPMessageContext         This simple SOAPHandler will output the contents of incoming    and outgoing messages      public class SOAPLoggingHandler implements SOAPHandler lt SOAPMessageContext gt            change this to redirect output if desired     private static PrintStream out   System out       public Set lt QName gt  getHeaders             return null             public boolean handleMessage SOAPMessageContext smc            logToSystemOut smc           return true             public boolean handleFault SOAPMessageContext smc            logToSystemOut smc           return true                nothing to clean up     public void close MessageContext messageContext                         Check the MESSAGE OUTBOUND PROPERTY in the context        to see if this is an outgoing or incoming message         Write a brief message to the print stream and        output the message  The writeTo   method can throw        SOAPException or IOException             private void logToSystemOut SOAPMessageContext smc            Boolean outboundProperty    Boolean              smc get  MessageContext MESSAGE OUTBOUND PROPERTY            if  outboundProperty booleanValue                  out println   nOutbound message               else               out println   nInbound message                        SOAPMessage message   smc getMessage            try               message writeTo out               out println           just to add a newline           catch  Exception e                out println  Exception in handler      e

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In runtime you could simply execute  com sun xml internal ws transport http client HttpTransportPipe dump   true   as dump is a public var defined in the class as follows  public static boolean dump

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This solution provides a way programatically add a handler to the web service clien w o the XML config     See full doc here  http   docs oracle com cd E17904 01  web 1111 e13734 handlers htm i222476     Create new class that implements SOAPHandler  public class LogMessageHandler implements SOAPHandler lt SOAPMessageContext gt      Override public Set lt QName gt  getHeaders         return Collections EMPTY SET      Override public boolean handleMessage SOAPMessageContext context        SOAPMessage msg   context getMessage      Line 1     try           msg writeTo System out      Line 3       catch  Exception ex            Logger getLogger LogMessageHandler class getName    log Level SEVERE  null  ex              return true      Override public boolean handleFault SOAPMessageContext context        return true      Override public void close MessageContext context             Programatically add your LogMessageHandler     com csd Service service   null      URL url   new URL  https   service demo com ResService svc wsdl         service   new com csd Service url        com csd IService port   service getBasicHttpBindingIService        BindingProvider bindingProvider    BindingProvider port      Binding binding   bindingProvider getBinding        List lt Handler gt  handlerChain   binding getHandlerChain        handlerChain add new LogMessageHandler         binding setHandlerChain handlerChain

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You could try to put a ServletFilter in front of the webservice and inspect request and response going to   returned from the service   Although you specifically did not ask for a proxy  sometimes I find tcptrace is enough to see what goes on on a connection  It s a simple tool  no install  it does show the data streams and can write to file too

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Following options enable logging of all communication to the console  technically  you only need one of these  but that depends on the libraries you use  so setting all four is safer option   You can set it in the code like in example  or as command line parameter using -D or as environment variable as Upendra wrote   System setProperty  com sun xml ws transport http client HttpTransportPipe dump    true    System setProperty  com sun xml internal ws transport http client HttpTransportPipe dump    true    System setProperty  com sun xml ws transport http HttpAdapter dump    true    System setProperty  com sun xml internal ws transport http HttpAdapter dump    true    System setProperty  com sun xml internal ws transport http HttpAdapter dumpTreshold    999999      See question Tracing XML request responses with JAX-WS when error occurs for details

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You need to implement a javax xml ws handler LogicalHandler  this handler then needs to be referenced in a handler configuration file  which in turn is referenced by an  HandlerChain annotation in your service endpoint  interface or implementation   You can then either output the message via system out or a logger in your processMessage implementation    See   http   publib boulder ibm com infocenter wasinfo v7r0 index jsp topic  com ibm websphere express doc info exp ae twbs jaxwshandler html  http   java sun com mailers techtips enterprise 2006 TechTips June06 html

[java] Tracing XML request/responses with JAX-WS

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