I am currently working on a project that uses JAX-WS webservices in Java.
The global topic is this : the user creates locally an object, let's say an Agent. He calls a first webservice and passes its Agent to the webservice. The webservice treats the Agent (modifies its properties : e.g. lifepoints), and passes it to another webservice. This call is made from the first webservice, so the user has nothing to do in the process.
After a chain of several webservices, the user retrieves the Agent that has been modified.
The aim of my project is to design 2 parts:
a framework that specifies the behaviour previously described : webservices, Agents and the process of migration
a demo application using my framework. The main difference is the addition of a GUI and a new class Avatar, that extends Agent. So the migration process is still being done "by the framework", with Agent objects.
The following code shows a simple example of how I call my webservice, host my Avatar, then retrieves the agent from the service :
// connection to the server
URL endpoint= new URL("http://SERVER/tomcat/KiwiBidonDynamique/ServiceWebBidonDeDadou?wsdl");
QName serviceName=new QName("http://avatar/","ServeurKiwiBidonService");
Service service = Service.create(endpoint, serviceName);
WebService port = service.getPort(WebService.class);
Avatar myAvatar = new Avatar(1, "Jack the Ripper");
port.hostAgent(myAvatar);
// some process on the service...
Avatar myAvatarTransformed = (Avatar) port.getAgent("AgentNumberOne");
When I do that, I get an exception on the final line :
Exception in thread "main" java.lang.ClassCastException: agent.Agent cannot be cast to avatar.Avatar
After a lot of log reading, I guess the reason is the way the webservice works. When being called, my Avatar given in parameter is marshalled in my JVM then unmarshalled on the service, but the service only constructs an Agent when it unmarshalles. Doing so, it truncates the data specific to the Avatar. Then when I try to retrieve my Agent from the service, it cannot be cast to an Avatar.
Is there a way to keep the Avatar information while processing as an Agent on the service ?
Can I write my own marshalling/unmarshalling somehow ?
Thanks a lot.
If your webservice has Agent element defined as incoming data, then no it is not possible to unmarshall it into an inherited class. I guess it would be possible to write your own marshaller but it is not as easy as it sounds (I would advise against it). Either write a separate WS for each class (messy) or make the incoming data have an element that can store additional structures, like type:any (also messy). The truth is WS are not exactly OO.
Related
I have created a Talend job and deployed it as a Axis Web Service.
I am calling this Web Service from my Web Application.
My application and web service are deployed over Tomcat server.
For Valid Inputs:
Runs Perfectly.
For Invalid Inputs:
It throws Error/exceptions in Tomcat Server.
I want this Errors into my application. I didn't get any error related information in the Response sent by web service.
Error message on Tomcat Server
XML response of Web service
If I understand your question you are not so much asking how to fix this error, but how to get feedback about your error. There are several ways but here is a simple method.
Add a tLogCatcher to your job, and point its output to a tSendMail component. You can run the output thru a tMap do things like adding HTML formatting. You can also create a joblet with these two components and use the joblet in every job so you do not have to recreate it every time.
The diagram below shows a real simple case where I add tLogCatcher and tSendMail directly to the job. When there is an error it will send me an email with the details. You can use any of the columns in row11, I am only using job and message in my example.
This error : For input string "fabrik"
is generated by the tFileInputExcel component when encountering a non valid field (expected : integer ; given : string). You can't directly catch this error with the tFileInputExcel component (it's just printed out on the console).
However, you can use a tSchemaComplianceCheck component after your tFileInputExcelComponent : it will throw an error if a data is not valid for your schema. This component has a reject link to catch the error.
tFileInputExcel->tSchemaComplianceCheck->tMap->tMSOutput
If you use tLogCatcher component to catch the error then, at the end of the flow, you can add a tBufferOutput component. Keep the fields with the information you want for.
component configuration
The result will be like this (note that they are shown in the same order):
result
I am currently working on a Service Fabric project, where in one of our reliable actors we make calls to a SOAP service. For these calls we read a couple of parameters from the Actor's Settings.xml and also - the SOAP endpoint address and binding information from the App.config file (actually the latter is done implicitly by the generated service proxy class for the SOAP service).
Now I am trying to get the unit testing work with xUnit + ServiceFabric.Mocks. To test an Actor specific method I go through:
1) Creating a "MockCodePackageActivationContext"
2) Creating a "StatefulServiceContext" using the instance of the activation context in step 1.
3) Instantiate the Actor with the code below
MyActor target = new MyActor(
new ActorService(
context: serviceContext,
actorTypeInfo: ActorTypeInformation.Get(typeof(MyActor)),
stateManagerFactory: (actorBase, stateProvider) => new MockActorStateManager()
),
new ActorId(Guid.NewGuid())
);
4) I call target.MyMethod() which breaks due to inability to read config info either from the Settings.xml or the App.config file
I made a test where target.MyMethod_Test() does not read anything from config and it was successful.
Anyone who stumbled upon similar thing? How did you solve it?
You could create a separate class that provides configuration data. Create an interface for it and then inject it in the Actor constructor, in Program Main. (Passing the service context into the new class for example.)
Also create a mock implementation of the interface and pass that one to the Actor for testing purposes.
does anyone know a working example that bridges ActiveMQ to CXF? I saw many examples that connect a WebService to a message queue, but I need it the other way round. Messages from a JMS queue shall be forwarded to a web service and the result returned to the caller.
My first approach is only working for web services that expose one single method:
from("activemq:wsa").to("cxf:bean:webServiceA");
Status msg = producerTemplate.requestBody("activemq:wsa", params, Status.class);
But for web services that have more than one method, a similar call results in a ExchangeTimedOutException.
Map<String, Object> header = new HashMap<String, Object>();
header.put(CxfConstants.OPERATION_NAME, "doSomething");
header.put(CxfConstants.OPERATION_NAMESPACE, "http://.../");
Status msg = producerTemplate.requestBodyAndHeaders("activemq:wsb", params, header, Status.class);
Nevertheless, I can see that the request is forward to the web service and the correct answer is returned. But unfortunately then it gets lost on its way back.
Any hints or links to external resources are appreciated.
Many regards,
Jakob
ActiveMQ and JMS calls are one way default, you may want to specify it to be synchronous.
http://camel.apache.org/jms.html#JMS-RequestreplyoverJMS
Other than that, it should be no different to use ActiveMQ as a starter for CXF producers.
A suggestion is to download the Camel source and look into this folder:
\components\camel-cxf\src\test\java\org\apache\camel\component\cxf
(or by Web: http://svn.apache.org/viewvc/camel/trunk/components/camel-cxf/src/test/)
You will have a huge amount of CXF producer test cases, to look at as reference material.
The problem occurs when a web service returns objects of classes that don't implement the serializable interface, even if these classes are serializable.
Implementing the serializable interface solves the problem.
Is there a way that I can retrieve the timestamp of a web service call? I'm trying to get the time of the server hosting the web service.
Easiest thing to do is to just log them in the server implementation of your service contract, you can use PostSharp to make some attributes to take of this aspect.
For instance, you can write a Trace attribute which simply logs a debug message when a method is invoke. Here's one I wrote a while back which tracks how long a method takes and log a warning message if it takes longer than a set threshold:
http://theburningmonk.com/2010/03/aop-method-execution-time-watcher-with-postsharp/
I came across some 'trace' attribute example before, if you want I can look for it for ya.
I currently have a BizTalk 2006 (r1) application which receives XML from a SQL stored proc using the SQL adapter. It maps this to another schema before sending out to a 3rd party. The send port uses a custom pipeline component which converts the XML to a flat file - in the format required by the customer. I don't use any orchestration, this is a pure message based solution.
This all works great when sending via FTP. However, the 3rd party have now requested that I push the message to a web service they hosy. I haven't received the WSDL yet but can assume that the method I'll be calling simply receives a string as a single parameter.
Could anyone advise on the best way to approach this please? I have created a simple web service stub. I then followed Recipe 6-11 from the excellent BizTalk 2006 Recipes book, generating a proxy class using wsdl.exe which I then reference from the "web service" tab of the SOAP send port. However, when processing an order I get the following message in the event log:
Could not load type 'WSProxy' from assembly 'Direct.IS.Payment.Components, Version=3.1.145.0, Culture=neutral, PublicKeyToken=dc03da781bea1472'.".
The type must derive from System.Web.Services.Protocols.SoapHttpClientProtocol.
The type must have the attribute System.Web.Services.WebServiceBindingAttribute. ".
Next step will be for me to play around with the proxy so that it address the derive and attribute issues mentioned in the even log message. However, I can't help but think that there must be an easier way?
Thanks
The custom pipeline component you have created is not producing a message that is suitable for SOAP transmission. Not knowing what the end customer is going to do, I'd hold off on trying ot make SOAP work. In the mean time, just spin up an ASPX page with the following code:
private void Page_Load(object sender, EventArgs e)
{
StreamReader reader = new StreamReader(page.Request.InputStream);
String xmlData = reader.ReadToEnd();
}
Add code to write XMLData to a DB or to a text file or something to see what it is. This is very crude and does not send a response code. It should get you started.