I made a web service endpoint and exposed a method now i wanna add more parameter to my method
so each time i change in my method i have to regenerate my client. Is there any way so that i
dont have to generate my client again and again.
No, there is no way. If you change the method then the WSDL file is changed also. Web services communicates through SOAP between client and server. When you deploy your web service application and it has been changed, so how then client supposed to know if there is a new method or a new parameters added if the classes was generated from the old WSDL file. Client will send a SOAP request according to the old WSDL and the server won't be able to understand the SOAP message received from the client if there was any changes made to WSDL part related to the received message.
You could design a better webservice/endpoint that accepts a standalone xml document as argument so that the operation signature stays the same, even when you add more parameters.
More generally, it's bad form for a web service to expose it operations as literal method signatures.
Related
In my project I need to write a web service which will receive Collection<?> as a parameter.. I am using apache CXF.. After I have written the service method I am unable to test it using SOAP UI (It is not generating any request).. My question is - Is it possible to receive Collection<?> over web service? I need to receive Collection of any object type.. Please help..
You need to work directly with SOAP messages.
I have seen some of the SOAP- Example- Mediators. I have not found a transformation based on the endpoint-WSDL.
I want to send some nested named array in json or POX and that data should go into a complete namespaced headered (username, password) SOAP-Request based on the names.
All the examples I have found had either a very simple wsdl or the namespaces were static in the XSL-Transformation.
It should be possible to do that, as I see in for example php-NuSOAP. You feed it with a wsdl-endpoint, the operation you want to execute and the parameter-array, and it calls the Webservice.
I am looking for a solution which is not too much hardcoded for every single service, so the proxy still works when the wsdl changes and Server Clients get changed.
As far as I understand the payload factory mediator in (https://stackoverflow.com/a/12969814/2277620) you would have to hardcode the soap-format in the mediator.
If WSO2 is the wrong tool for that I'd like to have a hint which tool could help.
Thanks in advance!
Marco.
For my understanding, you want to have a proxy, but it's backend service/wsdl may vary..
What , you can do is, you can save the wsdl (dynamic wsdl)in registry and point that in your proxy. whenever you edit the wsdl, proxy will automatically adopt to that..But the request, which you send to your backend should follow the wsdl definitions..It is totally client side responsibility..
I have to maintain a Java EE 5 web app.
A part of this app is the exchange of messages through web services (with WSDL contract).
The wsdl is used to generate the Java classes through the Eclipse wsdl2Java (I think it uses Axis)
Now I have to implement a modification where the server that we call via Web Service must be able to respond in an async way.
In fact the server will not respond immediately with the SOAP message response but, after a while, call a web service exposed by the client (our web app)
passing the SOAP Message response of the first call as a field (parameter) of this second Web service invocation.
The client then will save the SOAP response (or XML) in a file.
Is there a way to populate the already generated Java classes using this XML or SOAP message file? I mean a way to simulate the direct response of the server (feeding the Axis binding Stub)
I have also tried to use JAXB (to bind XML to JAVA) but since the SOAP message response is complex, when I call JAXBContext I receive an error:
CodPrestazione does not have a no-arg default constructor
since this class is an enum class generated by the wsdl2Java.
Is there a way to bypass this error without annotating or modifying the java class (this class is generated so I will be forced to modify this class at every re-generation)?
What is the best way to consume a saved SOAP message file(or XML)? Alternatively, how can I deserialize SOAP using Axis 1.3?
I am new to Spring web services. I am going to create an xml request, and send it as a SOAP request to a web service and receive the response.I read different documents but still confused as I could not find a working sample yet.
I know that I should use WebServiceTemplate and WebServiceMessageSender, SaajSoapmessageFactory (please let me know if I am wrong) but not sure how to use them.
Do I need WSDL? if yes why?
If you have any sample code please send me to get clear on it.
Thanks
If you want to send SOAP requests, you would like to be a SOAP client. Seems like you want to use spring-ws project. Check out their great documentation on the client side. The same documentation will guide you through the process of creating a server. There are plenty of examples and ready-made configuration snippets waiting for you.
Spring-WS is built on top of XML Schema description of your message, so you will need WSDL to generate e.g. JAXB models of your requests and responses.
AFAIK, for "web services" , the WSDL file is the machine blueprint of the "ports" as they are called However! ports in WSDL "means" java language(or any other programming language used with a routine or sub or procedure or function) method and has a specific naming scheme associate the .wsdl xml file(template of the service). Each WSDL port(language method) has specifications of return value and data specifications for how to feed it arguments and their type values.
I'm looking to add a web services interface to an existing server application. The set of services to expose is not known at compile time and can change over the runtime life of the server.
From a tech standpoint all the server/web services endpoints will be on Windows.
In our server app a user will have the option to register workflows as 'web services callable'. This will create the WSDL defining this particular workflow service.
For the calling endpoint I'm thinking of an HttpModule that accepts the inbound web service request, unpacks the request and converts the XML data types into our server applications "domain", calls the server and finally converts the server outputs back into XML for return down the http connection.
Does that make sense?
Critical comments welcomed.
In effect writing your own WS engine. Clearly doable, but quite a bit of work to get right from scratch. I guess if you find some open source implementation, then adapting it should be possible.
A rather dirtier alternative, but one I've seen applied in another context, is to go for a simgle WS interface
String call( String workkFlowName, String payload)
The payload and response are both Strings containing any XML. So the caller needs to undestand the schemas for those XMLs. From the client's perspective the amount of coding effort is not much different. Your coding effort would I think be significantly redcued.
an HttpModule that accepts the inbound
web service request, unpacks the
request and converts the XML data
types into our server applications
"domain", calls the server and finally
converts the server outputs back into
XML for return down the http
connection.
That is what all web service frameworks do (e.g. Metro, Axis). So I can't see your problem. What's your concern with this approach?
The downside for the client is that, as far as I understand it, availability of your services may change over time. So you should consider a way to inform the client if the service is available (other than getting a time out error because it is not there), e.g. WS-ResourceLifetime or UUDI.
I ended up creating a C# class that implements the IHttpHandler interface. The implementation serves up the WSDL of the services exposed from our app and accepts SOAP posts to invoke the services. In the end most of the work went on converting SOAP types to our types and vice versa.