Dynamically invoking a web service.

How can i dynamically invoke a web service using jax-ws proxy?

We will need more information on your use case.
Typically, a JAX-WS proxy refers to the Java Proxy object that implements the interface for your port. If this is what you have then you could dynamically invoke it using reflection.
However, if you really want to do dynamic invocation then you should look at the Dispatch interface. You can get a Dispatch instance from your Service object and use this to issue raw requests using SOAPMessage or streams. This will require that your application have expertise in generating SOAP requests from the WSDL of the target endpoint, but this is what is typically done in enterprise service bus type products.
If that's not your use case, let us know.

Similar Messages

Invoking a web service from dynamic client in weblogic 7

Is it possible to invoke a webservice from dynamic client in weblogic 7. Because i tried and it doesn't work. But it works with WL 8.1
I don't see any samples on the net for weblogic 7.

Hello rss,
If you want to invoke a web service from a JCD you will have to build the SOAP message using JAX-RPC or AXIS and then programmatically creat an HTTP connection.
Or you can leverage the HTTP(S) eWay and then you only have to build the SOAP message.
Or use eInsight. You can import a WSDL into eInsight and eInsight will offer you a business process Activity to invoke the web service operations defined in the WSDL.

Problem invoking a web service from soa11g BPEL.

Hi ,
I am trying to invoke a web service from soa bpel 11g composite.
We have the wsdl, wsdl URL of the web service along with the user name , password credentials.
Initially w/o any WS policy attached and testing the composite, it fails with the below message
*<fault>*
*<bpelFault>*
*<faultType>0</faultType>*
*<remoteFault>*
*<part name="summary">*
*<summary>An Authentication object was not found in the SecurityContext</summary>*
*</part>*
*<part name="detail">*
*<detail>javax.xml.ws.soap.SOAPFaultException: An Authentication object was not found in the SecurityContext</detail>*
*</part>*
*<part name="code">*
*<code>soap:Server</code>*
*</part>*
*</remoteFault>*
*</bpelFault>*
*</fault>*
*<faultType>*
*<message>0</message>*
*</faultType>*
*</messages>*
So I have gone back to the composite and added the WS policy (oracle/wss_username_token_client_policy) by Right clicking on web service -> Configure WS Policy -> Security -> oracle/wss_username_token_client_policy -> OK.
After this I have added the following binding properties 'oracle.webservices.auth.username' , 'oracle.webservices.auth.password' with the respective values and deployed it again.
Even then I face the same issue. I have looked into the EM console and found the HTTP username and password properties were blank for this Web service even though the WS policy was attached.
Later I have tried editing the username pwd from the EM console, only to find out that the composite was now failing in the previous step (an ordinary db adapter with a select statement) even before it reaches the web service invocation.
If I redeploy the composite, the http username and pwd properties in the EM console are erased and when i test it, it errors out at the web service invocation with the same issue again.
Any pointers on how to solve this issue ??
How can I figure out what is the security policy the web service is using ??
Regards,
Shiva Kiran

Hi,
Can anyone help me with this ??
I guess I am not able to send the authorization credentials via the request to the web service invocation.
Plz help ! This is a bit urgent..
Regards,
Shiva Kiran

How to get the list of values for a dynamic parameter using Web Services SDK?

I am struggling to get the list of values for a dynamic parameter of a report.I am using Java Web Services SDK ... I tried to use PromptInfo.getLOV().getValues() method but it does not work.First of all ... is this possible (to get the list of values for a dynamic param) using Web Services?Second of all, if this is possible, how should I do it ... it seems it works fine when running the report from CMC. It asks for DB logon info and after that it provides a list of values.Thx 

Your assumption is correct. We are trying to get the LOVs from the Crystal Report. I was not aware that this is not supported by Web Services SDK.We used Web Services SDK to integrated the Crystal Reports in our web application. We implemented some basic actions for reports: schedule, view instances, run ad-hoc reports.We encountered this problem when trying to run/schedule reports with dynamic parameters (a list of values from DB). We were unable to get the LOVs.Please let me know if you can think of an alternative to look at.Thanks a lot,Catalin

Extra Tag Getting Added while invoking a Web service

Hi all,
We are facing an issue while trying to invoke a web service. We are assigning values to invoke input variable of the invoke. The issue is that while invoking an Extra element named “input” is getting added.
For Eg: The required one is
<messages>
<invoke_Webservice_Input>
Payload
</invoke_Webservice_Input>
</messages>
But what is getting passed is :
<messages>
*<input>*
<invoke_Webservice_Input>
Payload
</invoke_Webservice_Input>
*</input>*
</messages>
Due to this, the invoke is failing and we are not able to proceed. The error which we are getting is "*exception on JaxRpc invoke: unexpected null*"
If any has faced similar issues, please share your experience.
PS: The same wsdl is working in other environments. only thing we changed is the Endpoint URI and that endpoint URI is also accessible.
Thanks
Mohan

can u re import the wsdl into the process and then change the endpoint uri... undeploy the previous process.. bounce the server and then deploy the new process and try

Unexpected element name: expected error while invoking external web service

Hi,
In JDeveloper when I invoke external web service call, I am getting following exception
"unexpected element name: expected=..."
But the same application works fine in .NET. Can someone help me as to why I am getting the exception only in JDeveloper and how to fix this exception.
Thanks.

Hi,
Without more information, it will be hard to help, and tell you what could be teh issue.
Usually, this kind of error occurs when the payload and the WSDL schema are out of sync, for example if the order of the element on the wire do not match the order in a sequence declaration, you may get this error.
In such case, .NET handle the XML as if it was a 'all' -- no specific order -- and deserialize the message properly.
Hope this helps,
-eric

Web Service Proxy client to invoke a Web service on SSL (Jdev 10.1.3.1)

Hi,
I have to develope a Web Service proxy client to invoke a web service on SSL. First I'm testing with OC4J 10.1.3.1 and JDEV 10.1.3.1 and did this:
1) Developed a basic PL/SQL Web Service with JDEV and publish on my standalone OC4J.
2) Made a test with a browser, it worked OK
3) Generated a proxy client from JDev 10.1.3.1 to invoke web service, it worked OK
--- Now make it work on SSL----
4) Then, added SSL configuration to oc4j , generated a certificate with keytool (updated server.xml, secure-web-site.xml), and shutting down and starting the OC4j instance.
5) Import the certificate to JAVA_HOME/jre/lib/security/cacerts
6) Test web service from browser on https and worked OK.
7) When tried to modified proxy client (generated in step 3) to make it work on SSL, I realized that just changing the END_POINT to the new url (https) it worked!
Questions----
1.- By default the proxy client generated from JDEV 10.1.3.1 knows how to deal with SSL conections?
2.- If I dont have previously the server certificate to import it into JAVA keystore (cacerts) how could I ,from proxy client code, capture it and import it before the validation occurs... because if the certificate is not in keystore , the program fails.
Thanks in advance
J.

Hi,
Could you please provide me with the steps necessary to create a web service proxy client through JDeveloper or any other mechanism when 2 way SSL (requiring client authentication) is enabled.
Thanks a lot in advance
Nilesh

Invoking a web service from jcd

hi all,
Is there any built-in class in CAPS5.1 for invoking a web servervice from jcd directly. Or is there any some other automation/mechanism to achieve the same, plz provide me any sample code avilable for the same.its very urgent for me.
Thanks

Hello rss,
If you want to invoke a web service from a JCD you will have to build the SOAP message using JAX-RPC or AXIS and then programmatically creat an HTTP connection.
Or you can leverage the HTTP(S) eWay and then you only have to build the SOAP message.
Or use eInsight. You can import a WSDL into eInsight and eInsight will offer you a business process Activity to invoke the web service operations defined in the WSDL.

Issues in invoking a web service from a JAVA/BPEL client...

We are trying to invoke a web service from a JAVA/BPEL client using org.apache.soap classes. But everytime we are running into issues of IllegalAccessError or InvalidClassError or IncompatibleClassError based on different jars we are trying to include in our project. Attached is a simple BPEL project which tries to invoke a web service through JAVA embedding (no supporting jars need to be included explicitly). It erros with following trace:
Class org/apache/soap/Envelope violates loader constraints
 Invalid class: org.apache.soap.Envelope
 Loader: soap:10.1.3
 Code-Source: /slot/ems1508/oracle/product/10.1.3.1/OracleAS_1/webservices/lib/soap.jar
 Configuration: <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in /slot/ems1508/oracle/product/10.1.3.1/OracleAS_1/j2ee/home/oc4j.jar
 Dependent class: org.apache.soap.rpc.RPCMessage
 Loader: soap:10.1.3
 Code-Source: /slot/ems1508/oracle/product/10.1.3.1/OracleAS_1/webservices/lib/soap.jar
 Configuration: <code-source> (ignore manifest Class-Path) in META-INF/boot.xml in /slot/ems1508/oracle/product/10.1.3.1/OracleAS_1/j2ee/home/oc4j.jar
Could you please help us out or provide any pointers. Any help would be highly appreciated

Because you weren't told what to get, perhaps you already have it eh?
What you want to read up about is JAX-WS, which is the webservice API bundled by default with your JDK (Java 6 and up). You'll find the wsimport tool in the bin directory of your JDK. I recommend you explore that directory and read up about all the executables you can find there, to be more prepared in the future. Know the tools you work with and all that. Most tools have a manual on this website:
http://www.oracle.com/technetwork/java/javase/tech/index.html
(under tools and utilities). Not wsimport, that is part of the jax-ws documentation. Better you look for jax-ws tutorials using Google, it will be quicker.

10g: Invoking a web service asynchronously from BPEL

Hello,
I am trying to figure out a good, generic method for making a previously synchronous web service asynchronous and changing the way in which it is invoked from BPEL. I am using SOA Suite 10g (10.1.3.5)
As I understand, one possible method to achieve this is to use IDeliveryService.post() to deliver the web service's response to the BPEL process. For this route, the standard practice of correlation seems to be to supply a correlation Id when invoking the web service and returning the same correlation id as a part of the web service's response message. However, I want to avoid this since it would mean that all response messages from the web service (10+) would have to be modified to include a correlationId, which is problematic in the special case of this web service. Including a correlationId in the request message is possible, however.
I have tried the approach of using the conversation Id directly instead of the correlation Id, by reading the value of ora:getConversationId(), passing this to the web service and setting the property CONVERSATION_ID of the response NormalizedMessage to the same value when returning. However, I cannot seem to get this approach right. Is this possible at all?
An alternative might be to use WS-Addressing, but I do not know if I can make the web service support this - it is written using the EJB WebService-Annotations feature and runs on OC4J as well.
Do you have any suggestions on how this problem could be resolved?
Edited by: 901765 on 12.12.2011 06:01

I have found the following tutorial that implements something similiar to what I am trying to do: http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/odi/10g/10135/odiscenario_bpelcallback/odiscenario_bpelcallback.htm#t3
Because of this, I am now confident that the conversation IDs can be used to achieve correlation. I have implemented the pattern by performing
an invoke activity on the web service, passing the result of ora:getConversationId() as part of the message. The conversation Id returned is of UUID-Form.
After the invoke activity, I have added a pick activity to receive the response message supplied by the web service through IDeliveryService.post(...). I can see that the message is received correctly by loooking at the contents of DLV_MESSAGE. However, the pick activity times out every time (after 10m). Looking at DLV_SUBSCRIPTION reveals that the conversation_id for the pick/receive activity is set to a value of the form bpel://localhost/default/MyBpelProcessName~1.0/7610001-BpInv0-BpSeq2.7-2. As far as I know, this should instead be set to the UUID that ora:getConversationId() returned before performing the invoke activity. What is going wrong here?
Thanks for your help!

Oracle EBS throwing exception while invoking the web service

Hi,
When I try to invoke the web service through SOAPUI it is working perfectly fine. however when I try to call it using a .net client. I am getting the below exception:
oracle.apps.fnd.soa.util.SOAException: ServiceProcessingError: System ErrorServiceGenerationError: Error in Creating Response MessageServiceGenerationError: Error in getting translated error messagenull.
Please help me.
Thanks,
Manish

Hi Manish,
Please check notes:
R12.1.1: ISG BPEL Calls Results in java.net.sockettimeoutexception & oracle.apps.fnd.soa.util.SOAException (Doc ID 1103755.1)
"Error in getting translated error messagenull" When Invoking a web service from SOAP UI (Doc ID 1507313.1)
Thanks &
Best Regards,
Asif

Invoking a web service via proxy

Hi,
I have requirement to invoke a web service protected by basic http authentication.
I have generated a jax-ws proxy, the proxy makes a local copy of the wsdl.
And I use the following code to invoke it:
lDAPUserAdminService = new LDAPUserAdminService();
LDAPUserAdminServiceSoap lDAPUserAdminServiceSoap = lDAPUserAdminService.getLDAPUserAdminServiceSoap();
BindingProvider bindingProvider = (BindingProvider) lDAPUserAdminServiceSoap;
Map<String,Object> rc = (Map<String,Object>)bindingProvider.getRequestContext();
rc.put(BindingProvider.USERNAME_PROPERTY, "lclient");
rc.put(BindingProvider.PASSWORD_PROPERTY, "xxxxx");
lDAPUserAdminServiceSoap.getUser()..
it works fine for the url that is used to generate the proxy.
But when I try to invoke the same service deployed on a different server using the following code:
lDAPUserAdminService = new LDAPUserAdminService(
new URL("http://10.23.48.132:7003/LDAPAdminServices/user/LDAPUserAdminService.jws?wsdl"),
new QName("http://www.openuri.org/", "LDAPUserAdminService")); *//gives 401 error*
LDAPUserAdminServiceSoap lDAPUserAdminServiceSoap = lDAPUserAdminService.getLDAPUserAdminServiceSoap();
BindingProvider bindingProvider = (BindingProvider) lDAPUserAdminServiceSoap;
Map<String,Object> rc = (Map<String,Object>)bindingProvider.getRequestContext();
rc.put(BindingProvider.USERNAME_PROPERTY, "lclient");
rc.put(BindingProvider.PASSWORD_PROPERTY, "xxxxx");
lDAPUserAdminServiceSoap.getUser()..
I get 401 unauthorized error when trying to create the proxy itself trying to access the wsdl.
Is there any way to pass credentials programatically so that the proxy can access the wsdl.
Really appreciate any help!!
Anil

Hi,
Have a look at this one...
http://www.rgagnon.com/javadetails/java-0085.html
Cheers,
Vlad

Error in Invoking External Web Service in BPEL

Hello,
I have a Temperature Conversion Web Service deployed on an external server.
I want to invoke this Web Service in my BPEL process.
I got the wsdl loacation of the Web Service as "http://webservices.daelab.net/temperatureconversions/TemperatureConversions.wso?WSDL" and then in my workspace, I created a Web Service out of that WSDL.
My idea was to create a web service out of that WSDL and then to deploy that web service on SOA server so that i can invoke that deployed service in my BPEL process, but when i am creating a web service out of that WSDL , and trying to test the webservice in my local oc4j, i am gettting a fault exception.
Am i doing anything wrong ? Is there any other alternative to call a external web service in BPEL?
Thanks
Nutan

Hi,
you are on the wrong track....
Open your BPEL. Put the http://webservices.daelab.net/temperatureconversions/TemperatureConversions.wso?WSDL into a PartnerLink and wire an invoke against this PartnerLink....
Put the parameters via assign into the variables.
Done...
Why do you want to create an interal webservice and invoke this one via BPEL? Do you want to invoke the external webservice from the internal one?

Error invoking a web service within another web service

Hi all!
I have to develop a web service which needs to invoke another web service, thus the first web service is acting as a client of the second one. To get this, the first web service uses the proxy provided by the home page of the second one. However, when the first service invokes the second service, the body within the soap message is modified in such a way that it is not valid for the second service, because some namespaces declarations are added, in spite of the fact that they already exist. Then, I find the following:
Body of the SOAP request created by the first web service:
<a:request attribute1="urn:attribute:one"
xmlns:a="urn:namespace:one" xmlns:b="urn:namespace:two">
<b:body>Hello</b:body>
</a:request>
Body of the SOAP request received by the second web service:
<a:request xmlns:a="urn:namespace:one"
attribute1="urn:attribute:one"
xmlns:a="urn:namespace:one" xmlns:b="urn:namespace:two">
<b:body xmlns:b="urn:namespace:two">Hello</b:body>
</a:request>
I have also tried to run a client using this proxy outside the web service, and everything is ok. So, from my point of view, the problem is when running the proxy inside a web service. I wonder if I have to do something special with this proxy in order to use it within a web service.
Has anybody run into this situation?
Could anybody be so kind as to tell me how to solve it or if, on the contrary, it is an oc4j bug, please?
Thank you very much in advance.
Inma.

Hi,
Thanx it is working now.
BTW can you give me some urls with info of this kind of setting which i need to do for other kind of integarions in J2EE platform.Sorry if i am asking too much as i am a starter in this technology.

Invoking a web service from a java code

Hello
I created a simple Web service using JDevlper. It contains two methods
1) getInf int () {
return inf;}
2) void setInf (int a) {
inf = a;}
I have deployed it on Oracle Application server. By inserting the address in a browser, I tried both methods and it works correctly.
Here I am looking how to invoke this web service using a java client and use the method setInf (5 ) / * for example * /.
I search but I have not found an answer that works :(. I hope you could help me to solve this problem.
Thank you in advance

Because you weren't told what to get, perhaps you already have it eh?
What you want to read up about is JAX-WS, which is the webservice API bundled by default with your JDK (Java 6 and up). You'll find the wsimport tool in the bin directory of your JDK. I recommend you explore that directory and read up about all the executables you can find there, to be more prepared in the future. Know the tools you work with and all that. Most tools have a manual on this website:
http://www.oracle.com/technetwork/java/javase/tech/index.html
(under tools and utilities). Not wsimport, that is part of the jax-ws documentation. Better you look for jax-ws tutorials using Google, it will be quicker.

Dynamically invoking a web service.

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