Error while invoking bpel through java

Question

when i was using java to invoke iam getting an exception
com.oracle.bpel.client.ServerException: IDeliveryService.request() invoked for one-way operation 'initiate'. This method can only be used to invoke two-way operations which return an output message. Please check the WSDL which defines this operation and use the method IDeliveryService.post() to invoke a one-way operation.
when iam using html the bpel works fine.
But when i use java with IDeliveryService.post() it is giving error in Bpel flow by saying
exception on JaxRpc invoke:
start fault message:
Internal Server Error (Caught exception while handling request: oracle.forms.jdapi.JdapiException: '' does not have an extension)
:end fault message.
Please help me in this issue.

Answer 1

try as follows
Invoking a one-way operation via Java API The procedure for invoking a one-way BPEL operation via the Java API is very similar, except that you will use the IDeliveryService.post() method (which is also overloaded). These methods invoke a one-way operation on a BPEL process and thus return void since a response is not expected (at least not a synchronous response). In the code example shown here, the post method used is exactly the same as the request() shown above, except that it returns void: From JavaDoc for com.oracle.bpel.client.dispatch.IDeliveryService <br><br>
public void post(java.lang.String processId, java.lang.String operationName, NormalizedMessage message) throws java.rmi.RemoteException <br>
<br><br>Selected JSP source:<br><br>
<%@page import="com.oracle.bpel.client.Locator" %> <br>
<%@page import="com.oracle.bpel.client.NormalizedMessage" %> <br>
<%@page import="com.oracle.bpel.client.dispatch.IDeliveryService" %> ... <br>Locator locator = new Locator("default", "bpel", null); <br>
... NormalizedMessage nm = new NormalizedMessage( ); <br>
nm.addPart("payload" , xml ); <br>
deliveryService.post("HelloWorld", "initiate", nm); <br>
out.println( "BPELProcess HelloWorld initiated!" ); %>