Pass attachments to WSIF

Note: This page applies to WebSphere Application Server - Express Version 5.0.2 and later only.

The following code fragment could invoke the service described by the example WSDL given in SOAP messages with attachments - writing the WSDL extensions:

import javax.activation.DataHandler;
. . .
DataHandler dh = new DataHandler(new FileDataSource("myimage.jpg"));
WSIFServiceFactory factory = WSIFServiceFactory.newInstance();
WSIFService service = factory.getService("my.wsdl",null,null,"http://mynamespace","abc");
WSIFOperation op = service.getPort().createOperation("MyOperation");
WSIFMessage in = op.createInputMessage();
in.setObjectPart("attch",dh);
op.executeInputOnlyOperation(in);

The associated type mapping in the DeploymentDescriptor.xml file depends upon your SOAP server. For example if you use Tomcat with SOAP 2.3, then DeploymentDescriptor.xml contains the following type mapping:

<isd:mappings>
<isd:map encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
 xmlns:x="http://mynamespace"
 qname="x:datahandler"
 javaType="javax.activation.DataHandler"
 java2XMLClassName="org.apache.soap.encoding.soapenc.MimePartSerializer"
 xml2JavaClassName="org.apache.soap.encoding.soapenc.MimePartSerializer" />
</isd:mappings> 

In this case, the backend service is invoked with the following signature:

public void MyOperation(DataHandler dh);

Attachments can also be passed in to WSIF using stubs:

DataHandler dh = new DataHandler(new FileDataSource("myimage.jpg"));
WSIFServiceFactory factory = WSIFServiceFactory.newInstance();
WSIFService service = factory.getService("my.wsdl",null,null,"http://mynamespace","abc");
MyInterface stub = (MyInterface)service.getStub(MyInterface.class);
stub.MyOperation(dh);

Attachments can also be returned from an operation, but only one attachment can be returned as the return parameter.