Message Handlers and Axis

[Sachet Varma]

Hi,

Could someone please guide me in creting a Handler class. I have created a Handler class that implements the Handler interface and have defined the handleRequest(MessageContext ...) method

My prob is , with Axis , am not sure which are the deployment files that need to be tweaked since am not sure which one corresponds to the webservice.xml and so on.

Could someone please guide me as to which deployment files need to be modified to add a Handler

Thanks!

[Ivan Krizsan]

Hi!
If the web service stack you are using adhere to the JAX-WS specification, then have two alternatives:
1) Use the @HandlerChain annotation on either the service implementation class, for handlers on the server side, or on a web service reference, for handlers on the client side.
The @HandlerChain annotation refers to an XML file in which the handlers are defined. This is an example of such a file:

<?xml version="1.0" encoding="UTF-8"?> 
<handler-chains xmlns="http://java.sun.com/xml/ns/javaee"> 
    <handler-chain> 
        <handler> 
            <handler-name>SomeHandlerName</handler-name> 
            <handler-class>com.ivan.HandlerClassName</handler-class> 
        </handler> 
    </handler-chain> 
</handler-chains>

2) Use the webservices.xml deployment descriptor:

<webservices xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.2" 
    xsi:schemaLocation=" 
        http://java.sun.com/xml/ns/javaee 
        http://java.sun.com/xml/ns/javaee/javaee_web_services_1_2.xsd"> 
    <!-- 
   This element defines a WSDL document file and a set of port 
   components that are associated to the ports defined in the 
   WSDL document. 
   A module (JAR/WAR-file) may contain multiple webservice 
   descriptions. 
    --> 
    <webservice-description> 
        <webservice-description-name>SomeService</webservice-description-name> 

            <!--
                 Here goes things like: Location of WSDL file, name of service and port elements in WSDL,
                 specification of protocol binding, service endpoint interface, link to servlet or EJB implementing
                 the web service.
            -->

            <handler-chains> 
                <handler-chain> 
                    <handler> 
                        <handler-name>someHandler</handler-name> 
                        <handler-class>com.ivan.MyHandler</handler-class> 
                    </handler> 
                </handler-chain> 
            </handler-chains> 
        </port-component> 
    </webservice-description> 
</webservices> 

Best wishes!