November 2005
Intermediate to advanced
896 pages
31h 5m
English
Content preview from Java Enterprise in a Nutshell, Third Edition
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Web Services (webservices.xml)
SOAP web services are implemented in J2EE using JAX-RPC, and service implementations can take the form of a basic Java bean deployed as a web component or a stateless session EJB component. In either case, a webservices.xml deployment descriptor is used within the component archive (the war file or ejb-jar.xml file) to declare and configure the web services implemented by the components in the archive.
Figure A-15 shows the overall XML schema structure used in webservices.xml files.
Example A-15 shows sample web service declarations, annotated with descriptive comments.
Figure A-15. Web service declarations
Example A-15. Annotated web service declarations
<?xml version="1.0" encoding="UTF-8"?> <webservices xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/j2ee_web_services_1_1.xsd" version="1.1"> <description>Web services contained in my application</description> <display-name>Web services</display-name> <icon> <small-icon>icons/my-small-ws-icon.jpg</small-icon> <large-icon>icons/my-large-ws-icon.jpg</large-icon> </icon> <!-- Each webservice-description element defines a full web service implemented somewhere in the surrounding component archive (web or EJB). Each service specifies a WSDL file and a JAX-RPC mapping file ...
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