WAR file

The WAR Contents

Typically, one creates the  WAR file with a GUI development tool or with the ant war task from the generated artifacts from wsimport, wsgen, or apt tools.

For example, a sample WAR file starting from a WSDL file:

WEB-INF/classes/hello/HelloIF.class          SEI
WEB-INF/classes/hello/HelloImpl.class        Endpoint
WEB-INF/sun-jaxws.xml                        JAX-WS RI deployment descriptor
WEB-INF/web.xml                              Web deployment descriptor
WEB-INF/wsdl/HelloService.wsdl               WSDL
WEB-INF/wsdl/schema.xsd                      WSDL imports this Schema

The sun-jaxws.xml File

The <endpoints> element contain one or more <endpoint> elements. Each endpoint represents a port in the WSDL and it contains all information about implementation class, servlet url-pattern, binding, WSDL, service, port QNames.  The following shows a sun-jaxws.xml file for a simple HelloWorld service. sun-jaxws.xml is the schema instance of sun-jaxws.xsd.

<?xml version="1.0" encoding="UTF-8"?>
<endpoints
  xmlns="http://java.sun.com/xml/ns/jax-ws/ri/runtime"
  version="2.0">
  <endpoint
    name="MyHello"
    implementation="hello.HelloImpl"
    url-pattern="/hello"/>
</endpoints>

• endpoint can have the following attributes

• Attribute	Optional	Use
  name	N	Name of the endpoint
  wsdl	Y	Primary wsdl file location in the WAR file. For e.g. WEB-INF/wsdl/HelloService.wsdl. If this isn't specified, JAX-WS will create and publish a new WSDL. When the service is developed from Java, it is recommended to omit this attribute.
  service	Y	QName of WSDL service. For e.g. {http://example.org/}HelloService. When the service is developed from java, it is recommended to omit this attribute.
  port	Y	QName of WSDL port. For e.g. {http://example.org/}HelloPort. When the service is developed from Java, it is recommended to omit this attribute.
  implementation	N	Endpoint implementation class name. For e.g: hello.HelloImpl. The class should have @WebService annotation. Provider based implementation class doesn't have to have this annotation.
  url-pattern	N	Should match <url-pattern> in web.xml
  binding	Y	Binding id defined in the JAX-WS API. The possible values are: "http://schemas.xmlsoap.org/wsdl/soap/http", "http://www.w3.org/2003/05/soap/bindings/HTTP/" If omitted, it is considered SOAP1.1 binding.
  enable-mtom	Y	Enables MTOM optimization. true or false. Default is false.

• 
  
• endpoint can have a optional handler-chain element

<?xml version="1.0" encoding="UTF-8"?>
<endpoints ...">
  <endpoint ...>
    <handler-chain>
      <handler-chain-name>somename</handler-chain-name>
      <handler>
        <handler-name>MyHandler</handler-name>
        <handler-class>hello.MyHandler</handler-class>
      </handler>
    </handler-chain>
  </endpoint>
</endpoints>

The web.xml File

The following shows a web.xml file for a simple HelloWorld service. It specifies JAX-WS RI specific listener, servlet classes. These classes are com.sun.ws.transport.http.servlet.JAXRPCContextListener, and com.sun.xml.ws.transport.http.servlet.JAXRPCServlet is servlet

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/j2ee/dtds/web-app_2_3.dtd">

<web-app>
  <listener>
    <listener-class>com.sun.xml.ws.transport.http.servlet.JAXRPCContextListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>hello</servlet-name>
    <servlet-class>com.sun.xml.ws.transport.http.servlet.JAXRPCServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>hello</servlet-name>
    <url-pattern>/hello</url-pattern>
  </servlet-mapping>
  <session-config>
    <session-timeout>60</session-timeout>
  </session-config>
</web-app>

Remember these requirements when building a WAR:

• WSDL and auxiliary WSDL, Schema files should be packaged under WEB-INF/wsdl dir. It is recommended that they need not be packaged when the service is started from Java
  
• WebService implementation class should contain @WebService annotation. Provider based endpoints need not have @WebService annotation.
• wsdl, service, port attributes for endpoint element are mandatory for Provider based endpoints.
  

Copyright © 2005 Sun Microsystems, Inc. All rights reserved.