Programming the JWS File 4-3
4.3.1 Example of a JWS File
The following sample JWS file shows how to implement a simple Web service. package examples.webservices.simple;
Import the standard JWS annotation interfaces import javax.jws.WebMethod;
import javax.jws.WebService; import javax.jws.soap.SOAPBinding;
Table 4–1 Steps to Program the JWS File
Step Description
1 Import the standard JWS
annotations that will be used in your JWS file.
The standard JWS annotations are in either the javax.jws, javax.jws.soap
, or javax.xml.ws package. For example: import javax.jws.WebMethod;
import javax.jws.WebService; import javax.jws.soap.SOAPBinding;
import javax.xml.ws.BindingType;
2 Import additional
annotations, as required. For a complete list of JWS annotations that are supported, see Web Service
Annotation Support in WebLogic Web Services Reference for Oracle WebLogic Server.
3 Add the standard required
WebService JWS
annotation at the class level to specify that the Java class
exposes a Web service. See
Section 4.3.2, Specifying that the JWS File Implements a Web Service WebService Annotation.
4 Add the standard
SOAPBinding JWS
annotation at the class level to specify the mapping between
the Web service and the SOAP message protocol.
Optional In particular, use this annotation to specify whether the Web service is
document-literal, document-encoded, and so on. See Section 4.3.3,
Specifying the Mapping of the Web Service to the SOAP Message Protocol SOAPBinding Annotation.
Although this JWS annotation is not required, Oracle recommends you explicitly specify it in your JWS file to clarify the type of SOAP bindings a
client application uses to invoke the Web service. 5
Add the JAX-WS BindingType
JWS annotation at the class level to
specify the binding type to use for a Web service
endpoint implementation class. Optional
See Section 4.3.7, Specifying the Binding to Use for an Endpoint
BindingType Annotation.
6 Add the standard
WebMethod annotation for
each method in the JWS file that you want to expose as a
public operation. Optional Optionally specify that the operation takes only input parameters but does
not return any value by using the standard Oneway annotation. See Section 4.3.4, Specifying That a JWS Method Be Exposed as a Public
Operation WebMethod and OneWay Annotations. 7
Add WebParam annotation to customize the name of the
input parameters of the exposed operations.
Optional See
Section 4.3.5, Customizing the Mapping Between Operation Parameters and WSDL Elements WebParam Annotation.
8 Add WebResult
annotations to customize the name and behavior of the
return value of the exposed operations. Optional
See Section 4.3.6, Customizing the Mapping Between the Operation Return
Value and a WSDL Element WebResult Annotation.
9 Add your business code.
Add your business code to the methods to make the WebService behave as required.
4-4 Getting Started With JAX-WS Web Services for Oracle WebLogic Server
Standard JWS annotation that specifies that the porType name of the Web Service is SimplePortType, the service name is SimpleService, and the
targetNamespace used in the generated WSDL is http:example.org WebServicename=SimplePortType, serviceName=SimpleService,
targetNamespace=http:example.org Standard JWS annotation that specifies the mapping of the service onto the
SOAP message protocol. In particular, it specifies that the SOAP messages are document-literal-wrapped.
SOAPBindingstyle=SOAPBinding.Style.DOCUMENT, use=SOAPBinding.Use.LITERAL,
parameterStyle=SOAPBinding.ParameterStyle.WRAPPED This JWS file forms the basis of simple Java-class implemented WebLogic
Web Service with a single operation: sayHello public class SimpleImpl {
Standard JWS annotation that specifies that the method should be exposed as a public operation. Because the annotation does not include the
member-value operationName, the public name of the operation is the same as the method name: sayHello.
WebMethod public String sayHelloString message {
System.out.printlnsayHello: + message; return Here is the message: + message + ;
} }
4.3.2 Specifying that the JWS File Implements a Web Service WebService Annotation
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