You can develop a Web Services Description Language (WSDL)
file to describe the characteristics of your Java™ API
for XML-based RPC (JAX-RPC) Web services application including where
the service resides and how to invoke the service using an XML format.
Before you begin
Depending on your development path, develop a service endpoint
interface from a JavaBeans™ implementation or
develop a service endpoint interface from an enterprise bean implementation.
About this task
You need a WSDL file to use Web services. You can develop
your own WSDL file or get one from a Web services provider through
e-mail, downloading, or through a Uniform Resource Locator (URL).
This documentation assumes you are creating your own.
Develop
a WSDL file by following the actions listed:
Procedure
- Configure the service endpoint interface
class and referenced classes into your CLASSPATH variable.
- On Windows® systems, set CLASSPATH="%CLASSPATH%;<list
your application Java archive (JAR) files and classes>".
- On UNIX® and Linux® systems,
export CLASSPATH="$CLASSPATH:<list your application
JAR files and classes>".
- Run the Java2WSDL seiInterface command.
A WSDL file named seiInterface.wsdl is created.
- Move the WSDL file to the META-INF/wsdl subdirectory
if you are using Enterprise JavaBeans (EJB).
- Move the WSDL file to the WEB-INF/wsdl subdirectory
if you are using JavaBeans.
- Edit the generated WSDL file and inspect the part names.
The WSDL parts have names like arg_0_0. Modify the
WSDL file to use the actual names of the Java parameters.
- (Optional) Use the Java2WSDL command tool to generate
the correct part names of WSDL file. You can automatically
generate and set the correct part names by using the Java2WSDL command
tool. Generating and setting the part names is done by providing additional
information to the Java2WSDL command tool in the form of a Java implementation class that implements the
same methods as the service endpoint interface and is compiled with
debug information turned on. Parameter names are stored in the .class file
with the debug information. If your implementation class is compiled
with debug on, you can use the Java2WSDL -implClass seiImpl
seiInterface command to generate a WSDL file with the proper
part names.
Results
A WSDL file that defines the Web services described by the
service endpoint interface.
Example
This example uses the JAR file name AddressBook.jar that
contains a class named AddressBook.class class file.
You
must add the AddressBook.jar file to your CLASSPATH to create
the WSDL file. The JAR file contains an EJB implementation class that
is compiled with debugging information turned on. Run the Java2WSDL
-implClass addr.AddressBookBean addr.AddressBook command to create
the file, AddressBook.wsdl.
What to do next
Depending on your development path, develop Web services
deployment descriptor templates for JavaBeans or
develop Web services deployment descriptor templates
for an enterprise beans implementation.