Develop a service endpoint interface from Java Beans for JAX-RPC applications

You must develop a service endpoint interface if we are developing a JAX-RPC Web service from a Java Beansimplementation. we need to set up a development environment for Web services and access an existing Java bean WAR file.

This task is a required step in developing a JAX-RPC Web service from a Java bean.

The service endpoint interface defines the methods for particular JAX-RPC Web services. The Java Beans implementation must implement methods with the same signature as the methods on the service endpoint interface.

A number of restrictions apply on which types to use as parameters and results of service endpoint interface methods. These restrictions are documented in the JAX-RPC specification.

We can also create a service endpoint interface by using assembly tools. Develop a service endpoint interface for a Java Beans implementation by following the actions listed:

 

1. Create a Java interface that contains the methods to include in the service endpoint interface. If we start with an existing Java interface, remove any methods that do not conform to the JAX-RPC specification.

2. Compile the interface.

   Use the name of the service endpoint interface class in the javac command for the class to compile.

   (Windows) Use the javac commands.

   [Linux] [AIX] [HP-UX] [Solaris]

   On operating systems such as AIX or Linux, refer to the developing thin application client code documentation.

 

Results

we have developed a service endpoint interface that we can use to develop Web services.

 

Example

The following example depicts the AddressBook interface:

package addr; public interface AddressBook {
    /**
     * Retrieve an entry from the AddressBook.
     * 
     *@param name the name of the entry to look up.
     *@return the AddressBook entry matching name or null if none.
     *@throws java.rmi.RemoteException if communications failure.
     */
    public addr.Address getAddressFromName(java.lang.String name);
}

Use the AddressBook interface to create the service endpoint interface:

1. Make a copy of the AddressBook.java interface and name it AddressBook_SEI.java. Use this copy as a template for the service endpoint interface.

2. Compile the interface.

 

Next steps

Continue to gather the artifacts that are required to develop a Web service, including the WSDL file. You need to develop a WSDL file because it is the engine of a Web service. Without a WSDL file, you do not have a Web service.

Assembly tools

 

Related tasks

Implement Web services applications with JAX-RPC
Implement Web services applications from existing WSDL files with JAX-RPC
Set up a development environment for Web services
Develop a WSDL file for JAX-RPC applications

 

Related

Artifacts used to develop Web services
Web services specifications and APIs