31.3. Publishing a Service in a Plain Java Application

Overview

When you want to deploy your application as a plain java application you need to implement the logic for publishing your endpoints in the application's main() method. Apache CXF provides you two options for writing your application's main() method.
  • use the main() method generated by the wsdl2java tool
  • write a custom main() method that publishes the endpoints

Generating a Server Mainline

The code generators -server flag makes the tool generate a simple server mainline. The generated server mainline, as shown in Example 31.2, “Generated Server Mainline”, publishes one service provider for each port element in the specified WSDL contract.
For more information see Section E.2, “cxf-codegen-plugin”.
Example 31.2, “Generated Server Mainline” shows a generated server mainline.

Example 31.2. Generated Server Mainline

package org.apache.hello_world_soap_http;

import javax.xml.ws.Endpoint;

public class GreeterServer {

    protected GreeterServer() throws Exception {
        System.out.println("Starting Server");
1        Object implementor = new GreeterImpl();
2        String address = "http://localhost:9000/SoapContext/SoapPort";
3        Endpoint.publish(address, implementor);
    }
    
    public static void main(String args[]) throws Exception { 
        new GreeterServer();
        System.out.println("Server ready..."); 
        
        Thread.sleep(5 * 60 * 1000); 
        System.out.println("Server exiting");
        System.exit(0);
    }
}
The code in Example 31.2, “Generated Server Mainline” does the following:
1
Instantiates a copy of the service implementation object.
2
Creates the address for the endpoint based on the contents of the address child of the wsdl:port element in the endpoint's contract.
3
Publishes the endpoint.

Writing a Server Mainline

If you used the Java first development model or you do not want to use the generated server mainline you can write your own. To write your server mainline you must do the following:
  1. Instantiate an javax.xml.ws.Endpoint object for the service provider.
  2. Create an optional server context to use when publishing the service provider.
  3. Publish the service provider using one of the publish() methods.
  4. Stop the service provider when the application is ready to exit.
Example 31.3, “Custom Server Mainline” shows the code for publishing a service provider.

Example 31.3. Custom Server Mainline

package org.apache.hello_world_soap_http;

import javax.xml.ws.Endpoint;

public class GreeterServer
{
  protected GreeterServer() throws Exception
  {
  }
    
  public static void main(String args[]) throws Exception
  { 
1    GreeterImpl impl = new GreeterImpl();
2    Endpoint endpt.create(impl);
3    endpt.publish("http://localhost:9000/SoapContext/SoapPort");

    boolean done = false;
4   while(!done)
    {
      ...
    }

5   endpt.stop();
    System.exit(0);
  }
}
The code in Example 31.3, “Custom Server Mainline” does the following:
1
Instantiates a copy of the service's implementation object.
2
Creates an unpublished Endpoint for the service implementation.
3
Publishes the service provider at http://localhost:9000/SoapContext/SoapPort.
4
Loops until the server should be shutdown.
5
Stops the published endpoint.