Getting started with JAX-WS

JAX-WS stands for Java API for XML Web Services. It is a Java programming language API for creating web services and clients that communicate using XML. This post is a quick start for JAX-WS.

Prerequisites
GlassFish integrated with Eclipse.

Creating the JAX-WS Web Service

1. In Eclipse create a Dynamic Web Project called "com.eviac.blog.jaxwsproj". Make GlassFish as the Target Runtime.
   
2. Create a new class called "SampleWS" in the created project. This will be the implementation class of the web service.
   
   SampleWS.java

   package com.eviac.blog.jaxws.service;
   
   import javax.jws.WebMethod;
   import javax.jws.WebService;
   
   @WebService
   public class SampleWS {
   
    @WebMethod
    public int sum(int a, int b) {
     return a + b;
    }
   
    @WebMethod
    public int multiply(int a, int b) {
     return a * b;
    }
   
   }
   
   

3. Open a terminal and navigate to the root of the project directory. Create a directory called wsdl inside WebContent/WEB-INF/. Use the following command to create web service artifacts. Make sure your JAVA_ HOME is set properly or this command will not work. Also make sure to build the project before running this command or it will complain class not found.

   wsgen -classpath build/classes/ -wsdl -r WebContent/WEB-INF/wsdl -s src -d build/classes/ com.eviac.blog.jaxws.service.SampleWS
   

   
4. Refresh the project to discover created artifacts. Open the created WSDL-file inside wsdl folder. Search for REPLACE_WITH_ACTUAL_URL and replace it with the web service URL: http://localhost:8080/com.eviac.blog.jaxwsproj/SampleWSService, and save the file.
   
   
   
5. Deploy the project in Glassfish by right-clicking the project, click Run As -> Run on Server and select the Glassfish server.
   
   

Creating the JAX-WS client

1. Create a Java project in eclipse called "com.eviac.blog.jaxwsclientproj". Open up a new terminal and go to the project root. Use the following command to generate the classes you need to access the web service. Here you will need to use the URL of the WSDL file.

   wsimport -s src -d bin http://localhost:8080/com.eviac.blog.jaxwsproj/SampleWSService?wsdl
   

   
2. Create a new class called "SampleWSClient" in the project.
   
   SampleWSClient.java

   package com.eviac.blog.jaxws.client;
   
   import javax.xml.ws.WebServiceRef;
   
   import com.eviac.blog.jaxws.service.SampleWS;
   import com.eviac.blog.jaxws.service.SampleWSService;
   
   public class SampleWSClient {
   
    @WebServiceRef(wsdlLocation = "http://localhost:8080/com.eviac.blog.jaxwsproj/SampleWSService?wsdl")
    private static SampleWSService Samplews;
   
    public static void main(String[] args) {
     SampleWSClient wsClient = new SampleWSClient();
     wsClient.run();
    }
   
    public void run() {
     Samplews = new SampleWSService();
     SampleWS port = Samplews.getSampleWSPort();
     System.out.println("multiplication Result= "+ port.multiply(10, 20));
     System.out.println("Addition Result= "+port.sum(10, 20));
    }
   
   }
   

3. Right click on the project and click on Run As -> Java Application. This will result following.

   multiplication Result= 200
   Addition Result= 30
   

Integrating GlassFish with Eclipse 3.7

This post will guide you to integrate GlassFish 3.0.1 with Eclipse 3.7.

1. Download the zip archive for GlassFish from here.
2. Unzip it using the following command.

   unzip glassfish-3.0.1.zip 
   

3. Move GlassFish installation directory to a more suitable place.

   sudo mv glassfishv3 /opt
   

4. Open Eclipse.
   Navigate to New -> Server and click on download additional server adapters link and install Oracle GlassFish server tools. Restart Eclipse, when the installation is finished.
   
   
   After restarting Eclipse, navigate to New -> server.
   
   Select GlassFish Server Open Source Edition 3 (Java EE 6) and click next.
   
   Select a working JRE environment, select the installation path of your Glassfish application server and click next.
   
   In this screen keep the default settings and click next.
   
   In this screen it lets you select existing projects to be added to the newly configured server adapter, just click Finish.
   
   After a successful configuration, server adapter will be appeared in the servers tab. Start the server by right-clicking on it.
   

Command Line parameters - Eclipse

• In Eclipse beside the "Run" button there is a downward arrow. Click on it.

• In the drop-down menu click on "Run Configurations".

• It will open a new window "Run Configurations", there select the required project.
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• Goto "Arguments" tab and inside "Program arguments" text area type command-line parameters separated by a space.
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How to add external jar files in eclipse

1. Inside the "package explorer", Right click on the project which needs to add the external jar file and click on "properties".

2. In "java build path", inside "Libraries" tab choose the external jar file by clicking on "Add external JARs" button and click "OK".