Create Web Services using Axis Java2WSDL, WSDL2Java and Eclipse for all Servers manually – Part 2

With all the basic configurations done as specified in the last Article we continue to develop the Business logic.

  1. Create a class named Calculator.java, place four public methods add, subtract, multiply and delete and place the appropriate logics in it.
  2. This is the class that has to be exposed as the Web Service and we write the funky TestRunner.java class to do all out operations like creating WSDL file, creating stub file etc.
  3. Generate WSDL file using Java2WSDL: Axis has a tool called Java2WSDL, which generates a WSDL file for a web service using a Java class. Java2WSDL file takes the following arguments.
    1. o – name for WSDL file -> calculator.wsdl
    2. n – target namespace -> mx:com.itechgenie.services.Calculator
    3. l – url of web service -> http://<host:port>/<Project-Name>/services/calculator

    Summing up the above arguments the following command line arguments is created.

    Read this Article on how to run the command line java tools from Eclipse.
    You can run the Java2WSDL as follows in the TestRunner class. Naah, don’t ask how, just put the following lines the main method and press CTRL + F11.

    The Java2WSDL class has the System.exit(0); method called from inside. So lines after the Java2WSDL will not be executed. To get the other arguments supported you can just run Java2WSDL.main(new String[0]) ;. This will display all the arguments supported by Java2WSDL Utility and this works for other utilities also.
    After running this Utility you will find the calculator.wsdl file created in the root folder of the Project.

  4. Generate Server side and Client side codes using WSDL2Java: WSDL2Java is another tools provided by the AXIS, which can generate server side and client side Java classes using a WSDL file. These classes are needed for deploying the web service and also for accessing the web service using a Java client. This tool expects the following argument which includes the WSDL file generated in the last step.
    1. o – output folder -> src
    2. p – package for generated classes -> mx:com.itechgenie.services. generated
    3. s – generate server side classes as well
    4. *.wsdl – WSDL file of any web service

    Summing up the above arguments the following command line arguments is created.

    Read this Article on how to run the command line java tools from Eclipse.
    Now run the WSDL2Java utility as follows.

    Once the above command is run, Just refresh the project in eclipse, you will find the following files created inside the “com.itechgenie.generated.service” package.

    1. Calculator.java
    2. CalculatorService.java
    3. CalculatorServiceLocator.java
    4. CalculatorSoapBindingImpl.java
    5. CalculatorSoapBindingStub.java
    6. deploy.wsdd
    7. undeploy.wsdd

    The above files can be used in both Server and Clients side as Skeleton (CalculatorSoapBindingImpl.java) and the Stub (CalculatorSoapBindingStub.java) respectively.

  5. Binding the business logic with the Skeleton: Take the Skeleton file and you will find the exact methods that were available in our Business logic class (Calculator.java.).
    Create a instance of the Business class and invoke the appropriate method from the skeleton as follows (Find the lines highlighted in yellow.).

    That’s it; we are now done with the development part of the Web Service. All we have to do is to configure to make the service up and running.
  6. Last configurations to make our service available: Open the server-config.wsdd file inside the WEB-INF folder. You will find the following lines.

    Keep the file aside and open the deploy.wsdd from the WSDL2Java generated files. Copy the <service> … </service> tag completely and paste in between the comments said above.
  7. Conclusion: You can follow the steps 6 to 11 and create as many services as you want and paste them in the server-config.wsdd.
    With this the configurations for the Web Service is over. Export the Project as a War and deploy it in Web Server and point to the URL http://<host:port>/<Project-Name>/services
  8. This URL should display all the services generated from steps 6 to 11 with the links the WSDL files for the above.

    Click here to download the sample project.

Create Web Services using Axis Java2WSDL, WSDL2Java and Eclipse for all Servers manually – Part 1

There a lot of Web Service implementations available in market. The most widely used among them is the Axis way of implementation. There are a lot of Examples available in the web to create expose, consume the Web services using the Axis packages. But it is not feasible to work get the Axis complete packages inside corporate offices all of a sudden and yes I faced the same situation.

After some investment of time I found some funky stuff in web to create a Web Service with just a couple of jars in hand and off-course with the help of Eclipse.

Prerequisites:

  1. Eclipse, any version should be ok, but I was using the Eclipse Indigo with Ant installed in it.
  2. The set of jars needed. Jars are included in the Project sample.
    1. axis.jar
    2. commons-discovery-0.2.jar
    3. commons-logging.jar
    4. jaxrpc.jar
    5. log4j-1.2.15.jar
    6. saaj.jar
    7. wsdl4j.jar
    8. The sample web.xml, server-config.wsdd (These will be used later in the development steps).

Steps to develop Web Services:

  1. Create a Dynamic Web Project “SampleWebService” in Eclipse.
  2. Place the above said jars in the WEB-INF/jars folder.
  3. Open the Web.xml file and copy the following contents into it somewhere between tags. These contents are available in the sample attached.
  4. Copy the server-config.wsdd next to web.xml file. We will reuse this file once again after complete the business logic of the server.
  5. Now the basic configurations are complete, we have to develop the business logic for the Web Service. In my example I have taken the Old school Calculator sample.
    Click here to go to the next Part of this article.

Setup your own Social Networking Websites

There a lot of social networking site available in web which includes the Google Plus, Facebook, Twitter etc. Its public and the open to all. But if you wish to Setup your own Social Networking site that is private and for a closed group you can use one of the following Open source scripts.

1. Elgg: Elgg empowers individuals, groups and institutions to create their own fully-featured social environment. Elgg, started in 2004, is an open source social engine which powers all kinds of social environments – from education and business to martial arts and rugby. If you are looking for a professional social intranet or want to run a site for your organisation, Elgg is a great choice. Click here to download.

2. Dolphin: Dolphin is the world’s most advanced community software. Open-source, independent, downloadable, scalable, customizable, full-featured, free software for building social networks, dating sites and web-communities. Loaded with video chat, recorder, video player, forums, groups, events, video messenger, mailbox, desktop app, video sharing, photo sharing, iPhone app and much more. Build your own business or advance your hobby with Dolphin!. Click here to download Dolphin.

3. Jcow: Jcow makes it easy & interesting to create Social Networks and online communities, Build a member community for your existing website, Build a social networking site like facebook/myspace/twitter. Click here to download JCow.

4. Etano: Etano can be used to start up a dating site, a social networking site, a classifieds site or any other type of site involving groups of people, companies, products. Click here to download.

5. Oxwall: Oxwall is used for a wide range of projects starting from family sites and custom social networks to collaboration tools and enterprise community solutions. Oxwall is unbelievably flexible and easy to use PHP/MySQL community software platform. Click here to download.

6. PeoplePods: PeoplePods is a framework that makes it easier to create community or “social” applications. It provides a flexible infrastructure within which members of a site can create, comment upon, and consume content of arbitrary types. Popular social functionality such as friend lists, personalized content views, bookmarking, and voting are automatically available within any PeoplePods application. PeoplePods can be used to build stand-alone sites, or can be layered onto existing sites such as those run using WordPress or other PHP applications. Click here to download.

7. Beatz: Beatz is a free opensource online social networking community script that allows you to start your own favourite artist band website just like Pure Volume. The script is coded in Php, Mysql and licensed under Creative Commons GPL license. In other words, its an online community script for sharing, discussing and learning about new artists and your favorites. Click here to download.

Open Source Micro blogging applications

Twitter is the most famous Microblogging site used by users all over the world. There are some famous Open source microblogging site available. Following are few among the Open source PHP scripts.

1. StatusNet: Previously Laconica, is the engine which runs the popular microblogging site Identi.ca. You can download the same from here.

2. PageCookery: PageCookery is the first public offering of single-user version of the open source microblogging program, PHP + MySQL based architecture is a set of safety, efficiency and stability, to “share”, “discovery” for the concept of Web 2.0 solutions to micro-blog. Click here to download.

3. JaikuEngine: Jaiku was the microblogging site of Google. However, they decided no longer to develop the code but make it open source under the name JaikuEngine.

4. Sharetronix: Sharetronix is the world’s favorite opensource microblogging platform. Sharetronix enables people to exchange ideas and multimedia in real-time. Click here to download.

5. Storytlr: Storytlr offers a single touch point for your online life in your own style. Easily post anything you find interesting, import your web 2.0 stuff and share your life online. Storytlr is an open source lifestreaming and micro blogging platform. You can use it for a single user or it can act as a host for many people all from the same installation. Click here to download.

6. Jisko: Jisko is a light-weight open-source microblogging system that allows you to stay in contact with the people you want. Click here to Download.

7. WordPress: The WordPress is a popular blogging tool. But the Power of wordpress can be derived to work as a Microblogging application with the help of a simple theme. P2 WordPress Theme converts the Powerful WordPress into a Microblogging tool. Click here to download.

8. Yonkly: Yonkly Open Source twitter-clone and microblogging platform developed on the asp.net mvc framework. It is the famous Open Source app available in the Dot Net side other than the PHP scripts. Click here to Download.