The simplest method of deploying an Axis2 web service

I think Apache Axis2 is the most effective, efficient and useful open source java web service framework ever written. Not only that, if you are new to Java web services, Axis2 provides a lot of handy tools and mechanisms in order to start exploring WS technology. One of the easiest way of learning Axis2 is start with POJO (Plain old Java objects). You may wonder that you can deploy a java class as an Axis2 service in one line of code!!!
Lets have a look...

1. Write a java class

2. Add following line inside the main method of your class
new AxisServer().deployService(SimplePojo.class.getName());

Make sure to add Axis2 libraries in your class path. (Axis2-1.3 can be downloaded from here)

3. Open your favorite browser and issue http://localhost:6060

4. You will see that your java class is exposed as an web service.

Here is the complete sample code which can be copied to your IDE and play with it.

package org.test;

import org.apache.axis2.AxisFault;
import org.apache.axis2.engine.AxisServer;

public class SimplePojo {

public int addnumbers(int x, int y){
return x+y;
}

public static void main(String[] args)throws AxisFault {
new AxisServer().deployService(SimplePojo.class.getName());
}
}

Comments

Post a Comment

Popular posts from this blog

Working with HTTP multipart requests in soapUI

Image
You can use HTTP request test step in soapUI to submit messages with various Content-Types.  In this post, we will have a quick look into the multipart/form-data requests in soapUI. multipart/form-data requests usually come into action when you do HTML form submissions with file attachments. For example, have a look at the following HTML form post. <form action="http://localhost:8090/CKFileUploadApp/UploadServlet" method="post" enctype="multipart/form-data"> <input type="file" name="file"> <input type="text" name="paramName"> <input type="submit" name="Submit" value="Upload File"> </form> In the forms like above, we have file upload option as a form input where we can upload a file along with the form submission. In that case, the request's HTTP content type will be multipart/form-data. How can we simulate such a request using soapUI
Read more

Common mistakes to avoid in WSO2 ESB - 1 - "org.apache.axis2.AxisFault: The system cannot infer the transport information from the URL"

In the next few weeks, you could expect a series of blog posts from me which explain the remedies to avoid some common mistakes which we do when working with WSO2 ESB . This is the first of many. During the initial rounds of testing your integration solution or even in production systems, you may have come across the following error. org.apache.axis2.AxisFault: The system cannot infer the transport information from the URL .... Some of you may have struggled hours figuring out a solution to address this issue. Let me explain this error in detail and possible causes of this. So, next time when you see this error in your WSO2 ESB setup, you will not have to spend time unnecessarily googling everywhere. There can be many different causes of this error. I have observed  four main reasons. Cause 1 This is the simplest cause. Suppose, you have a proxy service similar to the following. <proxy xmlns="http://ws.apache.org/ns/synapse" name="MistakesTest&q
Read more

How to deploy JSR181 annotated class in Apache Axis2

Image
JAX-WS (Java API for XML Web Services) provides support for annotating Java classes with metadata to indicate that the Java class is a Web service. With the annotations, you can expose java classes as web services with minimum effort. Apache Axis2 ships with JAX-WS support since its 1.4 release. This post explains the simplest possible scenario of JAX-WS support, how you can deploy an annotated class in Axis2. Pre-requisites Apache Axis2-1.4 or later JDK1.5 or above Step 1 Write an annotated class as follows. package org.apache.axis2; import javax.jws.WebMethod; import javax.jws.WebService; @WebService public class Calculator { @WebMethod public double Add(double x, double y){ return x+y; } } Here, the @WebService annotation tells the server runtime to expose all public methods on the above class as a Web service. Also, with the @WebMethod annotation, you can specifically denotes the methods which are exposed in the web service. Step 2 Package the above class as a JAR (
Read more