Axis2- Web Service Client

package in.techdive.axis2.samples;

public class AxisWebService
{

    /*
     * This method returns a string containing number of occurrence of each character from the input string. It is case sensitive.
     */
    public String getUniqueCharCount(String s)
    {

        int[] ascArr = new int[123];
        int[] ordArr = new int[s.length()];
        StringBuilder sb = new StringBuilder();
        int k = 0;

        for (int i = 0; i < s.length(); i++)
        {
            char m = s.charAt(i);
            int v = ascArr[m];
            ascArr[m]++;
            if (v == 0)
            {
                ordArr[k] = m;
                k++;
            }
        }

        for (int i = 0; i < ordArr.length && ordArr[i] != 0; i++)
        {
            //System.out.print((char)ordArr[i]+""+ascArr[ordArr[i]]);
            sb.append((char) ordArr[i] + "" + ascArr[ordArr[i]]);
        }

        return sb.toString();
    }
}

<service name="AxisWebService">
   
    <description>
        Simple WebService Demo
    </description>
   
    <parameter name="ServiceClass">in.techdive.axis2.samples.AxisWebService</parameter>
   
    <operation name="getUniqueCharCount">
                <messageReceiver  class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" />
    </operation>

</service>

Note:
1. Create src directory inside the Project Home. Place the AxisWebService.java inside src\in\techdive\axis2\samples directory
2. Place the services.xml inside src\in\techdive\axis2\samples\META-INF directory.

in\techdive\axis2\samples\AxisWebService.class
META-INF\services.xml

import javax.xml.namespace.QName;

import org.apache.axis2.AxisFault;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.rpc.client.RPCServiceClient;
import org.apache.axis2.transport.http.HTTPConstants;
import org.apache.axis2.transport.http.HttpTransportProperties;

public class Axis2Client
{
    //http://localhost:8080/axis2/services/AxisWebService?wsdl

    public static void main(String[] args)
    {
        RPCServiceClient serviceClient = null;;
        try
        {
            serviceClient = new RPCServiceClient();
        }
        catch (AxisFault e1)
        {
            e1.printStackTrace();
        }

        //if the web service to be accessed is authenticated then set the userName and passWord in the below authenticator object
        HttpTransportProperties.Authenticator authenticator = new HttpTransportProperties.Authenticator();
        authenticator.setUsername("<userName>");
        authenticator.setPassword("<passWord>");

        Options options = serviceClient.getOptions();
        options.setProperty(HTTPConstants.AUTHENTICATE, authenticator);

        // Provide the EndPoint Reference available in the wsdl ,<soap12:address> tag.      
        EndpointReference targetEPR = new EndpointReference(
                "http://localhost:8080/axis2/services/AxisWebService.AxisWebServiceHttpSo...");

        //provide the action name available in the wsdl, under <wsdl:operation > tag.
        options.setAction("urn:getUniqueCharCount");
        options.setTo(targetEPR);
        QName opName = new QName("http://samples.axis2.techdive.in",
                "getUniqueCharCount");

        Object[] opSetArgs = new Object[] { "Blackberry" };
        Class[] returnTypes = new Class[] { String.class };

        try
        {
            Object[] response = serviceClient.invokeBlocking(opName, opSetArgs,
                    returnTypes);
            System.out.println(response[0]);
        }
        catch (AxisFault e)
        {
            e.printStackTrace();
        }
    }
}

log4j:WARN No appenders could be found for logger (org.apache.axis2.util.Loader).
log4j:WARN Please initialize the log4j system properly.
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