Echo ws bottom-up method

Following the bottom-up development method wizard we can create a new Web Service in a few moments.

We start from a GreenVulcano^® ESB service "echo" that simply returns the user input as well as is.

Once launched wizard and inserted all parameters, VulCon^® creates the WSDL file that describe our service.

This is the "echo_ws.wsdl" generated:

<?xml version="1.0" encoding="UTF-8"?>

<wsdl:definitions xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://www.greenvulcano.it/greenvulcano"
                  xmlns:gv="http://www.greenvulcano.it/greenvulcano"
                  xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
                  xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
                  xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
                  xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
                  xmlns:soapjms="http://www.w3.org/2010/soapjms/"
                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <wsdl:types>
        <xsd:schema elementFormDefault="qualified"
                    targetNamespace="http://www.greenvulcano.it/greenvulcano"/>
    </wsdl:types>
    <wsdl:message name="echoResponse">
        <wsdl:part element="gv:echoResponse" name="parameters"></wsdl:part>
    </wsdl:message>
    <wsdl:message name="echoRequest">
        <wsdl:part element="gv:echo" name="parameters"></wsdl:part>
    </wsdl:message>
    <wsdl:portType name="echo_wsPortType">
        <wsdl:operation name="echo">
            <wsdl:input message="gv:echoRequest" name="echoRequest"></wsdl:input>
            <wsdl:output message="gv:echoResponse" name="echoResponse"></wsdl:output>
        </wsdl:operation>
    </wsdl:portType>
    <wsdl:binding name="echo_ws_Soap" type="gv:echo_wsPortType">
        <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
        <wsdl:operation name="echo">
            <soap:operation soapAction="echo_ws/echo" style="document"/>
            <wsdl:input name="echoRequest">
                <soap:body use="literal"/>
            </wsdl:input>
            <wsdl:output name="echoResponse">
                <soap:body use="literal"/>
            </wsdl:output>
        </wsdl:operation>
    </wsdl:binding>
    <wsdl:service name="echo_ws">
        <wsdl:port binding="gv:echo_ws_Soap" name="echo_ws_Soap">
            <soap:address location="http://localhost:8080/gvaxis2/services/echo_ws"/>
        </wsdl:port>
    </wsdl:service>
</wsdl:definitions>

VulCon creates also the "echo_ws.aar" that contains the "echo_ws.wsdl" and the "services.xml". This aar will be used by GreenVulcano^® ESB for deploying our new Web Service.

Now we must only insert our generated elements in GreenVulcano^® ESB installation directory:

• Copy the "echo_ws.wsdl" in folder "GreenV/xmlconfig/wsdl".
• Copy the "echo_ws.aar" in folder "GreenV/webservices/services".

Opening the GV Console in the section "Web Service"->"WSDL", we can see in the top area the Web Service description that is present in the "GVAdapter.xml" file. In the bottom area we can see our "echo_ws.wsdl" that is ready to be deployed, just check it and click the "Deploy" button.

Finally we can see our new Web Service in Axis2 console.