JAX-WS Servlet Endpoint

The basic steps to write a Servlet end point approach is:

• Write a POJO class
• Annotate it
• Configure in web.xml
• Build and deploy.
• WSDL file is generated automatically

Make a webapplication/ In eclipse you can make a project which is a dynamic web project.Let's write a POJO bean class which can be invoked by sending a SOAP Request which contains a string and it will return the response "Hello World" + input String.

POJO class:

@WebService
@SOAPBinding(style=SOAPBinding.Style.RPC)
public class HelloBean{

@WebMethod
public String hello(String name){
   return "Hello " + name;
  }
}

Note the annotation on the bean class. The class does not implements any interface.
Register this bean as a servlet in the web,xml

<servlet>
      <servlet-name>helloBean</servlet-name>
      <servlet-class>com.oyeJava.HelloBean</servlet-class>

  </servlet>
  <servlet-mapping>
      <servlet-name>helloBean</servlet-name>
      <url-pattern>/hello</url-pattern>
  </servlet-mapping>

Deploy the war in your server and hit the service at:

http://<hostname>/JAX_WS_HelloWorld/hello?wsdl

Please change the host name with your host name and JAX_WS_HelloWorld with your application context.
You can also follow the video:

This will show the wsdl generated:

<definitions name="HelloBeanService" targetNamespace="http://crayom.com/">
//As there are no types so nothing is here
<types/>

//Message denote the payload that travels on wire for request and response.
//At this level we do not distinguish whether it's a request or response
<message name="HelloBean_hello">
   <part name="arg0" type="xsd:string"/>
</message>
<message name="HelloBean_helloResponse">
   <part name="return" type="xsd:string"/>
</message>

//Represents the Bean and the operation.
//Also messages are designated as request and response here
<portType name="HelloBean">
   <operation name="hello" parameterOrder="arg0">
      <input message="tns:HelloBean_hello"/>
      <output message="tns:HelloBean_helloResponse"/>
   </operation>
</portType>

//binding to SOAP over HTTP
<binding name="HelloBeanBinding" type="tns:HelloBean">
   <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
      <operation name="hello">
        <soap:operation soapAction=""/>
           <input>
             <soap:body namespace="http://crayom.com/" use="literal"/>
           </input>
           <output>
             <soap:body namespace="http://crayom.com/" use="literal"/>
           </output>
      </operation>
</binding>

//Service location
<service name="HelloBeanService">
  <port binding="tns:HelloBeanBinding" name="HelloBeanPort">
  <soap:address location="http://127.0.0.1:8080/JAX_WS_HelloWorld/hello"/>
  </port>
</service>

</definitions>

Let's hit the service with soapUI. The SOAP request will look like:

<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:cray="http://crayom.com/">
   <soapenv:Header/>
   <soapenv:Body>
      <cray:hello>
         <arg0>?</arg0>
      </cray:hello>
   </soapenv:Body>
</soapenv:Envelope>

In place ? if you put oye Java the SOAP response you will get is

<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
   <env:Header/>
   <env:Body>
      <cray:helloResponse xmlns:cray="http://crayom.com/">
         <return>Hello Oye Java</return>
      </cray:helloResponse>
   </env:Body>
</env:Envelope>