Creating a Web service

[Former Member]

Hi,

I have a web dynpro application that can access an external database via EJB. I also have a web module (JSP). In the web dynpro application there is a button that calls a webpage from my web module.

Supposedly, when I click the button, the values in webpage will be taken from my external database (e.g. the text values of my webpage will come from my database).

I have been told to create a web service using my EJB and have to import that web service to my web module using a java class. Can someone point me to a tutorial on how to do this?

[former_member751941]

Hi mlsaldua,

Please go through this link.

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/302e7c42-2b08-2d10-539f-8a87cbf97...

Thanks and Regards,

Mithu

[Former Member]

Hi Mithu,

I have already created my EJBs. I've also created the web service. My problem now is how to consume the web service using java class.

Thanks

[junwu]

if you want to call that ejb in web dynpro , you can create ejb model.

if you want to call ejb in web module, it is quit standard, pure java programming.

why you have to get web service involved?

[Former Member]

Hi John Wu,

I need web service because my project requires it. It would really be easy just to call ejb using models but I can't do that.

And you're right, I will be needing pure java programming. I've already created my stubs using wsimport of my wsdl. But now I can't incorporate it on my NWDS web module.

[former_member751941]

Hi mlsaldua,

please check this code

public class WsClnt2 {

static final String userid = "test";

static final String password = "init2you";

static String soapRequestMsg = "<ns1:MaterialGetDetail

xmlns:ns1='urn:sap-com:document:sap:soap:functions:mc-style'><Material>R-1111</Material><Plant>1200</Plant><Valuationarea>1200</Valuationarea></ns1:MaterialGetDetail>"

;

static class TheAuthenticator extends Authenticator {

public PasswordAuthentication getPasswordAuthentication() {

return (new PasswordAuthentication(userid,

password.toCharArray()));

}

}

public static void main(String[] args) {

try{

String url =

"

http://host:port/sap/bc/srt/rfc/sap/ZWS_MATERIAL_DETAIL?sap-client=800

";

Authenticator.setDefault(new TheAuthenticator());

MessageFactory msgf = MessageFactory.newInstance();

SOAPMessage msg = msgf.createMessage();

SOAPBody body =

msg.getSOAPPart().getEnvelope().getBody();

DocumentBuilderFactory dbf =

DocumentBuilderFactory.newInstance();

dbf.setNamespaceAware(true);

DocumentBuilder db = dbf.newDocumentBuilder();

ByteArrayInputStream bis=new

ByteArrayInputStream(soapRequestMsg.getBytes());

org.w3c.dom.Document doc = db.parse(bis);

body.addDocument(doc);

SOAPConnection connection =

SOAPConnectionFactory.newInstance().createConnection();

SOAPMessage reply = connection.call(msg, url);

reply.writeTo(System.out);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

<classpath>

<classpathentry kind="src" path=""/>

<classpathentry kind="con"

path="org.eclipse.jdt.launching.JRE_CONTAINER"/>

<classpathentry kind="lib" path="C:/SAAJ/saaj-api.jar"/>

<classpathentry kind="lib" path="C:/SAAJ/saaj-impl.jar"/>

<classpathentry kind="lib" path="C:/bi_sdk/lib/activation.jar"/>

<classpathentry kind="lib" path="C:/SAAJ/New

Folder/xercesImpl-1.5.jar"/>

<classpathentry kind="lib" path="C:/SAAJ/xerces.jar"/>

<classpathentry kind="lib" path="C:/SAAJ/xmlpublic-2.0.0.jar"/>

<classpathentry kind="lib" path="C:/SAAJ/jaxb-xalan-1.5.jar"/>

<classpathentry kind="lib" path="C:/SAAJ/jaxws-api-2.1-1.jar"/>

<classpathentry kind="lib" path="C:/SAAJ/jaxb-api-1.5.jar"/>

<classpathentry kind="lib" path="C:/jdk1.5.0_12/jre/lib/rt.jar"/>

<classpathentry kind="output" path=""/>

</classpath>

Thanks and Regards,

Mithu

[Former Member]

Hi,

Search for EJB webservice in NWDS help.

There is step by step guide there.

Regards,

Himanshu