WebServices Learning Help

Hello Everyone,
I want to start learning WebServices ( I know Servlets, JSP and EJB). Do I have to know XML? Can someone guide me how to get started, the books I should use.
Thanks in advance

This is not necessarily an overview of webservices but it will give you something to look into.
Java Web Services
http://java.sun.com/webservices/index.jsp
White papers on JAXRPC
Part 1 is available at https://jax-rpc.dev.java.net/whitepaper/1.1/index-part1.html and Part 2 is available at https://jax-rpc.dev.java.net/whitepaper/1.1/index-part2.html.

Similar Messages

How to use a WSDL file to call webservice? Help!

Hi Experts,
     I have exposed a SAP function module as webservice using the
     Utilities -> More Utilities -> Create Web Service -> From Function module
     What does this step actually does? Does it create some kind of web application like BSP for the function module in the background?
     After creating the web service I have released the service definition for the SOAP runtime using the transaction WSCONFIG.
    Finally I have generated the WDSL file ofr the webservice using WSADMIN transaction.
    After this how will my third party application like Java will use the WSDL? Will I need any connector software to be installed in Java side.
    How exactly will java call my webservice using WSDL?
    What actually happens or what is the message flow when java application calls by webservice?
    Kindly help.
Thanks
Gopal

Hi, Your solution should be correct and it's a quite common approach for Login authentication.Informatica's webservice provider also need 2 steps for calling its webservice1. Getting the session ID using username and password 2. Use the session ID to call any active operation 3. Use the session ID to log out if webservice do not have any time out settings for each session. SOAP standard is listed in the WSDL of saleforce webservice. It affects if you cannot find/call any operation in PowerCenter level. My lastest information is for PWC 9.1 version only, I don't know if they have enhanced this function in 9.5. If you can call the operation, you can just put it (SOAP standard) way first. Regards,Felix

DateTime class in a webservice. please help

Hi All.
I can't figure out wich class type to use to publish a dateTime in a webservice.
I have an ejb 3.0 entity bean generated with the jdeveloper wizard mapped to a Oracle 9i table. This table have some DateTime field, wich generates properties of type java.sql.Timestamp.
To use this entity, I have the ejb 3.0 facade session bean with a method defined similar to the following:
@WebMethod
public String storeMyEntity(MyEntity ent);
I am able to create the client (Web and standalone) application and store data in all field. Nevertheless, the WSDL generated by the webservice don't show the datetime fields.
I've tried using oracle.sql.datetime and the field appears, but this is useless in a heterogenous environment (consuming the webservice from a Delphi client for example)
Appreciate your help very much.

wrong group???
no one ever publish a dateTime in a webservice with EBJ 3.0 and annotations???
please some tip. Thanks
Marko.

SAP BI - New Learner - Help Required

Dear Friends
I have started learning SAP - BI from a local traning center. I would appreciate if you all could guide me on where I should start my learning from? What training materials that I need to look into? what is the time i need to spend to complete the module so that i can start applying for jobs? Any information that would help a new starter to get ready to apply for a job in 6 to 8 months time.
Your help will be highly appreciated.
Regards
Have a nice day!!!
Sudarshan Balakrishnan

Hi ,
Welcome to SDN ....
You can follow schedule what even SAP Suggests like order is.....
1. Basis of BW ( InfoObjects ,Cubes etc..)
2. Reporting.
3. Extraction.
4. Data Modeling ( Star Schema...etc)
5. Authorization.
6. Performance Tuning..
Regards,
Vijay.
Message was edited by: vijay Kumar
And Help.sap.com will sure help u a lot as u can find solution to all ur problems there as beginer , if not u can always post at SDN.

SAP-XI System Installation and Learning help

Hi!!,
I'm working as "ABAPer" from last 5 years. Recently I installed Miniwas 620(ABAP) from a CD I got through by SAP book purchase. I'm able to do a lot ABAP things in my system.
Now I'm planning to Upgrade my knowledge to XI. I studied lot of material in SDN(thanks!! to all the contributors). I have fair knowledge of XI functionality and each component. Now I think I should be sitting in front of system to play around and learn. I thought of using my system. I have following queries on this.
1. Does my system has XI components?. I'm able to get into
XI based Easy access menu, but If i click on any node for example 'start integration builder' I get a message 'address not maintained'. I'm not sure How do I install or configure all the components. Can any one help in this.
2. If I can not install in my system, what is the best way to learn XI.
3. In real time projects, what is the role of a XI-consultant and XI-developer( I'm seeing two kind of certifications in SAP site ). I just wanted to know to analyze where do I fit in.
4. Any good training around, Problem with SAP training is they do not have one course with full XI.
5. Any idea how is SAP's Online-course material?, Is it read only or interactive?. how it looks like?. Is paying $500 for each course is worth or not?
I really appreciates your Inputs on each of queries.
Thanks!!
Prit

1. Does my system has XI components?. I'm able to get into
XI based Easy access menu, but If i click on any node for example 'start integration builder' I get a message 'address not maintained'. I'm not sure How do I install or configure all the components. Can any one help in this.
Nope, you do not have XI components. XI 3.0 runs on Web AS 6.40 ABAP + Java Stack. One more thing.. There is no sneak preview for XI and no free downloads.
2. If I can not install in my system, what is the best way to learn XI.
Through Training either from SAP or some third party companies.
3. In real time projects, what is the role of a XI-consultant and XI-developer( I'm seeing two kind of certifications in SAP site ). I just wanted to know to analyze where do I fit in.
The role of XI Developer is to get the requirements of Source and Target systems, creating the maps, developing BPM (Business Process Management) where needed, development of custom adapter modules etc.
The Certifications are 1. Basis 2. XI Developer
TBIT 40, 50 and 51 are for Basis and
TBIT 40, 41, 42, 43, 44 are Developers
4. Any good training around, Problem with SAP training is they do not have one course with full XI.
Heard some third party people are giving training, some of our forum members may know about it and if you provide a contact mail id they might get in touch with you.
5. Any idea how is SAP's Online-course material?, Is it read only or interactive?. how it looks like?. Is paying $500 for each course is worth or not?
It is the price you pay to learn, if there are cheaper ways you can always explore.
I tried to answer as much as I can, other forum members might come up with good suggestions.
Good luck.
regards
Shravan

Hi guru's i am learning help me

hi guru's i am learning ALE/IDOCS why we use this topic explain to me like real time why we use idocs concept plz help me

Hi,
Check the following links:
http://sapmaterial.com/alematerial.html
http://sapmaterial.com/idoc_sample.html
http://sap.niraj.tripod.com/id51.html
http://www.sapbrainsonline.com/TUTORIALS/TECHNICAL/IDOC_tutorial.html
http://www.sapbrainsonline.com/TUTORIALS/TECHNICAL/ALE_tutorial.html
Regards,
Bhaskar

Google WebService SOAP Help

Hello,
has anybody been able to get the Google WebService example working (access to external services) in EP6?
I get weird errors from PROXY settings or XML response format exceptions depending on proxy settings.
I have no need for proxy but direct connection and can perfectly read a Google URL from within my component.
Environment is EP6 SP2 Patch 3 + Eclipse 2.1.3.
I am also facing a problem with NetWeaver Developer Studio 2.0.5 not generating soap proxies correctly (it adds method calls to retrieve cookies from the soap response; these methods are not implemented in the interface).
I have developed my own soap service on an EP6 and a client running on another EP6 and this works perfectly. Still no way to access Google.
Obviously I have my own account key in google to access the api and I can make it work outside EP6.
Something to do with http chunking?
PLEASE HELP !

Exception
com.inqmy.lib.xml.parser.ParserException: XMLParser: No data allowed here:51a (:main:, row:1, col:3)
 at com.inqmy.lib.xml.parser.XMLParser.scanProlog(XMLParser.java:2467)
 at com.inqmy.lib.xml.parser.XMLParser.scanDocument(XMLParser.java:2505)
 at com.inqmy.lib.xml.parser.XMLParser.parse0(XMLParser.java:151)
 at com.inqmy.lib.xml.parser.AbstractXMLParser.parseAndCatchException(AbstractXMLParser.java:110)
 at com.inqmy.lib.xml.parser.AbstractXMLParser.parse(AbstractXMLParser.java:127)
 at com.inqmy.lib.xml.parser.AbstractXMLParser.parse(AbstractXMLParser.java:195)
 at com.inqmy.lib.xml.parser.DOMParser.parse(DOMParser.java:90)
 at com.inqmy.lib.xml.parser.DOMParser.parse(DOMParser.java:142)
 at com.inqmy.lib.jaxm.soap.SOAPPartImpl.parseDocument(SOAPPartImpl.java:60)
 at com.inqmy.lib.jaxm.soap.SOAPPartImpl.setContent(SOAPPartImpl.java:220)
 at com.inqmy.lib.jaxm.soap.SOAPMessageImpl.<init>(SOAPMessageImpl.java:76)
 at com.inqmy.lib.jaxm.soap.MessageFactoryImpl.createMessage(MessageFactoryImpl.java:40)
 at com.inqmy.lib.jaxm.soap.SOAPConnectionImpl.call(SOAPConnectionImpl.java:160)
 at com.sapportals.portal.prt.service.soap.SOAPService.call(SOAPService.java:149)
 at com.sapportals.portal.prt.service.soap.PRTSOAPCall.invokeMethod(PRTSOAPCall.java:209)
 at com.whr.google.client.GoogleSearch.doGoogleSearch(GoogleSearch.java:321)
 at com.whr.google.client.Google.doContent(Google.java:49)
 at .............

Jdeveloper webservice authentication - HELP!

Hi
ok, this is the situation: I developed a java webservice that i installed in aplication server 10g. It's working fine without authentication! What I need is to force anyone that tries to access the web service to authenticate himself against OID.
I tried a lot of things that worked throw a web browser but they don't work throw a client stub! My goal is when the clent stub tries to access the web service, some kind of authentication mechanism is fired. I need some help urgent on how to secure my web service in AS10g.
What do I need to do from the client side and from the server side? I read the Oracle Application Server web services documentation but the only thing that it states is that it is possible to secure but it doesn't say how!
Please someone respond! I'm using JDeveloper 90501 and AS 10g, my client stub accesses by SOAP.
Thanks in advanced
Vitor Cardoso

Victor,
there's a way doing it, but NOT against OID per default - you can use as a first step basic auth from your webservice stub, and do the rest programmaticly from you stub by calling a login method for example that does authentication on the server;
For basic authentication, there's an article on my weblog
http://clemensblog.blogspot.com/2004_05_01_clemensblog_archive.html - that points to a detailed howto.
hth clemens

Forward Proxy Authentication SAP Webservice Framework HELP!

Hi,
i have built as WS Client using the SAP Standalone Proxy. The client will utilize a forward proxy to access my Webservice. Unfortunately the documentation does only give information how to set the proxy address and port:
port._setProperty"javax.xml.rpc.http.proxyhost","proxy");
port._setProperty("javax.xml.rpc.http.proxyport","8080");
The is no hint how to set a proxy user and password? Does anybody know the answer to my question here?
Cheers,
Heiko

Hi Heiko,
Get SecurityProtocol as described <a href="http://help.sap.com/saphelp_nw04/helpdata/en/ab/c955e2e2d24a888127f211f2d5043f/frameset.htm">here</a> .
Use methid public void addHeader(String key, String value) to add HTTP header:
String authString = "username" + ":" + "password";
String auth = "Basic " + new sun.misc.BASE64Encoder().encode(authString.getBytes());
securityProtocol.addHeader("Proxy-Authorization", auth);
Best regards, Maksim Rashchynski.

Hi guru's learning help me

hi guru's in internal table how i can delete 3 ,15 ,21(index) in the table help me plz.

Hi,
delete table itab index 3.
delete table itab index 15.
delete table itab index 21.
for your scenario this is the way or if you know want to delete common MATNR like (112,101,112) You can give like
delete table itab where matnr = '112'. it will delete rows having matnr 112
i think this would help you...
regards,
karthik

MACHINE LEARNING HELP!!

Hi there,
i wonder if anyone could point me in the right direction. I'm trying to use the MLT but I'm not quite sure how to go about getting what I want. Basically when I take in a signal I want to use the MLT to recognise the signal that's coming in and whether it is more like A or B.
At first i was looking into k-means and density estimation but now I am thinking kNN. But I have no idea of how to even go about this with LabVIEW. Looking at the toolkit I've also doscovered Spectral Clustering. Would this be better? iIve tried messing around with the toolkit but I'm getting no results. As I said, any help would be greatly appreciated!
Kind Regards,
KelOb

Hi Matt,
Brilliant, thank you and many thanks for your reply it is greatly appreciated. I have looked at the page a few times yes and researched all methods. As far as I can see k-means and clustering the data may be the best for me. however when I use the vi's in the toolkit, even though i get a reading, it is messy. Realistically I would like a class 0 (red) to represent a 'no event' in my sensor and a class 1 (green) to represent an event. and to cluster the events depending on strngth (they are seismic signals). I have attached a screenshot of the XY graph I have so far.
Any help at all is appreciated as I can't see where I'm going wrong.
Kindest Regards,
Kelly
Attachments:
Screenshot 2014-01-24 11.00.59.png ‏279 KB

Old Lady trying to learn, Help please!

Hello from this newbie! At 57 I have returned to college. I really am trying to understand Java.
Below is the problem I need to answer, and my code. Can someone please explain what I am doing wrong in plain english, and give suggestions to fix it? I don't want anyone to do the code, but explain what code I need, where, and why.
Thanks in advance of replies...
The assignment states...
"Your worker class will handle both Fahrenheit to Celsius and Celsius to Fahrenheit. Your application class will read in a single value and perform both calculations on that value and output both results. Please use JOptionPane methods for input and output."
//My First Class
//   MAIN
import javax.swing.JOptionPane;
public class ConversionApp
//      METHODS
     private void convertCelciusToFarenheit(double){
     private void convertFarenheitToCelcius(double){
     public static void( String[] args);
     String input = JOptionPane.showInputDialog(null, "Enter which temperature you wish to convert using C or F:");
    String degrees = Double.parseDouble(input);
    if(degrees.equals("C"));
    String input1 = JOptionPane.showInputDialog(null, "Enter Temperature in Celsius to convert:");
    if(degrees.equals("F"));
    String input2 = JOptionPane.showInputDialog(null, "Enter Temperature in Fahrenheit to convert:");
     String FtoC;
     public static double convert(String farenheit){
         double temp = Double.parseDouble( farenheit);
         return ( double ) ( 5.0 / 9.0 * ( temp - 32 ) );
         JOptionPane.showMessageDialog( null, FtoC + " degress Farenheit is " + result + " degrees Celcius",
                 "Conversion Results", JOptionPane.INFORMATION_MESSAGE );
     public int CtoF;
    public static double convert(String celsius){
        double temp = Double.parseDouble( celsius);
        return ( double ) ( temp * 9.0 / 5.0 ) + 32 ;
        JOptionPane.showMessageDialog( null, CtoF + " degress Celcius is the same as " + " result " +
        "degrees Farenheit", "Conversion Results", JOptionPane.INFORMATION_MESSAGE );
// My Second Class...
public ConversionWorker {
String FtoC;
     public static double convert(String farenheit){
         double temp = Double.parseDouble( farenheit);
         return ( double ) ( 5.0 / 9.0 * ( temp - 32 ) );
     public int CtoF;
    public static double convert(String celsius){
        double temp = Double.parseDouble( celsius);
        return ( double ) ( temp * 9.0 / 5.0 ) + 32 ;
}

>private void convertCelciusToFarenheit(double){
     private void convertFarenheitToCelcius(double){
Ok, in here I think you want something like:
public void convertCelciusToFarenheit(double degree)That way, you can then use the number passed as a parameter (degree) in that method, and do math on it. And you need to fix this:
>     public static void main( String[] args)In the future, post exactly what errors you are getting.

Help needed to work with wbservices

Hi ,
I'm in urgent need to develop webservices in
Webdynpro . I have seen help docs but could get full out of it . Can any one help me in this issue.
thanks in advance,
Ravi Shankar.

Hi Venkat,
Please go through this blog on <a href="/people/siva.maranani/blog/2005/09/03/invoke-webservices-using-sapxi Webservices using SAPXI</a> and see if it helps you......Follow the blog and do it step by step and see if it helps you.The blog explains the same Scenario that you are trying.
Also go through these links and they will surely help you learn more about Webservices:
<a href="/people/siva.maranani/blog/2005/05/23/communication-between-sap-system-webservice-using-proxies between SAP System & Webservice Using Proxies</a>
You can Go through these links to get some info about accessing Webservices:
http://help.sap.com/saphelp_nw04/helpdata/en/d6/f9bc3d52f39d33e10000000a11405a/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/b7/d7baaf1481a349ab723e3acd7334b3/content.htm
The following weblogs will explain you about the integration of webdypro with XI.
<a href="http:///people/saravanakumar.kuppusamy2/blog/2005/02/07/interfacing-to-xi-from-webdynpro">Interfacing to XI from Webdynpro</a>
<a href="/people/sap.user72/blog/2005/09/15/connecting-to-xi-server-from-web-dynpro">Connecting to XI server from Web Dynpro</a>
Also please refer to the link below:
https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/1334">EP-XI [original link is broken] [original link is broken]
It is an Excellent Blog on EP-XI Integration using Web Services and Web Dynpro MVC.
Regards,
Abhy

Webservice Maintenance

Web service
A service will be registered in Webservice by a service provider.
The client will search for the Service in Webservice and will get the info about the Server where the service he wants is placed and then he will contact the appropriate server.
My question is who will maintain the Webservice? In what language a Webservice will be maintained?
Thanks.

Hi Jenni,
Just go through these links and they will surely help you learn more about Webservices:
<a href="/people/siva.maranani/blog/2005/09/03/invoke-webservices-using-sapxi Webservices using SAPXI</a>
<a href="/people/siva.maranani/blog/2005/05/23/communication-between-sap-system-webservice-using-proxies between SAP System & Webservice Using Proxies</a>
You can Go through these links to get some info about accessing Webservices:
http://help.sap.com/saphelp_nw04/helpdata/en/d6/f9bc3d52f39d33e10000000a11405a/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/b7/d7baaf1481a349ab723e3acd7334b3/content.htm
Now if you want to know how you you can expose an RFC as a webservice.... The info below will help you........
If you're on WAS 6.20 and up, you can expose an RFC as a webservice directly from WAS.
Or if youre on Basis layer 4.6D, you'll need to use XI (or some other integration tool) to expose the RFC as a webservice.
To do this in XI you'll need to:
Integration Repository
1) Import the RFC
2) Define a message and datatype for the SOAP interface
3) Create inbound and outbound interfaces
4) Create maps between the RFC and SOAP messages
5) Create an interface map
Integration Directory
1) Create an RFC Receiver Channel
2) Create a SOAP Sender Channel
3) Generate the WSDL (Tools->Define Web Service)
You can then handoff the WSDL and a login username and password to your developer and they will have everything they need to make the WS call.
Here are answers to a few doubts u might have:
1) Do I need to actually create a WS that calls the RFC ? Isnt the virtual interface exposed by the XI sufficient?
Yes, you need to create a WS in XI that calls the RFC.
2) If I really have to create the WS and deploy it in order to expose it with the XI, then what is my benefit of exposing it with the XI, why not just exposing it as a normal WS ?
You don't have WAS 6.20 or up. Even if you did, you may still want to expose it using XI in order to have all of your integration go through the same application.
3) If I expose my web service through the XI, how does the client application executes one of its methods? To which url does it have to access (the XI or the actual WS)?
You expose a SOAP interface in XI by generating a WSDL file. This file contains all of the information a developer will need to call the webservice including the URL.
You actually specify the URL when you generate the WSDL. Be sure to read the documentation to get the correct format because the URL that the wizard suggests isn't correct.
I hope it helps answer your question.
Regards,
Abhy

Basic Authentification WebService

Hallo,
i´m trying to call a webservice in xi without authentification. Direct call on the abap-stack doesn´t work (Port 8000); by using a soap-communication channel (send) there are same problem. It is possible doing this without authentification?
Thanks in advance,
Frank

Hi Frank,
Please go through this blog on <a href="/people/siva.maranani/blog/2005/09/03/invoke-webservices-using-sapxi Webservices using SAPXI</a> and see if it helps you......Probably you can compare what you have done with what is given in the blog step by step and see if it helps you.The blog explains the same Scenario that you are trying.
Also go through these links and they will surely help you learn more about Webservices:
<a href="/people/siva.maranani/blog/2005/05/23/communication-between-sap-system-webservice-using-proxies between SAP System & Webservice Using Proxies</a>
You can Go through these links to get some info about accessing Webservices:
http://help.sap.com/saphelp_nw04/helpdata/en/d6/f9bc3d52f39d33e10000000a11405a/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/b7/d7baaf1481a349ab723e3acd7334b3/content.htm
Regards,
abhy

WebServices Learning Help

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