What is web services in Java?

i have searched Google with the word of "web services".I could only find out some general information about web services but not specific.
Could you please explain me briefly?

makpandian wrote:
It describes about web services in common .I want to know what web service is in java platform..
Thanking You.That is a slightly odd question.
There's nothing special about web services in Java against web services in any other language...there are, after all, several web service frameworks in Java, so it's not as if there's even a single answer to it.
Do you understand what a web service is and the associated standards around one? If you do then you should realise that your question doesn't make much sense...unless you're actually asking what ws packages there are around.

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How to access .asmx Web Service using JAVA? Newbie

Hello Experts,
Currently, I have a project where in I have to access a ,NET web service. It is made of C#. I just want to ask how will I start the accessing process? I made this simple equation on how my project is.
Java Project + C#.Net Web Service = Integration
1. Do i need to create a Web Service too for the Java Project? If yes, What are the necessary tools needed for the creation of this Java Web Service?
2. The .NET Web Service is available online. (It is made by other people).
3. Based on the equation, what is the equivalent technology for the + sign?
4. Can you site a concrete example for accessing a web service?
5. I'm new here. Totally I have no idea where to start.
6. Thank you experts.
Edited by: Benedict.Aluan on 05 30, 08 1:38 PM
Edited by: Benedict.Aluan on 05 30, 08 1:39 PM

Hello
Thanks a lot for your help ...
I am developing simple J2EE based web service client using IBM WSAD 5.1. I have used the following code to call .asmx web service in Java
String url = "http://www.w3schools.com/webservices/tempconvert.asmx?wsdl";
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Invalid Address "http://www.w3schools.com/webservices/tempconvert.asmx?wsdl"I have also tried this URL with Java Proxy. But it showing the same error.
Plz can u tell me how to access .asmx web service ?
Waiting 4 reply.

How to consume the Abap web service in Java web-dynpro

Hi Everyone,
I want to consume ABAP web service in java web dynpro.
so when i tried to create model in java web-dynpro, it gave me an error message saying "Invalid WSDL or WSDL not found".
i think this error message is because, to access the WSDL of abap web-service, we need username and password, but the dialog box in java web-dynpro is not programmed to take username and password from us and send it to the server to get the WSDL.
i came to this conclusion because i was able to successfully test my abap web-service in java portal. the java portal asked me the username and password to open the WSDL.
So, please help me to consume the abap web service in java web-dynpro.
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Regards
Vikas

Hi Vikas ,
while creating a model in web-dynpro try to use the "import web service model" option and if you are using local server choose the local server option so that you can get the available web services which are in server, select one among them and continue you process.I think this is the some what easy way .
If you want use the URL for wsdl better to once test the available service in server and copy that WSDL URL and paste over WSDL textbox.
I think this is pretty help ful to you
Best Regards
Srikatnh

Creating Web Services using Java Implementation

Hi,
This is quite a general question on how to create a Web Service using Java Implementation that needs to conform to a client XML schema.
Here are my Version specs,
I am using Jdeveloper 10.1.3.4.0 and deploying onto OAS 10.1.3.
I will be creating a J2ee 1.4 (JAX-RPC) Web Service using Document/Wrapped style.
I have been provided an XML schema from the client which is quite complex.
Using a top-down approach, I can create my WSDL file and import the XML Schema for my type definitions.
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XML response from the web service must conform to the element, attribute definitions in the provided XML schema.
From a Java implementation approach, what is the best (simplest or quickest) way to retrieve data from the Oracle
tables and map each fields/column to the required XML output (defined in the XML schema).
I'm not too concerned with using Java to retrieve data from the Database, more with how I can map the data returned
to the required output. Can this mapping task be controlled within the Java program?
Thanks in advance.

Hi,
This is quite a general question on how to create a Web Service using Java Implementation that needs to conform to a client XML schema.
Here are my Version specs,
I am using Jdeveloper 10.1.3.4.0 and deploying onto OAS 10.1.3.
I will be creating a J2ee 1.4 (JAX-RPC) Web Service using Document/Wrapped style.
I have been provided an XML schema from the client which is quite complex.
Using a top-down approach, I can create my WSDL file and import the XML Schema for my type definitions.
The Web service aim is to accept some parameters and return some data from the Oracle Database. The
XML response from the web service must conform to the element, attribute definitions in the provided XML schema.
From a Java implementation approach, what is the best (simplest or quickest) way to retrieve data from the Oracle
tables and map each fields/column to the required XML output (defined in the XML schema).
I'm not too concerned with using Java to retrieve data from the Database, more with how I can map the data returned
to the required output. Can this mapping task be controlled within the Java program?
Thanks in advance.

Binding xml from web service to java objects

I would appreciate if someone can tell me where can i get information regarding
binding of xml from web service to java objects in weblogic 6.1 .
Thanks,
ag

Hi Ag,
To my knowledge, the only information on this topic is whatever you find in the
documentation. What exactly do you want to know?
Can you post a set of specific questions?
Regards,
Mike Wooten
"ag" <[email protected]> wrote:
>
I would appreciate if someone can tell me where can i get information
regarding
binding of xml from web service to java objects in weblogic 6.1 .
Thanks,
ag

Web Service in java HELP!!!!

Hi everyone,
i'm new in web services and i have to make a web service in java that it will accept an xml file from a client. The client will have to connect with the server in a particular port and ,through the web service, the client will have to send the xml file. Firts of all, i would like to ask if it 's something difficult to be done. Secondly i would appreciate if someone gave me a guideline about how to start the implementation of the web service.
Thanks in advance. :)

Kayaman wrote:
993033 wrote:
Thanks for the reply !I have read a lot of things about web service. i m reading about a week now for web services :)Well, you probably won't be able to do it with just a week of reading.Maybe a "hello world" type of webservice producer + consumer, if you know Java and web environments properly. JAX-RS is a bit easier in my opinion though, its a very well-defined API and I had a setup between Java and Ruby on Rails running in an afternoon. If you take the time to read and understand the material first of course. Especially the understanding part is what people tend to want to skip over.
We can't just "give a hint" and you'll be magically able to write a webservice. Programming doesn't really work that way.Indeed, and software engineering works even less like that. It happens to be bloody hard.

Discovery web services in java uddi registry via php-pear

I have published my web service in java uddi registry and I want to discovery this web services via php-pear.
The pear code has not the setting about this uddi registry. The pear code for IBM and Microsoft registries are:
'IBM' =>
array(
'Inquiry' =>
array(
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'port' => 80),
'Publish' =>
array('url' => 'https://www-3.ibm.com/services/uddi/testregistry/protect/publishapi',
'port' => 443)),
'Microsoft' =>
array(
'Inquiry' =>
array(
'url' => 'test.uddi.microsoft.com/inquire',
'port' => 80),
'Publish' =>
array(
'url' => 'https://test.uddi.microsoft.com/publish',
'port' => 443))*/);
I add the code below for java registry but the code don't work.
'JAVA' =>
array(
'Inquiry' =>
array(
'url' => 'localhost/soar/registry/soap',
'port' => 8080),
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array('url' => 'http://localhost/soar/registry/soap',
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at org.freebxml.omar.common.BindingUtility.getRequestObject(BindingUtility.java:355)
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Can anyone help meeeeeeeeeeeee?
Message was edited by:
paixtis

Hello
It means what it sais, your J2EE_ADMIN user doesn't have enough authorization.
Chech if the appropriate authorization is assigned in your abap stack which belongs to the java stack you logon to:
Role SAP_J2EE_ADMIN should be assigned to user J2EE_ADMIN.
Kind regards
Tom
Edited by: Tom Cenens on Dec 17, 2010 2:55 PM

Preparations to learn Web Services with Java

I have only worked with JSP,JDBC, JavaBeans and Servlets in Tomcat using MVC architecture the past couple years. I have never used Struts framework. I am thinking about taking a Web Services with Java course and was wondering if my background will be enough to keep up with the advance topic of Java web service?

Yes, at first you should have to worry about understanding the basic concepts, WSDL, and a little bit of XML (it does not make very senso to study far too much because sometimes you won't use all the api you may study).
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JAX-WS is a very powerful toolkit that covers well all the possible approaches you may have.
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There is a very good book about written by Mark Hansen.
Check out also that there are so many franmeworks around that implements the specification: almost every Corp. implements its own stack.... Sun, Apache, Spring, IBM, JBOSS and so on.
This is quite misleading at first.
Metro is very good and very well implemented with netbeans, and it's easier to start with it. anyway it hides you sometimes what's going on underneath.
I find CXF is a very good framework, and if you love the SPring wayyou should consider give it a chance.
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Parse errors while creating a Web service from Java class!

Can anybody tell me please, is it possible to create a Web Service from java class where the input from user is required ?
I have the following program, which is successfully compiled, but when I'm trying to make a web service in JDeveloper, the following error occurs:
"Validation failed.
The implementation class primePackage.isPrime ofport type MyWebService contains parse errors."
import java.io.*;
import java.util.*;
class isPrime
public static void main (String args[])
Scanner reader = new Scanner(System.in);
int n;
System.out.println ("Enter a number you want to know is it prime or not");
n=reader.nextInt();
if (isPrime(n))
System.out.println ("True");
else
System.out.println ("False");
static boolean isPrime (int n)
int i=2;
while (i<=n-1)
if (n%i==0)
return false;
i++;
return true;
}

Hi,
Can anybody tell me please, is it possible to create
a Web Service from java class where the input from
user is required ?Yes, the parameters of your method will be mapped in WSDL.
But i've some considerations about your code.
I suggest you change the name of isPrime do Prime, its a good code convention to put the name of class starting with Upper case. and isn't good the name of class equals to name of method.
I suggest you to change the "static boolean isPrime (int n)" to "public boolean isPrime(int n)" to publish a method as a WebService method it's must be public and not static. After this change try to generate your Web Service.
Regards.

Calling a Web Service from Java

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never mind...i got it

Calling a Web Service from Java Webdynpro

Hi,
Can any one give me step by setp details on how to call a Web Service from Java Webdynpro ?
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Error The method setRouteGeometryLineArray(double[][]) in the type Trip is not applicable for the arguments (double[]) ComplexType_Trip.java WS_INVOKE/gen_wdp/packages/com/cintas/test/model/p1 line 249
thanks
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Hi SBK,
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Error The method setRouteGeometryLineArray(double][) in the type Trip is not applicable for the arguments (double[]) ComplexType_Trip.java WS_INVOKE/gen_wdp/packages/com/cintas/test/model/p1 line 249
The square brackets [] after double in the method call appear to be reversed. Is that also in the code? or just a mistake here?
Hope this points you in the right direction.
BRgds,
Simon

Web Service From Java class, serialization problem

Hi,
I want to create Web Service from Java class, I made java project, generated web service from it, create web service archive project and deployed it to WAS 6.40.
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public int add(int a, int b);
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I can succesfully call add method from Web Service Navigator, it works fine but when I call doSomthing methods I get the following error:

Deserializing fails. Nested message: XML Deserialization Error. Result class [com.mycomp.sap_tech.ws.MyRequest] does not have property [Amount] of type [java.lang.String]. It is required to load XML..

Any ideas how to resolve it?
P.S. MyRequest class is exposed throw VI, has default constractor and public getters and setters for all properties. It implements Serializable as well. Any guesses?
Thanks in advance,
Victor.

Hi Bhavik, thanks for response.
as I already mentioned it implements Serializable, so it is not the problem.
Thanks Avi but it didn't helps iether
Victor

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Thanks in advance.

Hello,
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If you are passing then make sure that current user is having access on SP site and your javaserver is setup for NTLM security. Here is few links for same issue which could help you troubleshoot the issue
http://stackoverflow.com/questions/8884152/ntlm-fails-when-consuming-sharepoint-web-service-from-java
http://www.pentalogic.net/sharepoint-products/reminder/reminder-manual?p=troubleshooting%2F401errors%2F401errors.htm
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Hemendra:Yesterday is just a memory,Tomorrow we may never see Please remember to mark the replies as answers if they help and unmark them if they provide no help

How to create web services in java?

Hi,
I am a newbie to java webservices. Can anybody tell me how to create web services in java?
Any tutorial link or step by step doc would be useful.
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Thanks in advance.
naymo01.

Creating web services in Java appears to depend highly upon the server you intend to use.
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Problem in calling XI generated Web Service via Java Web Dynpro

Hi experts,
I have problems with calling a web service, which was created by XI. I have already tested the web service with Altova XMLSpy. The Web Service works fine.
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Mario

Hi Aviad,
thanks for your fast reply.
But in Web Service Navigator my Web Service is not shown, because I used the SOAP Adapter.
My Web Service link:
http://<host>:<port>/XISOAPAdapter/MessageServlet?channel=:SRV_GBD_WS_GET_DEB_DETAIL:CC_GBD_WEBSERVICE_SENDER&version=3.0&Sender.Service=&Interface=%5E*
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Regards,
Mario

What is web services in Java?

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