How to use/configure web services in any application ?

What kind of web services do you want in any application sookie???

goyal420What kind of web services do you want in any application sookie???

Hey goyal420, thanks a lot for the reply. I already have some Web Service API ready and also have WSDL[Web Services Description Language]. I jus want to know what all steps one need to take for binding that wsdl in any application. I know one can call that Web services API method's in the application but what configurations one need to do for that.

In other way, I want to know the entire flow of working of Webservices

PS: Any kind of help will be appreciated in this regard . Thanks a lot !

If you are interested in binding part then do the following:

WSDL – <binding> element
- Tie the <portType> element to the protocol defined for the binding.
- Define the transport protocol and style (RPC or Document).
- For each operation of the <portType> each <message> needs to be detailed.
- For SOAP, the <soap:body> element needs to be defined, use (encoding or literal) and namespace.
- If using encoding, <soap:body> needs to specifiy encodingStyle.

Do let me know If you need anything specific.

-CB

@CrazyBoy Thanks a lot that was really something informative response.

One question, if I have that part of binding in my WSDL document then how can I call the methods[or to be more precise called as 'operations' in Web Services world] in my applications web pages ? Is it possible to do anything like that ?

I am having two servers - First on which my current application runs[Can call it as Service Consumer] and Second is on which some other server is running providing some services [can be called as Service provider]. The Second server provides some services defined in a WSDL document. Now I want that WSDL to be found by First server [Service Consumer]

Can you give some ideas about it ? Rest of the part I will do. I just need some ideas about all this working concept. 😕

[EDIT]
One more thing, Do I need to create any proxy and stub sort of classes to call that service in my application or is it possible without using them also ?

Thanks a lot !

Hi everyone

Thanks a lot for so much of your help. My problem is sort of solved. 😀

We can consume web services in an application by using #-Link-Snipped-#. I am simplifying the steps and writing them down here

STEP 1: Download separately[or can include them directly form Axis bin/lib folder if Axis is installed] and include following jar files in the CLASSPATH of your Client Class [Class which will consume services]

• axis.jar
• jaxrpc.jar
• saaj.jar
• commons-logging.jar
• commons-discovery.jar
• wsdl4j.jar

[More jars may be required to add depending on the WSDL you might be using.]

STEP 2: Download the WSDL file from Service Provider server's url For.eg. #-Link-Snipped-#
Add File with extension as .wsdl in your project. Let me name above WSDL file as StockQuote.wsdl

STEP 3: Now create stub classes using following command at run time. Go to appropriate structure of your project's folder and enter following command in Command prompt.

java -classpath D:\bin\axis-1_4\lib\axis.jar;D:\bin\axis-1_4\lib\jaxrpc.jar;D:\bin\axis-1_4\lib\saaj.jar;D:\bin\axis-1_4\lib\commons-logging.jar;D:\bin\axis-1_4\lib\commons-discovery.jar;D:\bin\axis-1_4\lib\wsdl4j.jar; org.apache.axis.wsdl.WSDL2Java StockQuote.wsdl

STEP 4: Now you can simply create Client class like following and use the operations specified in your WSDL. You can also pass paramters.

import org.apache.axis.client.Call;
import org.apache.axis.client.Service;
import javax.xml.namespace.QName;
   
public class TestClient {
public static void main(String [] args) {
try {
    String endpoint ="https://www.webservicex.net/stockquote.asmx?WSDL";
           Service  service = new Service(); 
            Call     call    = (Call) service.createCall();
  
           call.setTargetEndpointAddress( new java.net.URL(endpoint) );
           call.setOperationName(new QName("https://soapinterop.org/", echoString"));
 
         String ret = (String) call.invoke( new Object[] { "Hello!" } );
  
         System.out.println("Sent 'Hello!', got '" + ret + "'");
       } catch (Exception e) {
         System.err.println(e.toString());
      }
    }
  }

Finally, your work that you want to do using services is done. 😀

For basic flow of Web services , check #-Link-Snipped-#

PS: If any queries, Please ask- I may try to answer.

hey sookie can we consider this concept of web services similar to socket programming?I mean both are used for making connection and to retrieve the services..If i am right?If no can you please explain the difference?