How to use/configure web services in any application ?

Replies

• 

  Manish Goyal

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

  sookie

  goyal420

  What 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 !
• 

  Anil Jain

  If you are interested in binding part then do the following:
  
  WSDL – element
  - Tie the element to the protocol defined for the binding.
  - Define the transport protocol and style (RPC or Document).
  - For each operation of the each needs to be detailed.
  - For SOAP, the element needs to be defined, use (encoding or literal) and namespace.
  - If using encoding, needs to specifiy encodingStyle.
  
  Do let me know If you need anything specific.
  
  -CB
• 

  sookie

  @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 !
• 

  sookie

  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.
• 

  Manish Goyal

  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?