Generic Java client to invoke web service

Question

Hi,
1.We have a web service HelloWorld registered in UDDI registry (private) of weblogic.
2.We have written a client that returns the WSDL URL and it is inturn passed to another piece of code where it invokes the the remote method of webservice.
In the above case,our problem is that the client we wrote became specific to the webservice(HelloWorld port, HelloWorld everything specific to HelloWorld webservice).
But our intention os that we have to write a client which should be generic to access any webservice by providing the Service Name and business name.
The UDDI publishing and querying is going well with a code where it returns the WSDL url after this we have to write generic code to access the remote method on webservice.
I appreciate anyone give me a solution to solve.
Thanks
VR

Answer 1

hi,
The WSDL is available at
http://www.webservicex.net/stockquote.asmx?WSDL.
This WSDL has multiple ports and bindings.How do I
now which port/binding I should use?Hmm, hard to find a general answer. Each <port> element is linked to a single <binding> element. So, if you want to handle a certain binding, you have to access the corresponding port. Talking about your WSDL example, if you want to access the web service over, let's say, HTTP/GET you must access the <port name="StockQuoteHttpGet"> element. If you want to send a SOAP message, you must access the <port name="StockQuoteSoap"> element, and so on.
So depending on what type of message you want/have to send to the server, you have to access the corresponding <port> element.
In my code I am fetching the list of ports using
service.getPorts().Then I am iterating thru the list
and fetching the last port available in the List.I am
using this port further in my program.Is this the
right way?Can I use any port among the ports
available in the service.Generally spoken no! As I explained above, the actual <port> element of interest depends on the type of service you want/have to call. Very seldom the Web Service provider will offer a HTTP version of a certain operation. Mostly you have to hit a SOAP endpoint to get your response.
When I use the above approach I have a problem with
the Ouput format.When executing the webservice
client,the output format received and the output
format mentioned in the WSDL for that portType are
different.I mean, I get an Output format defined by
some other portType than the portType my program is
binded to.
When parsing the above mentioned WSDL,my program
binds to the last port i.e., StockQuoteHttpPost,and
identifies the output format as "Body" tag.
But when I print the Output from the webservice it is
different.It is looks like thisOk, that looks strange indeed. I can't imagine that the web server would respond with a SOAP message to your HTTP/POST request. However, technically it is possible because everything defined in the corresponding WSDL section says that the response will contain an xsd:string. "Body" is the name of the part, to be able to identify it, and does not need to occur in the response. So, the response is probably ok...
<wsdl:message name="GetQuoteHttpPostOut">
<wsdl:part name="Body" element="tns:string"/>
</wsdl:message>Anyway, I would have expected a list of key-value pairs instead:
Symbol=SBYN
Last=3. 17
Date=6/22/2005
Time=3:59pm
Change=0.00
Open=N/A
High=N/A
Low=N/A
Volume=0
MktCap=2 72.0M
PreviousClose=3.17
PercentageChange=0.00%
AnnRange=2.53 - 4.20
Earns=0.04
P-E=79.25
Name=SEEBEYOND TECH COcheerz, r.