calling webservices

[Ram Gokul]

I want to call a vendors webservice from my servlet . I know the WDSL file.
Can someone point me how to do this step by step ?
I need to get a string token back from them.


Thanks

[D Rog]

I found very convenient of usage wsimport utility. You can find tons examples on net.

Here is 7Bee target I use in my build scripts:

  <target name="ws import" dir="PROJECT_HOME">
    <!--dependency  url changed after last access /-->
    <dependency value="true"/>
    <echo>WSDL import...</echo>
    <task exec="wsimport">
       <parameter>-keep</parameter>
       <parameter>-d</parameter>
       <parameter value="&source_directory;" type="file"/>
       <parameter>&wsdl_url;</parameter>
    </task>
  </target>              

When client artifacts generated, just call them in your servlet code. Here is an example:

 Infolet infolet = new InfoletService().getInfoletPort();
 List<InfoletData> data = null;
 try {
   data = infolet.getData(InfoletName.WS_NPI_WITH_PARAM,
  InfoletEnterprise.METRIC_STREAM, 100010); // parameters have no sense for scheduled
 ....
  } catch(Fault_Exception fe) {
...

Important steps are:
1. create new instance of a called service
2. obtain port
3. fill parameters
4. call service using port
5. process result
6. catch an exception if any