Able to run application Amazon Associate Web Service From from home but not from University using a proxy server

I am developing an Amazon Associate web service (AAWS) P using their WSDL. For this I am using Tomcat version 6 and jdk 1.6 in Eclipse 3.3. The project is set up as a dynamic web project and uses Axis2.

I can run my application from home but not from within the University via a proxy server. AAWS  API uses SOAP previously I have used REST from within the university and used basic authentication, the REST app ran okay, see below the code for this (details changed for security)

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public class SimpleAuthenticator extends Authenticator {

    private String username;
    private String password;
                     
   public SimpleAuthenticator(String username, String password) {
      this.username = username;
      this.password = password;
   }
   
   public PasswordAuthentication getPasswordAuthentication() {
      return new PasswordAuthentication(username, password.toCharArray());
   }
}      

//below calls above:
try {
                  //Set up Authenticator
                  
                  System.setProperty( "proxySet", "true" );
                  System.setProperty("http.proxyHost", "proxyhost");
                  System.setProperty("http.proxyPort", "8080");
                  Authenticator.setDefault(new SimpleAuthenticator("usernamer",
                  "password"));
                  
            } catch (Exception e) {
                  e.printStackTrace();
            }


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I The REST calls worked fine - however when using the Amazon API I get the error below


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Retrieving document at 'http://ecs.amazonaws.com/AWSECommerceService/UK/AWSECommerceService.wsdl'.
[INFO] Building AxisService from wsdl: http://ecs.amazonaws.com/AWSECommerceService/UK/AWSECommerceService.wsdl
[INFO] Unable to sendViaPost to url[http://soap.amazon.co.uk/onca/soap?Service=AWSECommerceService]
org.apache.axis2.AxisFault: Transport error: 501 Error: Not Implemented
      at org.apache.axis2.transport.http.HTTPSender.handleResponse(HTTPSender.java:298)
      at org.apache.axis2.transport.http.HTTPSender.sendViaPost(HTTPSender.java:192)
      at org.apache.axis2.transport.http.HTTPSender.send(HTTPSender.java:77)
      at org.apache.axis2.transport.http.CommonsHTTPTransportSender.writeMessageWithCommons(CommonsHTTPTransportSender.java:327)
      at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(CommonsHTTPTransportSender.java:206)
      at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:396)
      at org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:374)
      at org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:211)
      at org.apache.axis2.client.OperationClient.execute(OperationClient.java:163)
      at org.apache.axis2.jaxws.core.controller.AxisInvocationController.execute(AxisInvocationController.java:570)
      at org.apache.axis2.jaxws.core.controller.AxisInvocationController.doInvoke(AxisInvocationController.java:110)
      at org.apache.axis2.jaxws.core.controller.InvocationController.invoke(InvocationController.java:105)
      at org.apache.axis2.jaxws.client.proxy.JAXWSProxyHandler.invokeSEIMethod(JAXWSProxyHandler.java:271)
      at org.apache.axis2.jaxws.client.proxy.JAXWSProxyHandler.invoke(JAXWSProxyHandler.java:141)
      at $Proxy10.itemSearch(Unknown Source)
      at servlet.MPCServlet.itemSearch(MPCServlet.java:293)
      at servlet.MPCServlet.doPost(MPCServlet.java:143)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
      at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
      at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
      at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
      at java.lang.Thread.run(Thread.java:595)
20-Apr-2008 09:25:53 org.apache.catalina.core.StandardWrapperValve invoke

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I have also included the code for the main calling method in this itemsearch:


*******************************************************************************************************************
private void itemSearch(HttpServletRequest request,
                  HttpServletResponse response) {
      
            
                PrintWriter out = null;
            try {
                  out = response.getWriter();
            } catch (IOException e) {
                  // TODO Auto-generated catch block
                  e.printStackTrace();
            }
            
      
      
            String keyWord = request.getParameter("keyword");
            String url = request.getParameter("url");

            Vector<SearchItem> vect =  new Vector<SearchItem>();
            
            // Set the service:
            try{
            this.service = new AWSECommerceService();

            
      
            
            // Set the service port:
            AWSECommerceServicePortType port = service.getAWSECommerceServicePort();

            // Get the operation object:
            ItemSearchRequest itemRequest = new ItemSearchRequest();

            // Fill in the request object:
            itemRequest.setSearchIndex(url);
            itemRequest.setKeywords(keyWord);
            
            
            ItemSearch ItemElement = new ItemSearch();
            ItemElement.setAWSAccessKeyId("AccesskeyID");
            ItemElement.getRequest().add(itemRequest);

            ItemElement.setAssociateTag("AssociateTag");
          
                        
            // Call the Web service operation and store the response
            // in the response object:
            ItemSearchResponse amazonResponse = port
                        .itemSearch(ItemElement);
            
            OperationRequest     operationRequest = amazonResponse.getOperationRequest();
            
            

            if (operationRequest != null) {
                  BigInteger totalpages = null;

                  for (Items itemList : amazonResponse.getItems()) {
                        Request requestElement = itemList.getRequest();
                        if (requestElement != null) {
                              totalpages = itemList.getTotalPages();
                        }
                        

                        for (Item item : itemList.getItem()) {
                              out.println("Product Name: "
                                          + item.getItemAttributes().getTitle() + " "  +
                                          item.getASIN());
                              String title = item.getItemAttributes().getTitle();
                              Price price = item.getItemAttributes().getListPrice();
                              //String listPrice = price.getFormattedPrice();
                              String listPrice = "";
                              String manufacturer = item.getItemAttributes().getManufacturer();
                              SearchItem searchItem = new SearchItem(title,manufacturer,listPrice);
                        
                              vect.add(searchItem);
                              

                        }

                  }

                  
                  
            }
            
            
        
            
      }
      finally{
            
      }
      
      request.setAttribute("stuff", vect);
      requestDespatch(request, response, "itemsearchresult.jsp");
      
      
      }



*****************************************************************************************************************


I have tried numerous solutions to this problem.

1st solution - adding the following to axis.xml within the transport sender section:

            
                   <ProxyHost>wwwcache.csd.abdn.ac.uk</ProxyHost>
                      <ProxyPort>8080</ProxyPort>
                      <ProxyUser>ccorner</ProxyUser>
                      <ProxyPassword>WYHAFApa</ProxyPassword>

2nd solution

Attempted to authenticate and set up the proxy properties in the code

            Options options = new Options();
      
            HttpTransportProperties.ProxyProperties pp = new HttpTransportProperties.ProxyProperties();
            
             pp.setProxyName("proxyname");
             pp.setProxyPort(8080);
             pp.setUserName("username");
             pp.setPassWord("password");
            
            
            HttpTransportProperties.Authenticator auth = new HttpTransportProperties.Authenticator();
            
            auth.setPassword("password");
            auth.setUsername("username");
            auth.setHost("proxyname");
            auth.setPort(8080);

            
             options.setProperty(HTTPConstants.PROXY, pp);
             options.setProperty(HTTPConstants.AUTHENTICATE,auth );

After this I tried commenting out the simple authenticator code and just using solution 2

Can you help in this please.

Thanks

Clive Corner
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