Error while using UTL_DBWS package

Question

Hello
I want to call a web service using UTL_DBWS package as explained in this link.
http://www.oracle-base.com/articles/10g/utl_dbws10g.php
I implemented the example successfully, and I need to my own web service.
my web service is just a java class that return a hello world and a parameter. deployed on Integrated weblogic server shipped with Jdeveloper11g.
here is my java class
package ws;
import javax.jws.Oneway;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
@WebService
public class HelloWorld {
    public HelloWorld() {
    @WebMethod(action = "http://ws//sayHelloWorld")
    public String sayHelloWorld(){
        return "Hello World";
    @WebMethod(action = "http://ws//sayHelloWorld")
    public String sayHelloName(@WebParam(name = "arg0")
        String n){
        return "Hello " + n;
}my WSDL is
  <?xml version="1.0" encoding="UTF-8" ?>
- <!--  Published by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is Oracle JAX-WS 2.1.5.
  -->
- <!--  Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is Oracle JAX-WS 2.1.5.
  -->
- <definitions xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://ws/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://ws/" name="HelloWorldService">
- <types>
- <xsd:schema>
  <xsd:import namespace="http://ws/" schemaLocation="http://127.0.0.1:7101/Application15-Model-context-root/HelloWorldPort?xsd=1" />
  </xsd:schema>
  </types>
- <message name="sayHelloWorld">
  <part name="parameters" element="tns:sayHelloWorld" />
  </message>
- <message name="sayHelloWorldResponse">
  <part name="parameters" element="tns:sayHelloWorldResponse" />
  </message>
- <message name="sayHelloName">
  <part name="parameters" element="tns:sayHelloName" />
  </message>
- <message name="sayHelloNameResponse">
  <part name="parameters" element="tns:sayHelloNameResponse" />
  </message>
- <portType name="HelloWorld">
- <operation name="sayHelloWorld">
  <input message="tns:sayHelloWorld" />
  <output message="tns:sayHelloWorldResponse" />
  </operation>
- <operation name="sayHelloName">
  <input message="tns:sayHelloName" />
  <output message="tns:sayHelloNameResponse" />
  </operation>
  </portType>
- <binding name="HelloWorldPortBinding" type="tns:HelloWorld">
  <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" />
- <operation name="sayHelloWorld">
  <soap:operation soapAction="http://ws//sayHelloWorld" />
- <input>
  <soap:body use="literal" />
  </input>
- <output>
  <soap:body use="literal" />
  </output>
  </operation>
- <operation name="sayHelloName">
  <soap:operation soapAction="http://ws//sayHelloWorld" />
- <input>
  <soap:body use="literal" />
  </input>
- <output>
  <soap:body use="literal" />
  </output>
  </operation>
  </binding>
- <service name="HelloWorldService">
- <port name="HelloWorldPort" binding="tns:HelloWorldPortBinding">
  <soap:address location="http://127.0.0.1:7101/Application15-Model-context-root/HelloWorldPort" />
  </port>
  </service>
  </definitions>and my function is to call the web service
CREATE OR REPLACE FUNCTION SAYHelloMYNAME (p_int_1 IN Varchar2)
  RETURN NUMBER
AS
  l_service          UTL_DBWS.service;
  l_call                 UTL_DBWS.call;
  l_wsdl_url         VARCHAR2(32767);
  l_namespace        VARCHAR2(32767);
  l_service_qname    UTL_DBWS.qname;
  l_port_qname       UTL_DBWS.qname;
  l_operation_qname  UTL_DBWS.qname;
  l_xmltype_in        XMLTYPE;
  l_xmltype_out       XMLTYPE;
  l_return          VARCHAR2(100);
BEGIN
  l_wsdl_url        := 'http://127.0.0.1:7101/Application15-Model-context-root/HelloWorldPort?wsdl';
  l_namespace       := 'http://ws/';
  l_service_qname   := UTL_DBWS.to_qname(l_namespace, 'HelloWorldService');
  l_port_qname      := UTL_DBWS.to_qname(l_namespace, 'HelloWorldPort');
  l_operation_qname := UTL_DBWS.to_qname(l_namespace, 'sayHelloName');
   l_service := UTL_DBWS.create_service (
    wsdl_document_location => URIFACTORY.getURI(l_wsdl_url),
    service_name           => l_service_qname);
  l_call := UTL_DBWS.create_call (
    service_handle => l_service,
    port_name      => l_port_qname,
    operation_name => l_operation_qname);
  l_xmltype_in :=  XMLTYPE('<?xml version="1.0" encoding="utf-8"?>
    <sayHelloWorld xmlns="' || l_namespace || '">
      <parameters>' || p_int_1 || '</parameters>
      </sayHelloWorld>');
  l_xmltype_out := UTL_DBWS.invoke(call_Handle => l_call,
                                   request     => l_xmltype_in);
  UTL_DBWS.release_call (call_handle => l_call);
  UTL_DBWS.release_service (service_handle => l_service);
  l_return := l_xmltype_out.extract('//return/text()').getstringVal();
  RETURN l_return;
END;
/but when I test the function I get this error
ORA-29532: Java call terminated by uncaught Java exception: java.lang.IllegalAccessException: error.build.wsdl.model: oracle.j2ee.ws.common.tools.api.WsdlValidationException: Failed to read wsdl file at: "http://127.0.0.1:7101/Application15-Model-context-root/HelloWorldPort?wsdl", caused by: java.net.ConnectException.    : Connection refused
ORA-06512: at "WSUSER.UTL_DBWS", line 193
ORA-06512: at "WSUSER.UTL_DBWS", line 190
ORA-06512: at "WSUSER.SAYHELLOMYNAME", line 24any suggestions?

Answer 1

M.Jabr wrote:
can you elaborate more on this?
I can open http://127.0.0.1:7101/Application15-Model-context-root/HelloWorldPort?wsdl
on my browser.Is your browser on that Oracle server? You are instructing Oracle server code (the UTL_DBWS package) to access that URL.
The IP in that URL is a localhost IP address - and that means using the local IP stack only. So it expects a web server on the Oracle server platform on tcp port 7101. It cannot use that IP to access your client/development machine.
How can I test it using UTL_HTTP?You can write a basic web browser, minus the rendering engine, using UTL_HTTP. You can also use it for web service calls - which is my preference as I deem the UTL_DBWS package to clunky and complex.
See:
{message:id=1925297} (sample PL/SQL web browser)
{message:id=4205205} (sample PL/SQL web browser SOAP call)