Problem consuming web service created by ABAP via standalone java client

Question

I'm trying to consume web service created by ABAP in R3 system via standalone java client. I should be getting a string reply after consumed the web service (ZSMS_INBOUND), but so far i received null. I cant find any exception or log to trace the problem. Any help would be appreciated. Is there anything wrong with my client calling the web service?
public void myMethod{
          // TODO : Implement
          try{
               Stub stub = (Stub)new ZSMS_INBOUNDServiceImpl().getLogicalPort();
               stub._setProperty(javax.xml.rpc.Stub.ENDPOINT_ADDRESS_PROPERTY,"http://mytest:8080/sap/bc/srt/rfc/sap/ZSMS_INBOUND?sap-               client=100&wsdl=1.1&mode=sap_wsdl");
               inboundService = (ZSMS_INBOUND) stub;
               BAPIRET2 str = inboundService.ZSMS_INBOUND(date, message, modemId, smsId, tel, time);
               ackDeliveryArray<i> = str.toString();
          }catch (Exception e) {
               e.printStackTrace();
Generated following SAP help standalone proxy creation steps.
***files fr SEIs
ZSMS_INBOUND.java   (interface)
ZSMS_INBOUNDService.java  (interface)
ZSMS_INBOUNDServiceImpl.java
ZSMS_INBOUNDSoapBindingStub.java
***files fr Proxy classes
ZSMS_INBOUND.java
ZSMS_INBOUNDResponse.java
BAPIRET2.java
.... many more files
the wsdl is as below (generated by ABAP):
<?xml version="1.0" encoding="utf-8" ?>
- <wsdl:definitions targetNamespace="urn:sap-com:document:sap:rfc:functions" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:n0="http://www.sap.com/webas/630/soap/features/authentication/" xmlns:sap="http://www.sap.com/webas/630/wsdl/features" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="urn:sap-com:document:sap:rfc:functions" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
- <wsdl:types>
- <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="urn:sap-com:document:sap:rfc:functions" targetNamespace="urn:sap-com:document:sap:rfc:functions" elementFormDefault="unqualified" attributeFormDefault="qualified">
- <xsd:simpleType name="char1">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="1" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char10">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="10" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char17">
+ <xsd:restriction base="xsd:string">
  <xsd:maxLength value="17" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char170">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="170" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char20">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="20" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char220">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="220" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char30">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="30" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char32">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="32" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="char50">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="50" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="date">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="10" />
  <xsd:pattern value="\d\d\d\d-\d\d-\d\d" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="numeric3">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="3" />
  <xsd:pattern value="\d*" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="numeric6">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="6" />
  <xsd:pattern value="\d*" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:simpleType name="time">
- <xsd:restriction base="xsd:string">
  <xsd:maxLength value="8" />
  <xsd:pattern value="\d\d:\d\d:\d\d" />
  </xsd:restriction>
  </xsd:simpleType>
- <xsd:complexType name="BAPIRET2">
- <xsd:sequence>
  <xsd:element name="TYPE" type="tns:char1" />
  <xsd:element name="ID" type="tns:char20" />
  <xsd:element name="NUMBER" type="tns:numeric3" />
  <xsd:element name="MESSAGE" type="tns:char220" />
  <xsd:element name="LOG_NO" type="tns:char20" />
  <xsd:element name="LOG_MSG_NO" type="tns:numeric6" />
  <xsd:element name="MESSAGE_V1" type="tns:char50" />
  <xsd:element name="MESSAGE_V2" type="tns:char50" />
  <xsd:element name="MESSAGE_V3" type="tns:char50" />
  <xsd:element name="MESSAGE_V4" type="tns:char50" />
  <xsd:element name="PARAMETER" type="tns:char32" />
  <xsd:element name="ROW" type="xsd:int" />
  <xsd:element name="FIELD" type="tns:char30" />
  <xsd:element name="SYSTEM" type="tns:char10" />
  </xsd:sequence>
  </xsd:complexType>
- <xsd:element name="ZSMS_INBOUND">
- <xsd:complexType>
- <xsd:sequence>
  <xsd:element name="DATE" type="tns:date" />
  <xsd:element name="MESSAGE" type="tns:char170" />
  <xsd:element name="MODEMID" type="tns:char10" />
  <xsd:element name="SMSID" type="tns:char17" />
  <xsd:element name="TEL" type="tns:char20" />
  <xsd:element name="TIME" type="tns:time" />
  </xsd:sequence>
  </xsd:complexType>
  </xsd:element>
- <xsd:element name="ZSMS_INBOUNDResponse">
- <xsd:complexType>
- <xsd:sequence>
  <xsd:element name="RETURN" type="tns:BAPIRET2" />
  </xsd:sequence>
  </xsd:complexType>
  </xsd:element>
  </xsd:schema>
  </wsdl:types>
- <wsdl:message name="ZSMS_INBOUND">
  <wsdl:part name="parameters" element="tns:ZSMS_INBOUND" />
  </wsdl:message>
- <wsdl:message name="ZSMS_INBOUNDResponse">
  <wsdl:part name="parameters" element="tns:ZSMS_INBOUNDResponse" />
  </wsdl:message>
- <sap:Feature name="design_0" uri="http://www.sap.com/webas/630/soap/features/authentication/">
- <sap:Property qname="n0:AuthenticationLevel">
  <sap:Option value="n0:None" />
  </sap:Property>
  </sap:Feature>
- <wsdl:portType name="ZSMS_INBOUND">
  <sap:useFeature feature="tns:design_0" />
- <wsdl:operation name="ZSMS_INBOUND">
  <wsdl:input message="tns:ZSMS_INBOUND" />
  <wsdl:output message="tns:ZSMS_INBOUNDResponse" />
  </wsdl:operation>
  </wsdl:portType>
- <wsdl:binding name="ZSMS_INBOUNDSoapBinding" type="tns:ZSMS_INBOUND">
  <soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http" />
- <wsdl:operation name="ZSMS_INBOUND">
  <soap:operation soapAction="" />
- <wsdl:input>
  <soap:body use="literal" />
  </wsdl:input>
- <wsdl:output>
  <soap:body use="literal" />
  </wsdl:output>
  </wsdl:operation>
  </wsdl:binding>
- <wsdl:service name="ZSMS_INBOUNDService">
- <wsdl:port name="ZSMS_INBOUNDSoapBinding" binding="tns:ZSMS_INBOUNDSoapBinding">
  <soap:address location="http://mytest:8080/sap/bc/srt/rfc/sap/ZSMS_INBOUND?sap-client=100" />
  </wsdl:port>
  </wsdl:service>
  </wsdl:definitions>

Answer 1

I'm now able to consume the web service, but with the error as below:
Warning ! Protocol Implementation [com.sap.engine.services.webservices.jaxrpc.wsdl2java.features.builtin.MessageIdProtocol] could not be loaded (NoClassDefFoundError) !
Error Message is :com/sap/guid/GUIDGeneratorFactory
BAPIRET2 mappingInfo:
  TYPE   TYPE   false   false   11
  ID   ID   false   false   11
  NUMBER   NUMBER   false   false   11
  MESSAGE   MESSAGE   false   false   11
  LOG_NO   LOG_NO   false   false   11
  LOG_MSG_NO   LOG_MSG_NO   false   false   11
  MESSAGE_V1   MESSAGE_V1   false   false   11
  MESSAGE_V2   MESSAGE_V2   false   false   11
  MESSAGE_V3   MESSAGE_V3   false   false   11
  MESSAGE_V4   MESSAGE_V4   false   false   11
  PARAMETER   PARAMETER   false   false   11
  ROW   ROW   false   false   11
  FIELD   FIELD   false   false   11
  SYSTEM   SYSTEM   false   false   11
My java code is :
public class MyTest {
     public static void main(String[] args){
          try{
                         Stub stub = (Stub)new ZSMS_INBOUNDServiceImpl().getLogicalPort();
                         stub._setProperty(javax.xml.rpc.Stub.ENDPOINT_ADDRESS_PROPERTY,"http://mytest:8080/sap/bc/srt/rfc/sap/ZSMS_INBOUND?sap-client=100");
                         ZSMS_INBOUND inboundService = (ZSMS_INBOUND) stub;
                         BAPIRET2 str = inboundService.ZSMS_INBOUND(param1,param2,param3,param4,param5,param6);
                         System.out.println(str.toString());
                         }catch (Exception e) {
                              e.printStackTrace();