I am trying to call external web service using Apex, it need to upload an xml file to the web service.

According to the stub method, I have to transfer the xml file to String[] field_order_type_info which I have no idea how to do.

I am quite new to Apex, please help me.

Thanks in advance.

the Web Service WSDL address.

  the part of generated Apex code from wsdl file

//Generated by wsdl2apex

public class webservicesSeekComAu {
    public class UploadFileResult_element {
        private String[] apex_schema_type_info = new String[]{'http://webservices.seek.com.au','true','false'};
        private String[] field_order_type_info = new String[]{};
    }
    public class UploadFileWithCredentialsResponse_element {
        public webservicesSeekComAu.UploadFileWithCredentialsResult_element UploadFileWithCredentialsResult;
        private String[] UploadFileWithCredentialsResult_type_info = new String[]{'UploadFileWithCredentialsResult','http://webservices.seek.com.au','UploadFileWithCredentialsResult_element','0','1','false'};
        private String[] apex_schema_type_info = new String[]{'http://webservices.seek.com.au','true','false'};
        private String[] field_order_type_info = new String[]{'UploadFileWithCredentialsResult'};
    }
    public class xmlFastlaneFile_element {
        private String[] apex_schema_type_info = new String[]{'http://webservices.seek.com.au','true','false'};
        private String[] field_order_type_info = new String[]{};
    }
    public class FastLanePlusSoap {
        public String endpoint_x = 'http://test.webservices.seek.com.au/FastLanePlus.asmx';
        public Map<String,String> inputHttpHeaders_x;
        public Map<String,String> outputHttpHeaders_x;
        public String clientCert_x;
        public String clientCertPasswd_x;
        public Integer timeout_x;
        private String[] ns_map_type_info = new String[]{'http://webservices.seek.com.au', 'webservicesSeekComAu'};
        public webservicesSeekComAu.UploadFileWithCredentialsResult_element UploadFileWithCredentials(String userName,String password,String role,webservicesSeekComAu.xmlFastlaneFile_element xmlFastlaneFile) {
            webservicesSeekComAu.UploadFileWithCredentials_element request_x = new webservicesSeekComAu.UploadFileWithCredentials_element();
            webservicesSeekComAu.UploadFileWithCredentialsResponse_element response_x;
            request_x.userName = userName;
            request_x.password = password;
            request_x.role = role;
            request_x.xmlFastlaneFile = xmlFastlaneFile;
            Map<String, webservicesSeekComAu.UploadFileWithCredentialsResponse_element> response_map_x = new Map<String, webservicesSeekComAu.UploadFileWithCredentialsResponse_element>();
            response_map_x.put('response_x', response_x);
            WebServiceCallout.invoke(
              this,
              request_x,
              response_map_x,
              new String[]{endpoint_x,
              'http://webservices.seek.com.au/UploadFileWithCredentials',
              'http://webservices.seek.com.au',
              'UploadFileWithCredentials',
              'http://webservices.seek.com.au',
              'UploadFileWithCredentialsResponse',
              'webservicesSeekComAu.UploadFileWithCredentialsResponse_element'}
            );
            response_x = response_map_x.get('response_x');
            return response_x.UploadFileWithCredentialsResult;
        }
        public webservicesSeekComAu.UploadFileResult_element UploadFile(String Token,webservicesSeekComAu.xmlFastlaneFile_element xmlFastlaneFile) {
            webservicesSeekComAu.UploadFile_element request_x = new webservicesSeekComAu.UploadFile_element();
            webservicesSeekComAu.UploadFileResponse_element response_x;
            request_x.Token = Token;
            request_x.xmlFastlaneFile = xmlFastlaneFile;
            Map<String, webservicesSeekComAu.UploadFileResponse_element> response_map_x = new Map<String, webservicesSeekComAu.UploadFileResponse_element>();
            response_map_x.put('response_x', response_x);
            WebServiceCallout.invoke(
              this,
              request_x,
              response_map_x,
              new String[]{endpoint_x,
              'http://webservices.seek.com.au/UploadFile',
              'http://webservices.seek.com.au',
              'UploadFile',
              'http://webservices.seek.com.au',
              'UploadFileResponse',
              'webservicesSeekComAu.UploadFileResponse_element'}
            );
            response_x = response_map_x.get('response_x');
            return response_x.UploadFileResult;
        }
    }
    public class UploadFileWithCredentialsResult_element {
        private String[] apex_schema_type_info = new String[]{'http://webservices.seek.com.au','true','false'};
        private String[] field_order_type_info = new String[]{};
    }
    public class UploadFile_element {
        public String Token;
        public webservicesSeekComAu.xmlFastlaneFile_element xmlFastlaneFile;
        private String[] Token_type_info = new String[]{'Token','http://www.w3.org/2001/XMLSchema','string','0','1','false'};
        private String[] xmlFastlaneFile_type_info = new String[]{'xmlFastlaneFile','http://webservices.seek.com.au','xmlFastlaneFile_element','0','1','false'};
        private String[] apex_schema_type_info = new String[]{'http://webservices.seek.com.au','true','false'};
        private String[] field_order_type_info = new String[]{'Token','xmlFastlaneFile'};
    }
    public class UploadFileWithCredentials_element {
        public String userName;
        public String password;
        public String role;
        public webservicesSeekComAu.xmlFastlaneFile_element xmlFastlaneFile;
        private String[] userName_type_info = new String[]{'userName','http://www.w3.org/2001/XMLSchema','string','0','1','false'};
        private String[] password_type_info = new String[]{'password','http://www.w3.org/2001/XMLSchema','string','0','1','false'};
        private String[] role_type_info = new String[]{'role','http://www.w3.org/2001/XMLSchema','string','0','1','false'};
        private String[] xmlFastlaneFile_type_info = new String[]{'xmlFastlaneFile','http://webservices.seek.com.au','xmlFastlaneFile_element','0','1','false'};
        private String[] apex_schema_type_info = new String[]{'http://webservices.seek.com.au','true','false'};
        private String[] field_order_type_info = new String[]{'userName','password','role','xmlFastlaneFile'};
    }
    public class UploadFileResponse_element {
        public webservicesSeekComAu.UploadFileResult_element UploadFileResult;
        private String[] UploadFileResult_type_info = new String[]{'UploadFileResult','http://webservices.seek.com.au','UploadFileResult_element','0','1','false'};
        private String[] apex_schema_type_info = new String[]{'http://webservices.seek.com.au','true','false'};
        private String[] field_order_type_info = new String[]{'UploadFileResult'};
    }
}

the operation involved:

UploadFile(String Token, webservicesSeekComAu.xmlFastlaneFile_element xmlFastlaneFile);

the xmlFastlaneFile_element is on behalf of an xml file.

the example of  xml file: 

 
<FastLanePlus UploaderID="1" AgentID="" Version="1.1">
  <Client ID="1" MinJobs="0" MaxJobs="9999999">
    <Job Reference="SK/1" TemplateID="" ScreenID="">
      <Title>Test</Title>
      <SearchTitle>Test</SearchTitle>
      <Description>Test</Description>
      <AdDetails><![CDATA[Test]]></AdDetails>
      <ApplicationEmail></ApplicationEmail>
      <ApplicationURL></ApplicationURL>
      <ResidentsOnly></ResidentsOnly>
      <Items>
        <Item Name="Jobtitle">Test</Item>
        <Item Name="Bullet1">Bullet1</Item>
        <Item Name="Bullet2">Bullet2</Item>
        <Item Name="Bullet3">Bullet3</Item>
        <Item Name="ContactName"></Item>
        <Item Name="PhoneNo">999999</Item>
        <Item Name="FaxNo">999999</Item>
        <Item Name="RefNumber">SK/1</Item>
      </Items>
      <Listing MarketSegments="Main">
        <Classification Name="Location">Melbourne</Classification>
        <Classification Name="Area">MelbourneInner</Classification>
        <Classification Name="WorkType">FullTime</Classification>
        <Classification Name="Classification">Accounting</Classification>
        <Classification Name="SubClassification">Accountant</Classification>
        <Classification Name="Specialisation">Financial</Classification>
      </Listing>
      <Salary Type="AnnualPackage" Min="70000" Max="80000" AdditionalText="$70,000 + bonus" />
      <StandOut IsStandOut="false" LogoID="" Bullet1="" Bullet2="" Bullet3="" />
    </Job>
  </Client>
</FastLanePlus>