Delphi XE 无法正确使用 WebService

Question

让 WSDL 显示在 Delphi XE 下面正在创建如下所示的代码。 Out WebService 正在 BizTalk 服务器上运行：

....
....

  PicassoBTSTest_PortalOrchestration_Port_Portal = interface(IInvokable)
  ['{706CEB1F-0EC1-08C2-03C7-395C12905558}']
    **procedure Operation_Portal(var part: Variant); stdcall;**
  end;

function GetPicassoBTSTest_PortalOrchestration_Port_Portal(UseWSDL: Boolean=System.False; Addr: string=''; HTTPRIO: THTTPRIO = nil): PicassoBTSTest_PortalOrchestration_Port_Portal;

....
....

当调用 WebService 时，我正在执行如下所示的操作：

procedure TForm1.Button2Click(Sender: TObject);
var
  X: PicassoBTSTest_PortalOrchestration_Port_Portal;
  V: Variant;
begin
  X := GetPicassoBTSTest_PortalOrchestration_Port_Portal;

  V := 'JUST A TEST';

  X.Operation_Portal(V);
  ShowMessage(V);
end;

正如我们在日志中看到的，此代码正在正确调用我们的后端。但我们没有收到正确的回复。调用Operation_Portal后，V参数没有变化。当它应该包含其他值时，它包含“JUST A TEST”文本。

我尝试运行 Delphi 2006 中的代码，它给出了相同的结果。

我做错了什么。为什么我没有收到后端的响应？

/布莱恩

<?xml version="1.0" encoding="UTF-8"?>
-<wsdl:definitions xmlns:wsx="http://schemas.xmlsoap.org/ws/2004/09/mex" xmlns:wsa10="http://www.w3.org/2005/08/addressing" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:wsaw="http://www.w3.org/2006/05/addressing/wsdl" xmlns:msc="http://schemas.microsoft.com/ws/2005/12/wsdl/contract" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:wsap="http://schemas.xmlsoap.org/ws/2004/08/addressing/policy" xmlns:wsp="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing" xmlns:tns="http://techotel.dk/" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://techotel.dk/" name="BizTalkServiceInstance">-<wsdl:documentation><CreationInfo Created="2012-01-26 10:31:43Z"/></wsdl:documentation>-<wsdl:types><xsd:schema targetNamespace="http://techotel.dk/Imports"/></wsdl:types>-<wsdl:message name="PicassoBTSTest_PortalOrchestration_Port_Portal_Operation_Portal_InputMessage"><wsdl:part name="part" type="xsd:anyType"/></wsdl:message>-<wsdl:message name="PicassoBTSTest_PortalOrchestration_Port_Portal_Operation_Portal_OutputMessage"><wsdl:part name="part" type="xsd:anyType"/></wsdl:message>-<wsdl:portType name="PicassoBTSTest_PortalOrchestration_Port_Portal"><wsdl:documentation>service "PicassoBTSTest.PortalOrchestration" port "Port_Portal"</wsdl:documentation>-<wsdl:operation name="Operation_Portal"><wsdl:documentation>operation "Operation_Portal"</wsdl:documentation><wsdl:input message="tns:PicassoBTSTest_PortalOrchestration_Port_Portal_Operation_Portal_InputMessage"/><wsdl:output message="tns:PicassoBTSTest_PortalOrchestration_Port_Portal_Operation_Portal_OutputMessage"/></wsdl:operation></wsdl:portType>-<wsdl:binding name="BasicHttpBinding_ITwoWayAsync" type="tns:PicassoBTSTest_PortalOrchestration_Port_Portal"><soap:binding transport="http://schemas.xmlsoap.org/soap/http"/>-<wsdl:operation name="Operation_Portal"><wsdl:documentation>operation "Operation_Portal"</wsdl:documentation><soap:operation style="document" soapAction="Operation_Portal"/>-<wsdl:input><soap:body use="literal"/></wsdl:input>-<wsdl:output><soap:body use="literal"/></wsdl:output></wsdl:operation></wsdl:binding>-<wsdl:service name="BizTalkServiceInstance">-<wsdl:port name="BasicHttpBinding_ITwoWayAsync" binding="tns:BasicHttpBinding_ITwoWayAsync"><soap:address location="http://akibiztalk01.internal.local/PicassoBTSTestPortal/PicassoBTSTest_PortalOrchestration_Port_Portal.svc"/></wsdl:port></wsdl:service></wsdl:definitions>

Answer 1

首先，我将验证服务器是否发送回包含预期值的 XML SOAP 响应。

如果该值在响应中，则 Delphi 会以某种方式无法将其分配给 Variant 变量。

该服务是用 C# 开发的吗？也许对于测试而言，编写 Delphi 版本的服务并比较响应 XML 结构会有所帮助。