为什么Delphi 6调用C#的WebService，只要调用传入参数是string类型的函数就报错？

[Ki1381]

SOAP Response Packet: result element expected, received "<ConfrimResponse xmlns="http://tempuri.org/"/>"

WebService应该没问题，用C#调完全正常，而且用Delphi调，不需要string参数的函数都没问题，返回类型是string也没问题。

D6是古董了点，但暂时不能动，请高手们提供个解决方法。

[dl110]

好像WebService返回的都是WideString。但这两个类型是否可强制转换，不知道了。

[mantti]

用WideString

[myvicy]

两种数据类型不一样要转换一下.

[luxuewei5214]

转为Pchar类型传入试试

[喝口水]

PChar类型可以,
String是第一位是字符串的长度,从第二位开始才是真正的数据

[珍惜生命远离CPP]

估计是字符集的问题吧，用utf-8试试看

[Ki1381]

谢谢楼上各位，可是还是不行

procedure TForm1.Button1Click(Sender: TObject);
var
saa:ServiceSoap;
str:widestring;
begin
str := widestring('abc');
saa := GetServiceSoap();
edit1.Text := saa.Confirm(str);
end;

这样写对吗？

[dl110]

好像没那么复杂,这是我的应用：

//以下是Delphi生成的WebService调用
unit version;

interface

uses InvokeRegistry, SOAPHTTPClient, Types, XSBuiltIns;

type

  // ************************************************************************ //
  // The following types, referred to in the WSDL document are not being represented
  // in this file. They are either aliases[@] of other types represented or were referred
  // to but never[!] declared in the document. The types from the latter category
  // typically map to predefined/known XML or Borland types; however, they could also 
  // indicate incorrect WSDL documents that failed to declare or import a schema type.
  // ************************************************************************ //
  // !:string          - "http://www.w3.org/2001/XMLSchema"



  // ************************************************************************ //
  // Namespace : http://csyangpeng.cn/
  // soapAction: http://csyangpeng.cn/%operationName%
  // transport : http://schemas.xmlsoap.org/soap/http
  // binding   : VersionSoap
  // service   : Version
  // port      : VersionSoap
  // URL       : http://www.MyService.com/services/version.asmx
  // ************************************************************************ //
  VersionSoap = interface(IInvokable)
  ['{B274BBBB-F68D-7338-454D-6E33B840DEBE}']
    function  GetDataURL: WideString; stdcall;
    function  GetSSJKURL: WideString; stdcall;
    function  GetVersion: WideString; stdcall;
    function  GetDataVersion: WideString; stdcall;
    procedure SetDataVersion; stdcall;
  end;

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


implementation

uses UniMain;

function GetVersionSoap(UseWSDL: Boolean; Addr: string; HTTPRIO: THTTPRIO): VersionSoap;
const
  defSvc  = 'Version';
  defPrt  = 'VersionSoap';
var
  RIO: THTTPRIO;
begin
  Result := nil;
  if (Addr = '') then
  begin
    if UseWSDL then
      //Addr := defWSDL
      Addr := MainForm.edtWebService.Text+'?wsdl'
    else
      //Addr := defURL;
      Addr := MainForm.edtWebService.Text;
  end;
  if HTTPRIO = nil then
    RIO := THTTPRIO.Create(nil)
  else
    RIO := HTTPRIO;
  try
    Result := (RIO as VersionSoap);
    if UseWSDL then
    begin
      RIO.WSDLLocation := Addr;
      RIO.Service := defSvc;
      RIO.Port := defPrt;
    end else
      RIO.URL := Addr;
  finally
    if (Result = nil) and (HTTPRIO = nil) then
      RIO.Free;
  end;
end;


initialization
  InvRegistry.RegisterInterface(TypeInfo(VersionSoap), 'http://csyangpeng.cn/', 'utf-8');
  InvRegistry.RegisterDefaultSOAPAction(TypeInfo(VersionSoap), 'http://csyangpeng.cn/%operationName%');

end.

在主程序中引用:uses version;
然后：

    Label11.Caption:= '当前版本号：'+GetVersionSoap.GetDataVersion;

就OK了。

[CCC的]

要看你接口单元中confirm里面生成的是什么类型的了，最好把代码贴出来看看

[Ki1381]

以下是自动生成的最原始的代码：

// ************************************************************************ //
// The types declared in this file were generated from data read from the
// WSDL File described below:
// WSDL     : http://10.16.66.16/KiTest/service.asmx?wsdl
// Encoding : utf-8
// Version  : 1.0
// (2008-04-09 13:00:12 - $Revision:   1.9.1.0.1.0.1.9  $)
// ************************************************************************ //
unit service;
interface
uses InvokeRegistry, Types, XSBuiltIns;
type
  // ************************************************************************ //
  // The following types, referred to in the WSDL document are not being represented
  // in this file. They are either aliases[@] of other types represented or were referred
  // to but never[!] declared in the document. The types from the latter category
  // typically map to predefined/known XML or Borland types; however, they could also 
  // indicate incorrect WSDL documents that failed to declare or import a schema type.
  // ************************************************************************ //
  // !:string          - "http://www.w3.org/2001/XMLSchema"
  // !:int             - "http://www.w3.org/2001/XMLSchema"
  // !:string          - "http://tempuri.org/"
  ArrayOfString = array of String;              { "http://tempuri.org/" }
  // ************************************************************************ //
  // Namespace : http://tempuri.org/
  // soapAction: http://tempuri.org/%operationName%
  // transport : http://schemas.xmlsoap.org/soap/http
  // binding   : ServiceSoap
  // service   : Service
  // port      : ServiceSoap
  // URL       : http://10.16.66.16/KiTest/service.asmx
  // ************************************************************************ //
  ServiceSoap = interface(IInvokable)
  ['{77573149-9C57-FA51-F11F-EFD527C91BD9}']
    function  HelloWorld: String; stdcall;
    function  GetBarCode(const index: Integer; const data: ArrayOfString): String; stdcall;
    function  Confirm(const s: string): string; stdcall;
  end;
function GetServiceSoap(UseWSDL: Boolean=System.False; Addr: string=''): ServiceSoap;

implementation
  uses SOAPHTTPClient;
function GetServiceSoap(UseWSDL: Boolean; Addr: string): ServiceSoap;
const
  defWSDL = 'http://10.16.66.16/KiTest/service.asmx?wsdl';
  defURL  = 'http://10.16.66.16/KiTest/service.asmx';
  defSvc  = 'Service';
  defPrt  = 'ServiceSoap';
var
  RIO: THTTPRIO;
begin
  Result := nil;
  if (Addr = '') then
  begin
    if UseWSDL then
      Addr := defWSDL
    else
      Addr := defURL;
  end;
  RIO := THTTPRIO.Create(nil);
  try
     if UseWSDL then
    begin
      RIO.WSDLLocation := Addr;
      RIO.Service := defSvc;
      RIO.Port := defPrt;
    end else
      RIO.URL := Addr;
    Result := (RIO as ServiceSoap);
  finally
    if Result = nil then
      RIO.Free;
  end;
end;

initialization
  InvRegistry.RegisterInterface(TypeInfo(ServiceSoap), 'http://tempuri.org/', 'utf-8');
  InvRegistry.RegisterDefaultSOAPAction(TypeInfo(ServiceSoap), 'http://tempuri.org/%operationName%');
  RemClassRegistry.RegisterXSInfo(TypeInfo(ArrayOfString), 'http://tempuri.org/', 'ArrayOfString');
end.

以下为调用代码

procedure TForm1.Button1Click(Sender: TObject);
var
  saa:ServiceSoap;
  str:string;
begin
  str := 'abc';
  saa := GetServiceSoap();
  edit1.text := saa.Confirm(str);
end;

谢谢！

[mantti]

在function GetServiceSoap(UseWSDL: Boolean=System.False; Addr: string=''): ServiceSoap;中，最好加上HTTPRIO，即
function GetServiceSoap(UseWSDL: Boolean=System.False; Addr: string=''; HTTPRIO: THTTPRIO = nil): ServiceSoap;
以前用的时候总感觉动态创建HTTPRIO会有问题，所以最好能在窗体上放一个HTTPRIO，调用的时候带过去

function GetServiceSoap(UseWSDL: Boolean=System.False; Addr: string=''; HTTPRIO: THTTPRIO = nil): ServiceSoap;
var
  RIO: THTTPRIO;
  defWSDL, defURL, defSvc, defPrt: string;
begin
  CoInitialize(nil);
  if HTTPRIO <> nil then
  begin
    With HTTPRIO do
    begin
      defWSDL = 'http://10.16.66.16/KiTest/service.asmx?wsdl';
      defURL  = 'http://10.16.66.16/KiTest/service.asmx';
      defSvc  = 'Service';
      defPrt  = 'ServiceSoap';
    end;
  end;

  Result := nil;
  if (Addr = '') then
  begin
    if UseWSDL then
      Addr := defWSDL
    else
      Addr := defURL;
  end;
  if HTTPRIO = nil then
    RIO := THTTPRIO.Create(nil)
  else
    RIO := HTTPRIO;
  try
    Result := (RIO as IWebServiceAPI);
    if UseWSDL then
    begin
      RIO.WSDLLocation := Addr;
      RIO.Service := defSvc;
      RIO.Port := defPrt;
    end else
      RIO.URL := Addr;
  finally
    if (Result = nil) and (HTTPRIO = nil) then
      RIO.Free;
  end;
  CoUnInitialize;
end;

[qiuqiu505]

这个问题楼主是怎么解决的？

[pal2003]

InvRegistry.RegisterInvokeOptions(TypeInfo(Service1Soap), ioDocument);