Delphi7调用vs.net写的WebService

这里不讨论WebService编写过程，只讨论Delphi如何调用，老鸟无需再看了

 

1，导入代理后，生成的代码如下

// ************************************************************************ //
// The types declared in this file were generated from data read from the
// WSDL File described below:
// WSDL     : http://localhost/WSDelphi/Service.asmx?WSDL
// Encoding : utf-8
// Codegen  : [wfDebug,wfUseSerializerClassForAttrs]
// Version  : 1.0
// (2006-10-20 13:18:21 - 1.33.2.5)
// ************************************************************************ //

unit Service;

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://tempuri.org/
  // soapAction: http://tempuri.org/%operationName%
  // transport : http://schemas.xmlsoap.org/soap/http
  // binding   : ServiceSoap
  // service   : Service
  // port      : ServiceSoap
  // URL       : http://localhost/WSDelphi/Service.asmx
  // ************************************************************************ //
  ServiceSoap = interface(IInvokable)
  ['{77573149-9C57-FA51-F11F-EFD527C91BD9}']
    function  HelloWorld: WideString; stdcall;
    function  GetName(const str: WideString): WideString; stdcall;
  end;

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

implementation

function GetServiceSoap(UseWSDL: Boolean; Addr: string; HTTPRIO: THTTPRIO): ServiceSoap;
const
  defWSDL = 'http://localhost/WSDelphi/Service.asmx?WSDL';
  defURL  = 'http://localhost/WSDelphi/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;
  if HTTPRIO = nil then
    RIO := THTTPRIO.Create(nil)
  else
    RIO := HTTPRIO;
  try
    Result := (RIO as ServiceSoap);
    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(ServiceSoap), 'http://tempuri.org/', 'utf-8');
  InvRegistry.RegisterDefaultSOAPAction(TypeInfo(ServiceSoap), 'http://tempuri.org/%operationName%');
  InvRegistry.RegisterInvokeOptions(TypeInfo(ServiceSoap),ioDocument)//带参数调用

end.

 

2，拖拽一个HttpRio控件到窗体上，拖拽两个Button，编写按钮单击事件，源码如下

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, InvokeRegistry, StdCtrls, Rio, SOAPHTTPClient;

type
  TForm1 = class(TForm)
    HTTPRIO1: THTTPRIO;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses Service;

 

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  strWSDL:string;
  Iservice:ServiceSoap;
begin
  HTTPRIO1.WSDLLocation:='http://localhost/WSDelphi/Service.asmx?WSDL';
  HTTPRIO1.Port := 'ServiceSoap';
  Iservice:= HTTPRIO1 as ServiceSoap;
  Showmessage(Iservice.HelloWorld());
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  Iservice:ServiceSoap;
  str1:WideString;
begin
  HTTPRIO1.WSDLLocation:='http://localhost/WSDelphi/Service.asmx?WSDL';
  HTTPRIO1.Port := 'ServiceSoap';
  Iservice:= HTTPRIO1 as ServiceSoap;
  str1 := 'ddd';
  showmessage(Iservice.GetName(str1));
end;

end.