Delphi7调用vs.net写的WebService

最新推荐文章于 2016-02-29 09:58:24 发布

原创最新推荐文章于 2016-02-29 09:58:24 发布 · 1.9k 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#webservice #delphi #types #button #service #interface

本文介绍使用Delphi调用WebService的方法。通过导入代理并利用HTTPRIO组件，演示了如何实现无参数及带参数的WebService调用。适用于Delphi开发者学习参考。

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.