delphi用webservice

delphi的webservice开发。

一、在已有的项目中，调用外部的webservice

1、根据向导建webservice，在项目中引入“WSDL Importer"。假设引入后生成的类的名字为”service"

2、对生成的service类做相应的修改。

2.1、如果webservice方法里的某些参数即是接收传入参数又是接收返回参数，在delphi里要对参数名字重新命名

如在用c#写的webservice的服务端方法是sr.Get_Delivery_Data_Over(sn, sjlx, ref err);
//默认生成的代码为
 procedure Get_Delivery_Data(const err: WideString; const data_str: TByteDynArray; const sn: Integer; const sjlx: WideString; out Get_Delivery_DataResult: Boolean; out err: WideString; out data_str: TByteDynArray; out sn: Integer); stdcall;
///要改成如下：
 procedure Get_Delivery_Data(const err1: WideString; const data_str1: TByteDynArray; const sn1: Integer; const sjlx: WideString; out Get_Delivery_DataResult: Boolean; out err: WideString; out data_str: TByteDynArray; out sn: Integer); stdcall;

2.2、 如果delphi调用c#写的webservice时，服务器端方法接收到delphi传过来的参数总是为空时，在delphi的service类的initialization下面加这名话

 InvRegistry.RegisterInvokeOptions(TypeInfo(ServiceSoap),ioDocument);   ///必需要加，不然传到c#写的webservice里的方法的参数值是空的

如下是service类的源代码

// ************************************************************************ //
// The types declared in this file were generated from data read from the
// WSDL File described below:
// WSDL     : http://fti.yndzyf.com/Service.asmx?wsdl
// Encoding : utf-
// Version  : 1.0
// (-- :: - 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//XMLSchema"
  // !:base64Binary    - "http://www.w3.org//XMLSchema"
  // !:int             - "http://www.w3.org//XMLSchema"
  // !:boolean         - "http://www.w3.org//XMLSchema"

  Websoap              = class;                 { "http://aitf.yndzyf.com/"[H] }

  // ************************************************************************ //
  // Namespace : http://aitf.yndzyf.com/
  // ************************************************************************ //
  Websoap = class(TSOAPHeader)
  private
    FUserName: WideString;
    FPassWord: WideString;
  published
    property UserName: WideString read FUserName write FUserName;
    property PassWord: WideString read FPassWord write FPassWord;
  end;

  // ************************************************************************ //
  // Namespace : http://aitf.yndzyf.com/
  // soapAction: http://aitf.yndzyf.com/%operationName%
  // transport : http://schemas.xmlsoap.org/soap/http
  // binding   : ServiceSoap
  // service   : Service
  // port      : ServiceSoap
  // URL       : http://fti.yndzyf.com/Service.asmx
  // ************************************************************************ //
  ServiceSoap = interface(IInvokable)
  ['{E00EB65B-7136-E473-42EF-D3135F25019F}']
    procedure Get_Delivery_Data(const err1: WideString; const data_str1: TByteDynArray; const sn1: Integer; const sjlx: WideString; out Get_Delivery_DataResult: Boolean; out err: WideString; out data_str: TByteDynArray; out sn: Integer); stdcall;
    procedure Get_Delivery_Data_Over(const sn: Integer; const sjlx: WideString; const err1: WideString; out Get_Delivery_Data_OverResult: Boolean; out err: WideString); stdcall;
    procedure Receive_data(const error1: WideString; const str: TByteDynArray; const sn: Integer; const sjlx: WideString; out Receive_dataResult: Boolean; out error: WideString); stdcall;
  end;

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

implementation

function GetServiceSoap(UseWSDL: Boolean; Addr: string; HTTPRIO: THTTPRIO;user:string;password:string): ServiceSoap;
const
  defWSDL = 'http://fti.yndzyf.com/Service.asmx?wsdl';
  defURL  = 'http://fti.yndzyf.com/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://aitf.yndzyf.com/', 'utf-8');
  InvRegistry.RegisterDefaultSOAPAction(TypeInfo(ServiceSoap), 'http://aitf.yndzyf.com/%operationName%');
  InvRegistry.RegisterHeaderClass(TypeInfo(ServiceSoap), Websoap, 'Websoap', '');
  RemClassRegistry.RegisterXSClass(Websoap, 'http://aitf.yndzyf.com/', 'Websoap');
  InvRegistry.RegisterInvokeOptions(TypeInfo(ServiceSoap),ioDocument);   ///必要要加，不然传到c#写的webservice里的值是空的
end.

3、调用

procedure Tform_smrk.bgetydClick(Sender: TObject);
var sql:string;
var err_fp,err1_fp,err_yjm,err1_yjm:Widestring;
data_fp,data_fp1,data_yjm,data_yjm1:TByteDynArray;
sn_fp,sn_fp1,sn_yjm,sn_yjm1:Integer;
flag_fp,flag_fp1,flag_yjm,flag_yjm1:boolean;
ws:webSoap;
svc:serviceSoap;
begin
       svc := HTTPRIO1 as ServiceSoap;
       ws:=websoap.Create;
       ws.UserName:=serviceName;///webservice的用户名和密码
       ws.PassWord:=servicePassword;
      (svc as ISOAPHeaders).Send(ws);
       svc.Get_Delivery_Data('',data_fp1,,'运单',flag_fp,err_fp,data_fp,sn_fp);
       (svc as ISOAPHeaders).Send(ws);///每次调用时都要重新设置用户和密码
       svc.Get_Delivery_Data('',data_yjm1,,'电子监管',flag_yjm,err_yjm,data_yjm,sn_yjm);
       if length(data_fp)> then///如果有运单
       begin
          ADOStoredProc1.ProcedureName:= 'p_insert_data';
          ADOStoredProc1.Parameters.Clear;
          ADOStoredProc1.Parameters.Refresh;
          ADOStoredProc1.Parameters.ParamByName('@data_str').Value:=data_fp;
          if length(data_yjm)>  then  ADOStoredProc1.Parameters.ParamByName('@data_str_yjm').Value:=data_yjm;
          ADOStoredProc1.Prepared;
          ADOStoredProc1.ExecProc;
end

要注意的是：1、每次调用webservice时要重新写一次(svc as ISOAPHeaders).Send(ws);，将webSoap和serviceSoap关联

2、上面的代码是从webservice取xml的二进制文件，然后将取出的二进制数据传入到存储过程p_insert_data里。用ADOStoreProc可以对存储过程传参数

时可以不考虑参数的类型，直接用ADOStoredProc1.Parameters.ParamByName('@data_str').Value:=data_fp赋值，在赋值前要ADOStoredProc1.Parameters.Refresh;不然不能对参数                          赋值成功。

3、HTTPRIO1 是控件THTTPRIO。控件要设置好URL=http://fti.yndzyf.com/Service.asmx?wsdl