delphi用webservice

2021-09-20 10:43:11

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

码农公寓

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