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計算機二級C技巧:VC6調(diào)用WebService

發(fā)布時間:2011-09-16 共1頁

  下面是個控制臺的樣例
  Toolkit3.0 終于給出VC6的樣例了,1.0只能看到VB和ASP的
  #include <stdio.h>
  #import "msxml4.dll"
  using namespace MSXML2;
  #import "C:\Program Files\Common Files\MSSoap\Binaries\mssoap30.dll" \
  exclude("IStream", "IErrorInfo", "ISequentialStream", "_LARGE_INTEGER", \
  "_ULARGE_INTEGER", "tagSTATSTG", "_FILETIME")
  using namespace MSSOAPLib30; //你機器得安裝SOAP Toolkit3.0 ,1.0時,用using namespace時報錯
  void Add()
  {
  ISoapSerializerPtr Serializer;
  ISoapReaderPtr Reader;
  ISoapConnectorPtr Connector;
  // Connect to the service.
  Connector.CreateInstance(__uuidof(HttpConnector30)); //HttpConnector30 失敗,無法這樣創(chuàng)建Connector,CXX0017 Error :Symbol “HttpConnector30“ not found(搖頭、嘆氣!)
  Connector->Property["EndPointURL"] = "http://MyServer/Soap3DocSamples/DocSample1/Server/DocSample1.wsdl"; //這個當然得改成您自己的拉
  Connector->Connect();
  // Begin the message.
  //Connector->Property["SoapAction"] = "uri:AddNumbers";
  Connector->Property["SoapAction"] = "http://tempuri.org/DocSample1/action/Sample1.AddNumbers";
  Connector->BeginMessage();
  // Create the SoapSerializer object.
  Serializer.CreateInstance(__uuidof(SoapSerializer30));
  // Connect the serializer object to the input stream of the connector object.
  Serializer->Init(_variant_t((IUnknown*)Connector->InputStream));
  // Build the SOAP Message.
  Serializer->StartEnvelope("","","");
  Serializer->StartBody("");
  Serializer->StartElement("AddNumbers","http://tempuri.org/DocSample1/message/","",""); //這是本地的Web Services,實際中要指定命名空間
  Serializer->StartElement("NumberOne","","","");
  Serializer->WriteString("5");
  Serializer->EndElement();
  Serializer->StartElement("NumberTwo","","","");
  Serializer->WriteString("10");
  Serializer->EndElement();
  Serializer->EndElement();
  Serializer->EndBody();
  Serializer->EndEnvelope();
  // Send the message to the XML Web service.
  Connector->EndMessage();
  // Read the response.
  Reader.CreateInstance(__uuidof(SoapReader30));
  // Connect the reader to the output stream of the connector object.
  Reader->Load(_variant_t((IUnknown*)Connector->OutputStream), "");
  // Display the result.
  printf("Answer: %s\n", (const char*)Reader->RpcResult->text);
  }
  int main()
  {
  CoInitialize(NULL);
  Add();
  CoUninitialize();
  return 0;
  }
  更改 EndPointURL 屬性的值. 在URL里指定你的服務器名.
  OK
  總結(jié)一下必要的關鍵步驟
  1.導入類型庫
  2.需要創(chuàng)建一個SoapConnector
  3.下一步創(chuàng)建SoapSerializer
  4.下一步把消息附加到SoapConnector的輸入流
  5.下一步讀取結(jié)果.要讀取服務器的回復,客戶端應用需要使用SoapReader,
  6.SoapReader被連接到SoapConnector輸出流
  7.用IXMLDOMElement對象可以從SoapReader里讀到服務器的回復。

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