VC6.0通过soap3.0和MSXML4.0访问创建的WebService

对soap3.0sdk研究的一点心得，具体VC6.0代码如下

#include <StdAfx.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;  //你机器得安装SOAP Toolkit3.0 ，1.0时，用using namespace时报错


void query(char *EndPointURL,char *NameSpace,char *method,int argv_len,char* args[],char* argv[])
{

ISoapSerializerPtr Serializer; 
ISoapReaderPtr Reader; 
ISoapConnectorPtr Connector; 

// Connect to the service 

Connector.CreateInstance(__uuidof(HttpConnector30)); 
Connector->Property["EndPointURL"] = EndPointURL;//"http://localhost/WebService1/Service1.asmx"; 
Connector->Connect();//和服务器连接 

// Begin message 
Connector->Property["SoapAction"] = _bstr_t(NameSpace)+"/"+_bstr_t(method);//"http://xin.org/getIP";
Connector->BeginMessage(); 

Serializer.CreateInstance(__uuidof(SoapSerializer30)); 

// 将serializer连接到connector的输入字符串 
Serializer->Init(_variant_t((IUnknown*)Connector->InputStream)); 

// 创建SOAP消息 
Serializer->StartEnvelope("soap","",""); 
Serializer->StartBody("body"); 
Serializer->StartElement(method,NameSpace,"","");//命名空间必须有

for(int i=0;i<argv_len;i++)
{
    Serializer->StartElement(args[i],NameSpace,"","");
    Serializer->WriteString(argv[i]);
    Serializer->EndElement();
}
Serializer->EndElement();

Serializer->EndBody(); 
Serializer->EndEnvelope(); 

// Send the message to the web service 
Connector->EndMessage(); 

// 读取响应 
Reader.CreateInstance(__uuidof(SoapReader30)); 

// 将reader联接到connector的输出字符串 
Reader->Load(_variant_t((IUnknown*)Connector->OutputStream), ""); 

//cout<<(const char *)Reader->RpcResult->text); 
//const char * str = (const char *)Reader->RpcResult->firstChild->text; 

printf("Answer: %s\n",(const char*)Reader->RpcResult->xml);
}
int main()
{ CoInitialize(NULL);  
    //for(int i=0;i<100;i++)
    {
        char *EndPointURL="http://127.0.0.1/WebService1/Service2.asmx";
        char *NameSpace="http://xin.org/service2";
        char *method="add";
        int argv_len=2;
        char* args[2]={"x","y"
        };
        char* argv[2]={"3","4"};
        query(EndPointURL,NameSpace,method,argv_len,args,argv);        
      
    } CoUninitialize();
   getchar();
   return 0;
}