怎样使用VC调用webservice的接口

该文章转载自：http://blog.chinaunix.net/uid-23766031-id-2386454.html

以下为内容：

-----------------------------------------------------------------------------------------------------

网络上有很多这样的文章，但是无法一次性调试过，下面的程序完全是经过测试了的，可以使用，在这留档下。

代码如下：

/*begin*/

#include

#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* argv[])

{

ISoapSerializerPtr Serializer;

ISoapReaderPtr Reader;

ISoapConnectorPtr Connector;

// Connect to the service

Connector.CreateInstance(__uuidof(HttpConnector30));

Connector->Property["EndPointURL"] = EndPointURL;//接口位置

Connector->Connect();//和服务器连接

// Begin message

Connector->Property["SoapAction"] = _bstr_t(NameSpace)+"/"+_bstr_t(method);//方法名

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

{

   Serializer->StartElement(argv[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), "");

printf("Answer: %s\n",(const char*)Reader->RpcResult->xml);

}

int main(int argc, char* argv[])

{

CoInitialize(NULL);

    char *EndPointURL="接口地址";

    char *NameSpace="接口地址";

    char *method="call"; //接口提供的方法名

    int argv_len=4;

    char *argu[4]={"08SY20310982","100000", "error", "49"}; //参数，这里传递了4个，还可以增加

    query(EndPointURL,NameSpace,method,argv_len,argu);

    CoUninitialize();

    getchar();

    return 0;

} 

/*end*/