VC6 访问WebService的错误

almser 2006-10-20 02:48:27

在vc6里调用WebService，先安装soapsdk3.0，
源代码如下

string _wsURL = "http://127.0.0.1/WebServiceCom/Service1.asmx";
string _wsNameSapce = "http://127.0.0.1/WebServiceCom/";
string _wsMethodName = "Hello";

try
{
HRESULT hr = CoInitialize(NULL);//初始化com环境
if(FAILED(hr))
{
//出错了
}

ISoapSerializerPtr Serializer;
ISoapReaderPtr Reader;
ISoapConnectorPtr Connector;

//连接到WebService
hr = Connector.CreateInstance(__uuidof(HttpConnector30));
if(FAILED(hr))
{
//创建com对象出错，一般是因为没有安装com
}

Connector->Property["EndPointURL"] = _wsURL.c_str();
Connector->Connect();
Connector->Property["SoapAction"] = ( _wsNameSapce + _wsMethodName).c_str(); //

//开始创建webservice的请求Soap包
Connector->BeginMessage();
hr = Serializer.CreateInstance(__uuidof(SoapSerializer30));
if(FAILED(hr))
{
//创建com对象出错，一般是因为没有安装com
}
Serializer->Init(_variant_t((IUnknown*)Connector->InputStream));
Serializer->StartEnvelope("SOAP", "http://schemas.xmlsoap.org/soap/envelope/", "");
Serializer->SoapAttribute("xsi", "", "http://www.w3.org/2001/XMLSchema-instance", "xmlns");
Serializer->SoapAttribute("xsd", "", "http://www.w3.org/2001/XMLSchema", "xmlns");

Serializer->StartBody(L"NONE");
Serializer->StartElement(_wsMethodName.c_str(), _wsNameSapce.c_str(), "NONE", "");

Serializer->StartElement(L"strName", "", "NONE", "");
Serializer->SoapAttribute("xsi:type", "", "xsd:string", "");
Serializer->WriteString(strName.c_str());
Serializer->EndElement();

/*
Serializer->StartElement(L"strName2", "", "NONE", "");
Serializer->SoapAttribute("xsi:type", "", "xsd:string", "");
Serializer->WriteString(strName2.c_str());
Serializer->EndElement();
*/

Serializer->EndElement();

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

//就这句会报错！
Connector->EndMessage();

//解析返回的soap包
hr = Reader.CreateInstance(__uuidof(SoapReader30));
if(FAILED(hr))
{
//创建com对象出错，一般是因为没有安装com
}
Reader->Load(_variant_t((IUnknown*)Connector->OutputStream), "");
string strResult((const char*)Reader->RpcResult->text);

return strResult;

}
catch(...)
{
sss = GetLastError();
//got a exception
}
CoUninitialize();

return "error";
---------------------------------------
webService开在本机，工作正常，但是调用webService的接口Hello时，在Connector->EndMessage();出现异常。
请问是什么原因，怎么解决？

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