ATLServer WebService 如何返回任意内容的 SOAP 消息给客户 ——

发布时间：2020-12-17 02:52:31 所属栏目：安全来源：网络整理

导读：ATLServer WebService 如何返回任意内容的 SOAP 消息给客户 cheungmine@gmail.com 2007-3-24 ??????（上篇文章存在问题，这里是可用的版本。）如果想在下面的WebService方法中返回任意SOAP错误消息给客户，应该这样做： // 宏定义，错误信息只支持英文半角

ATLServer WebService 如何返回任意内容的 SOAP 消息给客户

cheungmine@gmail.com

2007-3-24

??????（上篇文章存在问题，这里是可用的版本。）

如果想在下面的WebService方法中返回任意SOAP错误消息给客户，应该这样做：

// 宏定义，错误信息只支持英文半角
#define SOAP_FAULT(errCode,wszDetail)??? m_fault.m_soapErrCode = errCode;? m_fault.m_strDetail = wszDetail

???? [ soap_method ]

???? HRESULT HelloWorld(/*[in]*/ BSTR bstrInput,/*[out,retval]*/ BSTR *bstrOutput)

???? {

???????? CComBSTR bstrOut(L"Hello ");

???????? bstrOut += bstrInput;

???????? *bstrOutput = bstrOut.Detach();

????????

?????????SOAP_FAULT(SOAP_E_SERVER,? L"Do you love me,my girl");

???????? return E_FAIL;

??? }

然而，m_fault参数未定义，我们需要把它加入到atlsoap.h文件中。打开atlsoap.h，加入下面的代码，注意红色部分是我加的，其他地方不要改变：

template? < typename?THandler >
class ?CSoapHandler?:?
???? public ?CSoapRootHandler,?
???? public ?CComObjectRootEx < CComMultiThreadModel > ,
???? public ?IRequestHandlerImpl < THandler >
{
protected :
????HTTP_CODE????m_hcErr;
????CHttpResponse? * m_pHttpResponse;

???? // ?heap?for?SOAP?requests
????CWin32Heap????m_heap;

???? // ?default?heap?is?COM?heap?(SOAP?Servers?can?double?as?COM?objects)
????CComHeap????m_comHeap;

???? //?CL2:?这里添加成员用来返回用户定制的错误,而不是根据HRESULT值生成错误
????CSoapFault??m_fault;
public :

????BEGIN_COM_MAP(CSoapHandler < THandler > )
????????COM_INTERFACE_ENTRY(ISAXContentHandler)
????????COM_INTERFACE_ENTRY(IRequestHandler)
????END_COM_MAP()

????CSoapHandler()
????????:m_pHttpResponse(NULL),?m_hcErr(HTTP_SUCCESS)
????{
????????SetMemMgr( & m_comHeap);
????}

???? void ?SetHttpError(HTTP_CODE?hcErr)
????{
????????m_hcErr? = ?hcErr;
????}

????HRESULT?SoapFault(
????????SOAP_ERROR_CODE?errCode,?
???????? const ?wchar_t? * wszDetail,
???????? int ?cchDetail)
????{
????????ATLASSUME(?m_pHttpResponse? != ?NULL?);

????????SetHttpError(AtlsHttpError( 500 ,?SUBERR_NO_PROCESS));

????????m_pHttpResponse -> ClearHeaders();
????????m_pHttpResponse -> ClearContent();
????????m_pHttpResponse -> SetContentType( " text/xml " );
????????m_pHttpResponse -> SetStatusCode( 500 );
????????
???????? if?(m_fault.m_soapErrCode?== ?SOAP_E_UNK)
????????{
???????????? if ?(wszDetail? != ?NULL)
????????????{
???????????????? if ?(cchDetail? < ? 0 )
????????????????{
????????????????????cchDetail? = ?( int )?wcslen(wszDetail);
????????????????}

????????????????_ATLTRY
????????????????{
????????????????????m_fault.m_strDetail.SetString(wszDetail,?cchDetail);
????????????????}
????????????????_ATLCATCHALL()
????????????????{
????????????????????ATLTRACE(?_T( " CSoapHandler::SoapFault?--?out?of?memory. " ?)?);

???????????????????? return ?E_OUTOFMEMORY;
????????????????}
????????????}

????????????m_fault.m_soapErrCode? = ?errCode;
????????}

????????m_fault.GenerateFault(m_pHttpResponse);

???????? return ?S_OK;
????}

??? ... ...

以上就这些就可以了，运行就看到返回的错误信息“<Detail>Do you love me,my girl</Detail>”。

我使用VS2005+ATL8来写WebService。用其他语言写的WebService不知道存在这些问题不。如果要用好ATL Server，对它的代码做些修改是很正常的。我修改了它很多默认的实现，比如CSessionStateService、CPerfMon等类。

（编辑：李大同）

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