我在使用ews（gSoap）时遇到了一些问题。
我有下一个代码：
ExchangeServiceBindingProxy *proxy = new ExchangeServiceBindingProxy(endpoint.c_str());
soap *pSoap = proxy->soap;
pSoap->userid = "Ivan1";
pSoap->passwd = "1";
pSoap->ntlm_challenge = "";
pSoap->authrealm = "Ursa-Minor";
pSoap->ssl_flags = SOAP_SSL_NO_AUTHENTICATION;
pSoap->keep_alive = true;
pSoap->mode = SOAP_IO_KEEPALIVE;
//get root folder ID
ns3__DistinguishedFolderIdType *dfit = new ns3__DistinguishedFolderIdType();
dfit->Id = ns3__DistinguishedFolderIdNameType__inbox;
//set the props that we want to retrieve
ns3__FolderResponseShapeType *frst = new ns3__FolderResponseShapeType();
frst->BaseShape = ns3__DefaultShapeNamesType__AllProperties;
//get folder
ns1__GetFolderType *gftRoot = new ns1__GetFolderType();
gftRoot->FolderIds = new ns3__NonEmptyArrayOfBaseFolderIdsType();
gftRoot->FolderIds->__size_NonEmptyArrayOfBaseFolderIdsType = 1;
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType = new __ns3__union_NonEmptyArrayOfBaseFolderIdsType();
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType->union_NonEmptyArrayOfBaseFolderIdsType.DistinguishedFolderId = dfit;
gftRoot->FolderIds = (ns3__NonEmptyArrayOfBaseFolderIdsType*)dfit;
gftRoot->FolderShape = frst;
__ns1__GetFolderResponse response;
int ret = proxy->GetFolder(gftRoot, response);
我正在使用OpenSSL和NTLM库（WITH_OPENSSL，WITH_NTLM）。
作为一个resault gSoap生成这个SOAP：
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:ns3="http://schemas.microsoft.com/exchange/services/2006/types"
xmlns:ns1="http://schemas.microsoft.com/exchange/services/2006/messages">
<SOAP-ENV:Header>
<ns3:RequestServerVersion SOAP-ENV:mustUnderstand="1" Version="Exchange2010">
</ns3:RequestServerVersion>
</SOAP-ENV:Header>
<SOAP-ENV:Body>
<ns1:GetFolder xsi:type="ns1:GetFolderType">
<ns1:FolderShape>
<ns3:BaseShape>AllProperties</ns3:BaseShape>
</ns1:FolderShape>
<ns1:FolderIds Id="inbox" xsi:type="ns3:DistinguishedFolderIdType"> </ns1:FolderIds>
</ns1:GetFolder>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
来自服务器的响应：
HTTP/1.1 500 Internal Server Error
Cache-Control: private
Transfer-Encoding: chunked
Content-Type: text/xml; charset=utf-8
Server: Microsoft-IIS/7.0
Set-Cookie: exchangecookie=88bb510ab2ef4191a42c6cf9aada1614; expires=Fri, 24-Oct-2014 09:45:45 GMT; path=/; HttpOnly
X-EwsPerformanceData: RpcC=0;RpcL=0;LdapC=0;LdapL=0;
X-AspNet-Version: 2.0.50727
X-Powered-By: ASP.NET
Date: Thu, 24 Oct 2013 09:45:45 GMT
Connection: close
5d0
<?xml version="1.0" encoding="utf-8"?>
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
<s:Body>
<s:Fault>
<faultcode xmlns:a="http://schemas.microsoft.com/exchange/services/2006/types">a:ErrorSchemaValidation</faultcode>
<faultstring xml:lang="en-US">The request failed schema validation: The xsi:type attribute value 'http://schemas.microsoft.com/exchange/services/2006/types:DistinguishedFolderIdType' is not valid for the element 'http://schemas.microsoft.com/exchange/services/2006/messages:FolderIds', either because it is not a type validly derived from the type in the schema, or because it has xsi:type derivation blocked.</faultstring>
<detail>
<e:ResponseCode xmlns:e="http://schemas.microsoft.com/exchange/services/2006/errors">ErrorSchemaValidation</e:ResponseCode>
<e:Message xmlns:e="http://schemas.microsoft.com/exchange/services/2006/errors">The request failed schema validation.</e:Message>
<t:MessageXml xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types">
<t:LineNumber>2</t:LineNumber>
<t:LinePosition>519</t:LinePosition>
<t:Violation>The xsi:type attribute value 'http://schemas.microsoft.com/exchange/services/2006/types:DistinguishedFolderIdType' is not valid for the element 'http://schemas.microsoft.com/exchange/services/2006/messages:FolderIds', either because it is not a type validly derived from the type in the schema, or because it has xsi:type derivation blocked.
</t:Violation>
</t:MessageXml>
</detail>
</s:Fault>
</s:Body>
</s:Envelope>
如您所见，问题在于
<ns1:FolderIds Id="inbox" xsi:type="ns3:DistinguishedFolderIdType"
服务器不希望在此行中看到xsi：type =“ns3：DistinguishedFolderIdType”。在原始SOAP中，它看起来像：
<FolderIds>
<DistinguishedFolderId Id="inbox" xmlns="http://schemas.microsoft.com/exchange/services/2006/types" />
</FolderIds>
因此。如何解决这个问题？
答案 0 :(得分：2)
伊斯塔，
首先，我不熟悉gSOAP，也不熟悉这种语法。事实上，我不希望回答你的问题，但我会试一试。话虽如此，gSOAP正在尝试创建EWS不支持的XML。我认为以下几行不正确，可能需要另外一行或两行：
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType->union_NonEmptyArrayOfBaseFolderIdsType.DistinguishedFolderId = dfit;
gftRoot->FolderIds = (ns3__NonEmptyArrayOfBaseFolderIdsType*)dfit;
我认为第二行是指示gSOAP使FolderIds元素成为它不应该的东西。看起来像FolderIds和DistinguishedFolderId元素结构存在某种混淆。
也许它应该看起来像：
ns3__NonEmptyArrayOfBaseFolderIdsType *fids = new ns3__NonEmptyArrayOfBaseFolderIdsType();
fids->DistinguishedFolderId = dfit
fids->__size_NonEmptyArrayOfBaseFolderIdsType = 1;
gftRoot->FolderIds = fids;
答案 1 :(得分：1)
好吧，我想出了如何让它发挥作用：
//get folder
ns1__GetFolderType *gftRoot = new ns1__GetFolderType();
gftRoot->FolderIds = new ns3__NonEmptyArrayOfBaseFolderIdsType();
gftRoot->FolderIds->__size_NonEmptyArrayOfBaseFolderIdsType = 1; //there we specify how many folders elements in FolderIds array
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType = new __ns3__union_NonEmptyArrayOfBaseFolderIdsType(); //create one element of array
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType->__union_NonEmptyArrayOfBaseFolderIdsType = 2; //this indicates, which class/structure are taken from union
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType->union_NonEmptyArrayOfBaseFolderIdsType.DistinguishedFolderId = dfit; //push dfit to element
gftRoot->FolderShape = frst;
__ns1__GetFolderResponse response;
int ret = proxy->GetFolder(gftRoot, response);