WebDAV方式访问Exchange 2003收件箱程序
public DataTable GetUnReadMail()
{
string url = "http://ip/exchange/"; //指定Exchange服务器地址
System.Net.HttpWebRequest Request;
System.Net.WebResponse Response;
System.Net.CredentialCache MyCredentialCache;
string strUserName = "administrator"; //指定登录的用户名
string strRootURI = url + strUserName.Trim() + "/收件箱/"; //得到要访问邮箱的WebDAV地址
string strPassword = "test"; //指定该用户的密码
string strDomain = "test"; //指定域名
string strQuery = "";
byte[] bytes = null;
System.IO.Stream RequestStream = null;
System.IO.Stream ResponseStream = null;
XmlDocument ResponseXmlDoc = null;
XmlNodeList HrefNodes = null;
XmlNodeList SizeNodes = null;
int count = 0;
try
{
// 用SQL查询WebDAV返回结果中的unreadcount节点.
//strQuery = "<?xml version=\"1.0\"?><D:searchrequest xmlns:D = \"DAV:\" >"
// + "<D:sql>SELECT \"DAV:displayname\",\"urn:schemas:httpmail:subject\",\"urn:schemas:httpmail:unreadcount\" FROM \"" + strRootURI + "\""
// + "</D:sql></D:searchrequest>";
strQuery = "<?xml version=\"1.0\"?><D:searchrequest xmlns:D = \"DAV:\" >"
+ "<D:sql>SELECT \"urn:schemas:httpmail:importance\",\"urn:schemas:httpmail:from\",\"urn:schemas:httpmail:read\",\"urn:schemas:httpmail:datereceived\",\"urn:schemas:httpmail:subject\",\"urn:schemas:httpmail:hasattachment\","
+ "\"urn:schemas:httpmail:date\","
+ "\"DAV:contentclass\",\"DAV:getcontentlength\",\"DAV:displayname\""
+ "FROM \"" + strRootURI + "\""
+ "WHERE \"DAV:ishidden\" = false AND \"DAV:isfolder\" = false"
+ "</D:sql></D:searchrequest>";
// 创建新的CredentialCache对象，构建身份凭据
MyCredentialCache = new System.Net.CredentialCache();
MyCredentialCache.Add(new System.Uri(strRootURI),
"NTLM",
new System.Net.NetworkCredential(strUserName, strPassword, strDomain)
);
// Create the HttpWebRequest object.
Request = (System.Net.HttpWebRequest)HttpWebRequest.Create(strRootURI);
// 指定HttpWebRequest的身份凭据，此处为关键所在。如果使用之前
// 创建的MyCredentialCache，则这个身份凭据是可以从Web服务器传递
// 到Exchange服务器的，但是这样带来的问题也很明显，就是不能够自
// 动获取当前登录到域的用户的身份。即便已经成功登录到域，那也只
// 能通过form再次输入用户名密码。因此，我在这里用的是
// Request.Credentials = CredentialCache.DefaultCredentials，
// 这样便可以获得当前用户的凭据，但是这样带来的问题便是上面提到的
// 身份凭据无法传递的问题，解决方法请关注下篇文章。
Request.Credentials = MyCredentialCache;
// 指定WebDAV的SEARCH方法
Request.Method = "SEARCH";
// Encode the body using UTF-8.
bytes = Encoding.UTF8.GetBytes((string)strQuery);
// Set the content header length. This must be
// done before writing data to the request stream.
Request.ContentLength = bytes.Length;
// Get a reference to the request stream.
RequestStream = Request.GetRequestStream();
// Write the SQL query to the request stream.
RequestStream.Write(bytes, 0, bytes.Length);
// Close the Stream object to release the connection
// for further use.
RequestStream.Close();
// Set the content type header.
Request.ContentType = "text/xml";
// Send the SEARCH method request and get the
// response from the server.
Response = (HttpWebResponse)Request.GetResponse();
// Get the XML response stream.
ResponseStream = Response.GetResponseStream();
// 创建XmlDocument对象，并获取收件箱的unreadcount节点的值
ResponseXmlDoc = new XmlDocument();
ResponseXmlDoc.Load(ResponseStream);
//HrefNodes = ResponseXmlDoc.GetElementsByTagName("a:displayname");
//SizeNodes = ResponseXmlDoc.GetElementsByTagName("d:unreadcount");
//for (int i = 0; i < HrefNodes.Count; i++)
//{
// if (HrefNodes.InnerText == "收件箱")
// count = int.Parse(SizeNodes.InnerText);
//}
//ResponseStream.Close();
//Response.Close();
XmlNodeList idNodes = ResponseXmlDoc.GetElementsByTagName("a:displayname");
XmlNodeList SenderNodes = ResponseXmlDoc.GetElementsByTagName("d:from");
XmlNodeList importanceNodes = ResponseXmlDoc.GetElementsByTagName("d:importance");
XmlNodeList contextclassNodes = ResponseXmlDoc.GetElementsByTagName("a:contentclass");
XmlNodeList readNodes = ResponseXmlDoc.GetElementsByTagName("d:read");
XmlNodeList datareceiveNodes = ResponseXmlDoc.GetElementsByTagName("d:datereceived");
XmlNodeList subjectNodes = ResponseXmlDoc.GetElementsByTagName("d:subject");
XmlNodeList getcontentlengthNodes = ResponseXmlDoc.GetElementsByTagName("a:getcontentlength");
XmlNodeList hasattachmentNodes = ResponseXmlDoc.GetElementsByTagName("d:hasattachment");
XmlNodeList hrefNodes = ResponseXmlDoc.GetElementsByTagName("a:href");
XmlNodeList dateNodes = ResponseXmlDoc.GetElementsByTagName("d:date");
DataTable dt = new DataTable();
dt.Columns.Add("Subject");
dt.Columns.Add("Href");
dt.Columns.Add("Time");
dt.Columns["Time"].DataType = Type.GetType("System.DateTime");
for (int j = 0; j < readNodes.Count; j++)
{
//if (readNodes.InnerText == "1")continue;//只取未读邮件
dt.Rows.Add(subjectNodes.InnerText, hrefNodes.InnerText, DateTime.Parse(datareceiveNodes.InnerText));
}
ResponseStream.Close();
Response.Close();
return dt;
}
catch
{
return null;
}
}
该方法来源于网络，近日用到收藏于此。
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