IMAP编码的电子邮件
IMAP编码的电子邮件
提问于 2011-08-11 20:47:13
我正在使用Rohit Joshi's IMAP library访问IMAP电子邮件帐户。
到目前为止，我有一个程序可以连接到邮件服务器，检索所有未读的消息，并将它们保存在一个XML文件中。我的问题是，一些消息返回时是可读的，而一些消息是编码的，无法读取。
可读性：
<Part ID="1">
- <Part ID="1.1">
<DATA>Please respond if you receive this =20 Thanks =20 =20 *******=20 *************=20 =20 </DATA> 无法读取：
<Part ID="1">
<DATA>SGVsbG8gRGVhbGVyIENhciBTZWFyY2gsCgogV2UgaGF2ZSBiZWVuIHJlcXVlc3RlZCBieSBMT1cg Q09VTlRSWSBNT1RPUlMgdG8gcmVjZWl2ZSB0aGVpciB2ZWhpY2xlCmludmVudG9yeSBkYXRhIGZy b20geW91IGZvciBFdmVyeUNhckxpc3RlZC5jb20uCiBEYXRhIHNob3VsZCBiZSBzZW50IHRvIHlv dXIgRE1pIERhdGEgJiBNZWRpYSBTdG9yZSAoYWthIC0gRGVhbGVyIFBvcnRhbCkKZnRwIGFjY291 bnQuCgogKioqKiogKioqKioKCiAqKiogKioqCgogSWYgcG9zc2libGUsIHBsZWFzZSBzZW5kIGFs bCBhdmFpbGFibGUgdmVoaWNsZSBpbnZlbnRvcnkgZGF0YSBhdCB0aGlzCnRpbWUuIFRoaXMgd2ls bCBhbGxvdyB1cyB0byBlbnN1cmUgYW55IGZ1dHVyZSBhZGp1c3RtZW50cyB0byB0aGUgZGF0YSB3 ZQpleHBvcnQgYXJlIGVhc2lseSBhY2NvbXBsaXNoZWQgd2l0aG91dCBoYXZpbmcgdG8gcmVxdWVz dCBhIGNoYW5nZSB0byB5b3VyCmV4cG9ydC4gUGxlYXNlIGRvIG5vdCBzZW5kIGltYWdlcyB1bmxl c3MgaW1hZ2VzIGFyZSByZXF1ZXN0ZWQgYmVsb3cuCgogRGVhbGVyIFBvcnRhbCBJRDogRFAzNzgy NQogTE9XIENPVU5UUlkgTU9UT1JTCiAxIEJsdWZmdG9uIFJkLgogQmx1ZmZ0b24sIFNDIDI5OTEw CgoKIENvbnRhY3QgSW5mb3JtYXRpb24gb24gUmVjb3JkCiBDb250YWN0IE5hbWU6IE1pa2UgQ29k eQogQ29udGFjdCBQaG9uZTogODQzLTgxNS01MTAwCiBDb250YWN0IEUtTWFpbDogbG93Y291bnRy eW1vdG9yc0B5YWhvby5jb20KCiBSZXF1ZXN0aW5nIFByb2plY3Q6IEV2ZXJ5Q2FyTGlzdGVkLmNv bQogSW1hZ2VzIFJlcXVlc3RlZDogKipZZXMqKgogRXhwb3J0IFdlYnNpdGU6IGV2ZXJ5Y2FybGlz dGVkLmNvbQoKIFdoaWxlIHRoZSBkYXRhIGlzIGluaXRpYWxseSByZXF1ZXN0ZWQgZm9yIEV2ZXJ5 Q2FyTGlzdGVkLmNvbSwgdGhlIGRhdGEKbWF5IHBvdGVudGlhbGx5IGJlIHNlbnQgdG8gYW55IHBy b2plY3Qgc2VydmljZWQgYnkgb3VyIERhdGEgJgpNZWRpYSBTdG9yZQplbnZpcm9ubWVudCBpbiB0 aGUgZnV0dXJlLgoKIElmIHBvc3NpYmxlIHBsZWFzZSBsZXQgdXMga25vdyB3aGVuIHdlIHNob3Vs ZCBleHBlY3QgZGF0YSBmb3IgdGhpcwpkZWFsZXJzaGlwLgogVGhhbmsgeW91LAoKIERpZ2l0YWwg TW90b3J3b3JrcywgSW5jLgogRGF0YSAmIE1lZGlhIFN0b3JlL0RlYWxlciBQb3J0YWwgL1RoaXJk IFBhcnR5IFN1cHBvcnQKW0xJTks6IG1haWx0bzp0aGlyZHBhcnR5c3VwcG9ydEBkaWdpdGFsbW90 b3J3b3Jrcy5jb21dCnRoaXJkcGFydHlzdXBwb3J0QGRpZ2l0YWxtb3RvcndvcmtzLmNvbQogKDUx MikgNDkzLTg4MzMKClRoaXMgbWVzc2FnZSBhbmQgYW55IGF0dGFjaG1lbnRzIGFyZSBpbnRlbmRl ZCBvbmx5IGZvciB0aGUgdXNlIG9mIHRoZSBhZGRyZXNzZWUgYW5kIG1heSBjb250YWluIGluZm9y bWF0aW9uIHRoYXQgaXMgcHJpdmlsZWdlZCBhbmQgY29uZmlkZW50aWFsLiBJZiB0aGUgcmVhZGVy IG9mIHRoZSBtZXNzYWdlIGlzIG5vdCB0aGUgaW50ZW5kZWQgcmVjaXBpZW50IG9yIGFuIGF1dGhv cml6ZWQgcmVwcmVzZW50YXRpdmUgb2YgdGhlIGludGVuZGVkIHJlY2lwaWVudCwgeW91IGFyZSBo ZXJlYnkgbm90aWZpZWQgdGhhdCBhbnkgZGlzc2VtaW5hdGlvbiBvZiB0aGlzIGNvbW11bmljYXRp b24gaXMgc3RyaWN0bHkgcHJvaGliaXRlZC4gSWYgeW91IGhhdmUgcmVjZWl2ZWQgdGhpcyBjb21t dW5pY2F0aW9uIGluIGVycm9yLCBwbGVhc2Ugbm90aWZ5IHVzIGltbWVkaWF0ZWx5IGJ5IGUtbWFp bCBhbmQgZGVsZXRlIHRoZSBtZXNzYWdlIGFuZCBhbnkgYXR0YWNobWVudHMgZnJvbSB5b3VyIHN5 c3RlbS4K </DATA> 这是我的代码。任何关于我需要做什么，使电子邮件可读性的帮助将不胜感激。
//Connect to the Mail Server
Imap oImap = new Imap();
oImap.Login(ConfigurationSettings.AppSettings["emailServer"], ConfigurationSettings.AppSettings["emailUser"], ConfigurationSettings.AppSettings["emailPass"]);
//Select the INBOX Folder
oImap.SelectFolder("INBOX");
//Get all Unread messages
ArrayList msgList = new ArrayList();
string[] searchData = new string[1];
searchData[0] = "unseen";
oImap.SearchMessage(searchData, false, msgList);
MemoryStream stm = new MemoryStream(); //using a memory stream buffer for XmlTextWrite to write
XmlTextWriter oXmlWriter = new XmlTextWriter(stm, System.Text.Encoding.UTF8);
oXmlWriter.Formatting = Formatting.Indented;
oXmlWriter.WriteStartDocument(true);
oXmlWriter.WriteStartElement("Emails");
for (int i = 1; i < msgList.Count; i++)
{
oXmlWriter.WriteStartElement("Message");
oXmlWriter.WriteAttributeString("UID", msgList[i].ToString());
try
{
oImap.FetchMessage(msgList[i].ToString(), oXmlWriter, true);
}
catch (Exception e)
{
}
oXmlWriter.WriteEndElement();
}
oXmlWriter.WriteEndElement();
oXmlWriter.WriteEndDocument();
oXmlWriter.Flush();
stm.Seek(0, SeekOrigin.Begin); //have to move the offset to zero to read from the beginning of the memory stream
XmlTextReader xr = new XmlTextReader(stm);
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(xr);
stm.Flush();
xr.Close();
stm.Close();
oXmlWriter.Close();
oXmlWriter = null;
xmldoc.Save("email.xml");
Console.WriteLine(xmldoc.ToString());
oImap.LogOut();回答 1
Stack Overflow用户
发布于 2011-08-11 20:58:34
文本以Base64格式编码。您可以使用以下函数来解码它：
public string DecodeBase64(string s)
{
byte[] buf = Convert.FromBase64String(s);
return System.Text.Encoding.UTF8.GetString(buf);
}还要注意的是，电子邮件包含的换行符不是Windows格式的，但您可以这样解决：
resultStr = DecodeBase64(emailStr).Replace("\n", System.Environment.NewLine);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/7026101
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