我在这里问你如何：当使用OpenPop.Net库时，如何将POP服务器中的消息中的唯一ID存储到我的数据库中？这是“FetchMessage”函数：
public static List<OpenPop.Mime.Message> FetchUnseenMessages(string hostname, int port, bool useSsl, string username, string password, List<string> seenUids)
{
// The client disconnects from the server when being disposed
using (Pop3Client client = new Pop3Client())
{
// Connect to the server
client.Connect(hostname, port, useSsl);
// Authenticate ourselves towards the server
client.Authenticate(username, password, AuthenticationMethod.UsernameAndPassword);
// Fetch all the current uids seen
List<string> uids = client.GetMessageUids();
// Create a list we can return with all new messages
List<OpenPop.Mime.Message> newMessages = new List<OpenPop.Mime.Message>();
// All the new messages not seen by the POP3 client
for (int i = 0; i < uids.Count; i++)
{
string currentUidOnServer = uids[i];
if (!seenUids.Contains(currentUidOnServer))
{
// We have not seen this message before.
// Download it and add this new uid to seen uids
// the uids list is in messageNumber order - meaning that the first
// uid in the list has messageNumber of 1, and the second has
// messageNumber 2. Therefore we can fetch the message using
// i + 1 since messageNumber should be in range [1, messageCount]
OpenPop.Mime.Message unseenMessage = client.GetMessage(i + 1);
// Add the message to the new messages
newMessages.Add(unseenMessage);
// Add the uid to the seen uids, as it has now been seen
seenUids.Add(currentUidOnServer);
}
}
// Return our new found messages
return newMessages;
}
}
这里是“GetEMail”功能的一部分（调用上面的功能）（评论也用葡萄牙文...）：
//primeiro obter informação de contas
SqlCeConnection Con = conecao.ligardb(); //ligar a base de dados
Con.Open();
string myQuery = "SELECT * FROM Contas"; //construir query
SqlCeCommand myCommand = new SqlCeCommand(myQuery, Con); //construir comando
SqlCeDataReader myDataReader = myCommand.ExecuteReader(); //executar comando e armazenar informações
while (myDataReader.Read()) //ler data reader repetidamente
{
int tipo = Convert.ToInt32(myDataReader["Tipo"]); //obter tipo de conta
bool seguro = Convert.ToBoolean(myDataReader["Seguro"]); //obter se e seguro ou nao
int idConta = Convert.ToInt32(myDataReader["ID"]); //obter id de conta
if (tipo == 1 && seguro == false) //POP3 sem SSL
{
string hostname = Convert.ToString(myDataReader["Serv_Recep"]); //obter servidor de recepçao
string user = Convert.ToString(myDataReader["User"]); //obter id de utilizador
string pass = Convert.ToString(myDataReader["Pass"]); //obter pass de utilizador
List<string> Uids = new List<string>(); //lista para obter e-mails ja obtidos
//Obter pasta
string query_pasta = "SELECT id FROM Pastas WHERE idContas=@id AND Nome=@nome";
SqlCeCommand cmd_pasta = new SqlCeCommand(query_pasta, Con);
cmd_pasta.Parameters.AddWithValue("@id", idConta);
cmd_pasta.Parameters.AddWithValue("@nome", "Recebidas");
SqlCeDataReader dr_pasta = cmd_pasta.ExecuteReader();
dr_pasta.Read();
int idPasta = Convert.ToInt32(dr_pasta["id"]);
//obrer e-mails ja obtidos
string query = "SELECT Uids FROM Mensagens WHERE Conta=@id AND Pasta=@pasta"; //contruir query
SqlCeCommand command = new SqlCeCommand(query, Con); //construir comando
//atribuir parametros
command.Parameters.AddWithValue("@id", idConta);
command.Parameters.AddWithValue("@pasta", idPasta);
SqlCeDataReader datareader = command.ExecuteReader(); //executar e ler comando
while (datareader.Read()) //ler datareader
{
string ids = Convert.ToString(datareader["Uids"]); //obter uid
Uids.Add(ids); //adicionar uid
}
List<OpenPop.Mime.Message> NewMessage = new List<OpenPop.Mime.Message>(); //criar lista de mensagens
NewMessage = FetchUnseenMessages(hostname, 110, false, user, pass, Uids); //obter mensagens
for (int y = 0; y < NewMessage.Count; y++)
{
//Guardar mensagem em disco
string file_name = NewMessage[y].Headers.MessageId;
file_name = file_name + ".eml";
string path = System.Environment.GetFolderPath(Environment.SpecialFolder.Personal) + "\\izzy_mail\\" + Convert.ToString(myDataReader["Endereço"]) + "\\Recebidos\\"; //Criar directorioa de destino do .eml
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
path = path + file_name;
FileStream File = System.IO.File.Create(path);
NewMessage[y].Save(File);
//Guardar na base de dados
string assunto = NewMessage[y].Headers.Subject;//obter assunto
string origem = NewMessage[y].Headers.From.Address; //obter origem
string uid = NewMessage[y].Headers.MessageId; //obter id da mensagem
//criar nova query
string query_ins = "INSERT INTO Mensagens (Assunto, De, Pasta, Uri, Uids, Conta) VALUES (@assunto, @de, @pasta, @uri, @uid, @id)"; //contruir query
SqlCeCommand cmd_ins = new SqlCeCommand(query_ins, Con); //construir comando
//parametrizar o comando
cmd_ins.Parameters.AddWithValue("@assunto", assunto);
cmd_ins.Parameters.AddWithValue("@de", origem);
cmd_ins.Parameters.AddWithValue("@id", idConta);
cmd_ins.Parameters.AddWithValue("@pasta", idPasta);
cmd_ins.Parameters.AddWithValue("@uid", uid);
cmd_ins.Parameters.AddWithValue("@uri", path);
cmd_ins.ExecuteNonQuery(); //Executar insert
}
}
else if
所以任何人都知道如何解决我的问题？
提前致谢...
答案 0 :(得分：1)
建立数据库连接：
protected void Page_Load(object sender, EventArgs e)
{
//connection to db;
}
创建以下存储过程：
CREATE PROCEDURE dbo.getAllSeenUuids
AS
SELECT uuid FROM seenUuids
RETURN
CREATE PROCEDURE dbo.saveToSeenUuids
(@seenUuid varchar(50))
AS
INSERT INTO seenUuids (uuid) VALUES (@seenUuid)
RETURN
将以下内容添加到函数FetchUnseenMessages：
DataSet ds = new DataSet();
ds = DB.ExecuteQuery_SP("getAllSeenUuids");
List<string> uuids = pop3Client.GetMessageUids();
List<string> listSeenUuids = new List<string>();
List<string> newListSeenUuids = new List<string>();
List<Message> newMessages = new List<Message>();
List<string> listUnreadUuids = new List<string>();
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
listSeenUuids.Add(ds.Tables[0].Rows[i][0].ToString());
}
for (int i = uuids.Count - 1; i >= 0; i--)
{
if (!listSeenUuids.Contains(uuids[i]))
{
Message unseenMessage = pop3Client.GetMessage(i + 1);
newMessages.Add(unseenMessage);
object[,] parArray = new object[,] { { "@seenUuid", uuids[i] } };
//Call Stored Procedure_SP("saveToSeenUuids", parArray);
}
}
答案 1 :(得分：1)
我创建了一个既包含uid又包含消息的结构：
private struct mailwithuid
{
public OpenPop.Mime.Message mail;
public string uid;
public mailwithuid(OpenPop.Mime.Message _mail,string _uid)
{
mail = _mail;
uid = _uid;
}
}
并修改了FetchUnseenMessages（）函数：
private List<mailwithuid> FetchUnseenMessages(string hostname, int port, bool useSsl, string username, string password, List<string> seenUids)
{
using (Pop3Client client = new Pop3Client())
{
client.Connect(hostname, port, useSsl);
client.Authenticate(username, password);
List<string> uids = client.GetMessageUids();
List<mailwithuid> newMessages = new List<mailwithuid>();
for (int i = 0; i < uids.Count; i++)
{
string currentUidOnServer = uids[i];
if (!seenUids.Contains(currentUidOnServer))
{
OpenPop.Mime.Message unseenMessage = client.GetMessage(i + 1);
newMessages.Add(new mailwithuid(unseenMessage, currentUidOnServer));
seenUids.Add(currentUidOnServer);
}
}
return newMessages;
}
}
最后，我可以从代码中访问消息和uid：
List<mailwithuid> newmessages = FetchUnseenMessages("x", 110, false, "x@x", "x", volt);
foreach (mailwithuid u2 in newmessages)
{
OpenPop.Mime.Message u = u2.mail;
string uid = u2.uid;
}
答案 2 :(得分：0)
所以，在Ben的帮助下，我来到了这个解决方案：
在FetchUnseenMessages（）函数中的newMessage.Add（）之后添加了以下代码：
Uid.Add（currentUidOnServer）;
代替
string uid = NewMessage [y] .Headers.MessageId; // obter id da mensagem
使用：
string uid = Uid[y]; //obter id da mensagem
现在它有效！