利用邮件对象实现发送QQ日志以及检测用户是否开通SMTP功能

本文介绍两个QQ应用中有意思的小功能，都是基于邮件对象实现的功能，一个是利用.NET 内置类MailMessage来实现日志发送功能，一个是利用Lumisoft.NET组件类来检测用户是否开通了SMTP功能。

想看看两个功能的实现效果。

 



编辑并发送QQ日志的代码很简单，就是简单利用MailMessage对象来实现的，类似发送邮件一样，详细代码如下所示：

            try
            {
                MailMessage mail = new MailMessage();
                mail.From = new MailAddress(string.Format("{0}@qq.com", Portal.gc.QQ));
                mail.To.Add(new MailAddress(string.Format("{0}@qzone.qq.com", Portal.gc.QQ)));
                string title = this.txtTitle.Text;
                if (!string.IsNullOrEmpty(title))
                {
                    title = string.Format("[{0}]{1}", this.txtCategory.Text, this.txtTitle.Text);
                }
                mail.Subject = title;
                mail.Body = this.txtContent.Text;
                SmtpClient client = new SmtpClient("smtp.qq.com", 25);
                client.Credentials = new NetworkCredential(Portal.gc.QQ, Portal.gc.QQPass);
                client.Send(mail);

                MessageExUtil.ShowTips("QQ留言发表成功！");
                this.txtTitle.Clear();
                this.txtContent.Clear();
            }
            catch (Exception ex)
            {
                LogTextHelper.WriteLine(ex.ToString());
                MessageExUtil.ShowError(ex.Message);
            }

批量检查开通SMTP功能的代码如下所示：

        private void StartAtClick(object obj)
        {
            if (this.dg.Rows.Count == 0 || this.dg.SelectedRows.Count == 0)
            {
                SetTips("请先输入资料，并选定一个开始");
                return;
            }

            string selectQQ = "";
            foreach (DataGridViewRow row in this.dg.SelectedRows)
            {
                selectQQ = row.Cells["账号"].Value.ToString();
                break;
            }

            QQDict.Clear();
            QQList.Clear();
            foreach (DataGridViewRow row in this.dg.Rows)
            {
                string qq = row.Cells["账号"].Value.ToString();
                string pass = row.Cells["密码"].Value.ToString();
                if (!string.IsNullOrEmpty(qq) && !QQDict.ContainsKey(qq))
                {
                    QQDict.Add(qq, pass);
                    QQList.Add(qq);
                }
            }

            int current = QQList.IndexOf(selectQQ);
            if (QQDict.Count > 0 && current >= 0)
            {
                isStart = true;
                currentIndex = current;
                StartQQAt();
            }
        }

        private void StartQQAt()
        {
            if (!isStart || QQDict.Count == 0)
                return;

            if (currentIndex >= QQDict.Count)
            {
                isStart = false;
                SetTips("已经是最后一个QQ");
                return;
            }

            string qq = QQList[currentIndex];
            string pass = QQDict[qq];
            if (!string.IsNullOrEmpty(qq))
            {
                CallCtrlWithThreadSafety.SetText(this.lblOperateTips, string.Format("正在处理QQ[{0}]...", qq), this);
                CallCtrlWithThreadSafety.SetText(this.txtQQNumber, qq, this);
                Application.DoEvents();
                Thread.Sleep(100);

                CheckSmtpOpen(qq, pass);
            }
        }

        private void CheckSmtpOpen(string user, string pass)
        {
            bool success = CheckLogin(user, pass);
            if (success)
            {
                SetTips(string.Format("QQ用户[{0}] 测试成功", user));

                if (!SuccessList.Contains(user))
                {
                    SuccessList.Add(user);
                    if (failedList.Contains(user))
                    {
                        failedList.Remove(user);//移除成功的数据
                    }
                    UpdateList();
                }
            }
            else
            {
                if (!failedList.Contains(user))
                {
                    failedList.Add(user);
                    UpdateList();
                }
                SetTips(string.Format("QQ用户[{0}] 测试失败，可能密码不正确或未开通SMTP", user));
            }

            Interlocked.Increment(ref currentIndex);
            StartQQAt();
        }

        private bool CheckLogin(string user, string pass)
        {
            bool result = false;
            using (SMTP_Client client = new SMTP_Client())
            {
                try
                {
                    //匹配使之可以用于其它邮箱
                    string smtp = "smtp.qq.com";
                    int atIndex = user.IndexOf("@");
                    if (atIndex > 0)
                    {
                        smtp = "smtp." + user.Substring(atIndex + 1);
                    }
                    if(user.Contains("@163.com"))
                    {
                        user = user.Replace("@163.com", "");
                    }

                    client.Connect(smtp, WellKnownPorts.SMTP_SSL, true);
                    client.Authenticate(user, pass);
                    string helloText = client.GreetingText;
                    if (helloText.Contains("220"))
                    {
                        result = true;
                    }
                }
                catch (Exception ex)
                {
                    ;
                }
            }
            return result;
        }

        private void SetTips(string tips)
        {
            CallCtrlWithThreadSafetyEx.SetText(this.lblOperateTips, tips);
            CallCtrlWithThreadSafetyEx.SetText(this.tsslTipsLable, tips);
            Application.DoEvents();
            Thread.Sleep(20);
        }

        private void UpdateList()
        {
            try
            {
                this.lstFailed.Invoke(new MethodInvoker(delegate()
                {
                    this.lstFailed.Items.Clear();
                    foreach (string item in failedList)
                    {
                        this.lstFailed.Items.Add(item);
                    }
                    this.lstFailed.Refresh();
                }));
                this.lstSuccess.Invoke(new MethodInvoker(delegate()
                {
                    this.lstSuccess.Items.Clear();
                    foreach (string item in SuccessList)
                    {
                        this.lstSuccess.Items.Add(item);
                    }
                    this.lstSuccess.Refresh();
                }));
            }
            catch (Exception ex)
            {
                LogTextHelper.WriteLine(ex.ToString());
            }
        }

 其中利用了Lumisoft.NET的SMTP_Client对象来检测是否服务器应答的内容，如果含有220就表示支持SMTP了，呵呵，是不是很简单呢，其实上面的代码最为重要的就是下面这部分而已。

using (SMTP_Client client = new SMTP_Client())
            {
                try
                {
                    //匹配使之可以用于其它邮箱
                    string smtp = "smtp.qq.com";
                    int atIndex = user.IndexOf("@");
                    if (atIndex > 0)
                    {
                        smtp = "smtp." + user.Substring(atIndex + 1);
                    }
                    if(user.Contains("@163.com"))
                    {
                        user = user.Replace("@163.com", "");
                    }

                    client.Connect(smtp, WellKnownPorts.SMTP_SSL, true);
                    client.Authenticate(user, pass);
                    string helloText = client.GreetingText;
                    if (helloText.Contains("220"))
                    {
                        result = true;
                    }
                }
                catch (Exception ex)
                {
                    ;
                }
            }

其他部分就是为了实现一个循环机批量的过程而已。本随便介绍的功能，都已经集成的我的软件QQ搜通天系列软件中了，需要了解可以下载软件测试下，有宝贵意见可以相互沟通交流。