一些常用函数的整理

一、C#客户端通过POST或GET向指定的网址发送数据
 

/// <summary>
/// 发送请求
/// </summary>
/// <param name="url">网址</param>
/// <param name="parameter">要发送的值。如：abc=4&bcd=5</param>
/// <param name="method">发送的方式，“POST”还是“GET”</param>
/// <returns>返回的结果</returns>
public static string RequestUrl(string url, string parameter, string method)
{
    try
    {
        HttpWebRequest hwrq = null;
        if (method == "POST")
        {
            hwrq = (HttpWebRequest)HttpWebRequest.Create(url);
            hwrq.KeepAlive = false;
            hwrq.ReadWriteTimeout = 10000;
            //hwrq.CookieContainer = cc;
            hwrq.Method = method;
            byte[] postData = System.Text.Encoding.UTF8.GetBytes(parameter);
            hwrq.ContentType = "application/x-www-form-urlencoded";
            hwrq.ContentLength = postData.Length;
            Stream writeStream = hwrq.GetRequestStream();
            writeStream.Write(postData, 0, postData.Length);
            writeStream.Close();
        }
        else if (method == "GET")
        {
            hwrq = (HttpWebRequest)HttpWebRequest.Create(url + "?" + System.Web.HttpUtility.UrlEncode(parameter));
            hwrq.KeepAlive = false;
            //hwrq.CookieContainer = cc;
            hwrq.Method = method;
        }

        if (hwrq != null)
        {
            HttpWebResponse hwrp = (HttpWebResponse)hwrq.GetResponse();
            //return hwrp.ResponseUri.AbsoluteUri;
            StreamReader sr = new StreamReader(hwrp.GetResponseStream(), Encoding.Default);
            return sr.ReadToEnd();
        }
    }
    catch (Exception ex)
    {
        throw ex;
    }
    return null;
}

二、邮件发送函数
 

/// <summary>
/// 发送邮件
/// </summary>
/// <param name="strSmtpServer">Smtp地址</param>
/// <param name="strFrom">发送方的邮件地址</param>
/// <param name="strFromPass">发送方的邮件密码</param>
/// <param name="strto">接受方的邮件地址</param>
/// <param name="strSubject">邮件主题</param>
/// <param name="strBody">邮件内容，支持html</param>
/// <param name="Attachments">附件列表</param>
/// <returns>成功与否</returns>
public static bool SendSMTPEMail(string strSmtpServer, string strFrom, string strFromPass, string strto, string strSubject, string strBody, string[] Attachments)
{
    System.Net.Mail.SmtpClient client = null;
    System.Net.Mail.MailMessage message = null;
    try
    {
        client = new SmtpClient();
        client.Host = System.Net.Dns.GetHostAddresses(strSmtpServer)[0].ToString();
        client.UseDefaultCredentials = false;
        client.Credentials = new System.Net.NetworkCredential(strFrom, strFromPass);
        //星号改成自己邮箱的密码
        client.DeliveryMethod = SmtpDeliveryMethod.Network;

        message = new MailMessage(strFrom, strto);
        message.Subject = strSubject;
        message.Body = strBody;
        message.BodyEncoding = System.Text.Encoding.UTF8;
        message.IsBodyHtml = true;

        //添加附件
        foreach (string forStr in Attachments)
        {
            Attachment data = new Attachment(forStr, System.Net.Mime.MediaTypeNames.Application.Octet);
            message.Attachments.Add(data);
        }

        client.Send(message);
    }
    catch (Exception ex)
    {
        using (System.IO.StreamWriter sw = new System.IO.StreamWriter(Directory.GetCurrentDirectory().TrimEnd('\') + "\Log.txt", true, Encoding.UTF8))
        {
            sw.Write("发送邮件出错!
" + ex.Message + "
" + ex.StackTrace + "
===========================
");
        }
        return false;
    }
    finally
    {
        if (message != null)
        {
            foreach (Attachment forData in message.Attachments)
                forData.Dispose();
            message.Attachments.Clear();
            message.Dispose();
        }
    }
    return true;
}