C#-工具-EmailSender-发送邮件

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Text;
using System.Web;

namespace WebHelper
{
    public class EmailSender
    {
        /// <param name="url"></param>
        /// <param name="paramData"></param>
        /// <param name="headerDic"></param>
        /// <returns></returns>
        public static string HttpPost(string url, string paramData, Dictionary<string, string> headerDic = null)
        {
            string result = string.Empty;
            try
            {
                HttpWebRequest wbRequest = (HttpWebRequest)WebRequest.Create(url);
                wbRequest.Method = "POST";
                wbRequest.ContentType = "application/x-www-form-urlencoded";
                wbRequest.ContentLength = Encoding.UTF8.GetByteCount(paramData);
                if (headerDic != null && headerDic.Count > 0)
                {
                    foreach (var item in headerDic)
                    {
                        wbRequest.Headers.Add(item.Key, item.Value);
                    }
                }
                using (Stream requestStream = wbRequest.GetRequestStream())
                {
                    using (StreamWriter swrite = new StreamWriter(requestStream))
                    {
                        swrite.Write(paramData);
                    }
                }
                HttpWebResponse wbResponse = (HttpWebResponse)wbRequest.GetResponse();
                using (Stream responseStream = wbResponse.GetResponseStream())
                {
                    using (StreamReader sread = new StreamReader(responseStream))
                    {
                        result = sread.ReadToEnd();
                    }
                }
            }
            catch (Exception ex)
            { }

            return result;
        }

        private static String AssemblePostData(String sendEmailTitle, String errDetail)
        {

            Dictionary<string, string> Info = new Dictionary<string, string>();

            Info.Add("time", new DateTime().ToString("yyyy-MM-dd HH:mm-ss"));
            Info.Add("ua", "Android");
            Info.Add("message", errDetail);
            Info.Add("website", sendEmailTitle);
            return BuildPostQuery(Info);
        }
        /// <summary>
        /// 组装普通文本请求参数。
        /// </summary>
        /// <param name="parameters">Key-Value形式请求参数字典</param>
        /// <returns>URL编码后的请求数据</returns>
        public static string BuildPostQuery(IDictionary<string, string> parameters)
        {
            StringBuilder postData = new StringBuilder();
            bool hasParam = false;

            IEnumerator<KeyValuePair<string, string>> dem = parameters.GetEnumerator();
            while (dem.MoveNext())
            {
                string name = dem.Current.Key;
                string value = dem.Current.Value;
                // 忽略参数名或参数值为空的参数
                if (!string.IsNullOrEmpty(name) && !string.IsNullOrEmpty(value))
                {
                    if (hasParam)
                    {
                        postData.Append("&");
                    }

                    postData.Append(name);
                    postData.Append("=");
                    postData.Append(HttpUtility.UrlEncode(value, Encoding.UTF8));
                    hasParam = true;
                }
            }

            return postData.ToString();
        }
        /// <summary>
        /// 发送邮件（自定义发送配置）
        /// </summary>
        /// <param name="reEmailPath">收件人邮箱地址</param>
        /// <param name="reEmailName">收件人名称</param>
        /// <param name="sendEmailTitle">发件标题</param>
        /// <param name="sendEmailContent">发件内容</param>
        /// <param name="sendEmailUser">发件人账户</param>
        /// <param name="sendEmailPwd">发件人密码</param>
        /// <param name="sendEmailName">发件人名称</param>
        /// <param name="sendEmailPort">端口</param>
        /// <param name="sendEmailHost">发送SMTP地址</param>
        /// <returns></returns>
        public static bool SendEmailMsg(string reEmailPath, string reEmailName, string sendEmailTitle, string sendEmailContent, string sendEmailUser, string sendEmailPwd, string sendEmailName, string sendEmailPort, string sendEmailHost)
        {
            SmtpClient client = new SmtpClient();

            //设置为发送认证消息
            client.UseDefaultCredentials = true;
            client.EnableSsl = true;
            //string Email = EmailUser.Split('@')[0];
            //获取或设置用于验证发件人身份的凭据。
            client.Credentials = new System.Net.NetworkCredential(sendEmailUser, sendEmailPwd);

            //经过ssl(安全套接层)加密,163邮箱SSL协议端口号为465/994,关闭SSL时端口为25,
            //qq邮箱SSL协议端口号为465或587,关闭SSL时端口同样为25，不过用SSL加密后发送邮件都失败，具体原因不知
            //client.EnableSsl = true;        
            client.Port = Convert.ToInt32(sendEmailPort);                //端口号
            client.Host = sendEmailHost;     //获取或设置用于 SMTP 事务的主机的名称或 IP 地址
            try
            {
                client.Send(InitMailMessage(reEmailPath, reEmailName, sendEmailTitle, sendEmailContent, sendEmailUser, sendEmailName));
                return true;
            }
            catch (System.Net.Mail.SmtpException ex)
            {
                return false;
            }
        }
        /// <summary>
        /// 初始化信件相关信息
        /// </summary>
        /// <param name="reEmailPath">收件人</param>
        /// <param name="reEmailName">收件人名称</param>
        /// <param name="sendEmailTitle">发送标题</param>
        /// <param name="sendEmailContent">发送内容</param>
        /// <param name="sendEmailUser">发件人</param>
        /// <param name="sendEmailName">发件人名称</param>
        /// <returns></returns>
        public static MailMessage InitMailMessage(string reEmailPath, string reEmailName, string sendEmailTitle, string sendEmailContent, string sendEmailUser, string sendEmailName)
        {
            MailMessage mail = new MailMessage();

            mail.From = new MailAddress(sendEmailUser, sendEmailName);  //发件人
            if (reEmailPath != "")
            {
                MailAddress mailAdd = new MailAddress(reEmailPath, reEmailName);  //收件人
                mail.To.Add(mailAdd);                  //收件人
            }
            else
            {
                mail.To.Add(reEmailPath);                  //收件人
            }
            mail.Subject = sendEmailTitle;         //主题
            mail.Body = sendEmailContent;            //内容

            //邮件主题和正文的编码格式
            mail.SubjectEncoding = System.Text.Encoding.UTF8;
            mail.BodyEncoding = System.Text.Encoding.UTF8;
            mail.IsBodyHtml = true;                //邮件正文允许html编码
            mail.Priority = MailPriority.Normal;     //优先级
            //密送——就是将信密秘抄送给收件人以外的人，所有收件人看不到密件抄送的地址
            //mail.Bcc.Add("qq@qq.com");
            //抄送——就是将信抄送给收件人以外的人,所有的收件人可以在抄送地址处看到此信还抄送给谁
            //mail.CC.Add("qq@qq.com");
            //mail.Attachments.Add(new Attachment("D:\\1.doc"));     //添加附件

            return mail;

        }

    }
}