C#通用邮件发送类分享
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2022-05-26 15:17:56
此类的功能包括发送邮件,邮箱格式是否正确,和在不发送邮件的情况下判断邮箱用户名和密码是否正确,鉴于pop检查邮箱用户名和密码出现错误情况返回结果的延迟,用异步线程解决此问题...
此类的功能包括发送邮件,邮箱格式是否正确,和在不发送邮件的情况下判断邮箱用户名和密码是否正确,鉴于pop检查邮箱用户名和密码出现错误情况返回结果的延迟,用异步线程解决此问题,见代码:
using system; using system.collections.generic; using system.linq; using system.text; using system.net.mail; using system.web; using system.net; using system.text.regularexpressions; using system.net.sockets; using system.io; using system.collections; using system.threading; namespace com.web { /// <summary> /// 邮箱类 /// </summary> public class checkemailinfo { public string server { get; set; }//服务器 public string user { get; set; }//用户名 public string pwd { get; set; }//密码 } /// <summary> /// sendemail通用类,通过smtp服务器发送邮件 /// </summary> public class sendemail { public dictionary<string, string> smtpserver; public dictionary<string, string> popserver; public sendemail() { inismtpserver(); inipopserver(); } /// <summary> /// 初始化常用smtpserver,用于绑定下拉选择菜单 /// </summary> private void inismtpserver() { smtpserver = new dictionary<string, string>(); smtpserver.add("网易163邮箱", "smtp.163.com"); smtpserver.add("网易vip.163邮箱", "smtp.vip.163.com"); smtpserver.add("网易126邮箱", "smtp.126.com"); smtpserver.add("网易188邮箱", "smtp.188.com"); smtpserver.add("新浪邮箱", "smtp.sina.com"); smtpserver.add("雅虎邮箱", "smtp.mail.yahoo.com"); smtpserver.add("搜狐邮箱", "smtp.sohu.com"); smtpserver.add("tom邮箱", "smtp.tom.com"); smtpserver.add("gmail邮箱", "smtp.gmail.com"); smtpserver.add("qq邮箱", "smtp.qq.com"); smtpserver.add("qq企业邮箱", "smtp.biz.mail.qq.com"); smtpserver.add("139邮箱", "smtp.139.com"); smtpserver.add("263邮箱", "smtp.263.com"); } /// <summary> /// 初始化常用popserver,用于绑定下拉选择菜单 /// </summary> private void inipopserver() { popserver = new dictionary<string, string>(); popserver.add("网易163邮箱", "pop3.163.com"); popserver.add("网易vip.163邮箱", "pop3.vip.163.com"); popserver.add("网易126邮箱", "pop3.126.com"); popserver.add("网易188邮箱", "pop3.188.com"); popserver.add("新浪邮箱", "pop3.sina.com"); popserver.add("雅虎邮箱", "pop3.mail.yahoo.com"); popserver.add("搜狐邮箱", "pop3.sohu.com"); popserver.add("tom邮箱", "pop.tom.com"); popserver.add("gmail邮箱", "pop.gmail.com"); popserver.add("qq邮箱", "pop.qq.com"); popserver.add("qq企业邮箱", "pop.biz.mail.qq.com"); popserver.add("139邮箱", "pop.139.com"); popserver.add("263邮箱", "pop.263.com"); } /// <summary> /// 发送邮件功能 /// </summary> /// <param name="fromemail">登录邮箱</param> /// <param name="password">登录密码</param> /// <param name="user">邮件昵称</param> /// <param name="title">邮件标题</param> /// <param name="toemail">邮件地址</param> /// <param name="email">邮件内容</param> /// <param name="smtpserver">smtp服务器</param> public bool sendmessage(string fromemail,string password, string user, string title, string toemail, string email,string smtpserver) { try { smtpclient smtp = new smtpclient(); //实例化一个smtpclient smtp.deliverymethod = smtpdeliverymethod.network; //将smtp的出站方式设为 network smtp.enablessl = false;//smtp服务器是否启用ssl加密 smtp.host = smtpserver;//指定 smtp 服务器 smtp.credentials = new networkcredential(fromemail, password); mailmessage mm = new mailmessage(); //实例化一个邮件类 mm.priority = mailpriority.high; //邮件的优先级,分为 low, normal, high,通常用 normal即可 mm.from = new mailaddress(fromemail, user, encoding.getencoding(936)); mm.cc.add(new mailaddress(toemail, "", encoding.getencoding(936))); mm.subject = title; //邮件标题 mm.subjectencoding = encoding.getencoding(936); mm.isbodyhtml = true; //邮件正文是否是html格式mm.bodyencoding = encoding.getencoding(936); mm.body = email; smtp.send(mm); return true; } catch { return false; } } /// <summary> /// 检查邮箱是否正确的委托 /// </summary> delegate bool mydelegate(object checkemailinfo); /// <summary> /// 利用异步方式检查邮箱账号和密码是否正确 /// </summary> public bool checkuser(string server, string user, string pwd) { mydelegate mydelegate = new mydelegate(checkuser); checkemailinfo checkemailinfo = new checkemailinfo(); checkemailinfo.server = server; checkemailinfo.user = user; checkemailinfo.pwd = pwd; iasyncresult result = mydelegate.begininvoke(checkemailinfo, null, null); thread.sleep(1000);//主线程1秒后检查异步线程是否运行完毕 if (result.iscompleted) { return mydelegate.endinvoke(result); }//如果错误的邮箱和密码,函数将会运行很慢 else { return false; } } /// <summary> /// 判断用户邮箱账号和密码是否正确 /// </summary> /// <param name="server">popserver地址</param> /// <param name="user">用户名</param> /// <param name="pwd">密码</param> private bool checkuser(object checkemailinfo) { checkemailinfo checkinfo = (checkemailinfo)checkemailinfo; tcpclient sender = new tcpclient(checkinfo.server, 110);//pop协议使用tcp的110端口 byte[] outbytes; networkstream ns; streamreader sr; string input; string readuser = string.empty; string readpwd = string.empty; try { ns = sender.getstream(); sr = new streamreader(ns); sr.readline(); //检查用户名和密码 input = "user " + checkinfo.user+ "\r\n"; outbytes = encoding.ascii.getbytes(input.tochararray()); ns.write(outbytes, 0, outbytes.length); readuser = sr.readline(); input = "pass " + checkinfo.pwd + "\r\n"; outbytes =encoding.ascii.getbytes(input.tochararray()); ns.write(outbytes, 0, outbytes.length); readpwd = sr.readline(); if (readuser.substring(0, 3) == "+ok" && readpwd.substring(0, 3) == "+ok") { return true; } else { return false; } } catch { return false; } } /// <summary> /// 判断邮箱格式是否正确 /// </summary> /// <param name="email">邮箱地址</param> public bool isemail(string email) { string paterner = @"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"; if (!regex.ismatch(email, paterner)) { return false;} else {return true;} } } }
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