一个发邮件的例子,涉及MSMQ,RSA,JMAIL

2024-07-21 02:24:36

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1.先生成公钥密钥

   rsacryptoserviceprovider crypt=new rsacryptoserviceprovider();
   string publickey=crypt.toxmlstring(false);//（公钥）
   string privatekey=crypt.toxmlstring(true);
   crypt.clear();
   streamwriter one=new streamwriter(@"c:/a.txt",true,utf8encoding.utf8);
   one.write(publickey);
   streamwriter two=new streamwriter(@"c:/b.txt",true,utf8encoding.utf8);
   two.write(privatekey);
   one.flush();
   two.flush();
   one.close();
   two.close();
   console.writeline("成功保存公匙和密匙！");

2.对信息加密,然后用通过队列发送信息

   string from=textboxfrom.text+dropdownlist2.selectedvalue;
   string sub=textboxsub.text;
   string bodys=textboxbody.text;
   string pwd=textboxpwd.text;

   streamreader sr = new streamreader(@"c:/a.txt",utf8encoding.utf8);
   string readpublickey = sr.readtoend();
   sr.close();

   rsacryptoserviceprovider crypt=new rsacryptoserviceprovider();
   utf8encoding enc=new utf8encoding();
   byte[] bytes=enc.getbytes(pwd);
   crypt.fromxmlstring( readpublickey );//读取公钥
   bytes = crypt.encrypt( bytes,false ); //进行加密
   string encryttext=convert.tobase64string(bytes); //转码

   mailerinfo mf=new mailerinfo();
   //mf.body=bodys;
   mf.body=bodys;
   mf.from=from;
   mf.fromname=textboxfrom.text;
   mf.password=encryttext;
   mf.sub=sub;

//createqueue(".//myqueue");

sendmessage(mf);

}

  public static void createqueue(string queuepath)
  {
   try
   {
    if(!messagequeue.exists(queuepath))
    {
     messagequeue.create(@"./private$/myqueue");
    }
    else
    {
     console.writeline(queuepath + " already exists.");
    }
   }
   catch (messagequeueexception e)
   {
    console.writeline(e.message);
   }
  }

  public void sendmessage(mailerinfo mf)
  {
   try
   {
    messagequeue myqueue = new messagequeue(".//private$//myqueue");

    system.messaging.message mymessage = new system.messaging.message(mf);
    myqueue.send(mymessage);
   }
   catch(argumentexception e)
   {
    console.writeline(e.message);
   }

return;
}

3.在服务器端独立运行程序,在队列里面读取信息

public void receivemessage()
{

   messagequeue myqueue = new messagequeue(".//private$//myqueue");
   myqueue.formatter = new xmlmessageformatter(new type[]{typeof(messagerec.mailerinfo)});
   try
   {
    system.messaging.message mymessage =    myqueue.receive();
    mailerinfo mf = (mailerinfo)mymessage.body;
    //解码

    streamreader sr = new streamreader(@"c:/b.txt",utf8encoding.utf8);
    string readprivatekey = sr.readtoend();
    sr.close();

    rsacryptoserviceprovider crypt=new rsacryptoserviceprovider();
    utf8encoding enc=new utf8encoding();
    byte[] bytes = convert.frombase64string(mf.password);
    crypt.fromxmlstring ( readprivatekey ) ;
    byte[] decryptbyte = crypt.decrypt( bytes,false );
    password=enc.getstring( decryptbyte );
    from=mf.from;
    fromname=mf.fromname;
    sub=mf.sub;
    body=mf.body;
    to="[email protected]";

   }
   catch (messagequeueexception)
   {
   }
   catch (invalidoperationexception e)
   {
    console.writeline(e.message);
   }

   //发送邮件

   jmail.message jmail=new jmail.message();
   jmail.silent=false;
   jmail.logging=true;
   jmail.charset="gb2312";
   jmail.contenttype="text/html";
   jmail.addrecipient(to,"","");
   jmail.from=from;
   jmail.mailserverusername=fromname;
   jmail.mailserverpassword=password;
   jmail.subject=sub;
   jmail.body=body;
   string smtp="smtp.163.com";
   if(from.endswith("tom.com"))
   {
    smtp="smtp.tom.com";
   }
   else if(from.endswith("21cn.com"))
   {
    smtp="smtp.21cn.com";
   }
   else if(from.endswith("sina.com"))
   {
    smtp="smtp.sina.com";
   }
   else if(from.endswith("263.com"))
   {
    smtp="smtp.263.com";
   }
   //开始发送邮件
   int i=0;
   try
   {
    jmail.send(smtp,false);
   }
   catch(exception ee)
   {
    i=1;
   }
   jmail.close() ;