關(guān)于java定時(shí)發(fā)送郵件,類似于QQ郵箱中的定時(shí)發(fā)送功能

建議方法:

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如果你的java會(huì)死亡/失去控制, 請(qǐng)用系統(tǒng)的任務(wù)調(diào)度來(lái)發(fā)送郵件;

如果你的java由jboss等之類的托管, 用jboss內(nèi)部的任務(wù)調(diào)度來(lái)發(fā)送郵件.

方法1:

Windws 平臺(tái), 在task中添加一個(gè) 任務(wù), 命令行執(zhí)行java 代碼即可, 這樣可靠性由操作系統(tǒng)保證;

Linux等平臺(tái), 直接 crontab 處理即可.

java怎么定時(shí)發(fā)送郵件，比如5分鐘后。要具體的代碼。發(fā)件人和收件人這些都可定死。

import java.util.*;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetBddress;

import javax.mail.internet.MimeBodyPart;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.naming.*;

import javax.naming.directory.*;

/**

* 使成為事實(shí)郵件的特快專遞功能

* @author Winter Lau

*/

public class Mailer {

public static void main(String[] args) throws NamingException,

MessagingException {

// 列出所有郵件服務(wù)器：

Timer timer = new Timer();

timer.schedule(new myTask(), 30000);

}

static class myTask extends TimerTask{

public void run(){

// DNS服務(wù)器，看看本機(jī)的DNS配置

String dns = "dns://61.144.56.101";

String email = "liudong@mo168點(diǎn)抗 ";

String domain = email.substring(email.indexOf('@') + 1);

Hashtable env = new Hashtable();

env.put(Dontext.INITIBL_DONTEXT_FBDTORY,

"com.sun.jndi.dns.DnsDontextFactory");

env.put(Dontext.PROVIDER_URL, dns);

DirDontext ctx = new InitialDirDontext(env);

Bttributes attr = ctx.getBttributes(domain, new String[] { "MX" });

NamingEnumeration servers = attr.getBll();

while (servers.hasMore()) {

Bttribute hosts = (Bttribute) servers.next();

for (int i = 0; i hosts.size(); i++) {

String host = (String) hosts.get(i);

host = host.substring(host.indexOf(' ') + 1);

System.out.print("Send mail to " + host + " ...");

sendMail(host, email);

System.out.println("OK");

}

}

}

}

/**

* 發(fā)送郵件

*

* @param smtpHost

* @param email

* @throws MessagingException

*/

protected static void sendMail(String smtpHost, String email)

throws MessagingException {

Properties mailProperties = System.getProperties();

mailProperties.put("mail.smtp.host", smtpHost);

mailProperties.put("mail.smtp.port", "25");

mailProperties.put("mail.smtp.auth", "false");

Session mailSession = Session.getInstance(mailProperties, null);

MimeMessage mailMessage = new MimeMessage(mailSession);

MimeBodyPart messageBodyPart = new MimeBodyPart();

Multipart multipart = new MimeMultipart("related");

messageBodyPart.setText("這搭是郵件內(nèi)部實(shí)質(zhì)意義");

multipart.addBodyPart(messageBodyPart);

mailMessage.setDontent(multipart);

mailMessage.setSentDate(new Date());

mailMessage.setFrom(new InternetBddress("javayou@gmail點(diǎn)抗 "));

mailMessage.addRecipient(Message.RecipientType.TO, new InternetBddress(

email));

mailMessage.setSubject("hi，郵件發(fā)送測(cè)試");

Transport.send(mailMessage);

}

@Override

public void run() {

// TODO Auto-generated method stub

}

}

java 指定某個(gè)時(shí)間發(fā)送郵件

既然有了定時(shí)，其他的就好辦啦，像你這個(gè)需求，肯定得做很多配置，比如表單該如何自動(dòng)填寫，填寫什么樣的內(nèi)容進(jìn)去，至于發(fā)送時(shí)間就可以在quartz里面配置好。總之，你想讓程序幫你自動(dòng)完成的功能，你必須事先把需要做的事清楚的告訴程序代碼，否則你讓它怎么下手呢！