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今天小編給大家分享一下基于Java怎么實(shí)現(xiàn)簡(jiǎn)單的郵件群發(fā)功能的相關(guān)知識(shí)點(diǎn),內(nèi)容詳細(xì),邏輯清晰,相信大部分人都還太了解這方面的知識(shí),所以分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后有所收獲,下面我們一起來了解一下吧。
<dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.4</version> </dependency> <!--lombok--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency>
import lombok.Data; import javax.mail.Message.RecipientType; import javax.mail.MessagingException; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import java.util.Properties; /** * Created by tarzan liu on 2021/5/9. */ public abstract class EmailUtil { private static final Session session; private static final EmailAuthenticator authenticator; static { InputStream inputStream = null; try { inputStream = EmailUtil.class.getResourceAsStream("/email.properties"); Properties properties = new Properties(); properties.load(inputStream); authenticator = new EmailAuthenticator(); String username = properties.getProperty("email.username"); authenticator.setUsername(username); String password = properties.getProperty("email.password"); authenticator.setPassword(password); String smtpHostName = "smtp." + username.split("@")[1]; properties.put("mail.smtp.auth", "true"); properties.put("mail.smtp.host", smtpHostName); session = Session.getInstance(properties, authenticator); } catch (Exception e) { throw new RuntimeException("init error."); } finally { if (inputStream != null) { try { inputStream.close(); } catch (IOException e) { e.printStackTrace(); } } } } private EmailUtil() { } /** * 群發(fā)郵件方法 */ private static void massSend(List<String> recipients, SimpleEmail email) throws MessagingException { MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress(authenticator.getUsername())); InternetAddress[] addresses = new InternetAddress[recipients.size()]; for (int index = 0; index < recipients.size(); index ++) { addresses[index] = new InternetAddress(recipients.get(index)); } message.setRecipients(RecipientType.TO, addresses); message.setSubject(email.getSubject()); message.setContent(email.getContent(), "text/html;charset=utf-8"); Transport.send(message); } /** * 發(fā)送郵件 */ public static void send(String recipient, SimpleEmail email) throws MessagingException { List<String> recipients = new ArrayList<>(); recipients.add(recipient); massSend(recipients, email); } //可以單獨(dú)建一個(gè)類 @Data public static class SimpleEmail { private String subject; private String content; } public static void main(String[] args) throws Exception { SimpleEmail simpleEmail = new SimpleEmail(); simpleEmail.setSubject("今天你學(xué)習(xí)了么?"); simpleEmail.setContent("今天你寫博客了么"); send("1334512682@qq.com", simpleEmail); } }
email.properties 系統(tǒng)郵箱配置
email.username=###@163.com
email.password=###
你的郵箱賬號(hào)和密碼,也可以省去配置文件,直接把賬號(hào)密碼寫死在代碼。
右鍵run 運(yùn)行主方法。
將發(fā)送的郵箱綁定到微信上,還能實(shí)現(xiàn)微信提醒功能!
以上就是“基于Java怎么實(shí)現(xiàn)簡(jiǎn)單的郵件群發(fā)功能”這篇文章的所有內(nèi)容,感謝各位的閱讀!相信大家閱讀完這篇文章都有很大的收獲,小編每天都會(huì)為大家更新不同的知識(shí),如果還想學(xué)習(xí)更多的知識(shí),請(qǐng)關(guān)注億速云行業(yè)資訊頻道。
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