这里我们以QQ邮箱为例。
一、导入依赖：
<dependencies><!-- https://mvnrepository.com/artifact/javax.activation/activation --><dependency><groupId>javax.activation</groupId><artifactId>activation</artifactId><version>1.1.1</version></dependency><!-- https://mvnrepository.com/artifact/javax.mail/mail --><dependency><groupId>javax.mail</groupId><artifactId>mail</artifactId><version>1.4.7</version></dependency></dependencies>
二、设置自己的QQ邮箱
开启以上两项服务。
三、具体实现
import com.sun.mail.util.MailSSLSocketFactory;import javax.mail.*; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; import java.util.Properties;public class SendEmail {/* addressee:收件人邮箱*title:邮件标题标题*content:邮件内容*/public static void send(String addressee, String title, String content) throws Exception {Properties prop = new Properties();prop.setProperty("mail.host", "smtp.qq.com");//邮件服务器：QQprop.setProperty("mail.transport.protocol", "smtp");//邮件发送协议：smtpprop.setProperty("mail.smtp.auth", "true");//需要验证用户名和密码//QQ邮箱，还需要设置SSL加密MailSSLSocketFactory factory = new MailSSLSocketFactory();factory.setTrustAllHosts(true);prop.put("maim.smtp.ssl.enable", "true");prop.put("maim.smtp.ssl.socketFactory", factory);//javaMail发送email的五个步骤//1.定义一个整个应用环境需要的session对象Session session = Session.getDefaultInstance(prop, new Authenticator() {@Overrideprotected PasswordAuthentication getPasswordAuthentication() {return new PasswordAuthentication("自己的邮箱", "授权码");}});//开启session的debug模式session.setDebug(true);//2.通过session得到transport对象Transport transport = session.getTransport();//3.使用邮箱用户名和授权码连接上服务器transport.connect("smtp.qq.com", "自己的邮箱", 授权码");//4.创建邮件//创建邮件对象MimeMessage message = new MimeMessage(session);//发邮件人message.setFrom(new InternetAddress("自己的邮箱"));//收件人 可以群发setRecipientsmessage.setRecipient(Message.RecipientType.TO, new InternetAddress(addressee));//邮件标题 message.setSubject(title);//邮件内容，前内容，后格式message.setContent(content, "text/html;charset=UTF-8");//5.发送邮件 transport.sendMessage(message, message.getAllRecipients());//6.关闭连接 transport.close();} }
（本文仅作个人学习记录用，如有纰漏敬请指正）
