Java实现邮箱发送（阿里云邮箱推送）

绑定阿里云域名，创建域名账户，并配置解析域名账户，获得发送邮箱的权限，上限两百封，超出要￥…

• 阿里云邮件推送控制台
• https://www.aliyun.com/product/directmail
• 申请邮箱并解析域名
• https://yq.aliyun.com/articles/707997

1. 邮箱信息实体类

package cn.bitqian.mail.test;

/**
 * 邮件内容实体类
 * @author echo lovely
 * @date 2020/9/18 15:47
 */
public class MailInfo {
    
    

    // 发件人账户
    private String sendEmailAccount;

    // 发件人密码
    private String sendEmailPassword;

    // 收件人账户
    private String receiveMailAccount;

    // 发送人姓名
    private String sendPersonName;

    // 收件人姓名
    private String receivePersonName;

   // 邮件标题
    private String mailTitle;

    // 邮件正文
    private String mailContent;

    public MailInfo(String sendEmailAccount, String sendEmailPassword, String receiveMailAccount,
                    String sendPersonName, String receivePersonName,
                    String mailTitle, String mailContent) {
    
    
        this.sendEmailAccount = sendEmailAccount;
        this.sendEmailPassword = sendEmailPassword;
        this.receiveMailAccount = receiveMailAccount;
        this.sendPersonName = sendPersonName;
        this.receivePersonName = receivePersonName;
        this.mailTitle = mailTitle;
        this.mailContent = mailContent;
    }

    public String getSendEmailAccount() {
    
    
        return sendEmailAccount;
    }

    public void setSendEmailAccount(String sendEmailAccount) {
    
    
        this.sendEmailAccount = sendEmailAccount;
    }

    public String getSendEmailPassword() {
    
    
        return sendEmailPassword;
    }

    public void setSendEmailPassword(String sendEmailPassword) {
    
    
        this.sendEmailPassword = sendEmailPassword;
    }

    public String getReceiveMailAccount() {
    
    
        return receiveMailAccount;
    }

    public void setReceiveMailAccount(String receiveMailAccount) {
    
    
        this.receiveMailAccount = receiveMailAccount;
    }

    public String getMailTitle() {
    
    
        return mailTitle;
    }

    public void setMailTitle(String mailTitle) {
    
    
        this.mailTitle = mailTitle;
    }

    public String getMailContent() {
    
    
        return mailContent;
    }

    public void setMailContent(String mailContent) {
    
    
        this.mailContent = mailContent;
    }

    public String getSendPersonName() {
    
    
        return sendPersonName;
    }

    public void setSendPersonName(String sendPersonName) {
    
    
        this.sendPersonName = sendPersonName;
    }

    public String getReceivePersonName() {
    
    
        return receivePersonName;
    }

    public void setReceivePersonName(String receivePersonName) {
    
    
        this.receivePersonName = receivePersonName;
    }
}

2. jar包依赖

 <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.11</version>
   <scope>test</scope>
 </dependency>

 <!-- mail dependency -->
 <dependency>
   <groupId>com.sun.mail</groupId>
   <artifactId>javax.mail</artifactId>
   <version>1.6.2</version>
 </dependency>

3. 发送邮箱实现

注意：
	1. 更改下面的属性，与实体类对应

代码实现

package cn.bitqian.mail.test;

import org.junit.Test;

import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Date;
import java.util.Properties;


/**
 * 邮件发送工具类
 * @author echo lovely
 * @date 2020/9/18 15:54
 */
public class MailSendUtils {
    
    

    // 邮箱smtp协议 这里是使用阿里云的
    public static final String myEmailSMTPHost = "smtpdm.aliyun.com";

    @Test
    public void test() {
    
    
        MailInfo mailInfo = new MailInfo("控制台所绑定的邮箱账户名",
                "绑定账户邮箱密码",
                "收件人邮箱名", "发件人姓名",
                "收件人姓名", "邮箱标题", "邮箱内容");
        try {
    
    
            sendEmail(mailInfo);
        } catch (Exception e) {
    
    
            e.printStackTrace();
        }
    }

    public void sendEmail(MailInfo mailInfo) throws Exception {
    
    

        // 1. 创建参数配置, 用于连接邮件服务器的参数配置
        Properties props = new Properties();                    // 参数配置
        props.setProperty("mail.transport.protocol", "smtp");   // 使用的协议（JavaMail规范要求）
        props.setProperty("mail.smtp.host", myEmailSMTPHost);   // 发件人的邮箱的 SMTP 服务器地址
        props.setProperty("mail.smtp.auth", "true");            // 需要请求认证

        // 2. 根据配置创建会话对象, 用于和邮件服务器交互
        Session session = Session.getInstance(props);
        session.setDebug(true);                                 // 设置为debug模式, 可以查看详细的发送 log

        // 3. 创建一封邮件
        MimeMessage message = new MailSendUtils().createMimeMessage(session, mailInfo);

        // 4. 根据 Session 获取邮件传输对象
        Transport transport = session.getTransport();

        // 5. 使用 邮箱账号 和 密码 连接邮件服务器, 这里认证的邮箱必须与 message 中的发件人邮箱一致, 否则报错
        transport.connect(mailInfo.getSendEmailAccount(), mailInfo.getSendEmailPassword());

        // 6. 发送邮件, 发到所有的收件地址, message.getAllRecipients() 获取到的是在创建邮件对象时添加的所有收件人, 抄送人, 密送人
        transport.sendMessage(message, message.getAllRecipients());

        // 7. 关闭连接
        transport.close();
    }

	
    public MimeMessage createMimeMessage(Session session, MailInfo mailInfo) throws Exception {
    
    
        // 1. 创建一封邮件
        MimeMessage message = new MimeMessage(session);

        // 2. From: 发件人（昵称有广告嫌疑，避免被邮件服务器误认为是滥发广告以至返回失败，请修改昵称）
        message.setFrom(new InternetAddress(mailInfo.getSendEmailAccount(), mailInfo.getSendPersonName(), "UTF-8"));

        // 3. To: 收件人（可以增加多个收件人、抄送、密送）
        message.setRecipient(MimeMessage.RecipientType.TO,
                new InternetAddress(mailInfo.getReceiveMailAccount(), mailInfo.getReceivePersonName(), "UTF-8"));

        // 4. Subject: 邮件主题（标题有广告嫌疑，避免被邮件服务器误认为是滥发广告以至返回失败，请修改标题）
        message.setSubject(mailInfo.getMailTitle(), "UTF-8");

        // 5. Content: 邮件正文（可以使用html标签）（内容有广告嫌疑，避免被邮件服务器误认为是滥发广告以至返回失败，请修改发送内容）
        message.setContent(mailInfo.getMailContent(), "text/html;charset=UTF-8");

        // 6. 设置发件时间
        message.setSentDate(new Date());

        // 7. 保存设置
        message.saveChanges();

        return message;
    }

}