前言

繫結阿里雲域名，建立域名賬戶，並配置解析域名賬戶，獲得傳送郵箱的許可權，上限兩百封，超出要￥…

阿里雲郵件推送控制檯

https://www.aliyun.com/product/directmail

申請郵箱並解析域名

https://yq.aliyun.com/articles/707997

1. 郵箱資訊實體類

package cn.bitqian.mail.test;

/**
 * 郵件內容實體類
 * @author echo lovely
 * @date 2020/9/18 15:47
 */
public class MailInfo {

  // 發件人賬戶
  private String sendEmailAccount;

  // 發件人密碼
  private String sendEmailPassword;

  // 收件人賬戶
  private String receiveMailAccount;

  // 傳送人姓名
  private String sendPersonName;

  // 收件人姓名
  private String receivePersonName;

  // 郵件標題
  private String mailTitle;

  // 郵件正文
  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包依賴

 <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. 傳送郵箱實現

注意：

1. 更改下面的屬性，與實體類對應

程式碼實現

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;


/**
 * 郵件傳送工具類
 * @author echo lovely
 * @date 2020/9/18 15:54
 */
public class MailSendUtils {

  // 郵箱smtp協議 這裡是使用阿里雲的
  public static final String myEmailSMTPHost = "smtpdm.aliyun.com";

  @Test
  public void test() {
    MailInfo mailInfo = new MailInfo("控制檯所繫結的郵箱賬戶名","繫結賬戶郵箱密碼","收件人郵箱名","發件人姓名","收件人姓名","郵箱標題","郵箱內容");
    try {
      sendEmail(mailInfo);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  public void sendEmail(MailInfo mailInfo) throws Exception {

    // 1. 建立引數配置,用於連線郵件伺服器的引數配置
    Properties props = new Properties();          // 引數配置
    props.setProperty("mail.transport.protocol","smtp");  // 使用的協議（JavaMail規範要求）
    props.setProperty("mail.smtp.host",myEmailSMTPHost);  // 發件人的郵箱的 SMTP 伺服器地址
    props.setProperty("mail.smtp.auth","true");      // 需要請求認證

    // 2. 根據配置建立會話物件,用於和郵件伺服器互動
    Session session = Session.getInstance(props);
    session.setDebug(true);                 // 設定為debug模式,可以檢視詳細的傳送 log

    // 3. 建立一封郵件
    MimeMessage message = new MailSendUtils().createMimeMessage(session,mailInfo);

    // 4. 根據 Session 獲取郵件傳輸物件
    Transport transport = session.getTransport();

    // 5. 使用 郵箱賬號 和 密碼 連線郵件伺服器,這裡認證的郵箱必須與 message 中的發件人郵箱一致,否則報錯
    transport.connect(mailInfo.getSendEmailAccount(),mailInfo.getSendEmailPassword());

    // 6. 傳送郵件,發到所有的收件地址,message.getAllRecipients() 獲取到的是在建立郵件物件時新增的所有收件人,抄送人,密送人
    transport.sendMessage(message,message.getAllRecipients());

    // 7. 關閉連線
    transport.close();
  }

	
  public MimeMessage createMimeMessage(Session session,MailInfo mailInfo) throws Exception {
    // 1. 建立一封郵件
    MimeMessage message = new MimeMessage(session);

    // 2. From: 發件人（暱稱有廣告嫌疑，避免被郵件伺服器誤認為是濫發廣告以至返回失敗，請修改暱稱）
    message.setFrom(new InternetAddress(mailInfo.getSendEmailAccount(),mailInfo.getSendPersonName(),"UTF-8"));

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

    // 4. Subject: 郵件主題（標題有廣告嫌疑，避免被郵件伺服器誤認為是濫發廣告以至返回失敗，請修改標題）
    message.setSubject(mailInfo.getMailTitle(),"UTF-8");

    // 5. Content: 郵件正文（可以使用html標籤）（內容有廣告嫌疑，避免被郵件伺服器誤認為是濫發廣告以至返回失敗，請修改傳送內容）
    message.setContent(mailInfo.getMailContent(),"text/html;charset=UTF-8");

    // 6. 設定發件時間
    message.setSentDate(new Date());

    // 7. 儲存設定
    message.saveChanges();

    return message;
  }

}

總結

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