Javax.mail实现单发和群发邮件

来源：互联网发布：心动网络校招笔试编辑：程序博客网时间：2024/05/22 09:45

=========================注意事项=============================

使用自己邮箱的时候，一定要去邮箱设置里开启邮件服务器，然后获取一个第三方客户端登陆密码，Java代码里就用第三方密码，不用以前的密码

=========================java代码如下==========================

package duan;

import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendMailUtil {

   // 设置服务器
   private static String KEY_SMTP = "mail.smtp.host";
   private static String VALUE_SMTP = "smtp.163.com";
   // 服务器验证
   private static String KEY_PROPS = "mail.smtp.auth";
   private static boolean VALUE_PROPS = true;
   // 发件人用户名、密码
   private String SEND_USER = "15566930303@163.com";
   private String SEND_UNAME = "15566930303";
   private String SEND_PWD = "libixin5210327";
   // 建立会话
   private MimeMessage message;
   private Session s;

   /*
   * 初始化方法
   */
   public SendMailUtil() {
       Properties props = System.getProperties();
       props.setProperty(KEY_SMTP, VALUE_SMTP);
       props.put(KEY_PROPS, "true");
       props.put("mail.smtp.auth", "true");
       //props.put("mail.smtp.port", "465");
       s = Session.getDefaultInstance(props, new Authenticator(){
              protected PasswordAuthentication getPasswordAuthentication() {
                  return new PasswordAuthentication(SEND_UNAME, SEND_PWD);
              }});
       s.setDebug(true);
       message = new MimeMessage(s);
   }

   /**
   * 单发
   */
   public void doSendHtmlEmail(String headName, String sendHtml,
           String[] receiveUser) {
       try {
           // 发件人
           InternetAddress from = new InternetAddress(SEND_USER);
           message.setFrom(from);

           int receiverLen = receiveUser.length;
           //群发
           for (int i = 0; i < receiverLen; i++) {
                InternetAddress toAddr = new InternetAddress(receiveUser[i]);
                message.addRecipient(javax.mail.Message.RecipientType.TO,toAddr);
           }
           // 邮件标题
           message.setSubject(headName);
           String content = sendHtml.toString();
           // 邮件内容,也可以使纯文本"text/plain"
           message.setContent(content, "text/html;charset=GBK");
           message.saveChanges();
           Transport transport = s.getTransport("smtp");
           // smtp验证，就是你用来发邮件的邮箱用户名密码
           transport.connect(VALUE_SMTP, SEND_UNAME, SEND_PWD);
           // 发送
           transport.sendMessage(message, message.getAllRecipients());
           transport.close();
           System.out.println("send success!");
       } catch (AddressException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       } catch (MessagingException e) {
           e.printStackTrace();
       }
   }
   /**
   * 群发
   */
   public void doSendHtmlEmail(String headName, String sendHtml,
           String receiveUser) {
       try {
           // 发件人
           InternetAddress from = new InternetAddress(SEND_USER);
           message.setFrom(from);

           //单发
           InternetAddress to = new InternetAddress(receiveUser);
           message.setRecipient(Message.RecipientType.TO, to);

           // 邮件标题
           message.setSubject(headName);
           String content = sendHtml.toString();
           // 邮件内容,也可以使纯文本"text/plain"
           message.setContent(content, "text/html;charset=GBK");
           message.saveChanges();
           Transport transport = s.getTransport("smtp");
           // smtp验证，就是你用来发邮件的邮箱用户名密码
           transport.connect(VALUE_SMTP, SEND_UNAME, SEND_PWD);
           // 发送
           transport.sendMessage(message, message.getAllRecipients());
           transport.close();
           System.out.println("send success!");
       } catch (AddressException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       } catch (MessagingException e) {
           e.printStackTrace();
       }
   }

   public static void main(String[] args) {
       SendMailUtil se = new SendMailUtil();
       //单发
       se.doSendHtmlEmail("宝贝我爱你", "宝贝我爱你", "342097593@qq.com");
       //群发
       //String[] receiverAddr = {"415405800@qq.com","342097593@qq.com"};
       //se.doSendHtmlEmail("宝贝我爱你", "宝贝我爱你", receiverAddr);


   }
}

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