android 自动发送邮件手机自动发邮件

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网络智叶 2023-06-27 20:12:04

文章标签 android 自动发送邮件 android Mail 邮件 java 文章分类 Android 移动开发

为了净化网络大环境，请不要利用这个方法发送垃圾邮件，敬请合理合法使用！

我们在用邮箱注册一个软件的时候，通常它都会给我的邮箱发送个激活确认的邮件。这个一般情况下都是服务器端来进行处理的，但是突然间想知道Android客户端应该会有方法同样实现这个功能——利用某个特定邮箱账号向用户自动发送邮件！Android系统有自带的Email进行发送邮件，但这种会展示给用户，我们这里讲的是默认不显示给用户，也就是"偷偷"的发送！

我们需要用到三个jar包 android_mail.jar 。

首先，我们先定义一个邮件的bean类

public class MailBean implements Serializable {
    //发送人
    private String sender;

    // 收件人
    private List<String> recipientsTO;

    // 抄送人
    private List<String> recipientsCC;

    // 密送人
    private List<String> recipientsBCC;

    //主题
    private String subject;

    // 正文
    private String body;

    // 附件列表
    private List<String> attachments;


    public String getSender() {
        return sender;
    }

    public void setSender(String sender) {
        this.sender = sender;
    }

    public List<String> getRecipientsTO() {
        return recipientsTO;
    }

    public void setRecipientsTO(List<String> recipientsTO) {
        this.recipientsTO = recipientsTO;
    }

    public List<String> getRecipientsCC() {
        return recipientsCC;
    }

    public void setRecipientsCC(List<String> recipientsCC) {
        this.recipientsCC = recipientsCC;
    }

    public List<String> getRecipientsBCC() {
        return recipientsBCC;
    }

    public void setRecipientsBCC(List<String> recipientsBCC) {
        this.recipientsBCC = recipientsBCC;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public List<String> getAttachments() {
        return attachments;
    }

    public void setAttachments(List<String> attachments) {
        this.attachments = attachments;
    }

    @Override
    public String toString() {
        return "MailBean{" +
                "sender='" + sender + '\'' +
                ", recipientsTO=" + recipientsTO +
                ", recipientsCC=" + recipientsCC +
                ", recipientsBCC=" + recipientsBCC +
                ", subject='" + subject + '\'' +
                ", body='" + body + '\'' +
                ", attachments=" + attachments +
                '}';
    }
}

接下来就是最重要的发送邮件的工具类：

配置发送邮件账户的属性：我这里用的是126邮箱，使用gmail等其他邮箱smtp的配置都失效了，暂时还未找到解决的方法，如谁有解决方法，还请评论告知！

private final static Session session;
    private final static String user = "*****@126.com";//你的邮箱账号
    private final static String password = "******";//你的邮箱密码

    static {
        Properties properties = new Properties();
        properties.put("mail.smtp.host", "smtp.126.com");//邮箱的host地址，基本都是smtp.****.com
        properties.put("mail.smtp.port", "25");//邮箱smtp端口号
        properties.put("mail.smtp.auth", "true");//开启smtp验证
        properties.put("mail.debug", "false");

        session = Session.getInstance(properties, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(user, password);
            }
        });
    }

接下载是地址字符串构造成网络地址对象的方法，这里考虑到可能会发给多个账号等。

private static InternetAddress[] listToAddresses(List<String> list) {
        if (list != null && !list.isEmpty()) {
            int size = list.size();
            InternetAddress[] addresses = new InternetAddress[size];
            try {
                for (int i = 0; i < size; i++) {
                    addresses[i] = new InternetAddress(list.get(i));
                }
                return addresses;
            } catch (AddressException ex) {
                ex.printStackTrace();
            }
        }
        return null;
    }

执行发送邮件的方法：

public static void sendMail(MailBean mail) {
        try {
            MimeMessage msg = new MimeMessage(session);
            //设置邮件发件人
            msg.setFrom(new InternetAddress(user));
            //设置邮件收件人
            msg.setRecipients(Message.RecipientType.TO, listToAddresses(mail.getRecipientsTO()));
            //设置邮件抄送人
            msg.setRecipients(Message.RecipientType.CC, listToAddresses(mail.getRecipientsCC()));
            //设置邮件密送人
            msg.setRecipients(Message.RecipientType.BCC, listToAddresses(mail.getRecipientsBCC()));
            //设置邮件主题
            msg.setSubject(mail.getSubject(), "utf-8");
            //设置邮件正文
            Multipart mp = new MimeMultipart();
            MimeBodyPart mbp = new MimeBodyPart();
            mbp.setContent(mail.getBody(), "text/html; charset=utf-8");
            mp.addBodyPart(mbp);
            //设置邮件附件
            List<String> attachments = mail.getAttachments();
            if (attachments != null && !attachments.isEmpty()) {
                for (String attachment : attachments) {
                    MimeBodyPart attach = new MimeBodyPart();
                    attach.attachFile(attachment);
                    mp.addBodyPart(attach);
                }
            }

            msg.setContent(mp);
            //设置发送时间
            msg.setSentDate(new Date());
            //发送
            Transport.send(msg);
        } catch (MessagingException | IOException ex) {
            ex.printStackTrace();
        }
    }

完整的代码：

public class MailUtil {

 private final static Session session;
    private final static String user = "*****@126.com";//你的邮箱账号
    private final static String password = "******";//你的邮箱密码

    static {
        Properties properties = new Properties();
        properties.put("mail.smtp.host", "smtp.126.com");//邮箱的host地址，基本都是smtp.****.com
        properties.put("mail.smtp.port", "25");//邮箱smtp端口号
        properties.put("mail.smtp.auth", "true");//开启smtp验证
        properties.put("mail.debug", "false");

        session = Session.getInstance(properties, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(user, password);
            }
        });
    }


    public static void sendMail(MailBean mail) {
        try {
            MimeMessage msg = new MimeMessage(session);
            //设置邮件发件人
            msg.setFrom(new InternetAddress(user));
            //设置邮件收件人
            msg.setRecipients(Message.RecipientType.TO, listToAddresses(mail.getRecipientsTO()));
            //设置邮件抄送人
            msg.setRecipients(Message.RecipientType.CC, listToAddresses(mail.getRecipientsCC()));
            //设置邮件密送人
            msg.setRecipients(Message.RecipientType.BCC, listToAddresses(mail.getRecipientsBCC()));
            //设置邮件主题
            msg.setSubject(mail.getSubject(), "utf-8");
            //设置邮件正文
            Multipart mp = new MimeMultipart();
            MimeBodyPart mbp = new MimeBodyPart();
            mbp.setContent(mail.getBody(), "text/html; charset=utf-8");
            mp.addBodyPart(mbp);
            //设置邮件附件
            List<String> attachments = mail.getAttachments();
            if (attachments != null && !attachments.isEmpty()) {
                for (String attachment : attachments) {
                    MimeBodyPart attach = new MimeBodyPart();
                    attach.attachFile(attachment);
                    mp.addBodyPart(attach);
                }
            }

            msg.setContent(mp);
            //设置发送时间
            msg.setSentDate(new Date());
            //发送
            Transport.send(msg);
        } catch (MessagingException | IOException ex) {
            ex.printStackTrace();
        }
    }

    /**
     * 把list里的地址字符串构造成网络地址对象的数组
     */
    private static InternetAddress[] listToAddresses(List<String> list) {
        if (list == null || list.isEmpty()) return null;
        int size = list.size();
        InternetAddress[] addresses = new InternetAddress[size];
        try {
            for (int i = 0; i < size; i++) {
                addresses[i] = new InternetAddress(list.get(i));
            }
            return addresses;
        } catch (AddressException ex) {
            ex.printStackTrace();
        }
        return null;
    }
}

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