Android发送邮件

需要三个jar包，可自行百度进行下载。
activation.jar
additionnal.jar
mail.jar
本例子是使用163邮箱进行邮件发送的。
这里面有些注意事项，下图中的权限是要开启的

另外一个注意事项就是，代码中的账户是 你的邮箱账号，但是密码是下图中的授权码，否则的话会提示“授权失败”

所需要的权限

<uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

废话不多说，直接上代码。

import android.os.AsyncTask;import java.io.IOException;import java.util.Date;import java.util.List;import java.util.Properties;import javax.mail.Authenticator;import javax.mail.Message;import javax.mail.MessagingException;import javax.mail.Multipart;import javax.mail.PasswordAuthentication;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeBodyPart;import javax.mail.internet.MimeMessage;import javax.mail.internet.MimeMultipart;/** * 邮件管理类 */public class MailManager {    //以163邮箱为例,需要提前在163邮箱设置里面开启smtp.    //发送账户    private static final String SENDER_NAME = "[e-mail]";    //发送账户的密码(客户端授权密码)    private static final String SENDER_PASS = "wugui1234";    //邮箱服务器    private static final String VALUE_MAIL_HOST = "smtp.163.com";    //邮箱服务器主机    private static final String KEY_MAIL_HOST = "mail.smtp.host";    //邮箱是否需要鉴权    private static final String KEY_MAIL_AUTH = "mail.smtp.auth";    //需要鉴权    private static final String VALUE_MAIL_AUTH = "true";    public static MailManager getInstance() {        return InstanceHolder.instance;    }    private MailManager() {    }    private static class InstanceHolder {        private static MailManager instance = new MailManager();    }    class MailTask extends AsyncTask<Void, Void, Boolean> {        private MimeMessage mimeMessage;        public MailTask(MimeMessage mimeMessage) {            this.mimeMessage = mimeMessage;        }        @Override        protected Boolean doInBackground(Void... voids) {            try {                Transport.send(mimeMessage);                return Boolean.TRUE;            } catch (MessagingException e) {                e.printStackTrace();                return Boolean.FALSE;            }        }    }    public void sendMail(final String title, final String content) {        MimeMessage mimeMessage = createMessage(title, content);        MailTask mailTask = new MailTask(mimeMessage);        mailTask.execute();    }    public void sendMailWithFile(String title, String content, String filePath) {        MimeMessage mimeMessage = createMessage(title, content);        appendFile(mimeMessage, filePath);        MailTask mailTask = new MailTask(mimeMessage);        mailTask.execute();    }    public void sendMailWithMultiFile(String title, String content, List<String> pathList) {        MimeMessage mimeMessage = createMessage(title, content);        appendMultiFile(mimeMessage, pathList);        MailTask mailTask = new MailTask(mimeMessage);        mailTask.execute();    }    private Authenticator getAuthenticator() {        return new Authenticator(){            @Override            protected PasswordAuthentication getPasswordAuthentication() {                return new PasswordAuthentication(SENDER_NAME, SENDER_PASS);            }        };    }    private MimeMessage createMessage(String title, String content) {        Properties properties = System.getProperties();        properties.put(KEY_MAIL_HOST, VALUE_MAIL_HOST);        properties.put(KEY_MAIL_AUTH, VALUE_MAIL_AUTH);        Session session = Session.getInstance(properties, getAuthenticator());        //创建消息        MimeMessage mimeMessage = new MimeMessage(session);        try {            //设置发送者            mimeMessage.setFrom(new InternetAddress(SENDER_NAME));            //设置接收者            InternetAddress[] addresses = new InternetAddress[]{new InternetAddress(SENDER_NAME)};            mimeMessage.setRecipients(Message.RecipientType.TO,                    "[e-mail]");            //设置邮件的主题            mimeMessage.setSubject(title);            //设置邮件的内容            MimeBodyPart textPart = new MimeBodyPart();            textPart.setContent(content, "text/html;charset=gbk");            Multipart multipart = new MimeMultipart();            multipart.addBodyPart(textPart);            mimeMessage.setContent(multipart);            //设置发送时间            mimeMessage.setSentDate(new Date());        } catch (MessagingException e) {            e.printStackTrace();        }        return mimeMessage;    }    //添加文件附件    private void appendFile(MimeMessage message, String filePath) {        try {            Multipart multipart = (Multipart) message.getContent();            MimeBodyPart filePart = new MimeBodyPart();            filePart.attachFile(filePath);            multipart.addBodyPart(filePart);        } catch (IOException e) {            e.printStackTrace();        } catch (MessagingException e) {            e.printStackTrace();        }    }    //添加多个文件附件    private void appendMultiFile(MimeMessage message, List<String> pathList) {        try {            Multipart multipart = (Multipart) message.getContent();            for (String path : pathList) {                MimeBodyPart filePart = new MimeBodyPart();                filePart.attachFile(path);                multipart.addBodyPart(filePart);            }        } catch (IOException e) {            e.printStackTrace();        } catch (MessagingException e) {            e.printStackTrace();        }    }}

调用时代码

  //发送邮件  MailManager.getInstance().sendMailWithFile("123","123","/sdcard/Test/log.txt");

感谢：https://github.com/Dev-Wiki/MailSender