android send email demo

2019-11-06 09:35:59

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本文代码基于下面几个类包:

compile ‘com.sun.mail:android-mail:1.5.5’ compile ‘com.sun.mail:android-activation:1.5.5’

封装一个工具类:

import javax.activation.DataHandler;import javax.activation.DataSource;import javax.mail.Message;import javax.mail.PassWordAuthentication;import javax.mail.session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import java.io.ByteArrayInputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.security.Security;import java.util.PRoperties;/** * https://support.google.com/mail/answer/7104828?hl=en&ref_topic=3398031 */public class GmailSender extends javax.mail.Authenticator { private String mailhost = "smtp.yeah.net";// private String mailhost = "smtp.gmail.com"; private String user; private String password; private Session session; static { Security.addProvider(new JSSEProvider()); } public GMailSender(String user, String password) { this.user = user; this.password = password; Properties props = new Properties(); props.setProperty("mail.transport.protocol", "smtp"); props.setProperty("mail.host", mailhost); props.put("mail.smtp.auth", "true"); props.put("mail.smtp.port", "465"); props.put("mail.smtp.socketFactory.port", "465"); props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); props.put("mail.smtp.socketFactory.fallback", "false"); props.setProperty("mail.smtp.quitwait", "false"); session = Session.getDefaultInstance(props, this); } protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(user, password); } /** * * @param subject 标题 * @param body 内容 * @param sender 发件人 * @param recipients 收件人 * @throws Exception */ public synchronized void sendMail(String subject, String body, String sender, String recipients) throws Exception { try { MimeMessage message = new MimeMessage(session); DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain")); message.setSender(new InternetAddress(sender)); message.setSubject(subject); message.setDataHandler(handler); if (recipients.indexOf(',') > 0) message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients)); else message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients)); Transport.send(message); } catch (Exception e) { e.printStackTrace(); } } public class ByteArrayDataSource implements DataSource { private byte[] data; private String type; public ByteArrayDataSource(byte[] data, String type) { super(); this.data = data; this.type = type; } public ByteArrayDataSource(byte[] data) { super(); this.data = data; } public void setType(String type) { this.type = type; } public String getContentType() { if (type == null) return "application/octet-stream"; else return type; } public InputStream getInputStream() throws IOException { return new ByteArrayInputStream(data); } public String getName() { return "ByteArrayDataSource"; } public OutputStream getOutputStream() throws IOException { throw new IOException("Not Supported"); } }}

使用方法,特别简单:

GMailSender sender = new GMailSender("usernamexxxx@yeah.net", "passwordxxx"); sender.sendMail("标题", "内容" + content, "formxxxx@yeah.net", "toxxxx@yeah.net");

值得一提的是,发送邮箱需要进行一些安全设置,开启smtp等

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