Java发送Email邮件及SpringBoot集成
一：普通方式发送 1.导包 <!--Java MAil 发送邮件API--> <dependency> <groupId>javax.mail</groupId> <artifactId>javax.mail-api</artifactId> <version>1.6.1</version> </dependency> <!-- 真正的实现库 --> <dependency> <groupId>com.sun.mail</groupId> <artifactId>javax.mail</artifactId> <version>1.6.1</version> </dependency> 2.代码 实例：通过一个已知的163邮箱发送给他人邮件 public static void main(String[] args) throws MessagingException { // 1.创建一个程序与邮件服务器会话对象 Session Properties props = new Properties(); props.setProperty("mail.transport.protocol", "SMTP"); props.setProperty("mail.smtp.host", "smtp.163.com"); props.setProperty("mail.smtp.port", "25"); // 指定验证为true props.setProperty("mail.smtp.auth", "true"); props.setProperty("mail.smtp.timeout", "1000"); // 验证账号及密码，密码对应邮箱授权码（163密码可行，qq必须授权码） Authenticator auth = new Authenticator() { public PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("xxxx@163.com", "xxxxx"); } }; Session session = Session.getInstance(props, auth); // 2.创建一个Message，它相当于是邮件内容 Message message = new MimeMessage(session); // 设置发送者 message.setFrom(new InternetAddress("xxx同上xxx@163.com")); // 设置发送方式与接收者 message.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress("xx10086xx@qq.com")); // 设置主题 message.setSubject("邮件发送测试"); // 设置内容 message.setContent("Hello!", "text/html;charset=utf-8"); // 3.创建 Transport用于将邮件发送 Transport.send(message); } 二：SpringBoot的JavaMailSenderImpl发送 1.在resources下新建mailConfig.properties mailConfig.properties #服务器 mailHost=smtp.163.com #端口号 mailPort=25 #邮箱账号(使用者改成自己的) mailUsername=xxxxxx@163.com #邮箱密码(使用者改成自己的) mailPassword=xxxxx #时间延迟 mailTimeout=25000 2.新建一个类去读这个配置文件的内容 import java.io.IOException; import java.io.InputStream; import java.util.Properties; /** * Create by yster@foxmail.com 2018/5/28/028 21:00 */ public class MailConfig { private static final String PROPERTIES_DEFAULT = "mailConfig.properties"; public static String host; public static Integer port; public static String userName; public static String passWord; public static String emailForm; public static String timeout; public static String personal; public static Properties properties; static{ init(); } /** * 初始化 */ private static void init() { properties = new Properties(); try{ InputStream inputStream = MailConfig.class.getClassLoader().getResourceAsStream(PROPERTIES_DEFAULT); properties.load(inputStream); inputStream.close(); host = properties.getProperty("mailHost"); port = Integer.parseInt(properties.getProperty("mailPort")); userName = properties.getProperty("mailUsername"); passWord = properties.getProperty("mailPassword"); emailForm = properties.getProperty("mailUsername"); timeout = properties.getProperty("mailTimeout"); personal = "来自星星的我";//发送人 } catch(IOException e){ e.printStackTrace(); } } } 3.以上只是准备阶段，下面开始邮件编码 import cn.zyzpp.config.MailConfig; import org.springframework.mail.javamail.JavaMailSenderImpl; import org.springframework.mail.javamail.MimeMessageHelper; import javax.mail.MessagingException; import javax.mail.internet.MimeMessage; import java.io.UnsupportedEncodingException; import java.util.Properties; /** * Create by yster@foxmail.com 2018/5/28/028 21:05 */ public class MailUtil { private static final String HOST = MailConfig.host; private static final Integer PORT = MailConfig.port; private static final String USERNAME = MailConfig.userName; private static final String PASSWORD = MailConfig.passWord; private static final String emailForm = MailConfig.emailForm; private static final String timeout = MailConfig.timeout; private static final String personal = MailConfig.personal; private static JavaMailSenderImpl mailSender = createMailSender(); /** * 邮件发送器 * * @return 配置好的工具 */ private static JavaMailSenderImpl createMailSender() { JavaMailSenderImpl sender = new JavaMailSenderImpl(); sender.setHost(HOST); sender.setPort(PORT); sender.setUsername(USERNAME); sender.setPassword(PASSWORD); sender.setDefaultEncoding("Utf-8"); Properties p = new Properties(); p.setProperty("mail.smtp.timeout", timeout); p.setProperty("mail.smtp.auth", "false"); sender.setJavaMailProperties(p); return sender; } /** * 发送邮件 * * @param to 接受人 * @param subject 主题 * @param html 发送内容 * @throws MessagingException 异常 * @throws UnsupportedEncodingException 异常 */ public static void sendMail(String to, String subject, String html) throws MessagingException,UnsupportedEncodingException { MimeMessage mimeMessage = mailSender.createMimeMessage(); // 设置utf-8或GBK编码，否则邮件会有乱码 MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8"); messageHelper.setFrom(emailForm, personal); messageHelper.setTo(to); messageHelper.setSubject(subject); messageHelper.setText(html, true); mailSender.send(mimeMessage); } 4.开始发送一封邮件 public static void main(String[] args){ try { MailUtil.sendMail("xxxx@qq.com", "标题", "内容"); } catch (MessagingException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } 欢迎关注博主！
