Java、Python实现发送邮件

Java:

首先要先下载mail.jar。链接：点击打开链接

 

public class MailUtil {
    public final static String EMAIL_FORM="[email protected]";
    public final static String EMAIL_HOST="smtp.163.com";
    public final static String EMAIL_USERNAME="[email protected]";
    public final static String EMAIL_PWD="";

    public static void sendMail(String toEmail, String subject, String content) {
        JavaMailSenderImpl senderImpl = new JavaMailSenderImpl();
        // 发送邮箱的邮件服务器
        senderImpl.setHost(EMAIL_HOST);
        // 建立邮件消息,发送简单邮件和html邮件的区别
        MimeMessage mailMessage = senderImpl.createMimeMessage();
        // 为防止乱码，添加编码集设置
        MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage, "UTF-8");

        try {
            // 接收方邮箱
            messageHelper.setTo(toEmail);
        } catch (MessagingException e) {
            throw new RuntimeException("收件人邮箱地址出错！");
        }
        try {
            // 发送方邮箱
            messageHelper.setFrom(EMAIL_FORM);
        } catch (MessagingException e) {
            throw new RuntimeException("发件人邮箱地址出错！");
        }
        try {
            messageHelper.setSubject(subject);
        } catch (MessagingException e) {
            throw new RuntimeException("邮件主题出错！");
        }
        try {
            // true 表示启动HTML格式的邮件
            messageHelper.setText(content, true);
        } catch (MessagingException e) {
            throw new RuntimeException("邮件内容出错！");
        }

        Properties prop = new Properties();
        // 将这个参数设为true，让服务器进行认证,认证用户名和密码是否正确
        prop.put("mail.smtp.auth", "true");
        // 超时时间
        prop.put("mail.smtp.timeout", "25000");

        // 添加验证
        MyAuthenticator auth = new MyAuthenticator(EMAIL_USERNAME,EMAIL_PWD);

        Session session = Session.getDefaultInstance(prop, auth);
        senderImpl.setSession(session);
        // senderImpl.setJavaMailProperties(prop);
        // 发送邮件
        senderImpl.send(mailMessage);
    }
}

 

public class MyAuthenticator extends Authenticator {

    private String username;
    private String password;

    /**
     * @param username
     * @param password
     */
    public MyAuthenticator(String username, String password) {
        super();
        this.username = username;
        this.password = password;
    }

    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(username, password);
    }

注意事项：密码为stmp服务的授权码，而不是邮箱的登录密码。

 

使用Python:

import smtplib
from email.mime.text import MIMEText
from email.header import Header

sender = '[email protected]'
receiver = ['[email protected]']

# 三个参数：第一个为文本内容，第二个 plain 设置文本格式
message = MIMEText('Python 邮件发送测试...', _subtype='plain')
message['From'] = Header("")  # 发送者
message['To'] = Header(receiver[0])  # 接收者

subject = 'Python SMTP 邮件测试'
message['Subject'] = Header(subject)

try:
    smtpObj = smtplib.SMTP()
    smtpObj.connect("smtp.163.com")
    smtpObj.login("a","1234") #用户名与密码
    smtpObj.sendmail(sender, receiver, message.as_string())
    smtpObj.close()
    print("邮件发送成功")
except smtplib.SMTPException:
    print("Error: 无法发送邮件")