Java实现QQ邮件发送

package ddd;

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.BodyPart;
import javax.mail.Message;
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;

import com.sun.mail.util.MailSSLSocketFactory;

public class SendEmail {

    public static void main(String[] args) {
        try {
            
            //设置发件人
            String from = "xxx@qq.com";
            
            //设置收件人
            String to = "xxxx@qq.com";
            
            //设置邮件发送的服务器，这里为QQ邮件服务器
            String host = "smtp.qq.com";
            
            //获取系统属性
            Properties properties = System.getProperties();
            
            //SSL加密
            MailSSLSocketFactory sf = new MailSSLSocketFactory();
            sf.setTrustAllHosts(true);
            properties.put("mail.smtp.ssl.enable", "true");
            properties.put("mail.smtp.ssl.socketFactory", sf);
            
            //设置系统属性
            properties.setProperty("mail.smtp.host", host);
            properties.put("mail.smtp.auth", "true");
            
            //获取发送邮件会话、获取第三方登录授权码
            Session session = Session.getDefaultInstance(properties, new Authenticator() {
                @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication(from, "第三方登录授权码");
                }
            });
            
            Message message = new MimeMessage(session);
            
            //防止邮件被当然垃圾邮件处理，披上Outlook的马甲
            message.addHeader("X-Mailer","Microsoft Outlook Express 6.00.2900.2869");
            
            message.setFrom(new InternetAddress(from));
            
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
            
            //邮件标题
            message.setSubject("This is the subject line!");
            
            BodyPart bodyPart = new MimeBodyPart();
            
            bodyPart.setText("我发送了文件给你");
            
            Multipart multipart = new MimeMultipart();
            
            multipart.addBodyPart(bodyPart);
            
            //附件
            bodyPart = new MimeBodyPart();
            String fileName = "文件路径";
            DataSource dataSource = new FileDataSource(fileName);
            bodyPart.setDataHandler(new DataHandler(dataSource));
            bodyPart.setFileName("文件显示的名称");
            multipart.addBodyPart(bodyPart);
            
            message.setContent(multipart);
            
            Transport.send(message);
            System.out.println("mail transports successfully");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}