JavaMail ---简单的邮箱附件和文本处理

package w3cblogs.club.util;

import com.sun.mail.util.MailSSLSocketFactory;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.io.File;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Properties;

public class EmailUtil {
        public static void main(String [] args) throws GeneralSecurityException {
            // 收件人电子邮箱
            String to = "[email protected]";

            // 发件人电子邮箱
            String from = "[email protected]";

            // 指定发送邮件的主机为 localhost
            String host = "smtp.qq.com";

            // 获取系统属性
            Properties properties = System.getProperties();

            // 设置邮件服务器
            properties.setProperty("mail.smtp.host", host);

            properties.put("mail.smtp.auth", "true");
            MailSSLSocketFactory sf = new MailSSLSocketFactory();
            sf.setTrustAllHosts(true);
            properties.put("mail.smtp.ssl.enable", "true");
            properties.put("mail.smtp.ssl.socketFactory", sf);

            // 获取默认session对象
            Session session = Session.getDefaultInstance(properties,new Authenticator(){
                public PasswordAuthentication getPasswordAuthentication()
                {
                    return new PasswordAuthentication("[email protected]", "************"); //发件人邮件用户名、
//                    POP3/SMTP服务 (如何使用 Foxmail 等软件收发邮件？)密钥

                }
            });

            try{
                // 创建默认的 MimeMessage 对象
                MimeMessage message = new MimeMessage(session);

                // Set From: 头部头字段
                message.setFrom(new InternetAddress(from));

                // Set To: 头部头字段
                message.addRecipient(Message.RecipientType.TO,
                        new InternetAddress(to));

                // Set Subject: 头部头字段
                message.setSubject("第二份情书");
                // 创建消息部分
                BodyPart messageBodyPart = new MimeBodyPart();
                // 设置消息体
                messageBodyPart.setText("xxxxxxxxx");

                // 创建多重消息
                Multipart multipart = new MimeMultipart();
                multipart.addBodyPart(messageBodyPart);
                messageBodyPart = new MimeBodyPart();
                String filename = "file.txt";
                DataSource source = new FileDataSource(filename);
                messageBodyPart.setDataHandler(new DataHandler(source));
                messageBodyPart.setFileName("one.txt");
                //file 绝对路径问题
                ((MimeBodyPart) messageBodyPart).attachFile(new File("E:\\Desktop\\project\\quartz\\src\\main\\java\\w3cblogs\\club\\util\\file.txt"));
                multipart.addBodyPart(messageBodyPart);
                // 发送完整消息
                message.setContent(multipart );
                // 发送消息
                Transport.send(message);
                System.out.println("Sent message successfully....from runoob.com");
            }catch (MessagingException mex) {
                mex.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
}