邮件工具

import java.io.File;
import java.io.FileInputStream;
import java.util.Properties;

import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
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;

public class MailUtils {
	private String host = "smtp.163.com"; // smtp服务器
	private String user = "[e-mail]"; // 用户名
	private String pwd = ""; // 密码
	private String from = ""; // 发件人地址
	private String to = ""; // 收件人地址 
	private String subject = ""; // 邮件标题

	public void setAddress(String from, String to, String subject) {
		this.from = from;
		this.to = to;
		this.subject = subject;
	}

	public void send(String txt) {
		Properties props = new Properties();
		props.put("mail.smtp.host", host);
		props.put("mail.smtp.auth", "true");
		Session session = Session.getDefaultInstance(props);
		MimeMessage message = new MimeMessage(session);
		try {
			message.setFrom(new InternetAddress(from));
			for(String sendto:to.split("#")){
				message.addRecipients(Message.RecipientType.TO, sendto);
			}
			message.setSubject(subject);
			Multipart multipart = new MimeMultipart();

			BodyPart contentPart = new MimeBodyPart();
			contentPart.setText(txt);
			multipart.addBodyPart(contentPart);

			message.setContent(multipart);
			message.saveChanges();
			Transport transport = session.getTransport("smtp");
			transport.connect(host, user, pwd);
			transport.sendMessage(message, message.getAllRecipients());
			transport.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) throws Exception {
		System.out.println(args[0]);
		System.out.println(args[1]);
		System.out.println(args[2]);
		
		//args   0  路径 1  收件人  2  标题
		MailUtils cn = new MailUtils();
		
		cn.setAddress("[e-mail]", args[1], args[2]); 
		File file = new File(args[0]);
		
		FileInputStream  fis = new FileInputStream(file);
		byte[] b = new byte[(int)file.length()];  
		fis.read(b);
		String mail = new String(b);
		cn.send(mail);
	}
}