Java使用JavaMail发送邮件的方法

import javax.mail.Authenticator;import javax.mail.PasswordAuthentication;public class Email_Autherticator extends Authenticator {  String username = "你邮箱的用户名";  String password = "你邮箱的密码";  public Email_Autherticator() { super();  }  public Email_Autherticator(String user,String pwd){ super(); username = user; password = pwd;  }  public PasswordAuthentication getPasswordAuthentication(){ return new PasswordAuthentication(username,password);  }}

import java.util.Date;import java.util.Properties;import javax.mail.Address;import javax.mail.Authenticator;import javax.mail.Message;import javax.mail.SendFailedException;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;public class Mail {  private String host = "smtp.126.com";  private String mail_head_name = "this is head of this mail";  private String mail_head_value = "this is head of this mail";  private String mail_to = "254173774@qq.com";  private String mail_from = "hackboyo@126.com";  private String mail_subject = "this is the subject of this test mail";  private String mail_body = "this is mail_body of this test mail";  private String personalName = "我的邮件";  public void sendMail() throws SendFailedException{ try {   Properties props = new Properties();//获取系统环境   Authenticator auth = new Email_Autherticator();//进行邮件服务用户认证   props.put("mail.smtp.host", host);   props.put("mail.smtp.auth", "true");   System.out.println(props);   Session session = Session.getDefaultInstance(props,auth);   //设置session,和邮件服务器进行通讯   MimeMessage message = new MimeMessage(session);   message.setContent("Hello","text/plain");//设置邮件格式   message.setSubject(mail_subject);//设置邮件主题   message.setText(mail_body);//设置邮件内容   message.setHeader(mail_head_name, mail_head_value);//设置邮件标题   message.setSentDate(new Date());//设置邮件发送时期   Address address = new InternetAddress(mail_from,personalName);   message.setFrom(address);//设置邮件发送者的地址   Address toaddress = new InternetAddress(mail_to);//设置邮件接收者的地址   message.addRecipient(Message.RecipientType.TO,toaddress);   System.out.println(message);   Transport.send(message);   System.out.println("Send Mail Ok!"); } catch (Exception e) {   e.printStackTrace(); } //return flag;  }}

public class Test {  public static void main(String[] args) { Mail m = new Mail(); try {   m.sendMail(); } catch (Exception e) { }  }}