Java发送邮件

用Java发送邮件（须要自己导入相应的jar包）
public class SendMailDemo {
@Test//纯文本内容
public void send1() throws Exception{
Properties p=new Properties();
p.setProperty("mail.host", "smtp.sina.com");
p.setProperty("mail.smtp.auth", "true");
Session session=Session.getDefaultInstance(p,
new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("邮箱名","邮箱密码");
}
});
session.setDebug(true);//一定要以debug的方式进行通讯
//准备邮件
MimeMessage msg=new MimeMessage(session);//从session中创建邮件
msg.setFrom(new InternetAddress("发送者邮箱地址"));//发送地址
msg.setRecipient(RecipientType.TO, new InternetAddress("接收者邮箱地址"));
msg.setSubject("呦呦呦呦切克闹");//设置邮件的主题
msg.setContent("哇哇哇哇哇哇哇哇哇哇噻", "text/plain;charset=utf-8");//纯文本格式
//msg.setContent("还可以用<a href='http://www.baidu.com'>标签</a>", "text/html;charset=utf-8");
//发送邮件
Transport.send(msg);
}

@Test//文本内容+附件
public void send2() throws Exception{
Properties p=new Properties();
p.setProperty("mail.host", "smtp.sina.com");
p.setProperty("mail.smtp.auth", "true");
Session session=Session.getDefaultInstance(p,
new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("hncujava","hncu1234567");
}
});
session.setDebug(true);//一定要以debug的方式进行通讯
//准备邮件
MimeMessage msg = new MimeMessage(session); //从session中创建邮件
msg.setFrom( new InternetAddress("填写发送者邮箱") );
msg.setRecipient(RecipientType.TO, new InternetAddress("填写接收者邮箱"));
msg.setSubject("邮件的主题OKOK!");//设置邮件主题
//正文内容
MimeBodyPart body1=new MimeBodyPart();
body1.setContent("还可以用<a href='http://www.baidu.com'>标签</a>", "text/html;charset=utf-8");
//body2：附件1
MimeBodyPart body2=new MimeBodyPart();
body2.setDataHandler(new DataHandler(new FileDataSource("./img/a.jpg")));
body2.setFileName(MimeUtility.encodeText("图片1.jpg"));//能够支持中文的附件文件名
//body3：附件2
MimeBodyPart body3=new MimeBodyPart();
body3.setDataHandler(new DataHandler(new FileDataSource("./img/b.jpg")));
body3.setFileName(MimeUtility.encodeText("图片2.jpg"));//能够支持中文的附件文件名

MimeMultipart multipart=new MimeMultipart();
multipart.addBodyPart(body1);//默认按顺序加
multipart.addBodyPart(body2);
multipart.addBodyPart(body3);
msg.setContent(multipart);
//发送邮件
Transport.send(msg);
}
}