javamail

Question

使用 smtp 协议时是需要进行用户名和密码验证的

Answer 1

我以前也做过一个关于JavaMail的项目,自己做着玩的, 具体的密码验证可以这样实现:class EmailAuthenticator extends Authenticator
{
private String m_username=null;
private String m_userpass=null; void setUsername(String username)
{
m_username=username;
}
void setUserpass(String  userpass)
{
m_userpass=userpass;
} EmailAuthenticator(String username,String userpass)
{
super();
setUsername(username);
setUserpass(userpass);
}
public PasswordAuthentication getPasswordAuthentication()
{
return new PasswordAuthentication(m_username,m_userpass);
}
}String host="smtp.163.com";
String username="hahahaha";   //自己修改
String passwd="********";   //自己修改String from="[email protected]";
String to="[email protected]";
String subject="This is a letter form server";
String text="Happy Every Day!!";EmailAuthenticator mailAuthenticator=new EmailAuthenticator(username,passwd);
try
{
Properties props=new Properties();
props.put("mail.smtp.host",host);
props.put("mail.smtp.auth","true"); Session mysession=Session.getInstance(props,(Authenticator)mailAuthenticator);
MimeMessage message=new MimeMessage(mysession); message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject(subject); MimeBodyPart messageBodyPart =new MimeBodyPart();
messageBodyPart.setText(text); 
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messageBodyPart);

message.setContent(multipart);
Transport transport=mysession.getTransport("smtp");
transport.connect(host,username,passwd);
transport.sendMessage(message,message.getAllRecipients());
transport.close();
}
 catch(Exception e)
{
 out.println("发送失败");
}

Answer 2

可能是网络的原因.我试过在公司发不了,但是在家里上网就可以发.给个例子:
http://www.gz-okay.cn/ideagrace/html/doc/2005/06/22/00034.html