java Javamail, Transport.send() 很慢
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Javamail, Transport.send() very slow
提问by mitch
I have written a method for sending emails in bulk but it is very very slow (around 3 mails every 10 seconds). I want to send thousands of mails. Is there any way to do this much more faster?
我编写了一种批量发送电子邮件的方法，但速度非常慢（每 10 秒大约 3 封邮件）。我想发送数千封邮件。有没有办法更快地做到这一点？
I am using gmail now but only for test, finally I want to send using my own SMTP server.
我现在使用 gmail 但仅用于测试，最后我想使用我自己的 SMTP 服务器发送。
Here is the code:
这是代码：
public boolean sendMessages()
{
try
{
Session session = Session.getInstance(this._properties, new javax.mail.Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("user", "password");
}
});
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(this.getFrom()));
message.setSubject(this.getSubject());
message.setText(this.getBody());
for (int i = 0, c = this._addresses.size(); i < c; i++)
{
message.setRecipient(Message.RecipientType.TO, new InternetAddress(this._addresses.get(i)));
Transport.send(message);
}
return true;
}
catch(AuthenticationFailedException e) {
e.printStackTrace();
return false;
}
catch(MessagingException e) {
e.printStackTrace();
return false;
}
}
回答by mitch
Ok, thank you for your suggestions.
好的，谢谢你的建议。
My solution is:
我的解决办法是：
Transport transport = session.getTransport("smtp");
transport.connect(this._properties.getProperty("mail.smtp.host"),
Integer.parseInt(this._properties.getProperty("mail.smtp.port")),
this._properties.getProperty("mail.smtp.user"),
this._properties.getProperty("mail.smtp.password"));
Address[] addr = new Address[this._addresses.size()];
for (int i = 0, c = this._addresses.size(); i < c; i++)
{
addr[i] = new InternetAddress(this._addresses.get(i));
}
transport.sendMessage(message, addr);
