您必须在for循环中调用send方法。
if((recipientsBcc != null) && (recipientsBcc.length > 0))
{
addressBcc = new InternetAddress[recipientsBcc.length];
}
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(Receipt_From));
if(addressBcc != null)
{
for (int i = 0; i < recipientsBcc.length; i++)
{
addressBcc[i] = new InternetAddress(recipientsBcc[i]);
//This will send indiviaual emails.
message.setRecipients(Message.RecipientType.TO, addressBcc);
Transport.send(message);
}
}