基于 JavaEmail 简单的发送邮件点到点，一对多（图片和附件）之多收件人，多少送人

if(!StringUtil.isEmpty(message_type_to)){

if (message_type_to.contains(",")) {

String[] split = message_type_to.split(",");

InternetAddress[] adr = new InternetAddress[split.length];

for (int i = 0; i < split.length; i++) {

adr[i] = new InternetAddress(split[i]);

}

message.setRecipients(Message.RecipientType.TO, adr);

}else {

// 指明邮件的收件人

message.setRecipient(Message.RecipientType.TO, new InternetAddress(message_type_to));

}

}

//多个抄送人

if (!StringUtil.isEmpty(message_type_cc)) {

if (message_type_cc.contains(",")) {

String[] splits = message_type_cc.split(",");

// // 构建一个群发地址数组

InternetAddress[] adr = new InternetAddress[splits.length];

for (int i = 0; i < splits.length; i++) {

adr[i] = new InternetAddress(splits[i]);

}

// Message的setRecipients方法支持群发。。注意:setRecipients方法是复数和点 到点不一样

message.setRecipients(Message.RecipientType.CC, adr);

} else {

// 指明邮件的抄送人

message.setRecipient(Message.RecipientType.CC, new InternetAddress(message_type_cc));

}

}