用Java向多个收件人发送邮件

我想使用以下方法向多个收件人发送消息：

message.addRecipient(Message.RecipientType.TO, String arg1);

Or

message.setRecipients(Message.RecipientType.TO,String arg1);

但一个困惑是，在第二个参数中，如何传递多个地址，例如：

message.addRecipient(Message.RecipientType.CC, "[email protected] /cdn-cgi/l/email-protection,[email protected] /cdn-cgi/l/email-protection,[email protected] /cdn-cgi/l/email-protection");

Ormessage.addRecipient(Message.RecipientType.CC, "[电子邮件受保护] /cdn-cgi/l/email-protection;[电子邮件受保护] /cdn-cgi/l/email-protection;[电子邮件受保护] /cdn-cgi/l/email-protection");

我也可以使用替代方法发送消息，但我想知道上述方法的用途。

如果我不能使用它（到目前为止我还没有得到上述要求的任何答案）那么这个方法需要在邮件 API 中吗？

如果你调用addRecipient多次，它将把给定的收件人添加到给定时间的收件人列表中（TO，CC https://en.wiktionary.org/wiki/carbon_copy#Noun, and BCC https://en.wiktionary.org/wiki/blind_carbon_copy#English).

例如：

message.addRecipient(Message.RecipientType.CC, InternetAddress.parse("[email protected] /cdn-cgi/l/email-protection"));
message.addRecipient(Message.RecipientType.CC, InternetAddress.parse("[email protected] /cdn-cgi/l/email-protection"));
message.addRecipient(Message.RecipientType.CC, InternetAddress.parse("[email protected] /cdn-cgi/l/email-protection"));

它将把这三个地址添加到 CC。

如果您想一次添加所有地址，您应该使用setRecipients or addRecipients并为其提供一个地址数组

Address[] cc = new Address[] {InternetAddress.parse("[email protected] /cdn-cgi/l/email-protection"),
                               InternetAddress.parse("[email protected] /cdn-cgi/l/email-protection"),
                               InternetAddress.parse("[email protected] /cdn-cgi/l/email-protection")};
message.addRecipients(Message.RecipientType.CC, cc);

您还可以使用InternetAddress.parse解析地址列表：

message.addRecipients(Message.RecipientType.CC,
                      InternetAddress.parse("[email protected] /cdn-cgi/l/email-protection,[email protected] /cdn-cgi/l/email-protection,[email protected] /cdn-cgi/l/email-protection"));