java - 无法通过 javamail 发送 zip 文件

Question

我正在尝试通过 javamail 发送包含 zip 文件的附件。但是，在发送时会抛出异常

com.sun.mail.smtp.SMTPSendFailedException: 552-5.7.0 This message was blocked because its content presents a potential 552-5.7.0 security issue.

我将 MIME 内容类型添加为 application/zip 但面向

javax.mail.MessagingException: IOException while sending message;
 nested exception is:
 javax.activation.UnsupportedDataTypeException: no object DCH for MIME type 
 application/zip at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1167)

下面是我的代码片段:

BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setContent(message, "application/zip");
Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messageBodyPart);
File srcFile = new File(System.getProperty("user.dir")+ "/Reports/");
messageBodyPart = new MimeBodyPart();
DataSource source = new FileDataSource(srcFile.getPath()+"/Report.zip");
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName("Report.zip");
multipart.addBodyPart(messageBodyPart);
message.setContent(multipart);
Transport.send(message);

当我删除 .zip 扩展名时，它可以正常工作，但不能用于 .zip。

Answer 1

您的代码添加了两次附件，我确信这不是您想要的。将您的代码替换为:

MimeBodyPart messageBodyPart = new MimeBodyPart();
String srcFile = System.getProperty("user.dir") + "/Reports/Report.zip";
messageBodyPart.attachFile(srcFile, "application/zip", "base64");
multipart.addBodyPart(messageBodyPart);
message.setContent(multipart);
Transport.send(message);