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如何在 Java 中使用 Runtime 运行 Unix 程序？到目前为止，这就是我所拥有的。我的计划是改变接收者的邮件，以便我可以与不同的接收者循环运行它。

Runtime run = Runtime.getRuntime();
Process mailx = run.exec("cat Docs/Mailmsgtmp.txt | mailx -s 'Subject' -r 'sender@mail.com' " + "reciever@mail.com");
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2 回答 2

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不要使用Runtime.exec()，使用ProcessBuilder. 哦，Java也有发送邮件的库，所以你不需要使用外部命令......

无论如何，ProcessBuilder您可以轻松地重定向标准输入，这意味着您可以这样做：

// recipient is the email address of the... recipient
final ProcessBuilder pb = new ProcessBuilder("mailx", "-r", 
    "sender@foo.com", recipient);

final Path textToSend = Paths.get("Docs/mailtext.txt").toRealPath();
pb.redirectInput(textToSend.toFile());

// Also redirect stdout and stderr somewhere

final Process p = pb.start();

return p.waitFor();

将此代码放入一个方法中，该方法可以是，为什么不是，Callable并检查返回码。ExecutorService如果您想一次发送多封邮件，请使用。

有关如何使用纯 Java 发送电子邮件的许多链接，请参见此处。

于 2015-01-16T09:59:58.210 回答
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您应该考虑使用 Java 的内置邮件包 JavaMail。

来自http://www.tutorialspoint.com/java/java_sending_email.htm的简单示例：

  // Recipient's email ID needs to be mentioned.
  String to = "abcd@gmail.com";

  // Sender's email ID needs to be mentioned
  String from = "web@gmail.com";

  // Assuming you are sending email from localhost
  String host = "localhost";

  // Get system properties
  Properties properties = System.getProperties();

  // Setup mail server
  properties.setProperty("mail.smtp.host", host);

  // Get the default Session object.
  Session session = Session.getDefaultInstance(properties);

  try{
     // Create a default MimeMessage object.
     MimeMessage message = new MimeMessage(session);

     // Set From: header field of the header.
     message.setFrom(new InternetAddress(from));

     // Set To: header field of the header.
     message.addRecipient(Message.RecipientType.TO,
                              new InternetAddress(to));

     // Set Subject: header field
     message.setSubject("This is the Subject Line!");

     // Now set the actual message
     message.setText("This is actual message");

     // Send message
     Transport.send(message);
     System.out.println("Sent message successfully....");
  }catch (MessagingException mex) {
     mex.printStackTrace();
  }

有关详细文档，请参阅https://java.net/projects/javamail/pages/Home。

于 2015-01-16T10:02:32.050 回答