挂在 send() 上的共享电子邮件示例

发布于 2024-12-07 02:47:21 字数 1823 浏览 12 评论 0原文

我正在尝试让此示例使 Apache Commons 电子邮件库正常工作。这是我的代码：

    SimpleEmail email = new SimpleEmail();      
    email.setHostName("smtp.gmail.com");
    email.setSmtpPort(465);
    email.setAuthenticator(new DefaultAuthenticator("[email protected]", "password"));     
    email.setTLS(true); 
    try {
        email.setFrom("[email protected]");
        email.setSubject("TestMail");
        email.setMsg("This is a test mail ... :-)");
        email.addTo("[email protected]");
        System.out.println("Sending...");
        email.send();
        System.out.println("Email sent!");

    } catch (Exception e) {
        System.out.println("Email not sent!");
        e.printStackTrace();
    }

正如您所看到的，它与示例基本没有变化，只是我必须使用端口 465 而不是 587，因为 587 会导致 Connection returned 异常（基于这个问题）。现在这段代码挂在 email.send() 行上。我得到的唯一输出是：

Sending...

但没有抛出异常。我需要在防火墙中打开端口吗？（我可能无法做到这一点，因为我正试图在工作中做到这一点）。谢谢！

编辑

很长一段时间后我得到了这个异常：

org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.gmail.com:465
...
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465, response: -1

原文

I'm trying to get this example for the Apache Commons email library to work. Here is my code:

    SimpleEmail email = new SimpleEmail();      
    email.setHostName("smtp.gmail.com");
    email.setSmtpPort(465);
    email.setAuthenticator(new DefaultAuthenticator("[email protected]", "password"));     
    email.setTLS(true); 
    try {
        email.setFrom("[email protected]");
        email.setSubject("TestMail");
        email.setMsg("This is a test mail ... :-)");
        email.addTo("[email protected]");
        System.out.println("Sending...");
        email.send();
        System.out.println("Email sent!");

    } catch (Exception e) {
        System.out.println("Email not sent!");
        e.printStackTrace();
    }

As you can see it's basically unchanged from the example, except I have to use port 465 instead of 587 because 587 causes a Connection refused exception (based on this question). Now this code is hanging on the email.send() line. The only output I get is:

Sending...

But no exceptions are thrown. Do I need to open a port in my firewall? (I might not be able to do that as I'm trying to do this from work). Thanks!

Edit

After a long time I get this exception:

org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.gmail.com:465
...
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465, response: -1

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窝囊感情。 2024-12-14 02:47:21

根据您的编辑和对我的评论的回答，您不应该在 Java 代码中查找问题，而应该在防火墙或网络配置中查找问题。

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嗼ふ静 2024-12-14 02:47:21

您需要设置以下内容（因为您使用的是 SSL）

Properties props = new Properties();
props.put("mail.smtp.auth", true);
    props.put("mail.smtp.starttls.enable", true);
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.timeout" , "10000");
    props.put("mail.smtp.connectiontimeout" , "10000");
    props.put("mail.smtp.socketFactory.port", 465);
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    props.put("mail.smtp.socketFactory.fallback", "false");

You need to set the following (because you are using SSL)

Properties props = new Properties();
props.put("mail.smtp.auth", true);
    props.put("mail.smtp.starttls.enable", true);
    props.put("mail.smtp.host", "smtp.gmail.com");
    props.put("mail.smtp.timeout" , "10000");
    props.put("mail.smtp.connectiontimeout" , "10000");
    props.put("mail.smtp.socketFactory.port", 465);
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    props.put("mail.smtp.socketFactory.fallback", "false");

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