0

我正在尝试连接到 James 服务器 localhost,但出现异常

javax.mail.MessagingException: Could not connect to SMTP host: localhost, port:25;
 nested exception is:
            java.net.SocketException: Network is unreachable: connect
            at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1545)
            at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:453)
            at javax.mail.Service.connect(Service.java:313)      
            at javax.mail.Service.connect(Service.java:172) 
            at javax.mail.Service.connect(Service.java:121) 
            at javax.mail.Transport.send0(Transport.java:190)
            at javax.mail.Transport.send(Transport.java:120)
            at mail.main(mail.java:78)
    Caused by: java.net.SocketException: Network is unreachable: connect
            at java.net.PlainSocketImpl.socketConnect(Native Method)
            at java.net.PlainSocketImpl.doConnect(Unknown Source)
            at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
            at java.net.PlainSocketImpl.connect(Unknown Source)
            at java.net.SocksSocketImpl.connect(Unknown Source)
            at java.net.Socket.connect(Unknown Source)
            at java.net.Socket.connect(Unknown Source)
            at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:267)
            at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:227)
            at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1511)
            ... 7 more

我的 James Server 的目录结构是:

C:\apache-james-2.3.2
|
|
|
|------C:\apache-james-2.3.2\james-2.3.2
|
|------C:\apache-james-2.3.2\javamail-1.4.2
|
|------C:\apache-james-2.3.2\jaf-1.0.2

这是引发异常的代码:

我没有更改 james-2.3.2 子目录的配置文件中的任何内容,那么为什么会出现该异常?

这是引发异常的代码:

// imports omitted
public class mail {
    public static void main(String[] args) {
        String to = "blue@localhost";
        String from = "red@localhost";
        String subject = "Hello";
        String body = "What's up";
        if ((from != null) && (to != null) && (subject != null) && (body != null)) {
            try { // we have mail to send
                Properties props = new Properties();
                props.put("mail.host", "localhost");
                props.put("mail.smtp.auth", "true");
                props.put("mail.debug", "true");
                Session session = Session.getInstance(props, new javax.mail.Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication("red", "red");
                    }
                });
                Message message = new MimeMessage(session);
                message.setFrom(new InternetAddress(from));
                Address[] add = { new InternetAddress(to) };
                message.setRecipients(Message.RecipientType.TO, add);
                message.setSubject(subject);
                message.setContent(body, "text/plain");
                message.setText(body);
                Transport.send(message);
                System.out.println(" Your message to " + to + " was successfully sent.");
            } catch (Throwable t) {
                t.printStackTrace();
            }
        }
    }
}
4

4 回答 4

1

例外是 localhost 无法访问。我希望您的机器没有正确配置其环回网络地址(localhost / 127.0.0.1)。

编辑:我假设您在同一台机器上运行客户端和服务器。如果没有,则不能使用 localhost / 127.0.0.1。

于 2009-09-28T06:06:28.927 回答
1

我总是尝试远程登录到邮件主机上的 25 端口,以检查是否可以访问服务器。尝试连接到 127.0.0.1 以检查 James 是否正在接受传入连接。我想你已经检查了詹姆斯的日志是否有错误?

于 2009-09-28T06:12:57.093 回答
1

尝试使用 IP 地址 127.0.0.1 而不是主机名 'localhost' - 也许您机器上的 DNS 查找设置不正确,因此它不知道名称 'localhost' 的含义。

打开文件C:\Windows\System32\drivers\etc\hosts,并确保它包含这样的一行:

127.0.0.1       localhost

另外,请尝试关闭防火墙或防病毒软件。

于 2009-09-28T08:18:54.900 回答
0
  • 尝试在 linux 中以 root 用户身份启动 apache james 或在 windows 上以管理员身份启动。并在日志文件夹中的 james-server.log 文件上检查服务器是否成功启动
  • 在主机文件中添加主机名

    127.0.0.1       localhost
    
  • 放置的文件

    on linux /etc/hosts
    on windows C:\Windows\System32\drivers\etc\hosts
    
  • 并重新启动您的服务器。
于 2013-12-03T10:04:36.233 回答