我一直在试图写一个应用程序，定期分析Gmail邮件的内容。我已通过JavaMail的常见问题，我已经看过一些在JavaMail的下载包中的例子，但一直无法得到这个工作。低于目前的code使下面的Gmail错误：

主持人是没有得到解决：imaps.gmail.com:993

我也尝试imap.gmail.com:143但得到的：

主持人是没有得到解决：imap.gmail.com:143

任何帮助或建议将不胜AP preciated。 GMailReader是我使用的尝试，并返回Gmail的IMAP邮件类：

 公共类GMailReader扩展javax.mail.Authenticator {
    私人字符串的邮件主机=imaps.gmail.com;
    私人字符串的用户;
    私人字符串密码;
    私人届会议;
    公共GMailReader（用户字符串，字符串密码）{
        this.user =用户;
        this.password =密码;
        属性道具=新特性（）;
        props.setProperty（mail.transport.protocol，IMAPS）;
        props.setProperty（mail.imaps.host，邮件主机）;
        props.put（mail.imaps.auth，真）;
        props.put（mail.imaps.port，993）;
        props.put（mail.imaps.socketFactory.port，993）;
        props.put（mail.imaps.socketFactory.class
                  javax.net.ssl​​.SSLSocketFactory）;
        props.put（mail.imaps.socketFactory.fallback，假）;
        props.setProperty（mail.imaps.q​​uitwait，假）;
        会议=作为Session.getDefaultInstance（道具，这一点）;
    }
    公共同步信息[] readMail（）抛出异常{
        尝试 {
            店中店= session.getStore（IMAPS）;
            store.connect（imaps.gmail.com，用户名，密码）;
            文件夹文件夹= store.getFolder（收件箱）;
            folder.open（Folder.READ_ONLY）;
            消息[]封邮件= folder.getMessages（1，10）;
            FetchProfile FP =新FetchProfile（）;
            fp.add（FetchProfile.Item.ENVELOPE）;
            folder.fetch（消息，FP）;
            返回封邮件;
        }赶上（例外五）{
            Log.e（readMail，e.getMessage（），E）;
            返回null;
        }
    }
}
 

解决方案

我找到了一个例子here这是有帮助的。我的错误是使用mail.transport.protocol，而不是mail.store.protocol。

I have been trying to write an app that periodically parses the contents of gmail messages. I have been through the JavaMail FAQ and I have looked at a number of examples in the JavaMail download package but have been unable to get this to work. The code below currently causes the following gmail error:

Host is unresolved: imaps.gmail.com:993

I have also tried imap.gmail.com:143 but get:

Host is unresolved: imap.gmail.com:143

Any help or advice would be greatly appreciated. GMailReader is the class I am using to try and return gmail imap messages:

public class GMailReader extends javax.mail.Authenticator { 
    private String mailhost = "imaps.gmail.com"; 
    private String user; 
    private String password; 
    private Session session; 
    public GMailReader(String user, String password) { 
        this.user = user; 
        this.password = password; 
        Properties props = new Properties(); 
        props.setProperty("mail.transport.protocol", "imaps"); 
        props.setProperty("mail.imaps.host", mailhost); 
        props.put("mail.imaps.auth", "true"); 
        props.put("mail.imaps.port", "993"); 
        props.put("mail.imaps.socketFactory.port", "993"); 
        props.put("mail.imaps.socketFactory.class", 
                  "javax.net.ssl.SSLSocketFactory"); 
        props.put("mail.imaps.socketFactory.fallback", "false"); 
        props.setProperty("mail.imaps.quitwait", "false"); 
        session = Session.getDefaultInstance(props, this); 
    } 
    public synchronized Message[] readMail() throws Exception { 
        try { 
            Store store = session.getStore("imaps"); 
            store.connect("imaps.gmail.com", user, password); 
            Folder folder = store.getFolder("INBOX"); 
            folder.open(Folder.READ_ONLY); 
            Message[] msgs = folder.getMessages(1, 10); 
            FetchProfile fp = new FetchProfile(); 
            fp.add(FetchProfile.Item.ENVELOPE); 
            folder.fetch(msgs, fp); 
            return msgs; 
        } catch (Exception e) { 
            Log.e("readMail", e.getMessage(), e); 
            return null; 
        } 
    } 
}

I found an example here that was helpful. My error was the use of "mail.transport.protocol" rather than "mail.store.protocol."