问使用GMX、IMAP和SMTP服务器发送和读取Java邮件

EN

public EmailAccount(String emailId, String password)
    {
        super();
        this.emailId = emailId;
        this.password = password;
        
        this.properties = new Properties();
        this.properties.put("incomiongHost", "imap.gmx.com");
        this.properties.put("mail.store.protocol", "imap");

        this.properties.put("mail.transport.protocol", "smtp");
        this.properties.put("mail.smtp.host", "mail.gmx.com");
        this.properties.put("mail.smtp.port", "587");
        this.properties.put("mail.smtp.auth", "true");
        this.properties.put("mail.smtp.user", emailId);
        this.properties.put("mail.smtp.password", password);
        this.properties.put("mail.smtp.starttls.enable", "true");
    }

public LoginResult login()
    {
        Authenticator authenticator = new Authenticator() 
        {
            @Override
            protected PasswordAuthentication getPasswordAuthentication()
            {
                return new PasswordAuthentication(emailAccount.getEmailId(), emailAccount.getPassword());
            }
        };
        
        try
        {
            Session session = Session.getInstance(emailAccount.getProperties(), authenticator);
            Store store = session.getStore("imap");
            store.connect(emailAccount.getProperties().getProperty("incomingHost"), emailAccount.getEmailId(),
                    emailAccount.getPassword());
            emailAccount.setMailStore(store);   // use to get mails
        }
        catch(NoSuchProviderException e)
        {
            e.printStackTrace();
            return LoginResult.FAILED_BY_NETWORK;
        }
        catch(AuthenticationFailedException e)
        {
            e.printStackTrace();
            return LoginResult.FAILED_BY_CREDENTIALS;
        }
        catch(MessagingException e)
        {
            e.printStackTrace();
            return LoginResult.FAILED_BY_UNEXPECTED_ERROR;
        }
        catch(Exception e)
        {
            e.printStackTrace();
            return LoginResult.FAILED_BY_UNEXPECTED_ERROR;
        }
        
        return LoginResult.SUCCESS;
    }