一切
正常,包括身份验证,但是当我进入创建文件夹的步骤时,程序崩溃了。
我试过切换到SMTP,没有用,甚至不确定SMTP是什么,我尝试了其他Gmail帐户,我尝试删除行properties.put("mail.pop3.starttls.enable", "true")
,并且我试过从pop3
和pop3s
中删除 3.
private static void createProperties() {
// Create properties field.
Properties properties = new Properties();
properties.put("mail.pop3.host", host);
properties.put("mail.store.protocol", "pop3s");
properties.put("mail.pop3.port", "995");
//properties.put("mail.pop3.starttls.enable", "true");
emailSession = Session.getDefaultInstance(properties, null);
}
private static void createStore() throws MessagingException {
// Create the POP3 store object and connect with the POP server.
Store store = emailSession.getStore("pop3s");
store.connect(host, user, password);
}
private static void createFolder() throws MessagingException {
// Create the folder object and open it.
Folder emailFolder = store.getFolder("INBOX"); // Error here
emailFolder.open(Folder.READ_ONLY);
}
我希望收到一些格式良好的电子邮件。我收到以下错误:
DEBUG POP3: server doesn't support TOP, disabling it
Exception in thread "main" java.lang.NullPointerException
at GetMail.createFolder(GetMail.java:60)
at GetMail.main(GetMail.java:33)```
POP3 协议仅支持一个文件夹 - 收件箱。 请改用 IMAP。