Javamail收取邮件

package a;
 
import java.util.ArrayList;
import java.util.Properties;
 
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.Session;
import javax.mail.Store;
 
public class Main {
 
	public static ArrayList<String> check(String host, String storeType, String user, String password) {
		ArrayList<String> als = new ArrayList<>();
		try {
 
			// create properties field
			Properties properties = new Properties();
 
			properties.put("mail.pop3.host", host);
			properties.put("mail.pop3.port", "995");
			properties.put("mail.pop3.starttls.enable", "true");
			Session emailSession = Session.getDefaultInstance(properties);
 
			// create the POP3 store object and connect with the pop server
			Store store = emailSession.getStore("pop3s");
 
			store.connect(host, user, password);
 
			// create the folder object and open it
			Folder emailFolder = store.getFolder("INBOX");
			emailFolder.open(Folder.READ_ONLY);
 
			// retrieve the messages from the folder in an array and print it
			Message[] messages = emailFolder.getMessages();
			System.out.println("新闻数量：" + messages.length);
 
			for (Message message : messages) {
				String s = message.getSubject();
				als.add("新闻内容：" + s);
			}
 
			// close the store and folder objects
			emailFolder.close(false);
			store.close();
 
		} catch (Exception e) {
			e.printStackTrace();
		}
		return als;
	}
 
	public static void main(String[] args) {
 
		String host = "outlook.office365.com";// change accordingly
		String mailStoreType = "pop3";
		String username = "www.oracle.com@outlook.com";// change accordingly
		String password = "123456";// change accordingly
 
		ArrayList<String> als = check(host, mailStoreType, username, password);
		for (String s : als) {
			System.out.println(s);
		}
 
	}
 
}