当我在Servlet或JSP中调用java类函数时，我得到了一个异常javax.mail.AuthenticationFailedException：套接字上的EOF。虽然 DowAttAndSetInfoInDB.java 类工作正常。我可以解决它两天，因为我是java mail api的初学者。我做了一些谷歌搜索，但问题仍未解决。
DowAttAndSetInfoInDB.java
package com.unread.donatt;
public class DowAttAndSetInfoInDB {
private String saveDirectory;
Connection con = GetCon.getCon();
/**
* Sets the directory where attached files will be stored.
*
* @param dir absolute path of the directory
*/
public void setSaveDirectory(String dir) {
this.saveDirectory = dir;
}
/**
* Downloads new messages and saves attachments to disk if any.
*
* @param host
* @param port
* @param userName
* @param password
*/
public void downloadEmailAttachments(String host, String port,
String userName, String password) throws SQLException {
Properties properties = new Properties();
// server setting
properties.put("mail.pop3.host", host);
properties.put("mail.pop3.port", port);
// SSL setting
properties.setProperty("mail.pop3.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
properties.setProperty("mail.pop3.socketFactory.fallback", "false");
properties.setProperty("mail.pop3.socketFactory.port",
String.valueOf(port));
Session session = Session.getDefaultInstance(properties);
try {
// connects to the message store
Store store = session.getStore("pop3");
store.connect(userName, password);
// opens the inbox folder
Folder folderInbox = store.getFolder("INBOX");
folderInbox.open(Folder.READ_ONLY);
// fetches new messages from server
Message[] arrayMessages = folderInbox.getMessages();
for (int i = 0; i < arrayMessages.length; i++) {
Message message = arrayMessages[i];
Address[] fromAddress = message.getFrom();
String froms = fromAddress[0].toString();
String subject = message.getSubject();
String sentDate = message.getSentDate().toString();
String contentType = message.getContentType();
String messageContent = "";
// store attachment file name, separated by comma
String attachFiles = "";
if (contentType.contains("multipart")) {
// content may contain attachments
Multipart multiPart = (Multipart) message.getContent();
//System.out.println(multiPart);
int numberOfParts = multiPart.getCount();
for (int partCount = 0; partCount < numberOfParts; partCount++) {
MimeBodyPart part = (MimeBodyPart) multiPart.getBodyPart(partCount);
if (Part.ATTACHMENT.equalsIgnoreCase(part.getDisposition())) {
// this part is attachment
String fileName = part.getFileName();
attachFiles += fileName + ", ";
part.saveFile(saveDirectory + File.separator + fileName);
} else {
// this part may be the message content
messageContent = part.getContent().toString();
}
}
if (attachFiles.length() > 1) {
attachFiles = attachFiles.substring(0, attachFiles.length() - 2);
}
} else if (contentType.contains("text/plain")
|| contentType.contains("text/html")) {
Object content = message.getContent();
if (content != null) {
messageContent = content.toString();
}
}
messageContent = getTextFromMessage(message);
String insertMessage = "INSERT INTO inbox"
+ "(userName, froms, subject, sentDate, messageContent,attachFiles) VALUES"
+ "(?,?,?,?,?,?)";
PreparedStatement ps = con.prepareStatement(insertMessage);
ps.setString(1, userName);
ps.setString(2, froms);
ps.setString(3, subject);
ps.setString(4, sentDate);
ps.setString(5, messageContent);
ps.setString(6, attachFiles);
int rs = ps.executeUpdate();
// print out details of each message
System.out.println("Message #" + (i + 1) + ":");
System.out.println("\t From: " + froms);
System.out.println("\t Subject: " + subject);
System.out.println("\t Sent Date: " + sentDate);
System.out.println("\t Message: " + messageContent);
System.out.println("\t Attachments: " + attachFiles);
}
// disconnect
folderInbox.close(false);
store.close();
} catch (NoSuchProviderException ex) {
System.out.println("No provider for pop3.");
} catch (MessagingException ex) {
System.out.println("Could not connect to the message store " +ex);
} catch (IOException ex) {
}
}
private String getTextFromMessage(Message message) throws MessagingException, IOException {
String result = "";
if (message.isMimeType("text/plain")) {
result = message.getContent().toString();
} else if (message.isMimeType("multipart/*")) {
MimeMultipart mimeMultipart = (MimeMultipart) message.getContent();
result = getTextFromMimeMultipart(mimeMultipart);
}
return result;
}
private String getTextFromMimeMultipart(
MimeMultipart mimeMultipart) throws MessagingException, IOException{
String result = "";
int count = mimeMultipart.getCount();
for (int i = 0; i < count; i++) {
BodyPart bodyPart = mimeMultipart.getBodyPart(i);
if (bodyPart.isMimeType("text/plain")) {
result = result + "\n" + bodyPart.getContent();
break; // without break same text appears twice in my tests
} else if (bodyPart.isMimeType("text/html")) {
String html = (String) bodyPart.getContent();
result = result + "\n" + org.jsoup.Jsoup.parse(html).text();
} else if (bodyPart.getContent() instanceof MimeMultipart){
result = result + getTextFromMimeMultipart((MimeMultipart)bodyPart.getContent());
}
}
return result;
}
/**
* Runs this program with Gmail POP3 server
*
* @param args
*/
public static void main(String[] args) throws SQLException {
String host = "pop.gmail.com";
String port = "995";
String userName = "dummy2263@gmail.com";
String password = "****";
String saveDirectory = "C:\\Users\\ajay\\Desktop\\attch";
DowAttAndSetInfoInDB receiver = new DowAttAndSetInfoInDB();
receiver.setSaveDirectory(saveDirectory);
receiver.downloadEmailAttachments(host, port, userName, password);
}
}
inboxunread.jsp
<%
String host = "pop.gmail.com";
String port = "995";//587
String userName = "dummy2263@gmail.com";
String password = "****";
String saveDirectory = "C:\\Users\\ajay\\Desktop\\attch";
DowAttAndSetInfoInDB receiver = new DowAttAndSetInfoInDB();
receiver.setSaveDirectory(saveDirectory);
receiver.downloadEmailAttachments(host, port, userName, password);
%>