Hi All,
I have java code that I am using to connect to exchange server that uses smtp protocol and download attachment from inbox. In Ecllipse I have imported external jar files activation.jar and javamail1.4.7.zip. I am getting below errors:
No provider for smtp.
javax.mail.NoSuchProviderException: invalid provider
at javax.mail.Session.getStore(Session.java:582)
at javax.mail.Session.getStore(Session.java:548)
at javax.mail.Session.getStore(Session.java:527)
at EmailAttachmentReceiver.downloadEmailAttachments(EmailAttachmentReceiver.java:70)
at EmailAttachmentReceiver.main(EmailAttachmentReceiver.java:157)
appreciate all your responses.
Java code is as below:
import java.io.File;
import java.io.IOException;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.NoSuchProviderException;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.MimeBodyPart;
/**
* This program demonstrates how to download e-mail messages and save
* attachments into files on disk.
*
* @author www.codejava.net
*
*/
public class EmailAttachmentReceiver {
private String saveDirectory;
/**
* 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) {
Properties properties = new Properties();
// server setting
properties.put("mail.smtp.host", host);
properties.put("mail.smtp.port", port);
properties.put("mail.smtp.auth", "true");
// SSL setting
//properties.setProperty("mail.smtp.socketFactory.class",
/// "javax.net.ssl.SSLSocketFactory");
// properties.setProperty("mail.smtp.socketFactory.fallback", "false");
// properties.setProperty("mail.smtp.socketFactory.port",
// String.valueOf(port));
//Session session = Session.getDefaultInstance(properties,
// new javax.mail.Authenticator() {
// protected PasswordAuthentication getPasswordAuthentication() {
// return new PasswordAuthentication(user,password);
// }
// });
Session session = Session.getDefaultInstance(properties);
try {
// connects to the message store
Store store = session.getStore("smtp");
store.connect(host,userName, password);
// opens the inbox folder
Folder folderInbox = store.getFolder("INBOX");
folderInbox.open(Folder.READ_WRITE);
// 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 from = 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();
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();
}
}
// print out details of each message
System.out.println("Message #" + (i + 1) + ":");
System.out.println("\t From: " + from);
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 smtp.");
ex.printStackTrace();
} catch (MessagingException ex) {
System.out.println("Could not connect to the message store");
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
}
/**
* Runs this program with SMTP server
*/
public static void main(String[] args) {
String host = "smtpgate.domain.com";
String port = "25";
String userName = "example@domain.com";
String password = "password";
String saveDirectory = "C:\\Temp";
EmailAttachmentReceiver receiver = new EmailAttachmentReceiver();
receiver.setSaveDirectory(saveDirectory);
receiver.downloadEmailAttachments(host, port, userName, password);
}
}