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rvsathe 2021-05-19 17:55:23 +05:30 committed by GitHub
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commit caf8858307
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java-download-email/src/main/java/com/baeldung/downloadAttachments/DownloadEmailAttachments.java
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package com.baeldung.downloadAttachments;
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;
public class DownloadEmailAttachments {
private String downloadDirectory;
public void setSaveDirectory(String dir) {
this.downloadDirectory = dir;
}
public void downloadEmailAttachments(String host, String port, String userName, String password) throws NoSuchProviderException, MessagingException, IOException {
Properties properties = setMailServerProperties(host, port);
Store store = setSessionStoreProperties(userName, password, properties);
Folder inbox = store.getFolder("INBOX");
inbox.open(Folder.READ_ONLY);
Message[] arrayMessages = inbox.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 = "";
String attachments = "";
if (contentType.contains("multipart")) {
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())) {
String file = part.getFileName();
attachments += file + ", ";
part.saveFile(downloadDirectory + File.separator + file);
} else {
messageContent = part.getContent()
.toString();
}
}
if (attachments.length() > 1) {
attachments = attachments.substring(0, attachments.length() - 2);
}
} else if (contentType.contains("text/plain") || contentType.contains("text/html")) {
Object content = message.getContent();
if (content != null) {
messageContent = content.toString();
}
}
System.out.println("Message #" + (i + 1) + ":");
System.out.println(" From: " + from);
System.out.println(" Subject: " + subject);
System.out.println(" Sent Date: " + sentDate);
System.out.println(" Message: " + messageContent);
System.out.println(" Attachments: " + attachments);
}
inbox.close(false);
store.close();
}
public Store setSessionStoreProperties(String userName, String password, Properties properties) throws NoSuchProviderException, MessagingException {
Session session = Session.getDefaultInstance(properties);
Store store = session.getStore("pop3");
store.connect(userName, password);
return store;
}
public Properties setMailServerProperties(String host, String port) {
Properties properties = new Properties();
properties.put("mail.pop3.host", host);
properties.put("mail.pop3.port", port);
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));
return properties;
}
public static void main(String[] args) {
String host = "pop.gmail.com";
String port = "995";
String userName = "your_email";
String password = "your_password";
String saveDirectory = "valid_folder_path";
DownloadEmailAttachments receiver = new DownloadEmailAttachments();
receiver.setSaveDirectory(saveDirectory);
try {
receiver.downloadEmailAttachments(host, port, userName, password);
} catch (NoSuchProviderException ex) {
System.out.println("No provider for pop3.");
ex.printStackTrace();
} catch (MessagingException ex) {
System.out.println("Could not connect to the message store");
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}