Created
March 12, 2013 21:28
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Download all e-mails in a specific folder into a single text file. Specific for Google Apps accounts.
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package com.kentcdodds.gmailretriever.main; | |
import java.io.File; | |
import java.io.FileOutputStream; | |
import java.io.IOException; | |
import java.io.PrintWriter; | |
import java.util.Date; | |
import java.util.HashMap; | |
import java.util.HashSet; | |
import java.util.Map; | |
import java.util.Properties; | |
import java.util.Set; | |
import java.util.logging.Level; | |
import java.util.logging.Logger; | |
import javax.mail.*; | |
import javax.mail.internet.InternetAddress; | |
import javax.mail.internet.MimeMultipart; | |
/** | |
* | |
* @author kentdodds | |
*/ | |
public class Main { | |
private Store store; | |
private String username = "ACCOUNT_NAME@gmail.com", | |
password = "PASSWORD", | |
folderName = "FOLDER NAME", | |
outputFile = System.getProperty("user.home") + "/Desktop/" + folderName + ".txt", | |
nl = System.getProperty("line.separator"); | |
private int limit = -1; | |
/** | |
* @param args the command line arguments | |
*/ | |
public static void main(String[] args) throws MessagingException, IOException { | |
Main m = new Main(); | |
m.connectToGoogle(); | |
m.printFolderContents(); | |
} | |
private void connectToGoogle() throws MessagingException { | |
Properties props = System.getProperties(); | |
props.setProperty("mail.store.protocol", "imaps"); | |
Session session = Session.getDefaultInstance(props, null); | |
store = session.getStore("imaps"); | |
store.connect("imap.gmail.com", username, password); | |
} | |
private void printFolderContents() throws MessagingException, IOException { | |
Folder folder = store.getFolder(folderName); | |
folder.open(Folder.READ_ONLY); | |
Message[] messages = folder.getMessages(); | |
File file = new File(outputFile); | |
System.out.println(file.getPath()); | |
if (!file.exists()) { | |
file.createNewFile(); | |
} | |
PrintWriter pw = new PrintWriter(file); | |
for (int i = 0; i < messages.length && (i < limit || limit < 0); i++) { | |
Message message = messages[i]; | |
try { | |
String body = getMessageBody(message); | |
if (body == null) { | |
System.err.println("Null body with message: " + getMessageInfo(message)); | |
} else { | |
System.out.println("Printing " + message.getSubject()); | |
pw.println(getMessageInfo(message)); | |
pw.println(nl + nl); | |
pw.println("-----------------------------------------------------------------------------"); | |
pw.println(nl + nl); | |
} | |
} catch (IOException ex) { | |
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex); | |
} | |
} | |
folder.close(false); | |
pw.close(); | |
} | |
private String getMessageBody(Message message) throws MessagingException, IOException { | |
String type = message.getContentType(); | |
String body = null; | |
if (type.contains("TEXT/PLAIN")) { | |
return (String) message.getContent(); | |
} | |
if (type.contains("multipart")) { | |
MimeMultipart multipart = (MimeMultipart) message.getContent(); | |
for (int i = 0; i < multipart.getCount(); i++) { | |
BodyPart bodyPart = multipart.getBodyPart(i); | |
String contentType = bodyPart.getContentType(); | |
if (contentType.contains("TEXT/PLAIN")) { | |
return (String) bodyPart.getContent(); | |
} else if (contentType.contains("TEXT/HTML")) { | |
body = (String) bodyPart.getContent(); | |
} | |
} | |
} | |
return body; | |
} | |
private String getMessageInfo(Message message) throws MessagingException, IOException { | |
return "Subject: " + message.getSubject() + nl | |
+ "Date: " + message.getSentDate() + nl | |
+ "From: " + getAddressAsString(message.getFrom()) + nl | |
+ "To: " + getAddressAsString(message.getRecipients(Message.RecipientType.TO)) + nl | |
+ "Cc: " + getAddressAsString(message.getRecipients(Message.RecipientType.CC)) + nl | |
+ "Bcc: " + getAddressAsString(message.getRecipients(Message.RecipientType.BCC)) + nl | |
+ "Body:" + nl + nl | |
+ getMessageBody(message); | |
} | |
private String getAddressAsString(Address... addresses) { | |
if (addresses == null) { | |
return ""; | |
} | |
StringBuilder sb = new StringBuilder(); | |
for (int i = 0; i < addresses.length; i++) { | |
if (i > 0) { | |
sb.append(", "); | |
} | |
sb.append(addresses[i]); | |
} | |
return sb.toString(); | |
} | |
} |
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