org.apache.poi.hsmf.examples.Msg2txt Maven / Gradle / Ivy
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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
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limitations under the License.
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package org.apache.poi.hsmf.examples;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import org.apache.poi.hsmf.MAPIMessage;
import org.apache.poi.hsmf.datatypes.AttachmentChunks;
import org.apache.poi.hsmf.exceptions.ChunkNotFoundException;
/**
* Reads one or several Outlook MSG files and for each of them creates
* a text file from available chunks and a directory that contains
* attachments.
*
* @author Bruno Girin
*/
public class Msg2txt {
/**
* The stem used to create file names for the text file and the directory
* that contains the attachments.
*/
private String fileNameStem;
/**
* The Outlook MSG file being processed.
*/
private MAPIMessage msg;
public Msg2txt(String fileName) throws IOException {
fileNameStem = fileName;
if(fileNameStem.endsWith(".msg") || fileNameStem.endsWith(".MSG")) {
fileNameStem = fileNameStem.substring(0, fileNameStem.length() - 4);
}
msg = new MAPIMessage(fileName);
}
/**
* Processes the message.
*
* @throws IOException if an exception occurs while writing the message out
*/
public void processMessage() throws IOException {
String txtFileName = fileNameStem + ".txt";
String attDirName = fileNameStem + "-att";
PrintWriter txtOut = null;
try {
txtOut = new PrintWriter(txtFileName);
try {
String displayFrom = msg.getDisplayFrom();
txtOut.println("From: "+displayFrom);
} catch (ChunkNotFoundException e) {
// ignore
}
try {
String displayTo = msg.getDisplayTo();
txtOut.println("To: "+displayTo);
} catch (ChunkNotFoundException e) {
// ignore
}
try {
String displayCC = msg.getDisplayCC();
txtOut.println("CC: "+displayCC);
} catch (ChunkNotFoundException e) {
// ignore
}
try {
String displayBCC = msg.getDisplayBCC();
txtOut.println("BCC: "+displayBCC);
} catch (ChunkNotFoundException e) {
// ignore
}
try {
String subject = msg.getSubject();
txtOut.println("Subject: "+subject);
} catch (ChunkNotFoundException e) {
// ignore
}
try {
String body = msg.getTextBody();
txtOut.println(body);
} catch (ChunkNotFoundException e) {
System.err.println("No message body");
}
AttachmentChunks[] attachments = msg.getAttachmentFiles();
if(attachments.length > 0) {
File d = new File(attDirName);
if(d.mkdir()) {
for(AttachmentChunks attachment : attachments) {
processAttachment(attachment, d);
}
} else {
System.err.println("Can't create directory "+attDirName);
}
}
} finally {
if(txtOut != null) {
txtOut.close();
}
}
}
/**
* Processes a single attachment: reads it from the Outlook MSG file and
* writes it to disk as an individual file.
*
* @param attachment the chunk group describing the attachment
* @param dir the directory in which to write the attachment file
* @throws IOException when any of the file operations fails
*/
public void processAttachment(AttachmentChunks attachment,
File dir) throws IOException {
String fileName = attachment.getAttachFileName().toString();
if(attachment.getAttachLongFileName() != null) {
fileName = attachment.getAttachLongFileName().toString();
}
File f = new File(dir, fileName);
OutputStream fileOut = null;
try {
fileOut = new FileOutputStream(f);
fileOut.write(attachment.getAttachData().getValue());
} finally {
if(fileOut != null) {
fileOut.close();
}
}
}
/**
* Processes the list of arguments as a list of names of Outlook MSG files.
*
* @param args the list of MSG files to process
*/
public static void main(String[] args) {
if(args.length <= 0) {
System.err.println("No files names provided");
} else {
for(int i = 0; i < args.length; i++) {
try {
Msg2txt processor = new Msg2txt(args[i]);
processor.processMessage();
} catch (IOException e) {
System.err.println("Could not process "+args[i]+": "+e);
}
}
}
}
}