lista, compacta e envia arquivos via e-mail

lista_arquivos_e_compacta_e_envia_por_email.java

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class JavaMailApp {
	public static void main(String[] args) throws IOException {
		Properties props = new Properties();
		/** Parâmetros de conexão com servidor Gmail */
		props.put("mail.smtp.host", "smtp.office365.com");
		props.put("mail.smtp.starttls.enable", "true");
		props.put("mail.smtp.auth", "true");
		props.put("mail.smtp.port", "587");

		Session session = Session.getDefaultInstance(props, new javax.mail.Authenticator() {
			protected PasswordAuthentication getPasswordAuthentication() {
				return new PasswordAuthentication("seu endereco de email", "sua senha");
			}
		});

		/** Ativa Debug para sessão */
		session.setDebug(true);

		try {

			Message message = new MimeMessage(session);
			// Remetente
			message.setFrom(new InternetAddress("seu endereco de email"));

			// Destinatário(s)
			Address[] toUser = InternetAddress.parse("[email protected], [email protected]");

			message.setRecipients(Message.RecipientType.TO, toUser);
			message.setSubject("Teste de java-email");// Assunto

			String[] array = listaArquivos("/home/anderson/Imagens/imagens_teste/");
			
		      try {
		           compactarParaZip("/home/anderson/Imagens/imagens.zip", array);
		       } catch (IOException e) {
		           // TODO Auto-generated catch block
		           e.printStackTrace();
		       }
			
			message.setContent(setAttachment(message, "imagens", ".zip", "/home/anderson/Imagens/imagens.zip", 1));

			/** Método para enviar a mensagem criada */
			Transport.send(message);

			System.out.println("Feito!!!");

		} catch (MessagingException e) {
			throw new RuntimeException(e);
		}
	}

	public static Multipart setAttachment(Message message, String filename, String extensao, String path, int number)
			throws MessagingException {

		Multipart multipart = new MimeMultipart();
		BodyPart messageBodyPart = new MimeBodyPart();

		for (int i = 0; i < number; i++) {
			String nome = filename + i + extensao;
			DataSource source = new FileDataSource(path);
			messageBodyPart.setDataHandler(new DataHandler(source));
			messageBodyPart.setFileName(nome);
			multipart.addBodyPart(messageBodyPart, i);
		}

		return multipart;
	}

   //Constantes
	static final int TAMANHO_BUFFER = 4096; // 4kb

	// método para compactar arquivo
	public static void compactarParaZip(String arqSaida, String ...arqEntradas) throws IOException {
		int cont;
		byte[] dados = new byte[TAMANHO_BUFFER];

		BufferedInputStream origem = null;
		FileInputStream streamDeEntrada = null;
		FileOutputStream destino = null;
		ZipOutputStream saida = null;
		ZipEntry entry = null;

		try {
			destino = new FileOutputStream(new File(arqSaida));
			saida = new ZipOutputStream(new BufferedOutputStream(destino));
			for(final String arqEntrada : arqEntradas) {
				File file = new File(arqEntrada);
				streamDeEntrada = new FileInputStream(file);
				origem = new BufferedInputStream(streamDeEntrada, TAMANHO_BUFFER);
				entry = new ZipEntry(file.getName());
				saida.putNextEntry(entry);
				
				while ((cont = origem.read(dados, 0, TAMANHO_BUFFER)) != -1) {
					saida.write(dados, 0, cont);
				}
				origem.close();
			}

			saida.close();
		} catch (IOException e) {
			throw new IOException(e.getMessage());
		}
	}
	
	public static String[] listaArquivos(String diretorio) throws IOException {

		File file = new File(diretorio);
		File afile[] = file.listFiles();
		String[] lista = new String[afile.length];
		int i = 0;
		for (int j = afile.length; i < j; i++) {
			File arquivos = afile[i];
			System.out.println(arquivos.getName());
			lista[i] = diretorio+arquivos.getName();
		}
		return lista;

	}
	
}