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Commons-Email aims to provide a API for sending email. It is built on top of the JavaMail API, which it aims to simplify.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * 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
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.mail;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;

import javax.activation.DataSource;

/**
 * This class implements a typed DataSource from:
* * - an InputStream
* - a byte array
* - a String
* * @since 1.0 * @author Colin Chalmers * @author Jon S. Stevens * @author Brett McLaughlin * @version $Id: ByteArrayDataSource.java 480401 2006-11-29 04:40:04Z bayard $ */ public class ByteArrayDataSource implements DataSource { /** define the buffer size */ public static final int BUFFER_SIZE = 512; /** Stream containg the Data */ private ByteArrayOutputStream baos; /** Content-type. */ private String type = "application/octet-stream"; /** * Create a datasource from a byte array. * * @param data A byte[]. * @param aType A String. * @throws IOException IOException * @since 1.0 */ public ByteArrayDataSource(byte[] data, String aType) throws IOException { ByteArrayInputStream bis = null; try { bis = new ByteArrayInputStream(data); this.byteArrayDataSource(bis, aType); } catch (IOException ioex) { throw ioex; } finally { if (bis != null) { bis.close(); } } } /** * Create a datasource from an input stream. * * @param aIs An InputStream. * @param aType A String. * @throws IOException IOException * @since 1.0 */ public ByteArrayDataSource(InputStream aIs, String aType) throws IOException { this.byteArrayDataSource(aIs, aType); } /** * Create a datasource from a String. * * @param data A String. * @param aType A String. * @throws IOException IOException * @since 1.0 */ public ByteArrayDataSource(String data, String aType) throws IOException { this.type = aType; try { baos = new ByteArrayOutputStream(); // Assumption that the string contains only ASCII // characters! Else just pass in a charset into this // constructor and use it in getBytes(). baos.write(data.getBytes("iso-8859-1")); baos.flush(); baos.close(); } catch (UnsupportedEncodingException uex) { throw new IOException("The Character Encoding is not supported."); } finally { if (baos != null) { baos.close(); } } } /** * Create a datasource from an input stream. * * @param aIs An InputStream. * @param aType A String. * @throws IOException IOException */ private void byteArrayDataSource(InputStream aIs, String aType) throws IOException { this.type = aType; BufferedInputStream bis = null; BufferedOutputStream osWriter = null; try { int length = 0; byte[] buffer = new byte[ByteArrayDataSource.BUFFER_SIZE]; bis = new BufferedInputStream(aIs); baos = new ByteArrayOutputStream(); osWriter = new BufferedOutputStream(baos); //Write the InputData to OutputStream while ((length = bis.read(buffer)) != -1) { osWriter.write(buffer, 0, length); } osWriter.flush(); osWriter.close(); } catch (IOException ioex) { throw ioex; } finally { if (bis != null) { bis.close(); } if (baos != null) { baos.close(); } if (osWriter != null) { osWriter.close(); } } } /** * Get the content type. * * @return A String. * @since 1.0 */ public String getContentType() { return type == null ? "application/octet-stream" : type; } /** * Get the input stream. * * @return An InputStream. * @throws IOException IOException * @since 1.0 */ public InputStream getInputStream() throws IOException { if (baos == null) { throw new IOException("no data"); } return new ByteArrayInputStream(baos.toByteArray()); } /** * Get the name. * * @return A String. * @since 1.0 */ public String getName() { return "ByteArrayDataSource"; } /** * Get the OutputStream to write to * * @return An OutputStream * @since 1.0 */ public OutputStream getOutputStream() { baos = new ByteArrayOutputStream(); return baos; } }




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