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Spring Framework example source code file (ByteArrayResource.java)
The Spring Framework ByteArrayResource.java source code/* * Copyright 2002-2007 the original author or authors. * * Licensed 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.springframework.core.io; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.util.Arrays; /** * {@link Resource} implementation for a given byte array. * Creates a ByteArrayInputStreams for the given byte array. * * <p>Useful for loading content from any given byte array, * without having to resort to a single-use {@link InputStreamResource}. * Particularly useful for creating mail attachments from local content, * where JavaMail needs to be able to read the stream multiple times. * * @author Juergen Hoeller * @since 1.2.3 * @see java.io.ByteArrayInputStream * @see InputStreamResource * @see org.springframework.mail.javamail.MimeMessageHelper#addAttachment(String, InputStreamSource) */ public class ByteArrayResource extends AbstractResource { private final byte[] byteArray; private final String description; /** * Create a new ByteArrayResource. * @param byteArray the byte array to wrap */ public ByteArrayResource(byte[] byteArray) { this(byteArray, "resource loaded from byte array"); } /** * Create a new ByteArrayResource. * @param byteArray the byte array to wrap * @param description where the byte array comes from */ public ByteArrayResource(byte[] byteArray, String description) { if (byteArray == null) { throw new IllegalArgumentException("Byte array must not be null"); } this.byteArray = byteArray; this.description = (description != null ? description : ""); } /** * Return the underlying byte array. */ public final byte[] getByteArray() { return this.byteArray; } /** * This implementation always returns <code>true. */ public boolean exists() { return true; } /** * This implementation returns a ByteArrayInputStream for the * underlying byte array. * @see java.io.ByteArrayInputStream */ public InputStream getInputStream() throws IOException { return new ByteArrayInputStream(this.byteArray); } /** * This implementation returns the passed-in description, if any. */ public String getDescription() { return this.description; } /** * This implementation compares the underlying byte array. * @see java.util.Arrays#equals(byte[], byte[]) */ public boolean equals(Object obj) { return (obj == this || (obj instanceof ByteArrayResource && Arrays.equals(((ByteArrayResource) obj).byteArray, this.byteArray))); } /** * This implementation returns the hash code based on the * underlying byte array. */ public int hashCode() { return (byte[].class.hashCode() * 29 * this.byteArray.length); } } Other Spring Framework examples (source code examples)Here is a short list of links related to this Spring Framework ByteArrayResource.java source code file: |
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