/* * Copyright 2002-2018 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.codec; import java.util.Map; import org.springframework.core.ResolvableType; import org.springframework.core.io.buffer.DataBuffer; import org.springframework.core.io.buffer.DataBufferUtils; import org.springframework.lang.Nullable; import org.springframework.util.MimeType; import org.springframework.util.MimeTypeUtils; /** * Decoder for {@code byte} arrays. * * @author Arjen Poutsma * @author Rossen Stoyanchev * @since 5.0 */ public class ByteArrayDecoder extends AbstractDataBufferDecoder<byte[]> { public ByteArrayDecoder() { super(MimeTypeUtils.ALL); } @Override public boolean canDecode(ResolvableType elementType, @Nullable MimeType mimeType) { return (elementType.resolve() == byte[].class && super.canDecode(elementType, mimeType)); } @Override protected byte[] decodeDataBuffer(DataBuffer dataBuffer, ResolvableType elementType, @Nullable MimeType mimeType, @Nullable Map<String, Object> hints) { byte[] result = new byte[dataBuffer.readableByteCount()]; dataBuffer.read(result); DataBufferUtils.release(dataBuffer); if (logger.isDebugEnabled()) { logger.debug(Hints.getLogPrefix(hints) + "Read " + result.length + " bytes"); } return result; } }