Java tutorial
/* * ==================================================================== * 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.http.nio.entity; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.nio.ByteBuffer; import org.apache.http.entity.AbstractHttpEntity; import org.apache.http.nio.ContentEncoder; import org.apache.http.nio.IOControl; import org.apache.http.nio.protocol.AsyncNHttpServiceHandler; /** * A simple self contained, repeatable non-blocking entity that retrieves * its content from a byte array. * * @see AsyncNHttpServiceHandler * @since 4.0 */ public class NByteArrayEntity extends AbstractHttpEntity implements ProducingNHttpEntity { protected final byte[] content; protected final ByteBuffer buffer; public NByteArrayEntity(final byte[] b) { this.content = b; this.buffer = ByteBuffer.wrap(b); } public void finish() { buffer.rewind(); } public void produceContent(ContentEncoder encoder, IOControl ioctrl) throws IOException { encoder.write(buffer); if (!buffer.hasRemaining()) encoder.complete(); } public long getContentLength() { return buffer.limit(); } public boolean isRepeatable() { return true; } public boolean isStreaming() { return false; } public InputStream getContent() { return new ByteArrayInputStream(content); } public void writeTo(final OutputStream outstream) throws IOException { if (outstream == null) { throw new IllegalArgumentException("Output stream may not be null"); } outstream.write(content); outstream.flush(); } }