Java tutorial
// Copyright (c) 2007-Present Pivotal Software, Inc. All rights reserved. // // This software, the RabbitMQ Java client library, is triple-licensed under the // Mozilla Public License 1.1 ("MPL"), the GNU General Public License version 2 // ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see // LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2. For the ASL, // please see LICENSE-APACHE2. // // This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, // either express or implied. See the LICENSE file for specific language governing // rights and limitations of this software. // // If you have any questions regarding licensing, please contact us at // info@rabbitmq.com. package com.rabbitmq.client; import java.io.IOException; /** * Subclass of RpcServer which accepts UTF-8 string requests. */ public class StringRpcServer extends RpcServer { public StringRpcServer(Channel channel) throws IOException { super(channel); } public StringRpcServer(Channel channel, String queueName) throws IOException { super(channel, queueName); } public static final String STRING_ENCODING = "UTF-8"; /** * Overridden to do UTF-8 processing, and delegate to * handleStringCall. If UTF-8 is not understood by this JVM, falls * back to the platform default. */ @Override @SuppressWarnings("unused") public byte[] handleCall(byte[] requestBody, AMQP.BasicProperties replyProperties) { String request; try { request = new String(requestBody, STRING_ENCODING); } catch (IOException _e) { request = new String(requestBody); } String reply = handleStringCall(request, replyProperties); try { return reply.getBytes(STRING_ENCODING); } catch (IOException _e) { return reply.getBytes(); } } /** * Delegates to handleStringCall(String). */ public String handleStringCall(String request, AMQP.BasicProperties replyProperties) { return handleStringCall(request); } /** * Default implementation - override in subclasses. Returns the empty string. */ public String handleStringCall(String request) { return ""; } /** * Overridden to do UTF-8 processing, and delegate to * handleStringCast. If requestBody cannot be interpreted as UTF-8 * tries the platform default. */ @Override public void handleCast(byte[] requestBody) { try { handleStringCast(new String(requestBody, STRING_ENCODING)); } catch (IOException _e) { handleStringCast(new String(requestBody)); } } /** * Default implementation - override in subclasses. Does nothing. */ public void handleStringCast(String requestBody) { // Do nothing. } }