Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.mycompany.javateste.queues.topic; /** * * @author cadu */ import com.rabbitmq.client.ConnectionFactory; import com.rabbitmq.client.Connection; import com.rabbitmq.client.Channel; public class EmitLogTopic { private static final String EXCHANGE_NAME = "topic_logs"; public static void main(String[] argv) { Connection connection = null; Channel channel = null; try { ConnectionFactory factory = new ConnectionFactory(); factory.setHost("localhost"); connection = factory.newConnection(); channel = connection.createChannel(); channel.exchangeDeclare(EXCHANGE_NAME, "topic"); String routingKey = getRouting(argv); String message = getMessage(argv); channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes("UTF-8")); System.out.println(" [x] Sent '" + routingKey + "':'" + message + "'"); } catch (Exception e) { e.printStackTrace(); } finally { if (connection != null) { try { connection.close(); } catch (Exception ignore) { } } } } private static String getRouting(String[] strings) { if (strings.length < 1) return "anonymous.info"; return strings[0]; } private static String getMessage(String[] strings) { if (strings.length < 2) return "Hello World!"; return joinStrings(strings, " ", 1); } private static String joinStrings(String[] strings, String delimiter, int startIndex) { int length = strings.length; if (length == 0) return ""; if (length < startIndex) return ""; StringBuilder words = new StringBuilder(strings[startIndex]); for (int i = startIndex + 1; i < length; i++) { words.append(delimiter).append(strings[i]); } return words.toString(); } }