Apache ActiveMQ是Apache出品，是最流行的，能力很強的開源消息總線。默認情況下，程序連接ActiveMQ是不需要密碼的，為了安裝起見，需要設置密碼，提高安全性。本文分享如何設置訪問ActiveMQ的賬號密碼。

小編使用的ActiveMQ版本是apache-activemq-5.15.13。

一、設置控制臺管理密碼

ActiveMQ使用的是jetty服務器，找到 ActiveMQ安裝目錄下的confjetty.xml文件：

<bean class='org.eclipse.jetty.util.security.Constraint'> <property name='name' value='BASIC' /> <property name='roles' value='admin' /> <!-- set authenticate=false to disable login --> <property name='authenticate' value='true' /></bean>

注意：authenticate的屬性默認為'true'，登錄管理界面時需要輸入賬戶和密碼；如果是“false”，需要改為'true'。

修改管理界面登錄時的用戶名和密碼，在conf/jetty-realm.properties文件中添加用戶

## ---------------------------------------------------------------------------## 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.## ---------------------------------------------------------------------------# Defines users that can access the web (console, demo, etc.)# username: password [,rolename ...]# admin: admin, admin# user: user, userwiener: wiener1237, admin

配置信息按順序解釋，分別是：用戶名、密碼、角色名

二、消息生產者和消費者密碼認證

在confactivemq.xml中broker 標簽最后添加生產者和消費者密碼認證信息：

<!-- destroy the spring context on shutdown to stop jetty --> <shutdownHooks> <bean xmlns='http://www.springframework.org/schema/beans' /> </shutdownHooks> <!-- add plugins --> <plugins> <simpleAuthenticationPlugin><users> <authenticationUser username='${activemq.username}' password='${activemq.password}' groups='users,admins'/></users> </simpleAuthenticationPlugin> </plugins> </broker>

activemq.username和activemq.password的值在文件credentials.properties中配置，見如下步驟。

設置用戶名密碼，文件在confcredentials.properties

## ---------------------------------------------------------------------------## 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.## ---------------------------------------------------------------------------# Defines credentials that will be used by components (like web console) to access the broker# activemq.username=system# activemq.password=manager# guest.password=passwordactivemq.username=wieneractivemq.password=wiener1237guest.password=password

三、Java端配置用戶名密碼

驗證代碼是在《【Spring Boot】ActiveMQ 發布/訂閱消息模式介紹》的基礎上做重構，除了新增類ActiveMQConfig之外，修改部分均用紅色字體標注。配置application.properties連接信息：

## URL of the ActiveMQ broker. Auto-generated by default. For instance `tcp://localhost:61616`# failover:(tcp://localhost:61616,tcp://localhost:61617)# tcp://localhost:61616spring.activemq.broker-url=tcp://localhost:61616spring.activemq.in-memory=truespring.activemq.pool.enabled=false#默認值false，表示point to point（點到點）模式，true時代表發布訂閱模式，需要手動開啟spring.jms.pub-sub-domain=truespring.activemq.user=wienerspring.activemq.password=wiener1237

在項目中配置 ActiveMQ連接屬性，新增ActiveMQConfig類：

import org.apache.activemq.ActiveMQConnectionFactory;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.jms.config.DefaultJmsListenerContainerFactory;import org.springframework.jms.config.JmsListenerContainerFactory;/*** 配置 ActiveMQ** @author east7* @date 2020/6/23 11:27*/@Configurationpublic class ActiveMQConfig { @Value('${spring.activemq.user}') private String usrName; @Value('${spring.activemq.password}') private String password; @Value('${spring.activemq.broker-url}') private String brokerUrl; @Bean public ActiveMQConnectionFactory connectionFactory() { System.out.println('password =========== ' + password); return new ActiveMQConnectionFactory(usrName, password, brokerUrl); } /** * 設置點對點模式，和下面的發布訂閱模式二選一即可 * @param connectionFactory * @return */ @Bean public JmsListenerContainerFactory<?> jmsListenerContainerQueue(ActiveMQConnectionFactory connectionFactory){ DefaultJmsListenerContainerFactory bean = new DefaultJmsListenerContainerFactory(); bean.setConnectionFactory(connectionFactory); return bean; } @Bean public JmsListenerContainerFactory<?> jmsListenerContainerTopic(ActiveMQConnectionFactory connectionFactory){ //設置為發布訂閱模式, 默認情況下使用生產消費者方式 DefaultJmsListenerContainerFactory bean = new DefaultJmsListenerContainerFactory(); bean.setPubSubDomain(true); bean.setConnectionFactory(connectionFactory); return bean; }}

bean.setPubSubDomain(true)配置會覆蓋properties文件中spring.jms.pub-sub-domain的屬性值，故可以在properties不設置spring.jms.pub-sub-domain屬性。另外，這種配置方式可以在系統中同時使用點對點和發布/訂閱兩種消息模式。修改訂閱者：

import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.jms.annotation.JmsListener;import org.springframework.stereotype.Component;import javax.jms.JMSException;/*** 消費者*/@Componentpublic class Subscriber1 { private static Logger logger = LoggerFactory.getLogger(Subscriber1.class); /** * 訂閱 topicListener1，僅僅加入containerFactory即可 * * @param text * @throws JMSException */ @JmsListener(destination = 'topicListener1', containerFactory = 'jmsListenerContainerTopic') public void subscriber(String text) { logger.info('Subscriber1 收到的報文：{}', text); }}

containerFactory 的值 'jmsListenerContainerTopic' 會自動匹配到ActiveMQConfig中的函數JmsListenerContainerFactory<?> jmsListenerContainerTopic(ActiveMQConnectionFactory connectionFactory)。 Subscriber2同樣修改即可，代碼省略。如果containerFactory 的值設置為jmsListenerContainerQueue，則開啟了點到點消息模式。

測試函數還可以使用topicTest()。下面提供一個新的測試途徑——在controller中測試。新增方法

@Autowiredprivate Publisher publisher;@GetMapping('/sendTopicMsg')public String sendTopicMsg(String msg) { // 指定消息發送的目的地及內容 Destination destination = new ActiveMQTopic('topicListener2'); for (int i = 0; i < 8; i++) { publisher.publish(destination, msg + i); } return msg + ' 發送完畢';}

執行結果省略。

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