SpringBoot+ActiveMQ启动报错:＇JmsAutoConfiguration did not match＇问题分析

我会带着你远行 2022-04-16 04:24 311阅读 0赞

SpringBoot整合ActiveMQ，一切准备工作就绪之后，启动报错如下：

java.lang.Object.wait(Native Method)
     java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
     com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:40)
    2018-11-16 18:04:36.040  INFO 4088 --- [           main] ConditionEvaluationReportLoggingListener : 
    
    Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
    2018-11-16 18:04:36.155 ERROR 4088 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 
    
    ***************************
    APPLICATION FAILED TO START
    ***************************
    
    Description:
    
    Field jmsMessagingTemplate in com.haozz.demo.mq.PromoteActProducer required a bean of type 'org.springframework.jms.core.JmsMessagingTemplate' that could not be found.
    
    The injection point has the following annotations:
    	- @org.springframework.beans.factory.annotation.Autowired(required=true)
    
    The following candidates were found but could not be injected:
    	- Bean method 'jmsMessagingTemplate' in 'JmsAutoConfiguration.MessagingTemplateConfiguration' not loaded because Ancestor org.springframework.boot.autoconfigure.jms.JmsAutoConfiguration did not match
    
    
    Action:
    
    Consider revisiting the entries above or defining a bean of type 'org.springframework.jms.core.JmsMessagingTemplate' in your configuration.
    
    Disconnected from the target VM, address: '127.0.0.1:62933', transport: 'socket'
    
    Process finished with exit code 1

提示JmsMessagingTemplate无法注入，这里说明一下，我的生产者中注入了JmsMessagingTemplate，代码如下：

package com.haozz.demo.mq;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.jms.core.JmsMessagingTemplate;
    import org.springframework.scheduling.annotation.EnableScheduling;
    import org.springframework.scheduling.annotation.Scheduled;
    import org.springframework.stereotype.Component;
    
    import javax.jms.Queue;
    import java.util.Date;
    
    /**
     * <p>Coding</p>
     *
     * @author haozz
     * @version $Id: DemoClass.java, v 0.1 2018/11/15 19:26 haozz Exp $
     */
    @Component
    @EnableScheduling
    public class PromoteActProducer {
    
        @Autowired
        private JmsMessagingTemplate jmsMessagingTemplate;
    
        @Autowired
        private Queue queue;
    
        @Scheduled(fixedDelay = 2000)  //每2s执行一次
        public void send() {
            String date = new Date().toString();
            this.jmsMessagingTemplate.convertAndSend(this.queue, date + " : hello ActiveMQ , this is producer ; ");
        }
    }

网上找了一下，所有的文章的都说是application.properties配置中关于ActiveMQ的配置后面多出了空格，可是我的配置后面明明没有空格，贴出来大家看一下：

server.port=8080
    spring.activemq.broker-url=tcp://127.0.0.1:61616
    spring.activemq.in-memory=false
    spring.activemq.pool.enabled=true

这里吐槽一下，就这个问题百度一下，出来的帖子全都说配置后面有空格，来自各个平台不下二十篇，更离谱的是这些帖子的内容一模一样，标点符号都不差，而且每一篇都声明自己是原创。

最后，在茫茫的帖子中发现了这一篇，算是解决了问题:[https://www.aliyun.com/jiaocheng/779295.html][https_www.aliyun.com_jiaocheng_779295.html]，感谢。这篇文章中给出的办法是不再使用Autowired注入，而是使用ConnectionFactory生成JmsTemplate，然后再生成JmsMessagingTemplate。当然，这样也可以解决一时无法启动的问题，最起码比盲目跟风说配置有空格的好。果然这样写也是可以启动成功的，代码如下：

package com.haozz.demo.mq;
    
    import org.apache.activemq.ActiveMQConnectionFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.jms.core.JmsMessagingTemplate;
    import org.springframework.jms.core.JmsTemplate;
    import org.springframework.scheduling.annotation.EnableScheduling;
    import org.springframework.scheduling.annotation.Scheduled;
    import org.springframework.stereotype.Component;
    
    import javax.jms.ConnectionFactory;
    import javax.jms.Queue;
    import java.util.Date;
    
    /**
     * <p>Coding</p>
     *
     * @author haozz
     * @version $Id: DemoClass.java, v 0.1 2018/11/15 19:26 haozz Exp $
     */
    @Component
    @EnableScheduling
    public class PromoteActProducer {
    
    //    @Autowired
    //    private JmsMessagingTemplate jmsMessagingTemplate;
    
        @Autowired
        private Queue queue;
    
        @Bean
        ConnectionFactory connectionFactory() {
            return new ActiveMQConnectionFactory();
        }
    
        @Bean
        JmsTemplate jmsTemplate(ConnectionFactory connectionFactory) {
            JmsTemplate jmsTemplate = new JmsTemplate(connectionFactory);
            jmsTemplate.setPriority(999);
            return jmsTemplate;
        }
    
        @Bean(value="jmsMessagingTemplate")
        JmsMessagingTemplate jmsMessagingTemplate(JmsTemplate jmsTemplate) {
            JmsMessagingTemplate messagingTemplate = new JmsMessagingTemplate(jmsTemplate);
            return messagingTemplate;
        }
    
        @Scheduled(fixedDelay = 2000)  //每2s执行一次
        public void send() {
            String date = new Date().toString();
            JmsMessagingTemplate jmsMessagingTemplate = jmsMessagingTemplate(jmsTemplate(connectionFactory()));
            jmsMessagingTemplate.convertAndSend(this.queue, date + " : hello ActiveMQ , this is producer ; ");
    
    //        this.jmsMessagingTemplate.convertAndSend(this.queue, date + " : hello ActiveMQ , this is producer ; ");
        }
    }

最终，在不断尝试之下，找出了一点曙光，其实原因还是在于配置文件。其中有一项pool.enabled，为true时表示使用连接池，但是pool.enabled=true时启动就会报JmsMessagingTemplate无法注入的错。将pool.enabled改为false，便可以启动成功，具体原因现在还不得而知，后面再做分析。

[https_www.aliyun.com_jiaocheng_779295.html]: https://www.aliyun.com/jiaocheng/779295.html