解决:A component required a bean of type ‘javax.jms.Queue‘ that could not be found.

2022-04-13 15:47:34 浏览数 (1)

1. 情景描述:只是想简单写个 ActiveMQ 的小样,启动服务却报错:

代码语言:javascript复制
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-08-01 16:10:39.858 ERROR 4928 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

A component required a bean of type 'javax.jms.Queue' that could not be found.


Action:

Consider defining a bean of type 'javax.jms.Queue' in your configuration.

2. 原因和解决:

如提示信息中说的一样,Queue 类没有纳入spring 的管理。加上注解: @Bean 就行了。

错误写法:

代码语言:javascript复制
/**
 * @author silence
 * @date 2018/8/1 10:42
 */
@Component
public class MessageQueue{

    public Queue queue(){
        return new ActiveMQQueue("my-message");
    }

}

正确写法:

代码语言:javascript复制
package gentle.activemq;

import org.apache.activemq.command.ActiveMQQueue;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import javax.jms.Queue;

/**
 * @author silence
 * @date 2018/8/1 10:42
 */
@Component
public class MessageQueue{
    
    @Bean //返回一个名为 my-message 的队列,并且注册为 bean
    public Queue queue(){
        return new ActiveMQQueue("my-message");
    }

}

3. 成功启动服务:

0 人点赞