（六）springboot整合activemq

　　1、现下载activemq，下载链接：http://activemq.apache.org/download.html，windows系统解压后进入bin目录，分32位、64位操作系统，运行activemq.bat启动程序，访问http://http://127.0.0.1:8161

点击queue按钮，可以创建消息队列。

　　2、pom文件中增加以下依赖，在application.properties对activema进行配置

        <dependency>             <groupId>org.springframework.boot</groupId>             <artifactId>spring-boot-starter-activemq</artifactId>         </dependency>         <dependency>             <groupId>org.apache.activemq</groupId>             <artifactId>activemq-pool</artifactId>         </dependency>

#访问地址 spring.activemq.broker-url=tcp://127.0.0.1:61616 spring.activemq.user=admin spring.activemq.password=admin #是否开启线程池 spring.activemq.pool.enabled=true #最大连接数 spring.activemq.pool.max-connections=50

　　3、在Application.class中添加如下代码，方便注入队列

package com.zc.app.test;  import javax.jms.Queue;  import org.apache.activemq.command.ActiveMQQueue; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean;  @SpringBootApplication public class TestApplication {     @Bean     public Queue queue(){         return new ActiveMQQueue("test.queue");     }     public static void main(String[] args) {         SpringApplication.run(TestApplication.class, args);     }  }

TestApplication

　　 4、新建一个service接口用来发送消息，并实现发送消息

/**  *   */ package com.zc.app.test.service;  import javax.jms.Destination;   public interface MsgService {      public void sendMessage(Destination destination,String message);          public void sendMessage(String message); }

MsgService

/**  *   */ package com.zc.app.test.service.impl;    import javax.jms.Destination; import javax.jms.Queue;  import org.springframework.beans.factory.annotation.Autowired; import org.springframework.jms.core.JmsMessagingTemplate; import org.springframework.stereotype.Service;  import com.zc.app.test.service.MsgService;    @Service public class MsgServiceImpl implements MsgService{           @Autowired     private Queue queue;          @Autowired     private JmsMessagingTemplate jms; //用来发送消息      @Override     public void sendMessage(Destination destination,String message) {         jms.convertAndSend(this.queue, message);              }      @Override     public void sendMessage(String message) {         jms.convertAndSend(message);              }        }

MsgServiceImpl

5、写controller来调用接口

/**  *   */ package com.zc.app.test.controller;  import javax.jms.Destination;  import org.apache.activemq.command.ActiveMQQueue; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;  import com.zc.app.test.service.MsgService;   @RestController @RequestMapping("/msg") public class SendController {      @Autowired     private MsgService msgService;          @GetMapping("send")     public String order(String message) {                  Destination destination = new ActiveMQQueue("test.queue");         msgService.sendMessage(destination, message);         return "send message success";     } }

SendController

　　　6、启动程序，这时程序出现错误，提示JmsMessagingTemplate注入失败

Field jms in com.zc.app.test.service.impl.MsgServiceImpl required a bean of type 'org.springframework.jms.core.JmsMessagingTemplate' that could not be found.

　　　7、通过测试，将acticemq线程池配置删除后，程序可以正常启动，最后找到原因是因为少了jms的pool依赖包，在pom文件添加以下依赖后可以正常启动

        <dependency>             <groupId>org.messaginghub</groupId>             <artifactId>pooled-jms</artifactId>         </dependency>

文章来源: springboot 学习笔记（六）

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activemq