JAVA高级面试进阶训练营视频教程

admin

1：在《ActiveMQ 基于zookeeper的主从（levelDB Master/Slave）搭建以及Spring-boot下使用》（http://www.cnblogs.com/yshyee/p/7277801.html）中，采用以下代码进行JMS消息发送：

@Service
public class Producer {

    @Autowired
    private JmsMessagingTemplate jmsTemplate;

    public void sendMessage(Destination destination, final String message){
        jmsTemplate.convertAndSend(destination, message);
    }
}

经使用JMeter进行压力测试，发现JMS的发送消息特别慢。

2：下面通过自定义CachingConnectionFactory解决。

（1）SenderConfig.java

package com.example.springbootactivemq.jms;

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.connection.CachingConnectionFactory;
import org.springframework.jms.core.JmsTemplate;

/**
 * Created by yan on 2017/8/3.
 */
@Configuration
public class SenderConfig {

    @Value("${spring.activemq.broker-url}")
    private String brokerUrl;

    @Bean
    public ActiveMQConnectionFactory activeMQConnectionFactory() {
        ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory();
        activeMQConnectionFactory.setBrokerURL(brokerUrl);

        return activeMQConnectionFactory;
    }

    @Bean
    public CachingConnectionFactory cachingConnectionFactory() {
        return new CachingConnectionFactory(activeMQConnectionFactory());
    }

    @Bean
    public JmsTemplate jmsTemplate() {
        return new JmsTemplate(cachingConnectionFactory());
    }

    @Bean
    public Sender sender() {
        return new Sender();
    }
}

（2）Sender.java

package com.example.springbootactivemq.jms;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jms.core.JmsTemplate;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.Session;
import javax.jms.TextMessage;

/**
 * Created by yan on 2017/8/3.
 */
public class Sender {

    @Autowired
    private JmsTemplate jmsTemplate;

    public void send(final String destination, final String message){
        this.jmsTemplate.convertAndSend(destination, message);
    }
}

（3）Receiver.java

package com.example.springbootactivemq.jms;

import org.springframework.jms.annotation.JmsListener;
import org.springframework.jms.listener.SessionAwareMessageListener;
import org.springframework.jms.support.JmsUtils;

import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

/**
 * Created by yan on 2017/8/3.
 */
public class Receiver implements SessionAwareMessageListener<TextMessage> {

    @JmsListener(destination = "${queue.destination}")
    public void receive(String message) {
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }
}

（4）ReceiverConfig.java

package com.example.springbootactivemq.jms;

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.annotation.EnableJms;
import org.springframework.jms.config.DefaultJmsListenerContainerFactory;

/**
 * Created by yan on 2017/8/3.
 */
@Configuration
@EnableJms
public class ReceiverConfig {
    @Value("${spring.activemq.broker-url}")
    private String brokerUrl;

    @Bean
    public ActiveMQConnectionFactory activeMQConnectionFactory() {
        ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory();
        activeMQConnectionFactory.setBrokerURL(brokerUrl);

        return activeMQConnectionFactory;
    }

    @Bean
    public DefaultJmsListenerContainerFactory jmsListenerContainerFactory() {
        DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory();
        factory.setConnectionFactory(activeMQConnectionFactory());
        factory.setConcurrency("3-10");

        return factory;
    }

    @Bean
    public Receiver receiver() {
        return new Receiver();
    }
}

 

（5）TestCtrl.java

package com.example.springbootactivemq.test;

import com.example.springbootactivemq.jms.Sender;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by yan on 2017/8/2.
 */
@RestController
@RequestMapping(
        value = "/test",
        headers = "Accept=application/json",
        produces = "application/json;charset=utf-8"
)
public class TestCtrl {
    @Autowired
    private Sender sender;

    @Value("${queue.destination}")
    private String destination;

    @RequestMapping(
            value = "/say/{msg}/to/{name}",
            method = RequestMethod.GET
    )
    public Map<String, Object> say(@PathVariable String msg, @PathVariable String name){
        Map<String, Object> map = new HashMap<>();
        map.put("msg", msg);
        map.put("name", name);

        sender.send(destination, msg);

        return map;
    }
}

（6）application.properties

spring.activemq.broker-url=failover:(tcp://192.168.3.10:61616,tcp://192.168.3.11:61616,tcp://192.168.3.12:61616)
spring.activemq.in-memory=true
spring.activemq.pool.enabled=false
spring.activemq.user=admin
spring.activemq.password=admin

queue.destination=test.queue
queue.concurrency=3-10