spring boot RedisMQ——使用RedisTemplate实现生产者消费者模式
1.配置redis
在application.properties文件中加入redis的配置信息
#redis gmall.redis.host=172.16.19.259 gmall.redis.port=6379 gmall.redis.pass=Gworld2017 gmall.redis.database=7 gmall.redis.timeout=5000
配置spring-redis.xml文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task" xmlns:redis="http://www.springframework.org/schema/redis" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd http://www.springframework.org/schema/redis http://www.springframework.org/schema/redis/spring-redis-1.0.xsd" default-lazy-init="false"> <bean id="redisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" primary="true"> <property name="hostName" value="${gmall.redis.host}" /> <property name="port" value="${gmall.redis.port}" /> <property name="password" value="${gmall.redis.pass}" /> <property name="timeout" value="${gmall.redis.timeout}" /> <property name="database" value="${gmall.redis.database}" /> </bean> <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate" primary="true"> <property name="connectionFactory" ref="redisConnectionFactory" /> <property name="exposeConnection" value="true" /> <property name="keySerializer"> <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> </property> <property name="valueSerializer"> <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" /> </property> <property name="hashKeySerializer"> <bean class="org.springframework.data.redis.serializer.StringRedisSerializer" /> </property> <property name="hashValueSerializer"> <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer" /> </property> </bean> </beans>
2、编写RedisUtil类
public class RedisUtil { private static Logger logger = LoggerFactory.getLogger(RedisUtil.class); @SuppressWarnings("rawtypes") private static RedisTemplate getRedisTemplate() { return (RedisTemplate) SpringBeanFactoryUtils.getBean("redisTemplate"); } @SuppressWarnings("unchecked") public static Long addRedisSet(String redisKey, Object value) { Long result = getRedisTemplate().opsForSet().add(redisKey, value); if (logger.isDebugEnabled()) { logger.debug("result=" + result); } return result; } @SuppressWarnings("unchecked") public static void leftPush(String key, String value) { getRedisTemplate().opsForList().leftPush(key, value); //getRedisTemplate().opsForList().leftPop(key); } @SuppressWarnings("unchecked") public static String rightPop(String key,long timeout,TimeUnit unit) { Object obj = getRedisTemplate().opsForList().rightPop(key, timeout, unit); String str = (String) obj; return str; } @SuppressWarnings("unchecked") public static Object rightPopAndLeftPush(String sourceKey, String destinationKey) { Object value = getRedisTemplate().opsForList().rightPopAndLeftPush(sourceKey, destinationKey); return value; } }
SpringBeanFactoryUtils类
package com.gcard.queue.utils; import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; public class SpringBeanFactoryUtils implements ApplicationContextAware { private static ApplicationContext appCtx; /** * 此方法可以把ApplicationContext对象inject到当前类中作为一个静态成员变量。 * @param applicationContext ApplicationContext 对象. * @throws BeansException * @author wangdf */ public void setApplicationContext( ApplicationContext applicationContext ) throws BeansException { appCtx = applicationContext; } /** * 获取ApplicationContext * @return * @author wangdf */ public static ApplicationContext getApplicationContext(){ return appCtx; } /** * 这是一个便利的方法，帮助我们快速得到一个BEAN * @param beanName bean的名字 * @return 返回一个bean对象 * @author wangdf */ public static Object getBean( String beanName ) { return appCtx.getBean( beanName ); } @SuppressWarnings("unchecked") public static Object getBean( Class requiredType ) { return appCtx.getBean(requiredType); } }
3、模拟生产者
public class TaskProducer implements Runnable { Logger logger = LoggerFactory.getLogger(getClass()); @Override public void run() { try { for(int i=0;i<5;i++){ RedisUtil.leftPush("task-queue", "value_" + i); logger.info("插入一个新的任务：" + "value_" + i); } } catch (Exception e) { logger.error(e.getMessage(), e); } } }
4、模拟消费者
public class TaskConsumer implements Runnable { Logger logger = LoggerFactory.getLogger(getClass()); @Override public void run() { while (true) { try { String taskid = (String) RedisUtil.rightPopAndLeftPush("task-queue", "tmp-queue");//取出消息放到临时队列 // Thread.sleep(1000); // RedisUtil.rightPop("tmp-queue");//非阻塞 // 阻塞式brpop，List中无数据时阻塞，参数0表示一直阻塞下去，直到List出现数据 String str = RedisUtil.rightPop("tmp-queue", 0, TimeUnit.MINUTES);//阻塞，取出临时队列 logger.info("线程取数据：{}", str); logger.info(str + "处理成功，被清除"); } catch (Exception e) { logger.error(e.getMessage(), e); } } /* * if(random.nextInt(13) % 7 == 0){ * RedisUtil.rightPopAndLeftPush("tmp-queue","task-queue");//弹回任务队列 * logger.info(taskid+"处理失败，被弹回任务队列"); }else{ * RedisUtil.rightPop("tmp-queue"); logger.info(taskid+"处理成功，被清除"); } */ } }
5、独立消费者作为一个项目（监听器）
在application-context.xml文件配置bean，启动项目后就会执行这个监听器
<bean class="com.gcard.longcode.manager.impl.MessageQueueServiceImpl" init-method="messageListener"/>
