数据库 发布日期:2025/11/4 浏览次数:1
一.创建spring boot项目
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.41</version> </dependency>
二.编辑yml配置文件
server: port: 7888 # 日志配置 logging: config: classpath:log/logback.xml level: cn.com.dhcc: info org.springframework: info org.springframework.web: info com.alibaba.nacos.client.naming: error spring: redis: host: localhost port: 6379 password: ********* database: 1 jedis: pool: max-idle: 8 max-active: 8 max-wait: -1 min-idle: 0 timeout: 5000
三.配置Redis
@Configuration
public class RedisConfiguration {
 /**
  * 实例化 RedisTemplate 对象
  *
  * @return
  */
 @Bean("RedisTemplateS")
 public RedisTemplate<String, Object> functionDomainRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
  RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
  initDomainRedisTemplate(redisTemplate, redisConnectionFactory);
  return redisTemplate;
 }
 /**
  * 设置数据存入 redis 的序列化方式,并开启事务
  * 
  * @param redisTemplate
  * @param factory
  */
 private void initDomainRedisTemplate(@Qualifier("RedisTemplateS") RedisTemplate<String, Object> redisTemplate, RedisConnectionFactory factory) {
  // 如果不配置Serializer,那么存储的时候缺省使用String,如果用User类型存储,那么会提示错误User can't cast to
  // String!
  redisTemplate.setKeySerializer(new StringRedisSerializer());
  redisTemplate.setHashKeySerializer(new StringRedisSerializer());
  FastJsonRedisSerializer<Object> fastJsonRedisSerializer = new FastJsonRedisSerializer<Object>(Object.class);
  redisTemplate.setHashValueSerializer(fastJsonRedisSerializer);
  redisTemplate.setValueSerializer(fastJsonRedisSerializer);
  //redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
  //redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());
  // 开启事务
  redisTemplate.setEnableTransactionSupport(true);
  redisTemplate.setConnectionFactory(factory);
 }
 /**
  * 注入封装RedisTemplate @Title: redisUtil @return RedisUtil @date
  * 
  */
 @Bean(name = "redisUtils")
 public RedisUtils redisUtil(@Qualifier("RedisTemplateS") RedisTemplate<String, Object> redisTemplate) {
  RedisUtils redisUtil = new RedisUtils();
  redisUtil.setRedisTemplate(redisTemplate);
  return redisUtil;
 }
四.编写RedisUtil消息发布方法
public class RedisUtils {
 private static final Logger log = LoggerFactory.getLogger(RedisUtils.class);
 private RedisTemplate<String, Object> redisTemplate;
 public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
  this.redisTemplate = redisTemplate;
 }
 public void publish(String channal ,Object obj) {
  redisTemplate.convertAndSend(channal,obj );
 }
}
五.配置消息监听
@Configuration
public class RedisMessageListener {
 /**
  * 创建连接工厂
  * @param connectionFactory
  * @param listenerAdapter
  * @return
  */
 @Bean
 public RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
             MessageListenerAdapter listenerAdapter,MessageListenerAdapter listenerAdapter2){
  RedisMessageListenerContainer container = new RedisMessageListenerContainer();
  container.setConnectionFactory(connectionFactory);
  //接受消息的key
  container.addMessageListener(listenerAdapter,new PatternTopic("phone"));
  return container;
 }
 /**
  * 绑定消息监听者和接收监听的方法
  * @param receiver
  * @return
  */
 @Bean
 public MessageListenerAdapter listenerAdapter(ReceiverRedisMessage receiver){
  return new MessageListenerAdapter(receiver,"receiveMessage");
 }
 /**
  * 注册订阅者
  * @param latch
  * @return
  */
 @Bean
 ReceiverRedisMessage receiver(CountDownLatch latch) {
  return new ReceiverRedisMessage(latch);
 }
 /**
  * 计数器,用来控制线程
  * @return
  */
 @Bean
 public CountDownLatch latch(){
  return new CountDownLatch(1);//指定了计数的次数 1
 }
}
六.消息订阅方法
public class ReceiverRedisMessage {
 private static final Logger log = LoggerFactory.getLogger(ReceiverRedisMessage.class);
 private CountDownLatch latch;
 @Autowired
 public ReceiverRedisMessage(CountDownLatch latch) {
  this.latch = latch;
 }
 /**
  * 队列消息接收方法
  *
  * @param jsonMsg
  */
 public void receiveMessage(String jsonMsg) {
  log.info("[开始消费REDIS消息队列phone数据...]");
  try {
   log.info("监听者收到消息:{}", jsonMsg);
   JSONObject exJson = JSONObject.parseObject(jsonMsg);
   User user = JSON.toJavaObject(exJson, User.class);
   System.out.println("转化为对象 :"+user);
   log.info("[消费REDIS消息队列phone数据成功.]");
  } catch (Exception e) {
   log.error("[消费REDIS消息队列phone数据失败,失败信息:{}]", e.getMessage());
  }
  latch.countDown();
 }
}
七.定时消息发布测试
@EnableScheduling
@Component
public class PublisherController {
 private static final Logger log = LoggerFactory.getLogger(PublisherController.class);
 @Autowired
 private RedisUtils redisUtils;
 @Scheduled(fixedRate = 5000)
 public String pubMsg() {
  User user=new User(1, "尚***", 26,"男","陕西省xxxx市xxxxxx县");
  redisUtils.publish("phone", user);
  log.info("Publisher sendes Topic... ");
  return "success";
 }
}
八.测试结果
九.发布对象User实体
public class User implements Serializable {
 /**
  * 
  */
 private static final long serialVersionUID = 1L;
 private int id;
 private String name;
 private int age;
 private String sex;
 private String address;
  .....................
}