web网站开发学院什么是优化师

整体思路

        1. pom增加redis依赖；

        2. 消息监听器，实现StreamListener接口，处理消息到达逻辑；

        3. 将消息订阅bean及监听器注册到配置中；

1. pom

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.7.6</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency>

2. 消息监听器实现代码

package cn.thuniwhir.fileserver.redis;import com.alibaba.fastjson.JSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.redis.connection.stream.MapRecord;
import org.springframework.data.redis.stream.StreamListener;
import org.springframework.stereotype.Component;import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;/*** @Description: TODO**/
@Component
public class RedisMQListener implements StreamListener<String, MapRecord<String, String, Object>> {private static final Logger log = LoggerFactory.getLogger(RedisMQListener.class);// 创建一个线程池private static final ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(10, 20, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>());@Overridepublic void onMessage(MapRecord message) {// 异步处理消息threadPoolExecutor.execute(()->{System.out.println(Thread.currentThread().getName() + ":接收到的消息：" + message.getId() + ";" + JSON.toJSONString(message.getValue()));});}
}

3. redis订阅bean及监听器注册

package cn.thuniwhir.fileserver.redis;import cn.thuniwhir.fileserver.context.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.stream.Consumer;
import org.springframework.data.redis.connection.stream.ReadOffset;
import org.springframework.data.redis.connection.stream.StreamInfo;
import org.springframework.data.redis.connection.stream.StreamOffset;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.stream.StreamMessageListenerContainer;
import org.springframework.data.redis.stream.Subscription;import java.time.Duration;
import java.util.stream.Collectors;/*** @Description: TODO**/
@Configuration
public class RedisMQConfig {@Autowiredprivate RedisMQListener redisMQListener;@Autowiredprivate RedisUtils redisUtils;private static RedisTemplate<Object, Object> redisTemplate;private static final Logger log = LoggerFactory.getLogger(RedisMQConfig.class);public RedisMQConfig(RedisTemplate<Object, Object> redisTemplate) {this.redisTemplate = redisTemplate;}@Beanpublic Subscription subscription(RedisConnectionFactory redisConnectionFactory) {if (redisUtils.hasKey(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME)) {StreamInfo.XInfoGroups xInfoGroups = redisTemplate.opsForStream().groups(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME);if (xInfoGroups.isEmpty()) {redisTemplate.opsForStream().createGroup(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME);} else {if (xInfoGroups.stream().filter(xInfoGroups1 -> xInfoGroups1.groupName().equals(Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME)).collect(Collectors.toList()).isEmpty()) {redisTemplate.opsForStream().createGroup(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME);}}} else {redisTemplate.opsForStream().createGroup(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME);}StreamMessageListenerContainer.StreamMessageListenerContainerOptions options = StreamMessageListenerContainer.StreamMessageListenerContainerOptions.builder().pollTimeout(Duration.ofSeconds(1)).build();StreamMessageListenerContainer streamMessageListenerContainer = StreamMessageListenerContainer.create(redisConnectionFactory, options);Subscription subscription = streamMessageListenerContainer.receiveAutoAck(Consumer.from(Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME, Constants.FILE_MQ_DISK_THRESHOLD_CONSUMER), StreamOffset.create(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, ReadOffset.lastConsumed()), redisMQListener);streamMessageListenerContainer.start();return subscription;}}

4. 测试生产消息 消息监听成功

4.1 生产消息

@RequestMapping("/produceMessage")public JSONObject produceMessage(@RequestBody JSONObject jsonObject) {String key = jsonObject.getString("key");String value = jsonObject.getString("value");MapRecord<Object, String, Object> mapRecord = MapRecord.create(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Collections.singletonMap(key, value));redisTemplate.opsForStream().add(mapRecord);System.out.println("produceMessage Thread Name:" + Thread.currentThread().getName());return formatResult(null);}

4.2 消息监听器监听消息到达 代码见第二节

4.3 测试结果