redis的订阅与发布功能

1：yml配置

server:
  port: 8082
spring:
  application:
    name: order-nacos
  redis:
    host: 127.0.0.1
    password: 123456
    database: 0
logging:
  level:
    root: info

2：pom.xm依赖

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.6.11</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-websocket</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.83_noneautotype</version>
        </dependency>

3-1：RedisConfig

package com.test.order.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.listener.ChannelTopic;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.listener.adapter.MessageListenerAdapter;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import javax.annotation.Resource;
import java.time.Duration;

import static java.util.Collections.singletonMap;

/**
 * 开启缓存支持
 *
 * @author xqf
 * @Return:
 */
@Slf4j
@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {

    @Resource
    private LettuceConnectionFactory lettuceConnectionFactory;

    /**
     * RedisTemplate配置
     *
     * @param lettuceConnectionFactory
     * @return
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
        log.info(" --- redis config init --- ");
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = jacksonSerializer();
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();
        redisTemplate.setConnectionFactory(lettuceConnectionFactory);
        RedisSerializer<String> stringSerializer = new StringRedisSerializer();

        // key序列化
        redisTemplate.setKeySerializer(stringSerializer);
        // value序列化
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        // Hash key序列化
        redisTemplate.setHashKeySerializer(stringSerializer);
        // Hash value序列化
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

    /**
     * 缓存配置管理器
     *
     * @param factory
     * @return
     */
    @Bean
    public CacheManager cacheManager(LettuceConnectionFactory factory) {
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = jacksonSerializer();
        // 配置序列化（解决乱码的问题）,并且配置缓存默认有效期 6小时
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofHours(6));
        RedisCacheConfiguration redisCacheConfiguration = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer));
        //.disableCachingNullValues();

        // 以锁写入的方式创建RedisCacheWriter对象
        //update-begin-author:taoyan date:20210316 for:注解CacheEvict根据key删除redis支持通配符*
        RedisCacheWriter writer = new JeecgRedisCacheWriter(factory, Duration.ofMillis(50L));
        //RedisCacheWriter.lockingRedisCacheWriter(factory);
        // 创建默认缓存配置对象
        /* 默认配置，设置缓存有效期 1小时*/
        //RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofHours(1));
        // 自定义配置test:demo 的超时时间为 5分钟
        RedisCacheManager cacheManager = RedisCacheManager.builder(writer).cacheDefaults(redisCacheConfiguration)
                .withInitialCacheConfigurations(singletonMap(CacheConstant.SYS_DICT_TABLE_CACHE,
                        RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofMinutes(10)).disableCachingNullValues()
                                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))))
                .withInitialCacheConfigurations(singletonMap(CacheConstant.TEST_DEMO_CACHE, RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofMinutes(5)).disableCachingNullValues()))
                .withInitialCacheConfigurations(singletonMap(CacheConstant.PLUGIN_MALL_RANKING, RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofHours(24)).disableCachingNullValues()))
                .withInitialCacheConfigurations(singletonMap(CacheConstant.PLUGIN_MALL_PAGE_LIST, RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofHours(24)).disableCachingNullValues()))
                .transactionAware().build();
        //update-end-author:taoyan date:20210316 for:注解CacheEvict根据key删除redis支持通配符*
        return cacheManager;
    }

    /**
     * redis 监听配置
     *
     * @param redisConnectionFactory redis 配置
     * @return
     */
    @Bean
    public RedisMessageListenerContainer redisContainer(RedisConnectionFactory redisConnectionFactory, RedisReceiver redisReceiver, MessageListenerAdapter commonListenerAdapter) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(redisConnectionFactory);
        container.addMessageListener(commonListenerAdapter, new ChannelTopic(GlobalConstants.REDIS_TOPIC_NAME));
        return container;
    }


    @Bean
    MessageListenerAdapter commonListenerAdapter(RedisReceiver redisReceiver) {
        MessageListenerAdapter messageListenerAdapter = new MessageListenerAdapter(redisReceiver, "onMessage");
        messageListenerAdapter.setSerializer(jacksonSerializer());
        return messageListenerAdapter;
    }

    private Jackson2JsonRedisSerializer jacksonSerializer() {
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
        return jackson2JsonRedisSerializer;
    }


}

3-2：RedisReceiver

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//

package com.test.order.config;

import cn.hutool.core.util.ObjectUtil;
import org.springframework.stereotype.Component;

@Component
public class RedisReceiver {
    public void onMessage(BaseMap params) {
        Object handlerName = params.get("handlerName");
        JeecgRedisListener messageListener = (JeecgRedisListener)SpringContextHolder.getHandler(handlerName.toString(), JeecgRedisListener.class);
        if (ObjectUtil.isNotEmpty(messageListener)) {
            messageListener.onMessage(params);
        }

    }

    public RedisReceiver() {
    }

    public boolean equals(final Object o) {
        if (o == this) {
            return true;
        } else if (!(o instanceof RedisReceiver)) {
            return false;
        } else {
            RedisReceiver other = (RedisReceiver)o;
            return other.canEqual(this);
        }
    }

    protected boolean canEqual(final Object other) {
        return other instanceof RedisReceiver;
    }

    public int hashCode() {
        //int result = true;
        return 1;
    }

    public String toString() {
        return "RedisReceiver()";
    }
}

3-3：JeecgRedisClient

package com.test.order.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.RedisTemplate;

import javax.annotation.Resource;

@Configuration
public class JeecgRedisClient {
    @Resource
    private RedisTemplate<String, Object> redisTemplate;

    public JeecgRedisClient() {
    }

    public void sendMessage(String handlerName, BaseMap params) {
        params.put("handlerName", handlerName);
        this.redisTemplate.convertAndSend("jeecg_redis_topic", params);
    }
}

3-4：JeecgRedisListener

package com.test.order.config;

public interface JeecgRedisListener {
    void onMessage(BaseMap message);
}

3-5：BaseMap

package com.test.order.config;

import cn.hutool.core.util.ObjectUtil;

import java.math.BigDecimal;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.stream.Collectors;
import org.apache.commons.beanutils.ConvertUtils;

public class BaseMap extends HashMap<String, Object> {
    private static final long serialVersionUID = 1L;

    public BaseMap() {
    }

    public BaseMap(Map<String, Object> map) {
        this.putAll(map);
    }

    public BaseMap put(String key, Object value) {
        super.put(key, Optional.ofNullable(value).orElse(""));
        return this;
    }

    public BaseMap add(String key, Object value) {
        super.put(key, Optional.ofNullable(value).orElse(""));
        return this;
    }

    public <T> T get(String key) {
        Object obj = super.get(key);
        return ObjectUtil.isNotEmpty(obj) ? (T) obj : null;
    }

    public Boolean getBoolean(String key) {
        Object obj = super.get(key);
        return ObjectUtil.isNotEmpty(obj) ? Boolean.valueOf(obj.toString()) : false;
    }

    public Long getLong(String key) {
        Object v = this.get(key);
        return ObjectUtil.isNotEmpty(v) ? new Long(v.toString()) : null;
    }

    public Long[] getLongs(String key) {
        Object v = this.get(key);
        return ObjectUtil.isNotEmpty(v) ? (Long[])((Long[])v) : null;
    }

    public List<Long> getListLong(String key) {
        List<String> list = (List)this.get(key);
        return ObjectUtil.isNotEmpty(list) ? (List)list.stream().map((e) -> {
            return new Long(e);
        }).collect(Collectors.toList()) : null;
    }

    public Long[] getLongIds(String key) {
        Object ids = this.get(key);
        return ObjectUtil.isNotEmpty(ids) ? (Long[])((Long[])ConvertUtils.convert(ids.toString().split(","), Long.class)) : null;
    }

    public Integer getInt(String key, Integer def) {
        Object v = this.get(key);
        return ObjectUtil.isNotEmpty(v) ? Integer.parseInt(v.toString()) : def;
    }

    public Integer getInt(String key) {
        Object v = this.get(key);
        return ObjectUtil.isNotEmpty(v) ? Integer.parseInt(v.toString()) : 0;
    }

    public BigDecimal getBigDecimal(String key) {
        Object v = this.get(key);
        return ObjectUtil.isNotEmpty(v) ? new BigDecimal(v.toString()) : new BigDecimal("0");
    }

    public <T> T get(String key, T def) {
        Object obj = super.get(key);
        return ObjectUtil.isEmpty(obj) ? def : (T) obj;
    }

    public static BaseMap toBaseMap(Map<String, Object> obj) {
        BaseMap map = new BaseMap();
        map.putAll(obj);
        return map;
    }
}

3-6：CacheConstant

package com.test.order.config;

/**
 * @author: huangxutao
 * @date: 2019-06-14
 * @description: 缓存常量
 */
public interface CacheConstant {

	/**
	 * 字典信息缓存（含禁用的字典项）
	 */
    public static final String SYS_DICT_CACHE = "sys:cache:dict";

	/**
	 * 字典信息缓存 status为有效的
	 */
	public static final String SYS_ENABLE_DICT_CACHE = "sys:cache:dictEnable";
	/**
	 * 表字典信息缓存
	 */
    public static final String SYS_DICT_TABLE_CACHE = "sys:cache:dictTable";
	public static final String SYS_DICT_TABLE_BY_KEYS_CACHE = SYS_DICT_TABLE_CACHE + "ByKeys";

	/**
	 * 数据权限配置缓存
	 */
    public static final String SYS_DATA_PERMISSIONS_CACHE = "sys:cache:permission:datarules";

	/**
	 * 缓存用户信息【加密】
	 */
	public static final String SYS_USERS_CACHE = "sys:cache:encrypt:user";

	/**
	 * 全部部门信息缓存
	 */
	public static final String SYS_DEPARTS_CACHE = "sys:cache:depart:alldata";


	/**
	 * 全部部门ids缓存
	 */
	public static final String SYS_DEPART_IDS_CACHE = "sys:cache:depart:allids";


	/**
	 * 测试缓存key
	 */
	public static final String TEST_DEMO_CACHE = "test:demo";

	/**
	 * 字典信息缓存
	 */
	public static final String SYS_DYNAMICDB_CACHE = "sys:cache:dbconnect:dynamic:";

	/**
	 * gateway路由缓存
	 */
	public static final String GATEWAY_ROUTES = "sys:cache:cloud:gateway_routes";


	/**
	 * gateway路由 reload key
	 */
	public static final String ROUTE_JVM_RELOAD_TOPIC = "gateway_jvm_route_reload_topic";

	/**
	 * TODO 冗余代码 待删除
	 *插件商城排行榜
	 */
	public static final String PLUGIN_MALL_RANKING = "pluginMall::rankingList";
	/**
	 * TODO 冗余代码 待删除
	 *插件商城排行榜
	 */
	public static final String PLUGIN_MALL_PAGE_LIST = "pluginMall::queryPageList";


	/**
	 * online列表页配置信息缓存key
	 */
	public static final String ONLINE_LIST = "sys:cache:online:list";

	/**
	 * online表单页配置信息缓存key
	 */
	public static final String ONLINE_FORM = "sys:cache:online:form";

	/**
	 * online报表
	 */
	public static final String ONLINE_RP = "sys:cache:online:rp";

	/**
	 * online图表
	 */
	public static final String ONLINE_GRAPH = "sys:cache:online:graph";
	/**
	 * 拖拽页面信息缓存
	 */
	public static final String DRAG_PAGE_CACHE = "drag:cache:page";
}

3-7：CommonAPI

package com.test.order.config;


import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * 通用api
 * @author: jeecg-boot
 */
public interface CommonAPI {

    /**
     * 1查询用户角色信息
     * @param username
     * @return
     */
    Set<String> queryUserRoles(String username);


    /**
     * 2查询用户权限信息
     * @param userId
     * @return
     */
    Set<String> queryUserAuths(String userId);


    /**
     * 6字典表的 翻译
     * @param table
     * @param text
     * @param code
     * @param key
     * @return
     */
    String translateDictFromTable(String table, String text, String code, String key);

    /**
     * 7普通字典的翻译
     * @param code
     * @param key
     * @return
     */
    String translateDict(String code, String key);



}

3-8：CommonConfig

package com.test.order.config;

import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class CommonConfig {

    /**
     * Spring上下文工具配置
     *
     * @return
     */
    @Bean
    //当bean为SpringContextHolder不存在时，就执行下面的方法创建bean
    @ConditionalOnMissingBean(SpringContextHolder.class)
    public SpringContextHolder springContextHolder() {
        SpringContextHolder holder = new SpringContextHolder();
        return holder;
    }
}

3-9：CommonSendStatus

package com.test.order.config;

/**
 * 	系统通告 - 发布状态
 * @Author LeeShaoQing
 *
 */
public interface CommonSendStatus {

    /**
     * 未发布
     */
    public static final String UNPUBLISHED_STATUS_0 = "0";

    /**
     * 已发布
     */
	public static final String PUBLISHED_STATUS_1 = "1";

    /**
     * 撤销
     */
	public static final String REVOKE_STATUS_2 = "2";

    /**
     * app端推送会话标识后缀
     */
	public static final String  APP_SESSION_SUFFIX = "_app";


	/**-----【流程相关通知模板code】------------------------------------------------------------*/
	/**流程催办------系统通知消息模板*/
	public static final String TZMB_BPM_CUIBAN = "bpm_cuiban";
	/**流程抄送------系统通知消息模板*/
	public static final String TZMB_BPM_CC = "bpm_cc";
	/**流程催办------邮件通知消息模板*/
	public static final String TZMB_BPM_CUIBAN_EMAIL = "bpm_cuiban_email";
	/**标准模板---系统消息通知*/
	public static final String TZMB_SYS_TS_NOTE = "sys_ts_note";
	/**流程超时提醒------系统通知消息模板*/
	public static final String TZMB_BPM_CHAOSHI_TIP = "bpm_chaoshi_tip";
	/**-----【流程相关通知模板code】-----------------------------------------------------------*/

	/**
	 * 系统通知拓展参数（比如：用于流程抄送和催办通知，这里额外传递流程跳转页面所需要的路由参数）
	 */
	public static final String MSG_ABSTRACT_JSON = "msg_abstract";
}

3-10：GlobalConstants

package com.test.order.config;

/**
* @Description: GlobalConstants
* @author: scott
* @date: 2020/01/01 16:01
*/
public class GlobalConstants {

    /**
     * 业务处理器beanName传递参数
     */
    public static final String HANDLER_NAME = "handlerName";
    /**
     * 路由刷新触发器
     */
    public static final String LODER_ROUDER_HANDLER = "loderRouderHandler";

    /**
     * redis消息通道名称
     */
    public static final String REDIS_TOPIC_NAME="jeecg_redis_topic";
}

3-11：JeecgRedisCacheWriter

package com.test.order.config;

import java.nio.charset.StandardCharsets;
import java.time.Duration;
import java.util.Collections;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import java.util.function.Function;

import lombok.extern.slf4j.Slf4j;
import org.springframework.dao.PessimisticLockingFailureException;
import org.springframework.data.redis.cache.CacheStatistics;
import org.springframework.data.redis.cache.CacheStatisticsCollector;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisStringCommands.SetOption;
import org.springframework.data.redis.core.types.Expiration;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
* 该类参照 DefaultRedisCacheWriter 重写了 remove 方法实现通配符*删除
*
* @author: scott
* @date: 2020/01/01 16:18
*/
@Slf4j
public class JeecgRedisCacheWriter implements RedisCacheWriter {

    private final RedisConnectionFactory connectionFactory;
    private final Duration sleepTime;

    public JeecgRedisCacheWriter(RedisConnectionFactory connectionFactory) {
        this(connectionFactory, Duration.ZERO);
    }

    public JeecgRedisCacheWriter(RedisConnectionFactory connectionFactory, Duration sleepTime) {
        Assert.notNull(connectionFactory, "ConnectionFactory must not be null!");
        Assert.notNull(sleepTime, "SleepTime must not be null!");
        this.connectionFactory = connectionFactory;
        this.sleepTime = sleepTime;
    }

    @Override
    public void put(String name, byte[] key, byte[] value, @Nullable Duration ttl) {
        Assert.notNull(name, "Name must not be null!");
        Assert.notNull(key, "Key must not be null!");
        Assert.notNull(value, "Value must not be null!");
        this.execute(name, (connection) -> {
            if (shouldExpireWithin(ttl)) {
                connection.set(key, value, Expiration.from(ttl.toMillis(), TimeUnit.MILLISECONDS), SetOption.upsert());
            } else {
                connection.set(key, value);
            }

            return "OK";
        });
    }

    @Override
    public byte[] get(String name, byte[] key) {
        Assert.notNull(name, "Name must not be null!");
        Assert.notNull(key, "Key must not be null!");
        return (byte[])this.execute(name, (connection) -> {
            return connection.get(key);
        });
    }

    @Override
    public byte[] putIfAbsent(String name, byte[] key, byte[] value, @Nullable Duration ttl) {
        Assert.notNull(name, "Name must not be null!");
        Assert.notNull(key, "Key must not be null!");
        Assert.notNull(value, "Value must not be null!");
        return (byte[])this.execute(name, (connection) -> {
            if (this.isLockingCacheWriter()) {
                this.doLock(name, connection);
            }

            Object var7;
            try {
                boolean put;
                if (shouldExpireWithin(ttl)) {
                    put = connection.set(key, value, Expiration.from(ttl), SetOption.ifAbsent());
                } else {
                    put = connection.setNX(key, value);
                }

                if (!put) {
                    byte[] var11 = connection.get(key);
                    return var11;
                }

                var7 = null;
            } finally {
                if (this.isLockingCacheWriter()) {
                    this.doUnlock(name, connection);
                }

            }

            return (byte[])var7;
        });
    }

    @Override
    public void remove(String name, byte[] key) {
        Assert.notNull(name, "Name must not be null!");
        Assert.notNull(key, "Key must not be null!");
        String keyString = new String(key);
        log.info("redis remove key:" + keyString);
        String keyIsAll = "*";
        if(keyString!=null && keyString.endsWith(keyIsAll)){
            execute(name, connection -> {
                // 获取某个前缀所拥有的所有的键，某个前缀开头，后面肯定是*
                Set<byte[]> keys = connection.keys(key);
                int delNum = 0;
                for (byte[] keyByte : keys) {
                    delNum += connection.del(keyByte);
                }
                return delNum;
            });
        }else{
            this.execute(name, (connection) -> {
                return connection.del(new byte[][]{key});
            });
        }
    }

    @Override
    public void clean(String name, byte[] pattern) {
        Assert.notNull(name, "Name must not be null!");
        Assert.notNull(pattern, "Pattern must not be null!");
        this.execute(name, (connection) -> {
            boolean wasLocked = false;

            try {
                if (this.isLockingCacheWriter()) {
                    this.doLock(name, connection);
                    wasLocked = true;
                }

                byte[][] keys = (byte[][])((Set)Optional.ofNullable(connection.keys(pattern)).orElse(Collections.emptySet())).toArray(new byte[0][]);
                if (keys.length > 0) {
                    connection.del(keys);
                }
            } finally {
                if (wasLocked && this.isLockingCacheWriter()) {
                    this.doUnlock(name, connection);
                }

            }

            return "OK";
        });
    }

    void lock(String name) {
        this.execute(name, (connection) -> {
            return this.doLock(name, connection);
        });
    }

    void unlock(String name) {
        this.executeLockFree((connection) -> {
            this.doUnlock(name, connection);
        });
    }

    private Boolean doLock(String name, RedisConnection connection) {
        return connection.setNX(createCacheLockKey(name), new byte[0]);
    }

    private Long doUnlock(String name, RedisConnection connection) {
        return connection.del(new byte[][]{createCacheLockKey(name)});
    }

    boolean doCheckLock(String name, RedisConnection connection) {
        return connection.exists(createCacheLockKey(name));
    }

    private boolean isLockingCacheWriter() {
        return !this.sleepTime.isZero() && !this.sleepTime.isNegative();
    }

    private <T> T execute(String name, Function<RedisConnection, T> callback) {
        RedisConnection connection = this.connectionFactory.getConnection();

        try {
            this.checkAndPotentiallyWaitUntilUnlocked(name, connection);
            return callback.apply(connection);
        } finally {
            connection.close();
        }

    }

    private void executeLockFree(Consumer<RedisConnection> callback) {
        RedisConnection connection = this.connectionFactory.getConnection();

        try {
            callback.accept(connection);
        } finally {
            connection.close();
        }

    }

    private void checkAndPotentiallyWaitUntilUnlocked(String name, RedisConnection connection) {
        if (this.isLockingCacheWriter()) {
            try {
                while(this.doCheckLock(name, connection)) {
                    Thread.sleep(this.sleepTime.toMillis());
                }

            } catch (InterruptedException var4) {
                Thread.currentThread().interrupt();
                throw new PessimisticLockingFailureException(String.format("Interrupted while waiting to unlock cache %s", name), var4);
            }
        }
    }

    private static boolean shouldExpireWithin(@Nullable Duration ttl) {
        return ttl != null && !ttl.isZero() && !ttl.isNegative();
    }

    private static byte[] createCacheLockKey(String name) {
        return (name + "~lock").getBytes(StandardCharsets.UTF_8);
    }

    //update-begin-author:zyf date:20220216 for:升级springboot版本到2.4.0+以后需要实现的方法*
    private final CacheStatisticsCollector statistics = CacheStatisticsCollector.create();
    @Override
    public CacheStatistics getCacheStatistics(String cacheName) {
        return statistics.getCacheStatistics(cacheName);
    }

    @Override
    public void clearStatistics(String name) {

    }

    @Override
    public RedisCacheWriter withStatisticsCollector(CacheStatisticsCollector cacheStatisticsCollector) {
        return null;
    }
    //update-begin-author:zyf date:20220216 for:升级springboot版本到2.4.0+以后需要实现的方法*
}

3-12：RedisUtil

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by FernFlower decompiler)
//

package com.test.order.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

@Component
public class RedisUtil {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    public RedisUtil() {
    }

    public boolean expire(String key, long time) {
        try {
            if (time > 0L) {
                this.redisTemplate.expire(key, time, TimeUnit.SECONDS);
            }

            return true;
        } catch (Exception var5) {
            var5.printStackTrace();
            return false;
        }
    }

    public long getExpire(String key) {
        return this.redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }

    public boolean hasKey(String key) {
        try {
            return this.redisTemplate.hasKey(key);
        } catch (Exception var3) {
            var3.printStackTrace();
            return false;
        }
    }

    public void del(String... key) {
        if (key != null && key.length > 0) {
            if (key.length == 1) {
                this.redisTemplate.delete(key[0]);
            } else {
                this.redisTemplate.delete(Arrays.asList(key));
            }
        }

    }

    public Object get(String key) {
        return key == null ? null : this.redisTemplate.opsForValue().get(key);
    }

    public boolean set(String key, Object value) {
        try {
            this.redisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception var4) {
            var4.printStackTrace();
            return false;
        }
    }

    public boolean set(String key, Object value, long time) {
        try {
            if (time > 0L) {
                this.redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            } else {
                this.set(key, value);
            }

            return true;
        } catch (Exception var6) {
            var6.printStackTrace();
            return false;
        }
    }

    public long incr(String key, long delta) {
        if (delta < 0L) {
            throw new RuntimeException("递增因子必须大于0");
        } else {
            return this.redisTemplate.opsForValue().increment(key, delta);
        }
    }

    public long decr(String key, long delta) {
        if (delta < 0L) {
            throw new RuntimeException("递减因子必须大于0");
        } else {
            return this.redisTemplate.opsForValue().increment(key, -delta);
        }
    }

    public Object hget(String key, String item) {
        return this.redisTemplate.opsForHash().get(key, item);
    }

    public Map<Object, Object> hmget(String key) {
        return this.redisTemplate.opsForHash().entries(key);
    }

    public boolean hmset(String key, Map<String, Object> map) {
        try {
            this.redisTemplate.opsForHash().putAll(key, map);
            return true;
        } catch (Exception var4) {
            var4.printStackTrace();
            return false;
        }
    }

    public boolean hmset(String key, Map<String, Object> map, long time) {
        try {
            this.redisTemplate.opsForHash().putAll(key, map);
            if (time > 0L) {
                this.expire(key, time);
            }

            return true;
        } catch (Exception var6) {
            var6.printStackTrace();
            return false;
        }
    }

    public boolean hset(String key, String item, Object value) {
        try {
            this.redisTemplate.opsForHash().put(key, item, value);
            return true;
        } catch (Exception var5) {
            var5.printStackTrace();
            return false;
        }
    }

    public boolean hset(String key, String item, Object value, long time) {
        try {
            this.redisTemplate.opsForHash().put(key, item, value);
            if (time > 0L) {
                this.expire(key, time);
            }

            return true;
        } catch (Exception var7) {
            var7.printStackTrace();
            return false;
        }
    }

    public void hdel(String key, Object... item) {
        this.redisTemplate.opsForHash().delete(key, item);
    }

    public boolean hHasKey(String key, String item) {
        return this.redisTemplate.opsForHash().hasKey(key, item);
    }

    public double hincr(String key, String item, double by) {
        return this.redisTemplate.opsForHash().increment(key, item, by);
    }

    public double hdecr(String key, String item, double by) {
        return this.redisTemplate.opsForHash().increment(key, item, -by);
    }

    public Set<Object> sGet(String key) {
        try {
            return this.redisTemplate.opsForSet().members(key);
        } catch (Exception var3) {
            var3.printStackTrace();
            return null;
        }
    }

    public boolean sHasKey(String key, Object value) {
        try {
            return this.redisTemplate.opsForSet().isMember(key, value);
        } catch (Exception var4) {
            var4.printStackTrace();
            return false;
        }
    }

    public long sSet(String key, Object... values) {
        try {
            return this.redisTemplate.opsForSet().add(key, values);
        } catch (Exception var4) {
            var4.printStackTrace();
            return 0L;
        }
    }

    public long sSetAndTime(String key, long time, Object... values) {
        try {
            Long count = this.redisTemplate.opsForSet().add(key, values);
            if (time > 0L) {
                this.expire(key, time);
            }

            return count;
        } catch (Exception var6) {
            var6.printStackTrace();
            return 0L;
        }
    }

    public long sGetSetSize(String key) {
        try {
            return this.redisTemplate.opsForSet().size(key);
        } catch (Exception var3) {
            var3.printStackTrace();
            return 0L;
        }
    }

    public long setRemove(String key, Object... values) {
        try {
            Long count = this.redisTemplate.opsForSet().remove(key, values);
            return count;
        } catch (Exception var4) {
            var4.printStackTrace();
            return 0L;
        }
    }

    public List<Object> lGet(String key, long start, long end) {
        try {
            return this.redisTemplate.opsForList().range(key, start, end);
        } catch (Exception var7) {
            var7.printStackTrace();
            return null;
        }
    }

    public long lGetListSize(String key) {
        try {
            return this.redisTemplate.opsForList().size(key);
        } catch (Exception var3) {
            var3.printStackTrace();
            return 0L;
        }
    }

    public Object lGetIndex(String key, long index) {
        try {
            return this.redisTemplate.opsForList().index(key, index);
        } catch (Exception var5) {
            var5.printStackTrace();
            return null;
        }
    }

    public boolean lSet(String key, Object value) {
        try {
            this.redisTemplate.opsForList().rightPush(key, value);
            return true;
        } catch (Exception var4) {
            var4.printStackTrace();
            return false;
        }
    }

    public boolean lSet(String key, Object value, long time) {
        try {
            this.redisTemplate.opsForList().rightPush(key, value);
            if (time > 0L) {
                this.expire(key, time);
            }

            return true;
        } catch (Exception var6) {
            var6.printStackTrace();
            return false;
        }
    }

    public boolean lSet(String key, List<Object> value) {
        try {
            this.redisTemplate.opsForList().rightPushAll(key, value);
            return true;
        } catch (Exception var4) {
            var4.printStackTrace();
            return false;
        }
    }

    public boolean lSet(String key, List<Object> value, long time) {
        try {
            this.redisTemplate.opsForList().rightPushAll(key, value);
            if (time > 0L) {
                this.expire(key, time);
            }

            return true;
        } catch (Exception var6) {
            var6.printStackTrace();
            return false;
        }
    }

    public boolean lUpdateIndex(String key, long index, Object value) {
        try {
            this.redisTemplate.opsForList().set(key, index, value);
            return true;
        } catch (Exception var6) {
            var6.printStackTrace();
            return false;
        }
    }

    public long lRemove(String key, long count, Object value) {
        try {
            Long remove = this.redisTemplate.opsForList().remove(key, count, value);
            return remove;
        } catch (Exception var6) {
            var6.printStackTrace();
            return 0L;
        }
    }

}

3-13：SocketHandler

package com.test.order.config;

import cn.hutool.core.util.ObjectUtil;
import com.test.order.controller.OrderController;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Slf4j
@Component(WebSocket.REDIS_TOPIC_NAME)
public class SocketHandler implements JeecgRedisListener {

    @Autowired
    private WebSocket webSocket;

    @Override
    public void onMessage(BaseMap map) {
        log.info("【Redis发布订阅模式】redis Listener: {}，参数：{}",WebSocket.REDIS_TOPIC_NAME, map.toString());

        String userId = map.get("userId");
        String message = map.get("message");
        if (ObjectUtil.isNotEmpty(userId)) {
            //pc端消息推送具体人
            webSocket.pushMessage(userId, message);
            //app端消息推送具体人
            webSocket.pushMessage(userId+CommonSendStatus.APP_SESSION_SUFFIX, message);
        } else {
            //推送全部
            webSocket.pushMessage(message);
        }

    }
}

3-14：SpringContextHolder

package com.test.order.config;

import cn.hutool.core.util.ObjectUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

/**
 * 以静态变量保存Spring ApplicationContext, 可在任何代码任何地方任何时候中取出ApplicaitonContext.
 *
 * @author zyf
 */
@Slf4j
public class SpringContextHolder implements ApplicationContextAware {
    private static ApplicationContext applicationContext;

    /**
     * 实现ApplicationContextAware接口的context注入函数, 将其存入静态变量.
     */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) {
        // NOSONAR
        SpringContextHolder.applicationContext = applicationContext;
    }

    /**
     * 取得存储在静态变量中的ApplicationContext.
     */
    public static ApplicationContext getApplicationContext() {
        checkApplicationContext();
        return applicationContext;
    }

    /**
     * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
     */
    public static <T> T getBean(String name) {
        checkApplicationContext();
        return (T) applicationContext.getBean(name);
    }

    /**
     * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
     */
    public static <T> T getHandler(String name, Class<T> cls) {
        T t = null;
        if (ObjectUtil.isNotEmpty(name)) {
            checkApplicationContext();
            try {
                t = applicationContext.getBean(name, cls);
            } catch (Exception e) {
                log.warn("Customize redis listener handle [ " + name + " ], does not exist！");
            }
        }
        return t;
    }


    /**
     * 从静态变量ApplicationContext中取得Bean, 自动转型为所赋值对象的类型.
     */
    public static <T> T getBean(Class<T> clazz) {
        checkApplicationContext();
        return applicationContext.getBean(clazz);
    }

    /**
     * 清除applicationContext静态变量.
     */
    public static void cleanApplicationContext() {
        applicationContext = null;
    }

    private static void checkApplicationContext() {
        if (applicationContext == null) {
            throw new IllegalStateException("applicaitonContext未注入,请在applicationContext.xml中定义SpringContextHolder");
        }
    }

}

3-15：WebsocketConst

package com.test.order.config;

/**
 * @Description: Websocket常量类
 * @author: taoyan
 * @date: 2020年03月23日
 */
public class WebsocketConst {


    /**
     * 消息json key:cmd
     */
    public static final String MSG_CMD = "cmd";

    /**
     * 消息json key:msgId
     */
    public static final String MSG_ID = "msgId";

    /**
     * 消息json key:msgTxt
     */
    public static final String MSG_TXT = "msgTxt";

    /**
     * 消息json key:userId
     */
    public static final String MSG_USER_ID = "userId";

    /**
     * 消息json key:chat
     */
    public static final String MSG_CHAT = "chat";

    /**
     * 消息类型 heartcheck
     */
    public static final String CMD_CHECK = "heartcheck";

    /**
     * 消息类型 user 用户消息
     */
    public static final String CMD_USER = "user";

    /**
     * 消息类型 topic 系统通知
     */
    public static final String CMD_TOPIC = "topic";

    /**
     * 消息类型 email
     */
    public static final String CMD_EMAIL = "email";

    /**
     * 消息类型 meetingsign 会议签到
     */
    public static final String CMD_SIGN = "sign";

    /**
     * 消息类型 新闻发布/取消
     */
    public static final String NEWS_PUBLISH = "publish";

}

3-16：WebSocket

package com.test.order.config;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import lombok.extern.slf4j.Slf4j;

/**
 * @Author scott
 * @Date 2019/11/29 9:41
 * @Description: 此注解相当于设置访问URL
 */
@Component
@Slf4j
@ServerEndpoint("/websocket/{userId}")
public class WebSocket {
    
    /**线程安全Map*/
    private static ConcurrentHashMap<String, Session> sessionPool = new ConcurrentHashMap<>();

    /**
     * Redis触发监听名字
     */
    public static final String REDIS_TOPIC_NAME = "socketHandler";
    @Autowired
    private JeecgRedisClient jeecgRedisClient;


    //==========【websocket接受、推送消息等方法 ------ 具体服务节点推送ws消息】========================================================================================
    @OnOpen
    public void onOpen(Session session, @PathParam(value = "userId") String userId) {
        try {
            sessionPool.put(userId, session);
            log.info("【系统 WebSocket】有新的连接，总数为:" + sessionPool.size());
        } catch (Exception e) {
        }
    }

    @OnClose
    public void onClose(@PathParam("userId") String userId) {
        try {
            sessionPool.remove(userId);
            log.info("【系统 WebSocket】连接断开，总数为:" + sessionPool.size());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * ws推送消息
     *
     * @param userId
     * @param message
     */
    public void pushMessage(String userId, String message) {
        for (Map.Entry<String, Session> item : sessionPool.entrySet()) {
            //userId key值= {用户id + "_"+ 登录token的md5串}
            //TODO vue2未改key新规则，暂时不影响逻辑
            if (item.getKey().contains(userId)) {
                Session session = item.getValue();
                try {
                    //update-begin-author:taoyan date:20211012 for: websocket报错 https://gitee.com/jeecg/jeecg-boot/issues/I4C0MU
                    synchronized (session){
                        log.debug("【系统 WebSocket】推送单人消息:" + message);
                        session.getBasicRemote().sendText(message);
                    }
                    //update-end-author:taoyan date:20211012 for: websocket报错 https://gitee.com/jeecg/jeecg-boot/issues/I4C0MU
                } catch (Exception e) {
                    log.error(e.getMessage(),e);
                }
            }
        }
    }

    /**
     * ws遍历群发消息
     */
    public void pushMessage(String message) {
        try {
            for (Map.Entry<String, Session> item : sessionPool.entrySet()) {
                try {
                    item.getValue().getAsyncRemote().sendText(message);
                } catch (Exception e) {
                    log.error(e.getMessage(), e);
                }
            }
            log.debug("【系统 WebSocket】群发消息:" + message);
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
    }


    /**
     * ws接受客户端消息
     */
    @OnMessage
    public void onMessage(String message, @PathParam(value = "userId") String userId) {
        if(!"ping".equals(message) && !WebsocketConst.CMD_CHECK.equals(message)){
            log.debug("【系统 WebSocket】收到客户端消息:" + message);
        }else{
            log.debug("【系统 WebSocket】收到客户端消息:" + message);
        }
        
//        //------------------------------------------------------------------------------
//        JSONObject obj = new JSONObject();
//        //业务类型
//        obj.put(WebsocketConst.MSG_CMD, WebsocketConst.CMD_CHECK);
//        //消息内容
//        obj.put(WebsocketConst.MSG_TXT, "心跳响应");
//        this.pushMessage(userId, obj.toJSONString());
//        //------------------------------------------------------------------------------
    }

    /**
     * 配置错误信息处理
     *
     * @param session
     * @param t
     */
    @OnError
    public void onError(Session session, Throwable t) {
        log.warn("【系统 WebSocket】消息出现错误");
        t.printStackTrace();
    }
    //==========【系统 WebSocket接受、推送消息等方法 ------ 具体服务节点推送ws消息】========================================================================================
    

    //==========【采用redis发布订阅模式------推送消息】========================================================================================
    /**
     * 后台发送消息到redis
     *
     * @param message
     */
    public void sendMessage(String message) {
        //log.debug("【系统 WebSocket】广播消息:" + message);
        BaseMap baseMap = new BaseMap();
        baseMap.put("userId", "");
        baseMap.put("message", message);
        jeecgRedisClient.sendMessage(WebSocket.REDIS_TOPIC_NAME, baseMap);
    }

    /**
     * 此为单点消息 redis
     *
     * @param userId
     * @param message
     */
    public void sendMessage(String userId, String message) {
        BaseMap baseMap = new BaseMap();
        baseMap.put("userId", userId);
        baseMap.put("message", message);
        jeecgRedisClient.sendMessage(WebSocket.REDIS_TOPIC_NAME, baseMap);
    }

    /**
     * 此为单点消息(多人) redis
     *
     * @param userIds
     * @param message
     */
    public void sendMessage(String[] userIds, String message) {
        for (String userId : userIds) {
            sendMessage(userId, message);
        }
    }
    //=======【采用redis发布订阅模式------推送消息】==========================================================================================
    
}

WebSocket 使用@ServerEndpoint生效需要注入一下bean，如果需要WebSocket 认证功能点击连接去查看

    /**
     * 	注入ServerEndpointExporter，
     * 	这个bean会自动注册使用了@ServerEndpoint注解声明的Websocket endpoint
     */
    @Bean
    public ServerEndpointExporter serverEndpointExporter() {
        return new ServerEndpointExporter();
    }

3-17：OrderController

package com.test.order.controller;

import com.alibaba.fastjson.JSONObject;
import com.test.order.config.WebSocket;
import com.test.order.config.WebsocketConst;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**
 * @Description:
 * @Author: xu
 * @Data: 2024-2024/3/29-16
 * @Version: V1.0
 */
@RestController
@RequestMapping("/order")
public class OrderController {

    @Resource
    WebSocket webSocket;

    @RequestMapping("/test")
    public void add() {
        String message="message22";
        JSONObject obj = new JSONObject();
        obj.put(WebsocketConst.MSG_CMD, WebsocketConst.CMD_TOPIC);
        obj.put(WebsocketConst.MSG_ID, "M0001");
        obj.put(WebsocketConst.MSG_TXT, message);
        webSocket.sendMessage(obj.toJSONString());
    }
}