<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
            <version>2.3.7.RELEASE</version>
        </dependency>
        
        <!-- 提供redis連接池 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
        </dependency>

        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
            <version>5.6.3</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.75</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.10.0</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.10.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.10.0</version>
        </dependency>

package com.yolo.yoloblog.framework.engine.serializer;

import cn.hutool.core.util.ObjectUtil;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.util.IOUtils;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.databind.ser.std.StdSerializer;
import org.springframework.cache.support.NullValue;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;

import java.io.IOException;

/**
 * 自定義redis序列化方式
 * 問題：
 *  increment操作不會(huì)反序列化而是直接對(duì)存儲(chǔ)的值進(jìn)行操作，此時(shí)該值經(jīng)過Json或Jdk序列化后不能直接進(jìn)行加減操作，因?yàn)椴荒苻D(zhuǎn)換為對(duì)應(yīng)的類型如integer、double、long
 * 解決方式：
 *  最簡(jiǎn)單的辦法就是重寫JsonSerialize的serialize方法，加上一個(gè)判斷，如果是String類型，就直接返回String.getBytes()，對(duì)象還是走原來的序列化方式
 * 總結(jié)：
 *  increment使用要避免和其他需要經(jīng)過序列化的操作混用
 * @author hl
 * @date 2022/4/24 9:36
 */
@Component
public class CustomerGenericJackson2JsonRedisSerializer implements RedisSerializer<Object> {

    private final ObjectMapper mapper;

    public CustomerGenericJackson2JsonRedisSerializer() {
        this((String)null);
    }

    public CustomerGenericJackson2JsonRedisSerializer(@Nullable String classPropertyTypeName) {
        this(new ObjectMapper());
        registerNullValueSerializer(this.mapper, classPropertyTypeName);
        if (StringUtils.hasText(classPropertyTypeName)) {
            this.mapper.enableDefaultTypingAsProperty(ObjectMapper.DefaultTyping.NON_FINAL, classPropertyTypeName);
        } else {
            this.mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
        }

    }

    public CustomerGenericJackson2JsonRedisSerializer(ObjectMapper mapper) {
        Assert.notNull(mapper, "ObjectMapper must not be null!");
        this.mapper = mapper;
    }

    public static void registerNullValueSerializer(ObjectMapper objectMapper, @Nullable String classPropertyTypeName) {
        objectMapper.registerModule((new SimpleModule()).addSerializer(new CustomerGenericJackson2JsonRedisSerializer.NullValueSerializer(classPropertyTypeName)));
    }

    @Override
    public byte[] serialize(Object object) throws SerializationException {
        if (object == null){
            return new byte[0];
        }
        if (object instanceof String){
            return ((String) object).getBytes(IOUtils.UTF8);
        }

        try {
            return JSON.toJSONBytes(object, SerializerFeature.WriteClassName);
        }catch (Exception e){
            throw new SerializationException("Could not serialize: " + e.getMessage(),e);
        }

    }

    @Override
    public Object deserialize(@Nullable byte[] source) throws SerializationException {
        return this.deserialize(source, Object.class);
    }

    @Nullable
    public <T> T deserialize(@Nullable byte[] source, Class<T> type) throws SerializationException {
        Assert.notNull(type, "Deserialization type must not be null! Please provide Object.class to make use of Jackson2 default typing.");
        if (ObjectUtil.isNull(source)) {
            return null;
        } else {
            try {
                return this.mapper.readValue(source, type);
            } catch (Exception var4) {
                throw new SerializationException("Could not read JSON: " + var4.getMessage(), var4);
            }
        }
    }

    private static class NullValueSerializer extends StdSerializer<NullValue> {
        private static final long serialVersionUID = 1999052150548658808L;
        private final String classIdentifier;

        NullValueSerializer(@Nullable String classIdentifier) {
            super(NullValue.class);
            this.classIdentifier = StringUtils.hasText(classIdentifier) ? classIdentifier : "@class";
        }

        public void serialize(NullValue value, JsonGenerator jgen, SerializerProvider provider) throws IOException {
            jgen.writeStartObject();
            jgen.writeStringField(this.classIdentifier, NullValue.class.getName());
            jgen.writeEndObject();
        }
    }
}

package com.yolo.yoloblog.configuration;


import com.yolo.yoloblog.framework.engine.serializer.CustomerGenericJackson2JsonRedisSerializer;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;
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.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.connection.lettuce.LettucePoolingClientConfiguration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfiguration{

    //配置redis的過期時(shí)間
    private static final StringRedisSerializer STRING_SERIALIZER = new StringRedisSerializer();
//    private static final GenericJackson2JsonRedisSerializer JSON_SERIALIZER = new GenericJackson2JsonRedisSerializer();

    @Autowired
    private CustomerGenericJackson2JsonRedisSerializer customerGenericJackson2JsonRedisSerializer;


    @Bean
    public GenericObjectPoolConfig poolConfig(){
        GenericObjectPoolConfig poolConfig = new GenericObjectPoolConfig();
        //控制一個(gè)pool可分配多少個(gè)jedis實(shí)例
        poolConfig.setMaxTotal(500);
        //最大空閑數(shù)
        poolConfig.setMaxIdle(200);
        //每次釋放連接的最大數(shù)目，默認(rèn)是3
        poolConfig.setNumTestsPerEvictionRun(1024);
        //逐出掃描的時(shí)間間隔(毫秒) 如果為負(fù)數(shù),則不運(yùn)行逐出線程, 默認(rèn)-1
        poolConfig.setTimeBetweenEvictionRunsMillis(30000);
        //連接的最小空閑時(shí)間 默認(rèn)1800000毫秒(30分鐘)
        poolConfig.setMinEvictableIdleTimeMillis(-1);
        poolConfig.setSoftMinEvictableIdleTimeMillis(10000);
        //最大建立連接等待時(shí)間。如果超過此時(shí)間將接到異常。設(shè)為-1表示無限制。
        poolConfig.setMaxWaitMillis(1500);
        poolConfig.setTestOnBorrow(true);
        poolConfig.setTestWhileIdle(true);
        poolConfig.setTestOnReturn(false);
        poolConfig.setJmxEnabled(true);
        poolConfig.setBlockWhenExhausted(false);
        return poolConfig;
    }

    @Bean
    public RedisTemplate<String, Object> redisTemplate() {
        RedisStandaloneConfiguration configuration = new RedisStandaloneConfiguration();
        configuration.setDatabase(0);
        configuration.setHostName("127.0.0.1");
        configuration.setPassword("123456");
        configuration.setPort(6380);
        return createRedisTemplate(creatFactory(configuration));
    }

    @Bean
    public RedisTemplate<Object, Object> redisTemplateDB0() {
        RedisStandaloneConfiguration configuration = new RedisStandaloneConfiguration();
        configuration.setDatabase(0);
        configuration.setHostName("127.0.0.1");
        configuration.setPassword("123456");
        configuration.setPort(6380);
        return createRedisTemplate(creatFactory(configuration));
    }

    private RedisTemplate createRedisTemplate(LettuceConnectionFactory lettuceConnectionFactory){
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(lettuceConnectionFactory);
        //key的序列方式
        template.setKeySerializer(STRING_SERIALIZER);
        //hashKey的序列方式
        template.setHashKeySerializer(STRING_SERIALIZER);
        //value的序列方式
        template.setValueSerializer(customerGenericJackson2JsonRedisSerializer);
        //value hashmap序列化
        template.setHashValueSerializer(customerGenericJackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

    private LettuceConnectionFactory creatFactory(RedisStandaloneConfiguration configuration){
        LettucePoolingClientConfiguration.LettucePoolingClientConfigurationBuilder builder = LettucePoolingClientConfiguration.builder();
        builder.poolConfig(poolConfig());
        LettuceConnectionFactory connectionFactory = new LettuceConnectionFactory(configuration, builder.build());
        connectionFactory.afterPropertiesSet();
        return connectionFactory;
    }
}

package com.yolo.yoloblog.util;

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;

import javax.annotation.Resource;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;

@Component
public class RedisUtil {

    @Resource
    private RedisTemplate<Object, Object> redisTemplateDB0;

    public void setRedisTemplate(RedisTemplate<Object, Object> redisTemplate) {
        this.redisTemplateDB0 = redisTemplate;
    }
    //=============================common============================
    /**
     * 指定緩存失效時(shí)間
     * @param key 鍵
     * @param time 時(shí)間(秒)
     * @return
     */
    public boolean expire(String key,long time){
        try {
            if(time>0){
                redisTemplateDB0.expire(key, time, TimeUnit.SECONDS);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 根據(jù)key 獲取過期時(shí)間
     * @param key 鍵 不能為null
     * @return 時(shí)間(秒) 返回0代表為永久有效
     */
    public long getExpire(String key){
        return redisTemplateDB0.getExpire(key,TimeUnit.SECONDS);
    }

    /**
     * 判斷key是否存在
     * @param key 鍵
     * @return true 存在 false不存在
     */
    public boolean hasKey(String key){
        try {
            return redisTemplateDB0.hasKey(key);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 刪除緩存
     * @param key 可以傳一個(gè)值 或多個(gè)
     */
    @SuppressWarnings("unchecked")
    public void del(String ... key){
        if(key!=null&&key.length>0){
            if(key.length==1){
                redisTemplateDB0.delete(key[0]);
            }else{
                redisTemplateDB0.delete(CollectionUtils.arrayToList(key));
            }
        }
    }

    //============================String=============================
    /**
     * 普通緩存獲取
     * @param key 鍵
     * @return 值
     */
    public Object get(String key){
        return key==null?null:redisTemplateDB0.opsForValue().get(key);
    }

    /**
     * 普通緩存放入
     * @param key 鍵
     * @param value 值
     * @return true成功 false失敗
     */
    public boolean set(String key,Object value) {
        try {
            redisTemplateDB0.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }

    }

    /**
     * 普通緩存放入并設(shè)置時(shí)間
     * @param key 鍵
     * @param value 值
     * @param time 時(shí)間(秒) time要大于0 如果time小于等于0 將設(shè)置無限期
     * @return true成功 false 失敗
     */
    public boolean set(String key,Object value,long time){
        try {
            if(time>0){
                redisTemplateDB0.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            }else{
                set(key, value);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 遞增
     * @param key 鍵
     * @param delta 要增加幾(大于0)
     * @return
     */
    public long incr(String key, long delta){
        if(delta<0){
            throw new RuntimeException("遞增因子必須大于0");
        }
        return redisTemplateDB0.opsForValue().increment(key, delta);
    }

    /**
     * 遞減
     * @param key 鍵
     * @param delta 要減少幾(小于0)
     * @return
     */
    public long decr(String key, long delta){
        if(delta<0){
            throw new RuntimeException("遞減因子必須大于0");
        }
        return redisTemplateDB0.opsForValue().increment(key, -delta);
    }

    //================================Map=================================
    /**
     * HashGet
     * @param key 鍵 不能為null
     * @param item 項(xiàng) 不能為null
     * @return 值
     */
    public Object hget(String key,String item){
        return redisTemplateDB0.opsForHash().get(key, item);
    }

    /**
     * 獲取hashKey對(duì)應(yīng)的所有鍵值
     * @param key 鍵
     * @return 對(duì)應(yīng)的多個(gè)鍵值
     */
    public Map<Object,Object> hmget(String key){
        return redisTemplateDB0.opsForHash().entries(key);
    }

    /**
     * HashSet
     * @param key 鍵
     * @param map 對(duì)應(yīng)多個(gè)鍵值
     * @return true 成功 false 失敗
     */
    public boolean hmset(String key, Map<String,Object> map){
        try {
            redisTemplateDB0.opsForHash().putAll(key, map);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * HashSet 并設(shè)置時(shí)間
     * @param key 鍵
     * @param map 對(duì)應(yīng)多個(gè)鍵值
     * @param time 時(shí)間(秒)
     * @return true成功 false失敗
     */
    public boolean hmset(String key, Map<String,Object> map, long time){
        try {
            redisTemplateDB0.opsForHash().putAll(key, map);
            if(time>0){
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 向一張hash表中放入數(shù)據(jù),如果不存在將創(chuàng)建
     * @param key 鍵
     * @param item 項(xiàng)
     * @param value 值
     * @return true 成功 false失敗
     */
    public boolean hset(String key,String item,Object value) {
        try {
            redisTemplateDB0.opsForHash().put(key, item, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 向一張hash表中放入數(shù)據(jù),如果不存在將創(chuàng)建
     * @param key 鍵
     * @param item 項(xiàng)
     * @param value 值
     * @param time 時(shí)間(秒)  注意:如果已存在的hash表有時(shí)間,這里將會(huì)替換原有的時(shí)間
     * @return true 成功 false失敗
     */
    public boolean hset(String key,String item,Object value,long time) {
        try {
            redisTemplateDB0.opsForHash().put(key, item, value);
            if(time>0){
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 刪除hash表中的值
     * @param key 鍵 不能為null
     * @param item 項(xiàng) 可以使多個(gè) 不能為null
     */
    public void hdel(String key, Object... item){
        redisTemplateDB0.opsForHash().delete(key,item);
    }

    /**
     * 判斷hash表中是否有該項(xiàng)的值
     * @param key 鍵 不能為null
     * @param item 項(xiàng) 不能為null
     * @return true 存在 false不存在
     */
    public boolean hHasKey(String key, String item){
        return redisTemplateDB0.opsForHash().hasKey(key, item);
    }

    /**
     * hash遞增 如果不存在,就會(huì)創(chuàng)建一個(gè) 并把新增后的值返回
     * @param key 鍵
     * @param item 項(xiàng)
     * @param by 要增加幾(大于0)
     * @return
     */
    public long hincr(String key, String item,long by){
        return redisTemplateDB0.opsForHash().increment(key, item, by);
    }

    /**
     * hash遞減
     * @param key 鍵
     * @param item 項(xiàng)
     * @param by 要減少記(小于0)
     * @return
     */
    public double hdecr(String key, String item,double by){
        return redisTemplateDB0.opsForHash().increment(key, item,-by);
    }

    //============================set=============================
    /**
     * 根據(jù)key獲取Set中的所有值
     * @param key 鍵
     * @return
     */
    public Set<Object> sGet(String key){
        try {
            return redisTemplateDB0.opsForSet().members(key);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 根據(jù)value從一個(gè)set中查詢,是否存在
     * @param key 鍵
     * @param value 值
     * @return true 存在 false不存在
     */
    public boolean sHasKey(String key,Object value){
        try {
            return redisTemplateDB0.opsForSet().isMember(key, value);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 將數(shù)據(jù)放入set緩存
     * @param key 鍵
     * @param values 值 可以是多個(gè)
     * @return 成功個(gè)數(shù)
     */
    public long sSet(String key, Object...values) {
        try {
            return redisTemplateDB0.opsForSet().add(key, values);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    /**
     * 將set數(shù)據(jù)放入緩存
     * @param key 鍵
     * @param time 時(shí)間(秒)
     * @param values 值 可以是多個(gè)
     * @return 成功個(gè)數(shù)
     */
    public long sSetAndTime(String key,long time,Object...values) {
        try {
            Long count = redisTemplateDB0.opsForSet().add(key, values);
            if(time>0) {
                expire(key, time);
            }
            return count;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    /**
     * 獲取set緩存的長(zhǎng)度
     * @param key 鍵
     * @return
     */
    public long sGetSetSize(String key){
        try {
            return redisTemplateDB0.opsForSet().size(key);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    /**
     * 移除值為value的
     * @param key 鍵
     * @param values 值 可以是多個(gè)
     * @return 移除的個(gè)數(shù)
     */
    public long setRemove(String key, Object ...values) {
        try {
            Long count = redisTemplateDB0.opsForSet().remove(key, values);
            return count;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
    //===============================list=================================

    /**
     * 獲取list緩存的內(nèi)容
     * @param key 鍵
     * @param start 開始
     * @param end 結(jié)束  0 到 -1代表所有值
     * @return
     */
    public List<Object> lGet(String key,long start, long end){
        try {
            return redisTemplateDB0.opsForList().range(key, start, end);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 獲取list緩存的長(zhǎng)度
     * @param key 鍵
     * @return
     */
    public long lGetListSize(String key){
        try {
            return redisTemplateDB0.opsForList().size(key);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }

    /**
     * 通過索引 獲取list中的值
     * @param key 鍵
     * @param index 索引  index>=0時(shí)， 0 表頭，1 第二個(gè)元素，依次類推；index<0時(shí)，-1，表尾，-2倒數(shù)第二個(gè)元素，依次類推
     * @return
     */
    public Object lGetIndex(String key,long index){
        try {
            return redisTemplateDB0.opsForList().index(key, index);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 將list放入緩存
     * @param key 鍵
     * @param value 值
     * @return
     */
    public boolean lSet(String key, Object value) {
        try {
            redisTemplateDB0.opsForList().rightPush(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 將list放入緩存
     * @param key 鍵
     * @param value 值
     * @param time 時(shí)間(秒)
     * @return
     */
    public boolean lSet(String key, Object value, long time) {
        try {
            redisTemplateDB0.opsForList().rightPush(key, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 將list放入緩存
     * @param key 鍵
     * @param value 值
     * @return
     */
    public boolean lSet(String key, List<Object> value) {
        try {
            redisTemplateDB0.opsForList().rightPushAll(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 將list放入緩存
     * @param key 鍵
     * @param value 值
     * @param time 時(shí)間(秒)
     * @return
     */
    public boolean lSet(String key, List<Object> value, long time) {
        try {
            redisTemplateDB0.opsForList().rightPushAll(key, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 根據(jù)索引修改list中的某條數(shù)據(jù)
     * @param key 鍵
     * @param index 索引
     * @param value 值
     * @return
     */
    public boolean lUpdateIndex(String key, long index,Object value) {
        try {
            redisTemplateDB0.opsForList().set(key, index, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 移除N個(gè)值為value
     * @param key 鍵
     * @param count 移除多少個(gè)
     * @param value 值
     * @return 移除的個(gè)數(shù)
     */
    public long lRemove(String key,long count,Object value) {
        try {
            Long remove = redisTemplateDB0.opsForList().remove(key, count, value);
            return remove;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
}