springboot - 整合redis - IPS99技术分享

标签：return springboot redis param 整合 value key public String

1.引入pom依赖

<!-- redis -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- fastjson 序列化器 -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.83</version>
</dependency>

2.构建redis配置类

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.*;
import org.springframework.data.redis.listener.RedisMessageListenerContainer;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * redis配置
 * @author wlw
 * @date 2023/9/2
 */
@Configuration
@RequiredArgsConstructor
public class RedisConfig {
    private final RedisConnectionFactory factory;
    @Bean
    public RedisTemplate<String, Object> redisTemplate() {
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(factory);
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(jackson2JsonRedisSerializer);
        template.setHashKeySerializer(jackson2JsonRedisSerializer);
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.setDefaultSerializer(new StringRedisSerializer());
        template.afterPropertiesSet();
        return template;
    }

    /**
     * 监听redis的过期事件
     */
    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }

    @Bean
    public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForHash();
    }

    @Bean
    public ValueOperations<String, String> valueOperations(RedisTemplate<String, String> redisTemplate) {
        return redisTemplate.opsForValue();
    }

    @Bean
    public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForList();
    }

    @Bean
    public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForSet();
    }

    @Bean
    public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForZSet();
    }
}
3.构建redis类，对各种数据类型进行封住

package com.ccx.third;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.google.common.collect.Lists;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;

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

/**
 * redis 操作类
 * @author wlw
 * @date 2023/9/3
 */
@Component
@Slf4j
public class RedisService {
    @Autowired
    public RedisTemplate<String, Object> redisTemplate;

    @Autowired
    public ValueOperations<String, String> redisValueOperations;

    @Autowired
    public HashOperations<String, String, Object> redisHashOperations;

    @Autowired
    public ListOperations<String, Object> redisListOperations;

    @Autowired
    public SetOperations<String, Object> redisSetOperations;

    /**
     * 指定缓存失效时间
     *
     * @param key 键
     * @param time 时间(秒)
     * @return
     */
    public boolean expire(String key, long time) {
        try {
            if (time > 0) {
                redisTemplate.expire(key, time, TimeUnit.SECONDS);
            }
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }
    /**
     * 根据key 获取过期时间
     *
     * @param key 键 不能为null
     * @return 时间(秒) 返回0代表为永久有效
     */
    public long getExpire(String key) {
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }
    /**
     * 判断key是否存在
     *
     * @param key 键
     * @return true 存在 false不存在
     */
    public boolean hasKey(String key) {
        try {
            return redisTemplate.hasKey(key);
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }
    /**
     * 删除缓存
     *
     * @param key 可以传一个值 或多个
     */
    @SuppressWarnings("unchecked")
    public void del(String... key) {
        if (key != null && key.length > 0) {
            if (key.length == 1) {
                redisTemplate.delete(key[0]);
            } else {
                redisTemplate.delete(CollectionUtils.arrayToList(key));
            }
        }
    }
    //============================String=============================
    /**
     * 普通缓存获取
     *
     * @param key 键
     * @return 值
     */
    public String get(String key) {
        return key == null ? null : redisValueOperations.get(key);
    }
    public <T> T getObject(String key, Class<T> clazz) {
        Object json = this.get(key);
        if (json == null) {
            return null;
        }
        T obj = JSON.parseObject(json.toString(), clazz);
        return obj;
    }
    public <T> List<T> getList(String key, Class<T> clz) {
        Object json = this.get(key);
        if (json == null) {
            return Lists.newArrayList();
        }
        List<T> list = JSONObject.parseArray(json.toString(), clz);
        return list;
    }
    /**
     * 普通缓存放入
     *
     * @param key 键
     * @param value 值
     * @return true成功 false失败
     */
    public boolean set(String key, String value) {
        try {
            redisValueOperations.set(key, value);
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }
    /**
     * 普通缓存放入并设置时间
     *
     * @param key 键
     * @param value 值
     * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
     * @return true成功 false 失败
     */
    public boolean set(String key, String value, long time) {
        try {
            if (time > 0) {
                redisValueOperations.set(key, value, time, TimeUnit.SECONDS);
            } else {
                set(key, value);
            }
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }
    /**
     * 递增
     *
     * @param key 键
     * @param delta 要增加几(大于0)
     * @return
     */
    public long incr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递增因子必须大于0");
        }
        return redisValueOperations.increment(key, delta);
    }

    /**
     * 递减
     *
     * @param key 键
     * @param delta 要减少几(小于0)
     * @return
     */
    public long decr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递减因子必须大于0");
        }
        return redisValueOperations.increment(key, - delta);
    }
//================================Map=================================
    /**
     * HashGet
     *
     * @param key 键 不能为null
     * @param item 项 不能为null
     * @return 值
     */
    public Object hget(String key, String item) {
        return redisHashOperations.get(key, item);
    }

    /**
     * 获取hashKey对应的所有键值
     *
     * @param key 键
     * @return 对应的多个键值
     */
    public Map<String, Object> hmget(String key) {
        return redisHashOperations.entries(key);
    }

    /**
     * HashSet
     *
     * @param key 键
     * @param map 对应多个键值
     * @return true 成功 false 失败
     */
    public boolean hmset(String key, Map<String, Object> map) {
        try {
            redisHashOperations.putAll(key, map);
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * HashSet 并设置时间
     *
     * @param key 键
     * @param map 对应多个键值
     * @param time 时间(秒)
     * @return true成功 false失败
     */
    public boolean hmset(String key, Map<String, Object> map, long time) {
        try {
            redisHashOperations.putAll(key, map);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 向一张hash表中放入数据,如果不存在将创建
     *
     * @param key 键
     * @param item 项
     * @param value 值
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value) {
        try {
            redisHashOperations.put(key, item, value);
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 向一张hash表中放入数据,如果不存在将创建
     *
     * @param key 键
     * @param item 项
     * @param value 值
     * @param time 时间(秒)  注意:如果已存在的hash表有时间,这里将会替换原有的时间
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value, long time) {
        try {
            redisHashOperations.put(key, item, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 删除hash表中的值
     *
     * @param key 键 不能为null
     * @param item 项 可以使多个 不能为null
     */
    public void hdel(String key, Object... item) {
        redisHashOperations.delete(key, item);
    }

    /**
     * 判断hash表中是否有该项的值
     *
     * @param key 键 不能为null
     * @param item 项 不能为null
     * @return true 存在 false不存在
     */
    public boolean hHasKey(String key, String item) {
        return redisHashOperations.hasKey(key, item);
    }

    /**
     * hash递增 如果不存在,就会创建一个 并把新增后的值返回
     *
     * @param key 键
     * @param item 项
     * @param by 要增加几(大于0)
     * @return
     */
    public double hincr(String key, String item, double by) {
        return redisHashOperations.increment(key, item, by);
    }

    /**
     * hash递减
     *
     * @param key 键
     * @param item 项
     * @param by 要减少记(小于0)
     * @return
     */
    public double hdecr(String key, String item, double by) {
        return redisHashOperations.increment(key, item, - by);
    }

    //============================set=============================
    /**
     * 根据key获取Set中的所有值
     *
     * @param key 键
     * @return
     */
    public Set<Object> sGet(String key) {
        try {
            return redisSetOperations.members(key);
        } catch (Exception e) {
            log.error("", e);
            return null;
        }
    }

    /**
     * 根据value从一个set中查询,是否存在
     *
     * @param key 键
     * @param value 值
     * @return true 存在 false不存在
     */
    public boolean sHasKey(String key, Object value) {
        try {
            return redisSetOperations.isMember(key, value);
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 将数据放入set缓存
     *
     * @param key 键
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSet(String key, Object... values) {
        try {
            return redisSetOperations.add(key, values);
        } catch (Exception e) {
            log.error("", e);
            return 0;
        }
    }

    /**
     * 将set数据放入缓存
     *
     * @param key 键
     * @param time 时间(秒)
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSetAndTime(String key, long time, Object... values) {
        try {
            Long count = redisSetOperations.add(key, values);
            if (time > 0) {
                expire(key, time);
            }
            return count;
        } catch (Exception e) {
            log.error("", e);
            return 0;
        }
    }

    /**
     * 获取set缓存的长度
     *
     * @param key 键
     * @return
     */
    public long sGetSetSize(String key) {
        try {
            return redisSetOperations.size(key);
        } catch (Exception e) {
            log.error("", e);
            return 0;
        }
    }

    /**
     * 移除值为value的
     *
     * @param key 键
     * @param values 值 可以是多个
     * @return 移除的个数
     */
    public long setRemove(String key, Object... values) {
        try {
            Long count = redisSetOperations.remove(key, values);
            return count;
        } catch (Exception e) {
            log.error("", e);
            return 0;
        }
    }
//===============================list=================================

    /**
     * 获取list缓存的内容
     *
     * @param key 键
     * @param start 开始
     * @param end 结束  0 到 -1代表所有值
     * @return
     */
    public List<Object> lGet(String key, long start, long end) {
        try {
            return redisListOperations.range(key, start, end);
        } catch (Exception e) {
            log.error("", e);
            return null;
        }
    }

    /**
     * 获取list缓存的所有内容
     *
     * @param key
     * @return
     */
    public List<Object> lGetAll(String key) {
        return lGet(key, 0, - 1);
    }

    /**
     * 获取list缓存的长度
     *
     * @param key 键
     * @return
     */
    public long lGetListSize(String key) {
        try {
            return redisListOperations.size(key);
        } catch (Exception e) {
            log.error("", e);
            return 0;
        }
    }

    /**
     * 通过索引 获取list中的值
     *
     * @param key 键
     * @param index 索引  index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推
     * @return
     */
    public Object lGetIndex(String key, long index) {
        try {
            return redisListOperations.index(key, index);
        } catch (Exception e) {
            log.error("", e);
            return null;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key 键
     * @param value 值
     * @return
     */
    public boolean lSet(String key, Object value) {
        try {
            redisListOperations.rightPush(key, value);
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key 键
     * @param value 值
     * @param time 时间(秒)
     * @return
     */
    public boolean lSet(String key, Object value, long time) {
        try {
            redisListOperations.rightPush(key, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key 键
     * @param value 值
     * @return
     */
    public boolean lSet(String key, List<Object> value) {
        try {
            redisListOperations.rightPushAll(key, value);
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 将list放入缓存
     *
     * @param key 键
     * @param value 值
     * @param time 时间(秒)
     * @return
     */
    public boolean lSet(String key, List<Object> value, long time) {
        try {
            redisListOperations.rightPushAll(key, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 根据索引修改list中的某条数据
     *
     * @param key 键
     * @param index 索引
     * @param value 值
     * @return
     */
    public boolean lUpdateIndex(String key, long index, Object value) {
        try {
            redisListOperations.set(key, index, value);
            return true;
        } catch (Exception e) {
            log.error("", e);
            return false;
        }
    }

    /**
     * 移除N个值为value
     *
     * @param key 键
     * @param count 移除多少个
     * @param value 值
     * @return 移除的个数
     */
    public long lRemove(String key, long count, Object value) {
        try {
            Long remove = redisListOperations.remove(key, count, value);
            return remove;
        } catch (Exception e) {
            log.error("", e);
            return 0;
        }
    }
}
4.测试

@RequiredArgsConstructor

private final RedisService redisService;

标签：return,springboot,redis,param,整合,value,key,public,String
From： https://www.cnblogs.com/wlwtop/p/17674862.html

springboot - 整合redis

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