Redis与SpringBoot整合,有这样一个就够了

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  • Post category:其他




Redis与SpringBoot整合,有这样一个就够了

  • Maven引入
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-redis -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-redis</artifactId>
		</dependency>
  • application配置Redis,根据实际条件进行自己的配置
 redis:
    host: localhost
    database: 0
    port: 6379
    password: 



confing 配置开启

package com.chenhui.config;

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.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.ListOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.SetOperations;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.data.redis.core.ZSetOperations;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {

	@Bean(name="redisTemplateCustomize")
	public RedisTemplate<String, Object> redisTemplateCustomize(RedisConnectionFactory factory) {
		@SuppressWarnings({ "unchecked", "rawtypes" })
		RedisTemplate<String, Object> template = new RedisTemplate();

		// 配置连接工厂
		template.setConnectionFactory(factory);

		// 使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值(默认使用JDK的序列化方式)
		@SuppressWarnings({ "rawtypes", "unchecked" })
		Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);

		ObjectMapper om = new ObjectMapper();
		// 指定要序列化的域,field,get和set,以及修饰符范围,ANY是都有包括private和public
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		// 指定序列化输入的类型,类必须是非final修饰的,final修饰的类,比如String,Integer等会跑出异常
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jacksonSeial.setObjectMapper(om);

		// 值采用json序列化
		template.setValueSerializer(jacksonSeial);
		// 使用StringRedisSerializer来序列化和反序列化redis的key值
		template.setKeySerializer(new StringRedisSerializer());

		// 设置hash key 和value序列化模式
		template.setHashKeySerializer(new StringRedisSerializer());
		template.setHashValueSerializer(jacksonSeial);
		template.afterPropertiesSet();

		return template;
	}

	/**
	 * 对redis五种数据类型进行操作 string、hash、list、set、zset
	 */

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

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

	@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();
	}

}



util 定义一个工具类,好后面自己的调用

package com.chenhui.util;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.stereotype.Component;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;

@SuppressWarnings(value = { "unchecked", "rawtypes" })
@Component
public class RedisUtil {
	public RedisTemplate redisTemplate;
	
	@Autowired
	public RedisUtil(RedisTemplate<String, Object> redisTemplate) {
		Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);

		ObjectMapper om = new ObjectMapper();
		// 指定要序列化的域,field,get和set,以及修饰符范围,ANY是都有包括private和public
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		// 指定序列化输入的类型,类必须是非final修饰的,final修饰的类,比如String,Integer等会跑出异常
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jacksonSeial.setObjectMapper(om);

		// 值采用json序列化
		redisTemplate.setValueSerializer(jacksonSeial);
		// 使用StringRedisSerializer来序列化和反序列化redis的key值
		redisTemplate.setKeySerializer(new StringRedisSerializer());

		// 设置hash key 和value序列化模式
		redisTemplate.setHashKeySerializer(new StringRedisSerializer());
		redisTemplate.setHashValueSerializer(jacksonSeial);
	    this.redisTemplate = redisTemplate;
	}

	// ============指定失效时间、根据key获取过期时间、判断key是否存在、删除操作 =============
	/**
	 * 给 key 指定失效时间
	 * @param key  键
	 * @param time 过期时间(秒)
	 * @return
	 */
	public boolean expire(String key, long time) {
		try {
			if (time > 0) {
				redisTemplate.expire(key, time, TimeUnit.SECONDS);
			}
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}
	
	/**
	 * 根据key获取过期时间
	 * @param key 键
	 * @return
	 */
	public long getExpire(String key) {
		return redisTemplate.getExpire(key);
	}
	
	/**
	 * 判断key是否存在
	 * @param key 键
	 * @return
	 */
	public boolean hasKey(String key) {
		try {
			return redisTemplate.hasKey(key);
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}
	
	/**
	 * 删除 key 可以是多个
	 * @param key
	 */
	public void del(String... key) {
		if (key != null && key.length > 0) {
			if (key.length == 1) {
				redisTemplate.delete(key[0]);
			} else {
				redisTemplate.delete(org.springframework.util.CollectionUtils.arrayToList(key));
			}
		}
	}

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

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

	public boolean set(String key, Object value, long time) {
		try {
			if (time > 0) {
				redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
			} else {
				redisTemplate.opsForValue().set(key, value);
			}
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}

	public Long incr(String key, long delta) {
		if (delta > 0) {
			throw new RuntimeException("递增因子要大于0");
		}
		return redisTemplate.opsForValue().increment(key, delta);
	}

	public Long dncr(String key, long delta) {
		if (delta > 0) {
			throw new RuntimeException("递减因子要大于0");
		}
		return redisTemplate.opsForValue().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 redisTemplate.opsForHash().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<Object, Object> hmget(String key) {
		return redisTemplate.opsForHash().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 {
			redisTemplate.opsForHash().putAll(key, map);
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}

	/**
	 * HashSet 并设置时间
	 * 
	 * @param key 键
	 * @param map 对应多个键值
	 * @param time key过期时间(秒)
	 * @return true成功 false失败
	 */
	public boolean hmset(String key, Map<String, Object> map, long time) {
		try {
			redisTemplate.opsForHash().putAll(key, map);
			if (time > 0) {
				expire(key, time);
			}
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			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 {
			redisTemplate.opsForHash().put(key, item, value);
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			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 key过期时间(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 {
			redisTemplate.opsForHash().put(key, item, value);
			if (time > 0) {
				expire(key, time);
			}
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			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) {
		redisTemplate.opsForHash().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 redisTemplate.opsForHash().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 redisTemplate.opsForHash().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 redisTemplate.opsForHash().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 redisTemplate.opsForSet().members(key);
		} catch (Exception e) {
			e.printStackTrace();
			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 redisTemplate.opsForSet().isMember(key, value);
		} catch (Exception e) {
			e.printStackTrace();
			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 redisTemplate.opsForSet().add(key, values);
		} catch (Exception e) {
			e.printStackTrace();
			return 0;
		}
	}

	/**
	 * 将set数据放入缓存
	 * 
	 * @param key 键
	 * @param time  key过期时间(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 = redisTemplate.opsForSet().add(key, values);
			if (time > 0) {
				expire(key, time);
			}
			return count;
		} catch (Exception e) {
			e.printStackTrace();
			return 0;
		}
	}

	/**
	 * 获取set缓存的长度
	 * 
	 * @param key  键
	 * @return
	 */
	public long sGetSetSize(String key) {
		try {
			return redisTemplate.opsForSet().size(key);
		} catch (Exception e) {
			e.printStackTrace();
			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 = redisTemplate.opsForSet().remove(key, values);
			return count;
		} catch (Exception e) {
			e.printStackTrace();
			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 redisTemplate.opsForList().range(key, start, end);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	/**
	 * 获取list缓存的长度
	 * 
	 * @param key 键
	 * @return
	 */
	public long lGetListSize(String key) {
		try {
			return redisTemplate.opsForList().size(key);
		} catch (Exception e) {
			e.printStackTrace();
			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 redisTemplate.opsForList().index(key, index);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

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

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

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

	/**
	 * 将list放入缓存
	 * 
	 * @param key  键
	 * @param value 值
	 * @param time  key过期时间(秒)
	 * @return
	 */
	public boolean lSet(String key, List<Object> value, long time) {
		try {
			redisTemplate.opsForList().rightPushAll(key, value);
			if (time > 0) {
				expire(key, time);
			}
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			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 {
			redisTemplate.opsForList().set(key, index, value);
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			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 = redisTemplate.opsForList().remove(key, count, value);
			return remove;
		} catch (Exception e) {
			e.printStackTrace();
			return 0;
		}
	}

}



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