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me.youm.frame.redis.service.RedisService Maven / Gradle / Ivy
package me.youm.frame.redis.service;
import lombok.extern.slf4j.Slf4j;
import me.youm.frame.redis.util.RedisLockUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.TimeoutUtils;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationUtils;
import org.springframework.util.Assert;
import java.time.Duration;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* 定义常用的 Redis操作
*
* @author youta
**/
@Slf4j
public class RedisService {
@Autowired
@SuppressWarnings("all")
private RedisTemplate redisTemplate;
@Autowired
private RedisLockUtil redisLockUtil;
/**
* 指定缓存失效时间
*
* @param key 键
* @param time 时间(秒)
* @return Boolean
*/
public Boolean expire(String key, Long time) {
try {
if (time > 0) {
redisTemplate.expire(key, time, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return false;
}
}
/**
* 添加到带有 过期时间的 缓存
*
* @param key redis主键
* @param value 值
* @param time 过期时间
* @param timeUnit 过期时间单位
*/
public void setExpire(final String key, final Object value, final long time, final TimeUnit timeUnit) {
redisTemplate.opsForValue().set(key, value, time, timeUnit);
}
public void setExpire(final String key, final Object value, final long time, final TimeUnit timeUnit, RedisSerializer valueSerializer) {
byte[] rawKey = rawKey(key);
byte[] rawValue = rawValue(value, valueSerializer);
redisTemplate.execute(new RedisCallback() {
@Override
public Object doInRedis(RedisConnection connection) throws DataAccessException {
potentiallyUsePsetEx(connection);
return null;
}
public void potentiallyUsePsetEx(RedisConnection connection) {
if (!TimeUnit.MILLISECONDS.equals(timeUnit) || !failsafeInvokePsetEx(connection)) {
connection.setEx(rawKey, TimeoutUtils.toSeconds(time, timeUnit), rawValue);
}
}
private boolean failsafeInvokePsetEx(RedisConnection connection) {
boolean failed = false;
try {
connection.pSetEx(rawKey, time, rawValue);
} catch (UnsupportedOperationException e) {
failed = true;
}
return !failed;
}
}, true);
}
/**
* 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("Exception: {}", e.getMessage());
return false;
}
}
/**
* 删除缓存
*
* @param key 可以传一个值 或多个
*/
public void del(String... key) {
if (key != null && key.length > 0) {
if (key.length == 1) {
redisTemplate.delete(key[0]);
} else {
redisTemplate.delete(Arrays.asList(key));
}
}
}
/**
* 普通缓存获取
*
* @param key 键
* @return 值
*/
public Object get(String key) {
return key == null ? null : redisTemplate.opsForValue().get(key);
}
/**
* 根据key获取对象
*
* @param key the key
* @param valueSerializer 序列化
* @return the string
*/
public Object get(final String key, RedisSerializer valueSerializer) {
byte[] rawKey = rawKey(key);
return redisTemplate.execute(connection -> deserializeValue(connection.get(rawKey), valueSerializer), true);
}
/**
* 普通缓存放入
*
* @param key 键
* @param value 值
* @return true成功 false失败
*/
public Boolean set(String key, Object value) {
try {
redisTemplate.opsForValue().set(key, value);
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
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, Object value, Long time) {
try {
if (time > 0) {
redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
} else {
set(key, value);
}
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return false;
}
}
/**
* 普通缓存放入并设置时间
*
* @param key 键
* @param value 值
* @return true成功 false 失败
*/
public Boolean set(String key, Object value, Duration timeout) {
try {
Assert.notNull(timeout, "Timeout must not be null!");
if (TimeoutUtils.hasMillis(timeout)) {
redisTemplate.opsForValue().set(key, value, timeout.toMillis(), TimeUnit.MILLISECONDS);
} else {
redisTemplate.opsForValue().set(key, value, timeout.getSeconds(), TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return false;
}
}
/**
* 递增
*
* @param key 键
* @param delta 要增加几(大于0)
* @return Long
*/
public Long incr(String key, Long delta) {
if (delta < 0) {
throw new RuntimeException("递增因子必须大于0");
}
return redisTemplate.opsForValue().increment(key, delta);
}
/**
* 递减
*
* @param key 键
* @param delta 要减少几(小于0)
* @return Long
*/
public Long decr(String key, Long delta) {
if (delta < 0) {
throw new RuntimeException("递减因子必须大于0");
}
return redisTemplate.opsForValue().increment(key, -delta);
}
/**
* 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 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 map) {
try {
redisTemplate.opsForHash().putAll(key, map);
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
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 map, Long time) {
try {
redisTemplate.opsForHash().putAll(key, map);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
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) {
log.error("Exception: {}", e.getMessage());
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 {
redisTemplate.opsForHash().put(key, item, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
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 Double
*/
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 Double
*/
public Double hdecr(String key, String item, Double by) {
return redisTemplate.opsForHash().increment(key, item, -by);
}
/**
* 根据 key获取 Set中的所有值
*
* @param key 键
* @return Set
*/
public Set sGet(String key) {
try {
return redisTemplate.opsForSet().members(key);
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
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) {
log.error("Exception: {}", e.getMessage());
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) {
log.error("Exception: {}", e.getMessage());
return 0L;
}
}
/**
* 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 = redisTemplate.opsForSet().add(key, values);
if (time > 0) {
expire(key, time);
}
return count;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return 0L;
}
}
/**
* 获取set缓存的长度
*
* @param key 键
* @return Long
*/
public Long sGetSetSize(String key) {
try {
return redisTemplate.opsForSet().size(key);
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return 0L;
}
}
/**
* 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 {
return redisTemplate.opsForSet().remove(key, values);
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return 0L;
}
}
/**
* 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 List
*/
public List lGet(String key, Long start, Long end) {
try {
return redisTemplate.opsForList().range(key, start, end);
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return null;
}
}
/**
* 获取list缓存的长度
*
* @param key 键
* @return Long
*/
public Long lGetListSize(String key) {
try {
return redisTemplate.opsForList().size(key);
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return 0L;
}
}
/**
* 通过索引 获取list中的值
*
* @param key 键
* @return Object
*/
public Object lGetIndex(String key, Long index) {
try {
return redisTemplate.opsForList().index(key, index);
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return null;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @return Boolean
*/
public Boolean lSet(String key, Object value) {
try {
redisTemplate.opsForList().rightPush(key, value);
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return Boolean
*/
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) {
log.error("Exception: {}", e.getMessage());
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @return Boolean
*/
public Boolean lSet(String key, List value) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return Boolean
*/
public Boolean lSet(String key, List value, Long time) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
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 Boolean
*/
public Boolean lUpdateIndex(String key, Long index, Object value) {
try {
redisTemplate.opsForList().set(key, index, value);
return true;
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
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 {
return redisTemplate.opsForList().remove(key, count, value);
} catch (Exception e) {
log.error("Exception: {}", e.getMessage());
return 0L;
}
}
/**
* redis List数据结构 : 返回列表 key 中指定区间内的元素，区间以偏移量 start 和 end 指定。
*
* @param key the key
* @param start the start
* @param end the end
* @param valueSerializer 序列化
* @return the list
*/
public List getList(String key, int start, int end, RedisSerializer valueSerializer) {
byte[] rawKey = rawKey(key);
return redisTemplate.execute(connection -> deserializeValues(connection.lRange(rawKey, start, end), valueSerializer), true);
}
private byte[] rawKey(Object key) {
Assert.notNull(key, "non null key required");
if (key instanceof byte[]) {
return (byte[]) key;
}
RedisSerializer redisSerializer = (RedisSerializer)redisTemplate.getKeySerializer();
return redisSerializer.serialize(key);
}
private byte[] rawValue(Object value, RedisSerializer valueSerializer) {
if (value instanceof byte[]) {
return (byte[]) value;
}
return valueSerializer.serialize(value);
}
private List deserializeValues(List rawValues, RedisSerializer valueSerializer) {
if (valueSerializer == null) {
return rawValues;
}
return SerializationUtils.deserialize(rawValues, valueSerializer);
}
private Object deserializeValue(byte[] value, RedisSerializer valueSerializer) {
if (valueSerializer == null) {
return value;
}
return valueSerializer.deserialize(value);
}
public Boolean tryLock(String key, int expireTime) {
// final JSONObject lock = new JSONObject();
// lock.put("id", key);
// // startTime
// lock.put("st", System.currentTimeMillis());
// // keepSeconds
// lock.put("ks", expireTime);
return redisLockUtil.tryLock(key, "", expireTime);
}
public void unLock(String key) {
redisLockUtil.releaseLock(key, "");
}
}
