springboot项目中使用redis缓存
导入redis jar包
<dependency> <groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
application.properties redis配置项
spring.cache.type=redisspring.redis.host=127.0.0.1
spring.redis.port=6379
spring.redis.database=0
spring.redis.password=111111
spring.redis.timeout=0
spring.redis.ssl=false
spring.redis.jedis.pool.max-active=300
spring.redis.jedis.pool.max-wait=-1
spring.redis.jedis.pool.max-idle=300
spring.redis.jedis.pool.min-idle=1
redis配置类
@Configuration@EnableCaching
public class RedisCacheConfig extends CachingConfigurerSupport {
@Autowired
private RedisProperties redisProperties;
@Autowired
private RedisProperties.Pool redisPropertiesPool;
@Bean
@ConditionalOnMissingBean(name = "poolConfig")
public JedisPoolConfig poolConfig() {
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
jedisPoolConfig.setBlockWhenExhausted(true);
jedisPoolConfig.setTestOnBorrow(true);
jedisPoolConfig.setMaxTotal(redisPropertiesPool.getMaxActive());
jedisPoolConfig.setMaxIdle(redisPropertiesPool.getMaxIdle());
jedisPoolConfig.setMinIdle(redisPropertiesPool.getMinIdle());
jedisPoolConfig.setMaxWaitMillis(redisPropertiesPool.getMaxWait());// 100000
jedisPoolConfig.setTestOnBorrow(true);
jedisPoolConfig.setTestOnReturn(true);
//Idle时进行连接扫描
jedisPoolConfig.setTestWhileIdle(true);
//表示idle object evitor两次扫描之间要sleep的毫秒数
jedisPoolConfig.setTimeBetweenEvictionRunsMillis(30000);
//表示idle object evitor每次扫描的最多的对象数
jedisPoolConfig.setNumTestsPerEvictionRun(10);
//表示一个对象至少停留在idle状态的最短时间，然后才能被idle object evitor扫描并驱逐；这一项只有在timeBetweenEvictionRunsMillis大于0时才有意义
jedisPoolConfig.setMinEvictableIdleTimeMillis(60000);
return jedisPoolConfig;
}
@Bean
@ConditionalOnMissingBean(name = "jedisPool")
public JedisPool jedisPool(JedisPoolConfig poolConfig) {
return new JedisPool(poolConfig,
redisProperties.getHost(),
redisProperties.getPort(),
redisProperties.getTimeout().getNano(),
redisProperties.getPassword());
}
@Bean
@ConditionalOnMissingBean(name = "redisConnectionFactory")
public RedisConnectionFactory redisConnectionFactory(JedisPoolConfig poolConfig) {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
//设置redis服务器的host或者ip地址
redisStandaloneConfiguration.setHostName(redisProperties.getHost());
redisStandaloneConfiguration.setPort(redisProperties.getPort());
redisStandaloneConfiguration.setPassword(redisProperties.getPassword());
redisStandaloneConfiguration.setDatabase(redisProperties.getDatabase());
//获得默认的连接池构造
//这里需要注意的是，edisConnectionFactoryJ对于Standalone模式的没有（RedisStandaloneConfiguration，JedisPoolConfig）的构造函数，对此
//我们用JedisClientConfiguration接口的builder方法实例化一个构造器，还得类型转换
JedisClientConfiguration.JedisPoolingClientConfigurationBuilder jpcf = (JedisClientConfiguration.JedisPoolingClientConfigurationBuilder) JedisClientConfiguration.builder();
//修改我们的连接池配置
jpcf.poolConfig(poolConfig);
//通过构造器来构造jedis客户端配置
JedisClientConfiguration jedisClientConfiguration = jpcf.build();
return new JedisConnectionFactory(redisStandaloneConfiguration, jedisClientConfiguration);
}
@Primary
@Bean
public CacheManager cacheManager(@Qualifier("redisConnectionFactory") RedisConnectionFactory redisConnectionFactory) {
RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();
//.entryTtl(Duration.ofHours(1)) // 设置缓存有效期一小时
//.disableCachingNullValues(); // 不缓存空值
return RedisCacheManager.builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))
.cacheDefaults(redisCacheConfiguration).build();
}
/**
* 实例化 RedisTemplate 对象
*
* @return
*/
@Bean(name = "redisTemplate")
@ConditionalOnMissingBean(name = "redisTemplate")
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(redisConnectionFactory);
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = this.jackson2JsonRedisSerializer();
template.setKeySerializer(redisSerializer);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.setHashKeySerializer(redisSerializer);
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
@Bean(name = "stringRedisTemplate")
@ConditionalOnMissingBean(name = "stringRedisTemplate")
public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
StringRedisTemplate template = new StringRedisTemplate();
template.setConnectionFactory(redisConnectionFactory);
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = this.jackson2JsonRedisSerializer();
template.setKeySerializer(redisSerializer);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.setHashKeySerializer(redisSerializer);
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
private Jackson2JsonRedisSerializer jackson2JsonRedisSerializer() {
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
jackson2JsonRedisSerializer.setObjectMapper(om);
return jackson2JsonRedisSerializer;
}
/**
* 对hash类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForHash();
}
/**
* 对redis字符串类型数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public ValueOperations<String, Object> valueOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForValue();
}
/**
* 对链表类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForList();
}
/**
* 对无序集合类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForSet();
}
/**
* 对有序集合类型的数据操作
*
* @param redisTemplate
* @return
*/
@Bean
public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {
return redisTemplate.opsForZSet();
}
@Bean
@Override
public KeyGenerator keyGenerator() {
return new KeyGenerator() {
@Override
public Object generate(Object target, Method method, Object... params) {
StringBuilder sb = new StringBuilder();
sb.append(target.getClass().getName());
sb.append(method.getName());
for (Object obj : params) {
sb.append(obj.toString());
}
return sb.toString();
}
};
}
@Bean
public RedisLockRegistry redisLockRegistry(@Qualifier("redisConnectionFactory") RedisConnectionFactory redisConnectionFactory) {
return new RedisLockRegistry(redisConnectionFactory, "redis_locks", 6000L);
}
@Bean
public Jedis jedis(@Qualifier("jedisPool") JedisPool jedisPool) {
return jedisPool.getResource();
}
@Bean
@ConditionalOnMissingBean(name = "redisUtils")
public RedisUtils redisUtils() {
return new RedisUtils();
}
}
redis工具类
@Component@Slf4j
public class RedisUtils {
private static final Charset REDIS_CODE = Charset.forName("UTF-8");
@Autowired
private RedisTemplate<String, Object> redisTemplate;
@Autowired
private StringRedisTemplate stringRedisTemplate;
public boolean hasKey(String key) {
return (boolean) redisTemplate.execute(new RedisCallback<Boolean>() {
@Override
public Boolean doInRedis(RedisConnection redisConnection) throws DataAccessException {
return redisConnection.exists(key.getBytes());
}
});
}
public void delete(String key) {
redisTemplate.delete(key);
}
/**
* 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) {
stringRedisTemplate.delete(key[0]);
//redisTemplate.getConnectionFactory().getConnection().del(key[0].getBytes());
} else {
stringRedisTemplate.delete(CollectionUtils.arrayToList(key));
}
}
}
public void set(String key, String value) {
ValueOperations valueOperations = redisTemplate.opsForValue();
valueOperations.set(key, value);
}
public void set(String key, String value, final long expireTime, TimeUnit timeUnit) {
ValueOperations valueOperations = redisTemplate.opsForValue();
valueOperations.set(key, value, expireTime, timeUnit);
}
public void set(String key, final String value, final long expireTime) {
redisTemplate.execute((RedisCallback) redisConnection -> {
redisConnection.set(key.getBytes(), value.getBytes(), Expiration.seconds(expireTime), RedisStringCommands.SetOption.upsert());
return null;
});
}
public Optional<String> get(String key) {
String result = (String) redisTemplate.execute((RedisCallback) redisConnection -> {
String result1 = null;
try {
result1 = new String(redisConnection.get(key.getBytes()));
} catch (Exception e) {
return null;
}
return result1;
});
return result == null ? Optional.empty() : Optional.of(result.toString());
}
public void setStr(String key, String value) {
stringRedisTemplate.opsForValue().set(key, value);
}
public String getStr(String key) {
if (StringUtils.isBlank(key)) {
return null;
}
String value = stringRedisTemplate.opsForValue().get(key);
return value;
}
public void hashSet(String key, String field, String value) {
HashOperations hashOperations = redisTemplate.opsForHash();
hashOperations.put(key, field, value);
}
public Optional<String> hashGet(String key, String field) {
HashOperations hashOperations = redisTemplate.opsForHash();
Object result = hashOperations.get(key, field);
return result == null ? Optional.empty() : Optional.of(result.toString());
}
/**
* HashSet
*
* @param key 键
* @param map 对应多个键值
* @return true 成功 false 失败
*/
public boolean hmset(String key, HashMap<String, Object> map) {
try {
stringRedisTemplate.opsForHash().putAll(key, map);
return true;
} catch (Exception e) {
log.error("hmset error", e);
return false;
}
}
/**
* 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 stringRedisTemplate.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) {
Map<Object, Object> map = stringRedisTemplate.opsForHash().entries(key);
return map;
}
/**
* 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 {
stringRedisTemplate.opsForHash().put(key, item, value);
return true;
} catch (Exception e) {
log.error("hset 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 {
stringRedisTemplate.opsForHash().put(key, item, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
log.error("hset 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) {
stringRedisTemplate.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 stringRedisTemplate.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 stringRedisTemplate.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 stringRedisTemplate.opsForHash().increment(key, item, -by);
}
/**
* 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) {
stringRedisTemplate.expire(key, time, TimeUnit.SECONDS);
redisTemplate.expire(key, time, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
log.error("expire 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 stringRedisTemplate.getExpire(key, TimeUnit.SECONDS);
}
//============================set=============================
/**
* 根据key获取Set中的所有值
*
* @param key 键
* @return
*/
public Set<String> sGet(String key) {
try {
return stringRedisTemplate.opsForSet().members(key);
} catch (Exception e) {
log.error("sGet 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 stringRedisTemplate.opsForSet().isMember(key, value);
} catch (Exception e) {
log.error("sHasKey error", e);
return false;
}
}
//===============================list=================================
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @return
*/
public boolean lSet(String key, String value) {
try {
stringRedisTemplate.opsForList().rightPush(key, value);
return true;
} catch (Exception e) {
log.error("lSet 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, String value, long time) {
try {
stringRedisTemplate.opsForList().rightPush(key, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
log.error("lSet error", e);
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @return
*/
/*public boolean lSet(String key, List<String> value) {
try {
stringRedisTemplate.opsForList().rightPushAll(key, value);
return true;
} catch (Exception e) {
log.error("lSet error", e);
return false;
}
}*/
public boolean lSet(String key, List<Object> value) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
return true;
} catch (Exception e) {
log.error("lSet error", e);
return false;
}
}
public boolean publish(String channel, JSONObject value) {
try {
redisTemplate.convertAndSend(channel, value);
//stringRedisTemplate.convertAndSend(channel,value);
return true;
} catch (Exception e) {
log.error("publish error", e);
return false;
}
}
public boolean publishMsg(String channel, String value) {
try {
redisTemplate.convertAndSend(channel, value);
//stringRedisTemplate.convertAndSend(channel,value);
return true;
} catch (Exception e) {
log.error("publishMsg error", e);
return false;
}
}
public boolean lpush(String key, JSONObject value) {
try {
//jedis.lpush(key, value.toString());
redisTemplate.opsForList().leftPush(key, value.toString());
return true;
} catch (Exception e) {
log.error("lpush error", e);
return false;
}
}
public boolean lpush(String key, String value) {
try {
//jedis.lpush(key, value.toString());
redisTemplate.opsForList().leftPush(key, value);
return true;
} catch (Exception e) {
log.error("lpush error", e);
return false;
}
}
public Object lpop(String key) {
try {
Object object = redisTemplate.opsForList().leftPop(key);
return object;
} catch (Exception e) {
log.error("lpop error", e);
}
return null;
}
public Object rpop(String key) {
try {
Object object = redisTemplate.opsForList().rightPop(key);
return object;
} catch (Exception e) {
log.error("rpop error", e);
}
return null;
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, List<String> value, long time) {
try {
stringRedisTemplate.opsForList().rightPushAll(key, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
log.error("lSet error", e);
return false;
}
}
/**
* 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<String> lGet(String key, long start, long end) {
try {
return stringRedisTemplate.opsForList().range(key, start, end);
} catch (Exception e) {
log.error("lGet error", e);
return null;
}
}
/**
* 获取list缓存的长度
*
* @param key 键
* @return
*/
public long lGetListSize(String key) {
try {
return stringRedisTemplate.opsForList().size(key);
} catch (Exception e) {
log.error("lGetListSize 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 stringRedisTemplate.opsForList().index(key, index);
} catch (Exception e) {
log.error("lGetIndex error", e);
return null;
}
}
/**
* 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, String value) {
try {
stringRedisTemplate.opsForList().set(key, index, value);
return true;
} catch (Exception e) {
log.error("lUpdateIndex 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 = stringRedisTemplate.opsForList().remove(key, count, value);
return remove;
} catch (Exception e) {
log.error("lRemove error", e);
return 0;
}
}
/*public Long incr(String key, long liveTime) {
RedisAtomicLong entityIdCounter = new RedisAtomicLong(key, redisTemplate.getConnectionFactory());
Long increment = entityIdCounter.getAndIncrement();
//初始设置过期时间
if ((null == increment || increment.longValue() == 0) && liveTime > 0) {
entityIdCounter.expire(liveTime, TimeUnit.SECONDS);
}
return increment;
}*/
public Long incr(String key) {
return incr(key, 1L);
}
public Long decr(String key) {
return incr(key, -1L);
}
public Long incrWithExpireTime(String key, long time) {
Long l = incr(key, 1L);
expire(key, time);
return l;
}
public Long decrWithExpireTime(String key, long time) {
Long l = incr(key, -1L);
expire(key, time);
return l;
}
public Long incr(String key, long add) {
return stringRedisTemplate.execute((RedisCallback<Long>) con -> {
Long record = con.incrBy(toBytes(key), add);
return record == null ? 0L : record;
});
}
private byte[] toBytes(String key) {
nullCheck(key);
return key.getBytes(REDIS_CODE);
}
private void nullCheck(Object... args) {
for (Object obj : args) {
if (obj == null) {
throw new IllegalArgumentException("redis argument can not be null!");
}
}
}
public boolean addOnlinePlayer(String playerName, Integer id) {
boolean success = redisTemplate.opsForZSet().add("ONLINE_PLAYERS", playerName, id);
return success;
}
public boolean rmOnlinePlayer(String playerName) {
Long id = redisTemplate.opsForZSet().remove("ONLINE_PLAYERS", playerName);
return id > 0;
}
public boolean isOnlinePlayer(String playerName) {
Double score = redisTemplate.opsForZSet().score("ONLINE_PLAYERS", playerName);
if (null == score) {
return false;
}
return score.compareTo(new Double(0)) > 0;
}
}
测试结果
源码示例：https://gitee.com/lion123/springboot-redis-demo
以上是 springboot项目中使用redis缓存 的全部内容， 来源链接： utcz.com/z/514560.html
