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1:添加maven依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>1.4.7.RELEASE</version>
</dependency>2：在application.yml中配置redis的连接参数
spring:
redis:
database: 0
hostName: 127.0.0.1
port: 6379
timeout: 0
password:
pool:
maxTotal: 200
maxWaitMillis: 10000
maxIdle: 50
minIdle: 10
testOnBorrow: true3：创建redis的配置类RedisConfig.java
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
@Value("${spring.redis.database}")
private int database;
@Value("${spring.redis.hostName}")
private String hostName;
@Value("${spring.redis.port}")
private int port;
@Value("${spring.redis.password}")
private String password;
@Value("${spring.redis.timeout}")
private int timeout;
@Value("${spring.redis.pool.maxIdle}")
private int maxIdle;
@Value("${spring.redis.pool.minIdle}")
private int minIdle;
@Value("${spring.redis.pool.maxTotal}")
private int maxTotal;
@Value("${spring.redis.pool.maxWaitMillis}")
private long maxWaitMillis;
@Value("${spring.redis.pool.testOnBorrow}")
private boolean testOnBorrow;
public JedisPoolConfig poolCofig(int maxIdle, int maxTotal,
long maxWaitMillis, boolean testOnBorrow) {
JedisPoolConfig poolCofig = new JedisPoolConfig();
poolCofig.setMaxIdle(maxIdle);
poolCofig.setMaxIdle(minIdle);
poolCofig.setMaxTotal(maxTotal);
poolCofig.setMaxWaitMillis(maxWaitMillis);
poolCofig.setTestOnBorrow(testOnBorrow);
return poolCofig;
}
@Bean
public JedisConnectionFactory redisConnectionFactory() {
JedisConnectionFactory factory = new JedisConnectionFactory();
factory.setDatabase(database);
factory.setHostName(hostName);
factory.setPort(port);
factory.setPassword(password);
factory.setTimeout(timeout);
factory.setPoolConfig(poolCofig(maxIdle, maxTotal, maxWaitMillis, testOnBorrow));
// 初始化连接pool
factory.afterPropertiesSet();
return factory;
}
@Bean
@Override
public KeyGenerator keyGenerator() {
return (target, method, objects) -> {
StringBuilder sb = new StringBuilder();
sb.append(target.getClass().getName());
sb.append("::" + method.getName() + ":");
for (Object obj : objects) {
sb.append(obj.toString());
}
return sb.toString();
};
}
// @Bean
// public CacheManager cacheManager(@SuppressWarnings("rawtypes") RedisTemplate redisTemplate) {
// return new RedisCacheManager(redisTemplate);
// }
@Bean
public RedisTemplate<String, String> redisTemplate(
RedisConnectionFactory factory) {
StringRedisTemplate template = new StringRedisTemplate(factory);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
//om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
@Bean
public JedisPool getJedisPool(){
JedisPoolConfig config = new JedisPoolConfig();
config.setMaxTotal(maxTotal);
config.setMaxIdle(maxIdle);
config.setMinIdle(minIdle);
config.setTestOnBorrow(testOnBorrow);
config.setTestOnReturn(false);
config.setBlockWhenExhausted(true);
config.setMaxWaitMillis(maxWaitMillis);
JedisPool pool = new JedisPool(config,hostName,port,timeout,password);
return pool;
}
}4：创建redis操作服务类RedisService.java
@Component
public class RedisService {
@Autowired
private RedisTemplate redisTemplate;
@Autowired
private JedisPool jedisPool;
public Jedis getResource() {
return jedisPool.getResource();
}
public void returnResource(Jedis jedis) {
if (jedis != null) {
jedisPool.returnResourceObject(jedis);
}
}
//=============================common============================
/**
* 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) {
e.printStackTrace();
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) {
e.printStackTrace();
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 Object get(String key) {
return key == null ? null : redisTemplate.opsForValue().get(key);
}
/**
* 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) {
e.printStackTrace();
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) {
e.printStackTrace();
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 redisTemplate.opsForValue().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 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 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 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 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 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 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;
}
}
//======================================
/**
* 批量删除对应的value
*
* @param keys
*/
public void remove(final String... keys) {
for (String key : keys) {
remove(key);
}
}
/**
* 批量删除key
*
* @param pattern
*/
public void removePattern(final String pattern) {
Set<Serializable> keys = redisTemplate.keys(pattern);
if (keys.size() > 0)
redisTemplate.delete(keys);
}
/**
* 删除对应的value
*
* @param key
*/
public void remove(final String key) {
if (exists(key)) {
redisTemplate.delete(key);
}
}
/**
* 判断缓存中是否有对应的value
*
* @param key
* @return
*/
public boolean exists(final String key) {
return redisTemplate.hasKey(key);
}
// /**
// * 读取缓存
// *
// * @param key
// * @return
// */
// public Object get(final String key) {
// Object result = null;
// ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
// result = operations.get(key);
// return result;
// }
// /**
// * 写入缓存
// *
// * @param key
// * @param value
// * @return
// */
// public boolean set(final String key, Object value) {
// boolean result = false;
// try {
// ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
// operations.set(key, value);
// result = true;
// } catch (Exception e) {
// e.printStackTrace();
// }
// return result;
// }
// /**
// * 写入缓存
// *
// * @param key
// * @param value
// * @return
// */
// public boolean set(final String key, Object value, Long expireTime) {
// boolean result = false;
// try {
// ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
// operations.set(key, value);
// redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
// result = true;
// } catch (Exception e) {
// e.printStackTrace();
// }
// return result;
// }
/**
* 删除单个key
*
* @param key
*/
public void removeMemberSet(String key) {
redisTemplate.opsForSet().getOperations().delete(key);
}
/**
* 判断制定集合value是否存在
*
* @param key
* @return
*/
public boolean isMemberSet(String key, String value) {
return redisTemplate.opsForSet().isMember(key, value);
}
/**
* 向指定无序集合Set里添加value
*
* @param key
*/
public void addMemberSet(String key, String value) {
redisTemplate.opsForSet().add(key, value);
}
/**
* 删除指定key获得集合里的值
*
* @param key
* @param value
* @return
*/
public boolean removeMemberSetValue(String key, String value) {
return redisTemplate.opsForSet().remove(key, value) == 1;
}
public Set<? extends Object> getMeberSetMeber(String key) {
return redisTemplate.opsForSet().members(key);
}
//////////////////////////////////分布式锁工具类 start
/**
* 获取key的VALUE
*
* @param key
* @return
*/
@SuppressWarnings("finally")
public String getByKey(String key) {
Jedis jedis = null;
String result = null;
try {
jedis = getResource();
result = jedis.get(key);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (jedis != null) {
returnResource(jedis);
}
return result;
}
}
/**
* 不存在新增 成功返回1 ，不成功返回0
*
* @param key
* @param value
* @return
*/
@SuppressWarnings("finally")
public Long setnxByKey(String key, String value) {
Jedis jedis = null;
Long result = null;
try {
jedis = getResource();
result = jedis.setnx(key, value);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (jedis != null) {
returnResource(jedis);
}
return result;
}
}
/**
* 获取老版本的旧值
*
* @param key
* @param value
* @return
*/
@SuppressWarnings("finally")
public String getSetByKey(String key, String value) {
Jedis jedis = null;
String result = null;
try {
jedis = getResource();
result = jedis.getSet(key, value);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (jedis != null) {
returnResource(jedis);
}
return result;
}
}
/**
* 制定KEY过期
*
* @param key
* @param seconds
* @return
*/
@SuppressWarnings("finally")
public Long expireByKey(String key, int seconds) {
Jedis jedis = null;
Long result = null;
try {
jedis = getResource();
result = jedis.expire(key, seconds);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (jedis != null) {
returnResource(jedis);
}
return result;
}
}
/**
* 删除制定KEY的VALUE
*
* @param key
* @return
*/
@SuppressWarnings("finally")
public Long delByKey(String key) {
Jedis jedis = null;
Long result = null;
try {
jedis = getResource();
result = jedis.del(key);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (jedis != null) {
returnResource(jedis);
}
return result;
}
}
/**
* 获取分布式锁
*
* @param lockName
* @return
*/
public boolean lock(String lockName) {//lockName可以为共享变量名，也可以为方法名，主要是用于模拟锁信息
System.out.println(Thread.currentThread() + "开始尝试加锁！");
Long result = setnxByKey(lockName, String.valueOf(System.currentTimeMillis() + 10000));
if (result != null && result.intValue() == 1) {
System.out.println(Thread.currentThread() + "加锁成功！");
expireByKey(lockName, 10);
System.out.println(Thread.currentThread() + "获得锁可以开始执行业务逻辑！");
// delByKey(lockName); //在业务代码里执行
return true;
} else {
String lockValueA = getByKey(lockName);
if (lockValueA != null && Long.parseLong(lockValueA) >= System.currentTimeMillis()) {
String lockValueB = getSetByKey(lockName, String.valueOf(System.currentTimeMillis() + 10000));
if (lockValueB == null || lockValueB.equals(lockValueA)) {
System.out.println(Thread.currentThread() + "加锁成功！");
expireByKey(lockName, 10);
System.out.println(Thread.currentThread() + "获得锁可以开始执行业务逻辑！");
// delByKey(lockName); //在业务代码里执行
return true;
} else {
return false;
}
} else {
return false;
}
}
}
//////////////////////////////////分布式锁工具类 end
}5:写测试类来测试
@RunWith(SpringRunner.class)
@SpringBootTest
public class NanawalletServerApplicationTests {
@Autowired
private RedisService redisService;
@Test
public void contextLoads() {
}
@Test
public void testInsertRedis(){
this.redisService.set("test_redis","123456");
System.out.println( this.redisService.get("test_redis"));
}
}