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1-需要spring-boot-starter-data-redis依赖,支持redis:主要以为Jedis客户端为主,排除默认的lettuce作为客户端的依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
<version>2.1.8.RELEASE</version>
</dependency>
2-需要jedis-client依赖,使用jedis作为客户端
<!-- Redis Client 3版本以上会报错与spring-boot-starter-data-redis冲突 -->
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
</dependency>
redis: database: 1 host: 127.0.0.1 port: 6379 password: 123456 timeout: 2000 jedis: pool: #最大连接数 max-active: 20 #最大阻塞等待时长 max-wait: -1 #连接池最大空闲连接 max-idle: 20 #连接池最小空闲连接 min-idle: 0
import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; @Component public class JedisConfigPropertys{ @Value("${spring.redis.host}") private String host; @Value("${spring.redis.port}") private int port; @Value("${spring.redis.timeout}") private int timeout; @Value("${spring.redis.jedis.pool.max-active}") private int maxActive; @Value("${spring.redis.jedis.pool.max-idle}") private int maxIdle; @Value("${spring.redis.jedis.pool.min-idle}") private int minIdle; @Value("${spring.redis.jedis.pool.max-wait}") private long maxWaitMillis; public String getHost() { return host; } public void setHost(String host) { this.host = host; } public int getPort() { return port; } public void setPort(int port) { this.port = port; } public int getTimeout() { return timeout; } public void setTimeout(int timeout) { this.timeout = timeout; } public int getMaxActive() { return maxActive; } public void setMaxActive(int maxActive) { this.maxActive = maxActive; } public int getMaxIdle() { return maxIdle; } public void setMaxIdle(int maxIdle) { this.maxIdle = maxIdle; } public int getMinIdle() { return minIdle; } public void setMinIdle(int minIdle) { this.minIdle = minIdle; } public long getMaxWaitMillis() { return maxWaitMillis; } public void setMaxWaitMillis(long maxWaitMillis) { this.maxWaitMillis = maxWaitMillis; } }
import com.example.config.JedisConfigPropertys; import io.lettuce.core.RedisException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; import javax.annotation.PostConstruct; @Component public class JedisPoolConnection { private JedisPool jedisPool = null; @Autowired private JedisConfigPropertys parameters; //初始化redisWrapper (PostConstruct注解相当于静态代码库,方法会在类初始化的时候 进行执行) @PostConstruct public void init() throws RedisException { try { JedisPoolConfig config = new JedisPoolConfig(); config.setMaxIdle(parameters.getMaxIdle()); config.setMaxTotal(parameters.getMaxActive()); config.setMaxWaitMillis(parameters.getMaxWaitMillis()); jedisPool = new JedisPool(config, parameters.getHost(), parameters.getPort(), 2000); } catch (Exception e) { throw new RedisException("初始化redisPool失败"); //抛出异常 } } public JedisPool getJedisPool() { return jedisPool; } }
添加pom.xml
<!-- ftp jar -->
<dependency>
<groupId>commons-net</groupId>
<artifactId>commons-net</artifactId>
<version>3.3</version>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
ApplicationContextUtil
import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.stereotype.Component; /** * Spring ApplicationContext工具类. <br> * 获取web应用的applicationContext及其管理的bean. * * @version 1.0 */ @Component public class ApplicationContextUtil implements ApplicationContextAware { private static ApplicationContext applicationContext = null; /** * @see org.springframework.context.ApplicationContextAware#setApplicationContext(org.springframework.context.ApplicationContext) */ public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { if (ApplicationContextUtil.applicationContext == null) { ApplicationContextUtil.applicationContext = applicationContext; } } /** * 获取applicationContext. * * @return applicationContext */ public static ApplicationContext getApplicationContext() { return applicationContext; } /** * 获取applicationContext中的bean. * * @param name beanId * @param requiredType bean类型 * @return bean */ public static <T> T getBean(String name, Class<T> requiredType) { return getApplicationContext().getBean(name, requiredType); } }
ObjectPlusUtils对象操作工具类
import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; /** * 对象操作工具类, 继承org.apache.commons.lang3.ObjectUtils类. * * @version 1.0 */ public class ObjectPlusUtils extends org.apache.commons.lang3.ObjectUtils { private static final Logger logger = LoggerFactory.getLogger(ObjectPlusUtils.class); /** * 序列化对象. * * @param object 对象 * @return 序列化的对象 */ public static byte[] serialize(Object object) { ObjectOutputStream oos = null; ByteArrayOutputStream baos = null; try { if (object != null) { baos = new ByteArrayOutputStream(); oos = new ObjectOutputStream(baos); oos.writeObject(object); return baos.toByteArray(); } } catch (Exception e) { logger.error("序列化对象失败", e); } return null; } /** * 反序列化对象. * * @param bytes 对象 * @return 反序列化的对象 */ public static Object unserialize(byte[] bytes) { ByteArrayInputStream bais = null; try { if (bytes != null && bytes.length > 0) { bais = new ByteArrayInputStream(bytes); ObjectInputStream ois = new ObjectInputStream(bais); return ois.readObject(); } } catch (Exception e) { logger.error("反序列化对象失败", e); } return null; } }
JedisUtils 缓存工具类
import com.example.config.JedisPoolConnection; import com.google.common.collect.Lists; import com.google.common.collect.Maps; import com.google.common.collect.Sets; import org.apache.commons.lang3.StringUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.ScanParams; import redis.clients.jedis.ScanResult; import redis.clients.jedis.exceptions.JedisException; import java.io.UnsupportedEncodingException; import java.nio.charset.Charset; import java.util.*; public class JedisUtils { private static final Logger logger = LoggerFactory.getLogger(JedisUtils.class); private static JedisPool jedisPool = ApplicationContextUtil.getBean("jedisPoolConnection", JedisPoolConnection.class).getJedisPool(); /** * 获取缓存. * * @param key 键 * @return 值 */ public static String get(String key) { String value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.get(key); // value = !CacheKeyUtils.NULL_OBJECT.equalsIgnoreCase(value) ? // value : null; logger.debug("get {} = {}", key, value); } } catch (Exception e) { logger.error("get {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 获取缓存. * * @param key 键 * @return 值 */ public static Object getObject(String key) { Object value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { value = toObject(jedis.get(getBytesKey(key))); logger.debug("getObject {} = {}", key, value); } } catch (Exception e) { logger.error("getObject {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 设置缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static String set(String key, String value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); result = jedis.set(key, value); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("set {} = {}", key, value); } catch (Exception e) { logger.error("set {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 设置缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static String setObject(String key, Object value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); result = jedis.set(getBytesKey(key), toBytes(value)); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObject {} = {}", key, value); } catch (Exception e) { logger.error("setObject {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 获取List缓存. * * @param key 键 * @return 值 */ public static List<String> getList(String key) { List<String> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.lrange(key, 0, -1); logger.debug("getList {} = {}", key, value); } } catch (Exception e) { logger.error("getList {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 获取List缓存. * * @param key 键 * @return 值 */ public static List<Object> getObjectList(String key) { List<Object> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { List<byte[]> list = jedis.lrange(getBytesKey(key), 0, -1); value = Lists.newArrayList(); for (byte[] bs : list) { value.add(toObject(bs)); } logger.debug("getObjectList {} = {}", key, value); } } catch (Exception e) { logger.error("getObjectList {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 设置List缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static long setList(String key, List<String> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { jedis.del(key); } result = jedis.rpush(key, value.toArray(new String[value.size()])); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setList {} = {}", key, value); } catch (Exception e) { logger.error("setList {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 设置List缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static long setObjectList(String key, List<Object> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { jedis.del(key); } List<byte[]> list = Lists.newArrayList(); for (Object o : value) { list.add(toBytes(o)); } result = jedis.rpush(getBytesKey(key), (byte[][]) list.toArray()); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObjectList {} = {}", key, value); } catch (Exception e) { logger.error("setObjectList {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 向List缓存中添加值. * * @param key 键 * @param value 值 * @return */ public static long listAdd(String key, String... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.rpush(key, value); logger.debug("listAdd {} = {}", key, value); } catch (Exception e) { logger.error("listAdd {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 向List缓存中添加值. * * @param key 键 * @param value 值 * @return */ public static long listObjectAdd(String key, Object... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); List<byte[]> list = Lists.newArrayList(); for (Object o : value) { list.add(toBytes(o)); } result = jedis.rpush(getBytesKey(key), (byte[][]) list.toArray()); logger.debug("listObjectAdd {} = {}", key, value); } catch (Exception e) { logger.error("listObjectAdd {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 获取缓存. * * @param key 键 * @return 值 */ public static Set<String> getSet(String key) { Set<String> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.smembers(key); logger.debug("getSet {} = {}", key, value); } } catch (Exception e) { logger.error("getSet {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 获取缓存. * * @param key 键 * @return 值 */ public static Set<Object> getObjectSet(String key) { Set<Object> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { value = Sets.newHashSet(); Set<byte[]> set = jedis.smembers(getBytesKey(key)); for (byte[] bs : set) { value.add(toObject(bs)); } logger.debug("getObjectSet {} = {}", key, value); } } catch (Exception e) { logger.error("getObjectSet {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 设置Set缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static long setSet(String key, Set<String> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { jedis.del(key); } result = jedis.sadd(key, value.toArray(new String[value.size()])); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setSet {} = {}", key, value); } catch (Exception e) { logger.error("setSet {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 设置Set缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static long setObjectSet(String key, Set<Object> value, int cacheSeconds) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { jedis.del(key); } Set<byte[]> set = Sets.newHashSet(); for (Object o : value) { set.add(toBytes(o)); } result = jedis.sadd(getBytesKey(key), (byte[][]) set.toArray()); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObjectSet {} = {}", key, value); } catch (Exception e) { logger.error("setObjectSet {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 向Set缓存中添加值. * * @param key 键 * @param value 值 * @return */ public static long setSetAdd(String key, String... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.sadd(key, value); logger.debug("setSetAdd {} = {}", key, value); } catch (Exception e) { logger.error("setSetAdd {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 向Set缓存中添加值. * * @param key 键 * @param value 值 * @return */ public static long setSetObjectAdd(String key, Object... value) { long result = 0; Jedis jedis = null; try { jedis = getResource(); Set<byte[]> set = Sets.newHashSet(); for (Object o : value) { set.add(toBytes(o)); } result = jedis.rpush(getBytesKey(key), (byte[][]) set.toArray()); logger.debug("setSetObjectAdd {} = {}", key, value); } catch (Exception e) { logger.error("setSetObjectAdd {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 获取Map缓存. * * @param key 键 * @return 值 */ public static Map<String, String> getMap(String key) { Map<String, String> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { value = jedis.hgetAll(key); logger.debug("getMap {} = {}", key, value); } } catch (Exception e) { logger.error("getMap {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 获取Map缓存. * * @param key 键 * @return 值 */ public static Map<String, Object> getObjectMap(String key) { Map<String, Object> value = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { value = Maps.newHashMap(); Map<byte[], byte[]> map = jedis.hgetAll(getBytesKey(key)); for (Map.Entry<byte[], byte[]> e : map.entrySet()) { value.put(StringUtils.toEncodedString(e.getKey(), Charset.forName("UTF8")), toObject(e.getValue())); } logger.debug("getObjectMap {} = {}", key, value); } } catch (Exception e) { logger.error("getObjectMap {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return value; } /** * 设置Map缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static String setMap(String key, Map<String, String> value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { jedis.del(key); } result = jedis.hmset(key, value); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setMap {} = {}", key, value); } catch (Exception e) { logger.error("setMap {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 设置Map缓存. * * @param key 键 * @param value 值 * @param cacheSeconds 超时时间,0为不超时 * @return */ public static String setObjectMap(String key, Map<String, Object> value, int cacheSeconds) { String result = null; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { jedis.del(key); } Map<byte[], byte[]> map = Maps.newHashMap(); for (Map.Entry<String, Object> e : value.entrySet()) { map.put(getBytesKey(e.getKey()), toBytes(e.getValue())); } result = jedis.hmset(getBytesKey(key), (Map<byte[], byte[]>) map); if (cacheSeconds != 0) { jedis.expire(key, cacheSeconds); } logger.debug("setObjectMap {} = {}", key, value); } catch (Exception e) { logger.error("setObjectMap {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 向Map缓存中添加值. * * @param key 键 * @param value 值 * @return */ public static String mapPut(String key, Map<String, String> value) { String result = null; Jedis jedis = null; try { jedis = getResource(); result = jedis.hmset(key, value); logger.debug("mapPut {} = {}", key, value); } catch (Exception e) { logger.error("mapPut {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 向Map缓存中添加值. * * @param key 键 * @param value 值 * @return */ public static String mapObjectPut(String key, Map<String, Object> value) { String result = null; Jedis jedis = null; try { jedis = getResource(); Map<byte[], byte[]> map = Maps.newHashMap(); for (Map.Entry<String, Object> e : value.entrySet()) { map.put(getBytesKey(e.getKey()), toBytes(e.getValue())); } result = jedis.hmset(getBytesKey(key), (Map<byte[], byte[]>) map); logger.debug("mapObjectPut {} = {}", key, value); } catch (Exception e) { logger.error("mapObjectPut {} = {}", key, value, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 移除Map缓存中的值. * * @param key 键 * @param mapKey 值 * @return */ public static long mapRemove(String key, String mapKey) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.hdel(key, mapKey); logger.debug("mapRemove {} {}", key, mapKey); } catch (Exception e) { logger.error("mapRemove {} {}", key, mapKey, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 移除Map缓存中的值. * * @param key 键 * @param mapKey 值 * @return */ public static long mapObjectRemove(String key, String mapKey) { long result = 0; Jedis jedis = null; try { jedis = getResource(); result = jedis.hdel(getBytesKey(key), getBytesKey(mapKey)); logger.debug("mapObjectRemove {} {}", key, mapKey); } catch (Exception e) { logger.error("mapObjectRemove {} {}", key, mapKey, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 判断Map缓存中的Key是否存在. * * @param key 键 * @param mapKey 值 * @return */ public static boolean mapExists(String key, String mapKey) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.hexists(key, mapKey); logger.debug("mapExists {} {}", key, mapKey); } catch (Exception e) { logger.error("mapExists {} {}", key, mapKey, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 判断Map缓存中的Key是否存在. * * @param key 键 * @param mapKey 值 * @return */ public static boolean mapObjectExists(String key, String mapKey) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.hexists(getBytesKey(key), getBytesKey(mapKey)); logger.debug("mapObjectExists {} {}", key, mapKey); } catch (Exception e) { logger.error("mapObjectExists {} {}", key, mapKey, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 删除缓存. * * @param key 键 * @return */ public static long del(String key) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(key)) { result = jedis.del(key); logger.debug("del {}", key); } else { logger.debug("del {} not exists", key); } } catch (Exception e) { logger.error("del {}", key, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 删除缓存. * * @param key 键 * @return */ public static long delObject(String key) { long result = 0; Jedis jedis = null; try { jedis = getResource(); if (jedis.exists(getBytesKey(key))) { result = jedis.del(getBytesKey(key)); logger.debug("delObject {}", key); } else { logger.debug("delObject {} not exists", key); } } catch (Exception e) { logger.error("delObject {}", key, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 缓存是否存在. * * @param key 键 * @return */ public static boolean exists(String key) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.exists(key); logger.debug("exists {}", key); } catch (Exception e) { logger.error("exists {}", key, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 缓存是否存在. * * @param key 键 * @return */ public static boolean existsObject(String key) { boolean result = false; Jedis jedis = null; try { jedis = getResource(); result = jedis.exists(getBytesKey(key)); logger.debug("existsObject {}", key); } catch (Exception e) { logger.error("existsObject {}", key, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return result; } /** * 获取资源. * * @return Jedis资源 * @throws JedisException */ public static Jedis getResource() throws JedisException { Jedis jedis = null; try { jedis = jedisPool.getResource(); } catch (JedisException e) { logger.error("getResource.", e); returnBrokenResource(jedis); throw e; } return jedis; } /** * 归还资源. * * @param jedis Jedis资源 */ public static void returnBrokenResource(Jedis jedis) { if (jedis != null) { jedis.close(); } } /** * 释放资源. * * @param jedis Jedis资源 */ public static void returnResource(Jedis jedis) { if (jedis != null) { jedis.close(); } } /** * 获取byte[]类型Key. * * @param object 对象 * @return byte[]类型Key */ public static byte[] getBytesKey(Object object) { if (object instanceof String) { String objectStr = (String) object; try { return objectStr.getBytes("UTF8"); } catch (UnsupportedEncodingException e) { logger.error("getBytes {} error", object, e); return null; } } else { return ObjectPlusUtils.serialize(object); } } /** * Object转换byte[]类型. * * @param object 对象 * @return 转换的byte[]类型 */ public static byte[] toBytes(Object object) { return ObjectPlusUtils.serialize(object); } /** * byte[]型转换Object. * * @param bytes byte数据 * @return Object */ public static Object toObject(byte[] bytes) { return ObjectPlusUtils.unserialize(bytes); } /** * 获取所有keyPrefix为前缀的key名称. * * @param keyPrefix 前缀 * @return 所有keyPrefix为前缀的key名称 */ public static Set<String> keys(String keyPrefix) { Set<String> matchingKeys = new HashSet<>(); Jedis jedis = null; try { jedis = getResource(); ScanParams params = new ScanParams(); params.match(keyPrefix + "*"); String nextCursor = "0"; do { ScanResult<String> scanResult = jedis.scan(nextCursor, params); List<String> keys = scanResult.getResult(); nextCursor = scanResult.getStringCursor(); matchingKeys.addAll(keys); } while (!nextCursor.equals("0")); logger.debug("keys {} {}", keyPrefix); } catch (Exception e) { logger.error("keys {} {}", keyPrefix, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return matchingKeys; } /** * 获取分布式锁 * * @param key * @param requestId * @param expireTime * @return */ public static boolean tryGetDistributedLock(String key, String requestId, int expireTime) { Jedis jedis = null; try { jedis = getResource(); String result = jedis.set(key, requestId, "NX", "PX", expireTime); if ("OK".equals(result)) { return true; } return false; } catch (Exception e) { logger.error("keys {} {}", key, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return false; } /** * 释放分布式锁. * * @param key * @param requestId * @return */ public static boolean releaseDistributedLock(String key, String requestId) { Jedis jedis = null; try { jedis = getResource(); String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end"; Object result = jedis.eval(script, Collections.singletonList(key), Collections.singletonList(requestId)); if (result.equals(1L)) { return true; } return false; } catch (Exception e) { logger.error("keys {} {}", key, e); returnBrokenResource(jedis); } finally { returnResource(jedis); } return false; } }
使用时直接JedisUtils.里面的方法就ok了
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