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JedisUtil 类实现缓存操作，提供静态方法获取缓存值。
javapublic class JedisUtil { private static Logger logger=LoggerFactory.getLogger(JedisUtil.class); private static JedisPool jedisPool=SpringContextUtil.getBean(JedisPool.class);
/** * 获取缓存值 * @param key 键 * @return 值 */ public static String getValue(String key) { // 获取Jedis连接 Jedis jedis=jedisPool.getResource(); try { // 从缓存获取值 String value=jedis.get(key); return value; } finally { // 关闭Jedis连接 jedis.close(); } }}
JedisUtil
public class JedisUtil {
private static Logger logger = LoggerFactory.getLogger(JedisUtil.class);
private static JedisPool jedisPool = SpringContextUtil.getBean(JedisPool.class);
/**
* 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 = StringUtil.isNotBlank(value) && !"nil".equalsIgnoreCase(value) ? value : null;
logger.debug("get {} = {}", key, value);
}
} catch (Exception e) {
logger.warn("get {} = {}", key, value, e);
} 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.warn("getObject {} = {}", key, value, e);
} 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.warn("set {} = {}", key, value, e);
} 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.warn("setObject {} = {}", key, value, e);
} finally {
returnResource(jedis);
}
return result;
}
/**
* 获取List缓存
* @param key 键
* @return 值
*/
public static List
getList(String key) {
List
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.warn("getList {} = {}", key, value, e); } finally { returnResource(jedis); } return value; } /** * 获取List缓存 * @param key 键 * @return 值 */ public static List
