
package cloud.app.prod.home.utils; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; public class RedisUtil { // Redis服務器IP private static String ADDR = "127.0.0.1"; // Redis的端口號 private static int PORT = 6379; // 訪問密碼 private static String AUTH = "scrm__12345"; // 可用連接實例的最大數目,默認值為8; // 如果賦值為-1,則表示不限制;如果pool已經分配了maxActive個jedis實例,則此時pool的狀態為exhausted(耗盡)。 private static int MAX_ACTIVE = 1024; // 控制一個pool最多有多少個狀態為idle(空閑的)的jedis實例,默認值也是8。 private static int MAX_IDLE = 200; // 等待可用連接的最大時間,單位毫秒,默認值為-1,表示永不超時。如果超過等待時間,則直接拋出JedisConnectionException; private static int MAX_WAIT = 10000; private static int TIMEOUT = 10000; // 在borrow一個jedis實例時,是否提前進行validate操作;如果為true,則得到的jedis實例均是可用的; private static boolean TEST_ON_BORROW = true; private static JedisPool jedisPool = null; /** * 初始化Redis連接池 */ static { try { JedisPoolConfig config = new JedisPoolConfig(); config.setMaxActive(MAX_ACTIVE); config.setMaxIdle(MAX_IDLE); config.setMaxWait(MAX_WAIT); config.setTestOnBorrow(TEST_ON_BORROW); jedisPool = new JedisPool(config, ADDR, PORT, TIMEOUT, AUTH); } catch (Exception e) { e.printStackTrace(); } } /** * 獲取Jedis實例 * * @return */ public synchronized static Jedis getJedis() { try { if (jedisPool != null) { Jedis resource = jedisPool.getResource(); return resource; } else { return null; } } catch (Exception e) { e.printStackTrace(); return null; } } /** * 釋放jedis資源 * * @param jedis */ public static void returnResource(final Jedis jedis) { if (jedis != null) { jedisPool.returnResource(jedis); } } /** * Jedis對象出異常的時候,回收Jedis對象資源 * * @param jedis */ public static void returnBrokenResource(final Jedis jedis) { if (jedis != null) { jedisPool.returnBrokenResource(jedis); } } /** * 通過Redis的key獲取值,並釋放連接資源 * @param key * @return 成功返回value,失敗返回null */ public static String get(String key) { Jedis jedis = null; String value = null; try { jedis = getJedis(); if (null != jedis) { value = jedis.get(key); } } catch (Exception e) { returnBrokenResource(jedis); e.printStackTrace(); } finally { returnResource(jedis); } return value; } /** * 向redis存入key和value(如果key已經存在 則覆蓋),並釋放連接資源 * @param key * @param value */ public static void set(String key, String value) { Jedis jedis = null; try { jedis = getJedis(); if (null != jedis) { jedis.set(key, value); } } catch (Exception e) { returnBrokenResource(jedis); e.printStackTrace(); } finally { returnResource(jedis); } } /** * 向redis存入key和value(如果key已經存在 則覆蓋),並且設置存活時間,及釋放連接資源 * @param key * @param value * @param seconds */ public static void set(String key, String value, int seconds) { Jedis jedis = null; try { jedis = getJedis(); if (null != jedis) { jedis.set(key, value); jedis.expire(key, seconds); } } catch (Exception e) { returnBrokenResource(jedis); e.printStackTrace(); } finally { returnResource(jedis); } } public static String byte2hex(byte[] buffer) { String h = "0x"; for (byte aBuffer : buffer) { String temp = Integer.toHexString(aBuffer & 0xFF); if (temp.length() == 1) { temp = "0" + temp; } h = h + " " + temp; } return h; } }