redis java 2次封装
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package com.feng; import com.common.utils.SerializeUtil; import org.springframework.beans.factory.annotation.Autowired; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import java.util.ArrayList; import java.util.List; import java.util.Set; import java.util.TreeSet; public class JedisUtil { @Autowired protected static JedisPool jedisPool; private JedisUtil() {} /** * 简单的Get * @param <T> * @param key * @param requiredType * @return */ public static <T> T get(String key , Class<T>...requiredType){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] skey = SerializeUtil.serialize(key); return SerializeUtil.deserialize(jds.get(skey),requiredType); } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * 简单的set * @param key * @param value */ public static void set(Object key ,Object value){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] skey = SerializeUtil.serialize(key); byte[] svalue = SerializeUtil.serialize(value); jds.set(skey, svalue); } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } } /** * 过期时间的 * @param key * @param value * @param timer （秒） */ public static void setex(Object key, Object value, int timer) { Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] skey = SerializeUtil.serialize(key); byte[] svalue = SerializeUtil.serialize(value); jds.setex(skey, timer, svalue); } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } } /** * * @param <T> * @param mapkey map * @param key map里的key * @param requiredType value的泛型类型 * @return */ public static <T> T getVByMap(String mapkey,String key , Class<T> requiredType){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] mkey = SerializeUtil.serialize(mapkey); byte[] skey = SerializeUtil.serialize(key); List<byte[]> result = jds.hmget(mkey, skey); if(null != result && result.size() > 0 ){ byte[] x = result.get(0); T resultObj = SerializeUtil.deserialize(x, requiredType); return resultObj; } } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * * @param mapkey map * @param key map里的key * @param value map里的value */ public static void setVByMap(String mapkey,String key ,Object value){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] mkey = SerializeUtil.serialize(mapkey); byte[] skey = SerializeUtil.serialize(key); byte[] svalue = SerializeUtil.serialize(value); jds.hset(mkey, skey,svalue); } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } } /** * 删除Map里的值 * @param mapKey * @param dkey * @return */ public static Object delByMapKey(String mapKey ,String...dkey){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[][] dx = new byte[dkey.length][]; for (int i = 0; i < dkey.length; i++) { dx[i] = SerializeUtil.serialize(dkey[i]); } byte[] mkey = SerializeUtil.serialize(mapKey); Long result = jds.hdel(mkey, dx); return result; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return new Long(0); } /** * 往redis里取set整个集合 * * @param <T> * @param setKey * @param requiredType * @return */ public static <T> Set<T> getVByList(String setKey,Class<T> requiredType){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] lkey = SerializeUtil.serialize(setKey); Set<T> set = new TreeSet<T>(); Set<byte[]> xx = jds.smembers(lkey); for (byte[] bs : xx) { T t = SerializeUtil.deserialize(bs, requiredType); set.add(t); } return set; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * 获取Set长度 * @param setKey * @return */ public static Long getLenBySet(String setKey){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); Long result = jds.scard(setKey); return result; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * 删除Set * @param dkey * @return */ public static Long delSetByKey(String key,String...dkey){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); Long result = 0L; if(null == dkey){ result = jds.srem(key); }else{ result = jds.del(key); } return result; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return new Long(0); } /** * 随机 Set 中的一个值 * @param key * @return */ public static String srandmember(String key){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); String result = jds.srandmember(key); return result; } catch (Exception e){ isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * 往redis里存Set * @param setKey * @param value */ public static void setVBySet(String setKey,String value){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); jds.sadd(setKey, value); } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } } /** * 取set * @param key * @return */ public static Set<String> getSetByKey(String key){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); Set<String> result = jds.smembers(key); return result; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * 往redis里存List * @param listKey * @param value */ public static void setVByList(String listKey,Object value){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] lkey = SerializeUtil.serialize(listKey); byte[] svalue = SerializeUtil.serialize(value); jds.rpush(lkey, svalue); } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } } /** * 往redis里取list * * @param <T> * @param listKey * @param start * @param end * @param requiredType * @return */ public static <T> List<T> getVByList(String listKey,int start,int end,Class<T> requiredType){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] lkey = SerializeUtil.serialize(listKey); List<T> list = new ArrayList<T>(); List<byte[]> xx = jds.lrange(lkey,start,end); for (byte[] bs : xx) { T t = SerializeUtil.deserialize(bs, requiredType); list.add(t); } return list; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * 获取list长度 * @param listKey * @return */ public static Long getLenByList(String listKey){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] lkey = SerializeUtil.serialize(listKey); Long result = jds.llen(lkey); return result; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return null; } /** * 删除 * @param dkey * @return */ public static Long delByKey(String...dkey){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[][] dx = new byte[dkey.length][]; for (int i = 0; i < dkey.length; i++) { dx[i] = SerializeUtil.serialize(dkey[i]); } Long result = jds.del(dx); return result; } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return new Long(0); } /** * 判断是否存在 * @param existskey * @return */ public static boolean exists(String existskey){ Jedis jds = null; boolean isBroken = false; try { jds = jedisPool.getResource(); jds.select(0); byte[] lkey = SerializeUtil.serialize(existskey); return jds.exists(lkey); } catch (Exception e) { isBroken = true; e.printStackTrace(); } finally { returnResource(jds, isBroken); } return false; } /** * 释放 * @param jedis * @param isBroken */ public static void returnResource(Jedis jedis, boolean isBroken) { if (jedis == null) return; jedis.close(); } } package com.common.utils; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.Closeable; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import net.sf.json.JSONObject; public class SerializeUtil { static final Class<?> CLAZZ = SerializeUtil.class; public static byte[] serialize(Object value) { if (value == null) { throw new NullPointerException("Can't serialize null"); } byte[] rv = null; ByteArrayOutputStream bos = null; ObjectOutputStream os = null; try { bos = new ByteArrayOutputStream(); os = new ObjectOutputStream(bos); os.writeObject(value); os.close(); bos.close(); rv = bos.toByteArray(); } catch (Exception e) { LoggerUtils.fmtError(CLAZZ,e, "serialize error %s", JSONObject.fromObject(value)); } finally { close(os); close(bos); } return rv; } public static Object deserialize(byte[] in) { return deserialize(in, Object.class); } public static <T> T deserialize(byte[] in, Class<T>...requiredType) { Object rv = null; ByteArrayInputStream bis = null; ObjectInputStream is = null; try { if (in != null) { bis = new ByteArrayInputStream(in); is = new ObjectInputStream(bis); rv = is.readObject(); } } catch (Exception e) { LoggerUtils.fmtError(CLAZZ,e, "serialize error %s", in); } finally { close(is); close(bis); } return (T) rv; } private static void close(Closeable closeable) { if (closeable != null) try { closeable.close(); } catch (IOException e) { LoggerUtils.fmtError(CLAZZ, "close stream error"); } } } 阅读全文
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