秒杀初交

src/main/java/com/itstyle/seckill/distributedlock/redis/RedissLockUtil.java

@@ -0,0 +1,101 @@
+package com.itstyle.seckill.distributedlock.redis;
+import java.util.concurrent.TimeUnit;
+
+import org.redisson.api.RLock;
+import org.redisson.api.RedissonClient;
+
+/**
+ * redis分布式锁帮助类
+ * @author 科帮网 By https://blog.52itstyle.com
+ */
+public class RedissLockUtil {
+    private static RedissonClient redissonClient;
+    
+    public void setRedissonClient(RedissonClient locker) {
+    	redissonClient = locker;
+    }
+    
+    /**
+     * 加锁
+     * @param lockKey
+     * @return
+     */
+    public static RLock lock(String lockKey) {
+    	RLock lock = redissonClient.getLock(lockKey);
+    	lock.lock();
+        return lock;
+    }
+
+    /**
+     * 释放锁
+     * @param lockKey
+     */
+    public static void unlock(String lockKey) {
+    	RLock lock = redissonClient.getLock(lockKey);
+		lock.unlock();
+    }
+    
+    /**
+     * 释放锁
+     * @param lock
+     */
+    public static void unlock(RLock lock) {
+    	lock.unlock();
+    }
+
+    /**
+     * 带超时的锁
+     * @param lockKey
+     * @param timeout 超时时间   单位：秒
+     */
+    public static RLock lock(String lockKey, int timeout) {
+    	RLock lock = redissonClient.getLock(lockKey);
+		lock.lock(timeout, TimeUnit.SECONDS);
+		return lock;
+    }
+    
+    /**
+     * 带超时的锁
+     * @param lockKey
+     * @param unit 时间单位
+     * @param timeout 超时时间
+     */
+    public static RLock lock(String lockKey, TimeUnit unit ,int timeout) {
+    	RLock lock = redissonClient.getLock(lockKey);
+		lock.lock(timeout, unit);
+		return lock;
+    }
+    
+    /**
+     * 尝试获取锁
+     * @param lockKey
+     * @param waitTime 最多等待时间
+     * @param leaseTime 上锁后自动释放锁时间
+     * @return
+     */
+    public static boolean tryLock(String lockKey, int waitTime, int leaseTime) {
+        RLock lock = redissonClient.getLock(lockKey);
+		try {
+			return lock.tryLock(waitTime, leaseTime, TimeUnit.SECONDS);
+		} catch (InterruptedException e) {
+			return false;
+		}
+    }
+    
+    /**
+     * 尝试获取锁
+     * @param lockKey
+     * @param unit 时间单位
+     * @param waitTime 最多等待时间
+     * @param leaseTime 上锁后自动释放锁时间
+     * @return
+     */
+    public static boolean tryLock(String lockKey, TimeUnit unit, int waitTime, int leaseTime) {
+    	RLock lock = redissonClient.getLock(lockKey);
+		try {
+			return lock.tryLock(waitTime, leaseTime, unit);
+		} catch (InterruptedException e) {
+			return false;
+		}
+    }
+}