DistributedLocks

基于db的分布式锁，实现，只支持Oracle和mysql

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DbDistributedLockFactory lockFactory = new DbDistributedLockFactory();

lockFactory.setDataSource(dataSource);

lockFactory.setExpireTime(5);

lockFactory.setPrefix("LOCK_");

AbstractDbDistributedLockTemple lock = lockFactory.buildDbDistributedLock();

.......

lock.tryLock(namespace,lockid);

lock.isLocked(namespace,lockid);

lock.updateLock(namespace,lockid);

lock.isLocked(namespace,lockid);