redission 提供lock方法总体可以归类：
void lock()void lock(long leaseTime, TimeUnit unit)void lockInterruptibly() //和lock一致 只是会抛出异常void lockInterruptibly(long leaseTime, TimeUnit unit)boolean tryLock()boolean tryLock(long waitTime, long leaseTime, TimeUnit unit)boolean tryLock(long waitTime, TimeUnit unit)
解锁unLock方法
public void unlock()
判断是否被锁方法
boolean isLocked() //是否持有锁boolean isHeldByCurrentThread() //是否被当前线程持有锁
