帮我用java 代码写一个 redis 分布式锁可以吗？

当然可以！以下是样例代码：

public class RedisDistributedLock {

      private static final int DEFAULT_EXPIRY_TIME_MS = 60 * 1000;
    
      private RedisTemplate<String, String> redisTemplate;
    
      private String lockKey;
    
      private String lockValue;
    
      private int lockExpiryTimeMs;
    
      public RedisDistributedLock(RedisTemplate<String, String> redisTemplate, String lockKey, String lockValue, int lockExpiryTimeMs) {
          this.redisTemplate = redisTemplate;
          this.lockKey = lockKey;
          this.lockValue = lockValue;
          this.lockExpiryTimeMs = lockExpiryTimeMs;
      }
    
      public RedisDistributedLock(RedisTemplate<String, String> redisTemplate, String lockKey, String lockValue) {
          this(redisTemplate, lockKey, lockValue, DEFAULT_EXPIRY_TIME_MS);
      }
    
      public boolean acquireLock() {
          return redisTemplate.opsForValue().setIfAbsent(lockKey, lockValue, Duration.ofMillis(lockExpiryTimeMs));
      }
    
      public void releaseLock() {
          String value = redisTemplate.opsForValue().get(lockKey);
          if (value != null && value.equals(lockValue)) {
              redisTemplate.delete(lockKey);
          }
      }
}

希望以上代码能够帮助你实现一个 Redis 分布式锁！