Jedis close问题

 

详情请参考：   https://github.com/xetorthio/jedis/wiki/Getting-started

 

使用jedis连接池时要注意进行 jedis.close()，否则会造成连接使用完毕后不能归还给连接池。

 

 

一种方式是 使用   try-with-resources statement  方式

           （       try-with-resources statement  请参考：https://www.cnblogs.com/memory4young/p/example-of-try-with-resources-statement.html ）

try() 中的资源会自动被关闭。

 

/// Jedis implements Closeable. Hence, the jedis instance will be auto-closed after the last statement.
try (Jedis jedis = pool.getResource()) {
  /// ... do stuff here ... for example
  jedis.set("foo", "bar");
  String foobar = jedis.get("foo");
  jedis.zadd("sose", 0, "car"); jedis.zadd("sose", 0, "bike"); 
  Set<String> sose = jedis.zrange("sose", 0, -1);
}
/// ... when closing your application:
pool.close();

 

 

 

 

另一种方式  手工 close：

如果你不能使用   try-with-resource, 你可以手工进行 Jedis.close().

Jedis jedis = null;
try {
  jedis = pool.getResource();
  /// ... do stuff here ... for example
  jedis.set("foo", "bar");
  String foobar = jedis.get("foo");
  jedis.zadd("sose", 0, "car"); jedis.zadd("sose", 0, "bike"); 
  Set<String> sose = jedis.zrange("sose", 0, -1);
} finally {

// You have to close jedis object. If you don't close then
// it doesn't release back to pool and you can't get a new
// resource from pool.

  if (jedis != null) {
    jedis.close();
  }
}
/// ... when closing your application:
pool.close();