今天发现，使用redis-py从redis中获取的数据竟然是加密的。

conn = redis.Redis(host='redis_serverip', port=6379, password='redis_password', db=0)conn.set('string-key1', 'value1')result = conn.get('string-key1')print('result:', result)print('result type:', type(result))print()result_decoded = result.decode('utf-8')print('result_decoded:', result_decoded)print('result_decoded type:', type(result_decoded))print()result_str = str(result)print('result_str:', result_str)print('result_str type:', type(result_str))print()print('test int in redis...\n')conn.set('string-key2', 100)result = conn.get('string-key2')print('result:', result)print('result type:', type(result))print()result_decoded = int(result)print('result_decoded:', result_decoded)print('result_decoded type:', type(result_decoded))

输出:

result: b'value1'

result type: <class 'bytes'>

result_decoded: value1

result_decoded type: <class 'str'>

result_str: b'value1'

result_str type: <class 'str'>

test int in redis...

result: b'100'

result type: <class 'bytes'>

result_decoded: 100

result_decoded type: <class 'int'>

 

可以看出:

如果传入str，传出的是bytes，需要通过decode('utf-8')进行恢复。

如果传入int，传出的是bytes，需要通过int()进行恢复。

 

另一种解决办法是在创建redis client时，进行decode设置。

conn = redis.Redis(host='redis_serverip', port=6379, password='redis_password', db=0, decode_responses=True)conn.set('string-key3', 'value3')result = conn.get('string-key3')print('result:', result)print('result type:', type(result))print()print('test int in redis...\n')conn.set('string-key4', 100)result = conn.get('string-key4')print('result:', result)print('result type:', type(result))print()result_decoded = int(result)print('result_decoded:', result_decoded)print('result_decoded type:', type(result_decoded))

输出:

result: value3

result type: <class 'str'>

test int in redis...

result: 100

result type: <class 'str'>

result_decoded: 100

result_decoded type: <class 'int'>

这种情况下，str是正常的，int需要注意一下。

 

参考资料: