如何使用包含空格的键从Redis获取值? [英] How to get values from Redis using keys which contains spaces?

问题描述

使用telnet，我输入像这样的命令行命令

Using telnet I type in command line commands like this

get field with spaces
get "field with spaces"
get 'field with spaces'

这三个都返回相同的错误.

And all this three return same error.

-ERR wrong number of arguments for 'get' command

推荐答案

如果只有telnet(而不是'redis-cli')，则需要使用Redis二进制安全统一协议在键名中使用空格，例如:

If you only have telnet (and not 'redis-cli'), then you need to use the Redis binary-safe unified protocol to use spaces in key names, for example:

telnet localhost 6379
*2
$3
GET
$17
field with spaces
hello (this is Redis answer if "field with spaces" contains value "hello")

Explanation:
*2 = Number of arguments (first arg is "GET" and second is "field with spaces")
$3 = length of first argument ("GET" contains 3 bytes)
$17 = length of second argument ("field with spaces" contains 17 bytes)

有关Redis二进制安全协议的更多信息: http://redis.io/topics/protocol

More information about Redis binary-safe protocol: http://redis.io/topics/protocol

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