将json值从文件设置为redis [英] set json value from file to redis

问题描述

我有一个bash.sh脚本:

I have a bash.sh script:

#!/usr/bin/env bash

val=$(cat ../my-microservice/conf/config.json)

echo "set my-microservice-config ${val}" |  redis-cli

config.json:

where the config.json:

{
  "key" : "value"
}

当我运行它时，我得到了:

When I run it I got:

ERR未知命令'}'

ERR unknown command '}'

如何从json文件中正确设置json值?

How to set a json value properly from the json file?

推荐答案

如果您要设置 my-microservice-config键的em> string 值，最简单的方法是使用

If you are trying to set the string value of my-microservice-config key to the contents of your JSON file (or any other for that matter, including binary), the simplest approach is to use the -x option in redis-cli to read the last argument of the command verbatim, from stdin. For example:

$ redis-cli -x set my-microservice-config < config.json
OK

以您的示例为例，它将存储:

For your example, this will store:

$ redis-cli get my-microservice-config
"{\n      \"key\" : \"value\"\n}\n"

要存储JSON数据的紧凑表示形式，可以将 jq .与 标志:

To store the compact representation of your JSON data, you can use jq . with -c flag:

$ jq -c . config.json | redis-cli -x set my-microservice-config
OK
$ redis-cli get my-microservice-config
"{\"key\":\"value\"}\n"

请注意，Redis本身不支持JSON，但是如果您需要，可以使用 ReJSON模块 解释的JSON值(JSON数据类型).

Note that Redis does not natively support JSON, but there's the ReJSON module you can use if you need interpreted JSON values (JSON datatype).

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