更改JSON对象的某些值 [英] Change certain value of a JSON object

问题描述

这是原始的JSON对象:

This is the raw JSON object:

{"num":11,"content":"puss\n","percentage":0}

我想用12替换11，即更改"num"的值.

I want to replace 11 with 12, namely change the value of "num".

{"num":12,"content":"puss\n","percentage":0}

请以Ruby语言对其进行描述.

Please describe it in Ruby language.

推荐答案

使用 JSON#dump :

require 'json'

raw_json = '{"num":11,"content":"puss\n","percentage":0}'
h = JSON.parse(raw_json)
h['num'] += 1
JSON.dump(h)  # => '{"num":12,"content":"puss\n","percentage":0}'

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