gem install json # rails 中不需要单独装了
require 'json'
file = File.read('./file-name-to-be-read.json')
data_hash = JSON.parse(file)
data = {}
data["books"] = ...
File.write('./sample-data.json', JSON.dump(data))
0. Installation. 安装及引入 json 1. Reading the file. 读取文件 2. ...
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本文标题：Ruby: How to read/write JSON Fil
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