我需要将一个哈希对象转储到
JSON,我想知道这三个中的哪一个,to_json,JSON.generate或JSON.dump,是首选方法.
我已经测试了这些方法的结果,它们是相同的：
> {a: 1,b: 2}.to_json
=> "{\"a\":1,\"b\":2}"
> JSON.generate({a: 1,b: 2})
=> "{\"a\":1,\"b\":2}"
> JSON.dump({a: 1,\"b\":2}"
解决方法
从
docs开始：
JSON.generateonly allows objects or arrays to be converted to JSON Syntax.to_json,however,accepts many Ruby classes even though it acts only as a method for serialization
和
[
JSON.dumps] is part of the implementation of the load/dump interface of Marshal and YAML.If
anIO(anIO-like object or an object that responds to the write method) was given,the resulting JSON is written to it.