布尔值是否有效 JSON [英] Are booleans valid JSON

问题描述

为什么一些 JSON 验证器将布尔值标记为无效 JSON，而另一些则标记为有效?也就是说，只有 true 或 false 值(无对象).

Why do some JSON validators flag a boolean value as invalid JSON, and others as valid? That is, just true or false values (no object).

有效:

• http://jsonlint.com/
• http://codebeautify.org/jsonvalidator

无效:

• https://jsonformatter.curiousconcept.com/

推荐答案

您链接到的验证器根据 RFC 4627，它规定 JSON 字符串的根是数组或对象:

The validator you link to validates the JSON string existing of a mere true as invalid according to RFC 4627, which dictates that the root of a JSON string is to be an array or object:

JSON 文本是一个序列化的对象或数组.

A JSON text is a serialized object or array.

 JSON-text = object / array

true 或 foo" 或 42 等未包装值不是 JSON 根据该 RFC.

An unwrapped value such as true or "foo" or 42 is not JSON according to that RFC.

它可以验证的其他 RFC，RFC 7159 和RFC 8259，认为上述示例有效，因为它不限制JSON文本到对象或数组，也允许values:

The other RFCs it can validate against, RFC 7159 and RFC 8259, deem the above examples valid as it does not constrain a JSON text to objects or arrays, but also allows values:

JSON 值必须是对象、数组、数字或字符串，或其中之一以下三个字面名称:

A JSON value MUST be an object, array, number, or string, or one of the following three literal names:

 false null true

并且由于前者(RFC 4627)被后两者(RFC 7159 分别为 8259)淘汰，true 是一个有效的 JSON 字符串.

And because the former (RFC 4627) is obsoleted by the latter two (RFC 7159 respectively 8259), true is a valid JSON string.

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