JSONObject 和 JSONArray 的区别 [英] Difference between JSONObject and JSONArray

问题描述

在 Google 上短暂浏览后，我发现了这个 link 描述了差异，但从语法的角度来看.

After having a short look at Google I found this link that describes the difference, yet from a syntax point of view.

在编程场景中，什么时候会优先选择一个?

When would one be preferred over the other in a programming scenario?

推荐答案

当您在 Android 中处理 JSON 数据时，您将使用 JSONArray 来解析以数组括号开头的 JSON.JSON 中的数组用于组织相关项目的集合(可能是 JSON 对象).
例如:[{"name":"item 1"},{"name": "item2} ]

When you are working with JSON data in Android, you would use JSONArray to parse JSON which starts with the array brackets. Arrays in JSON are used to organize a collection of related items (Which could be JSON objects).
For example: [{"name":"item 1"},{"name": "item2} ]

另一方面，在处理以花括号开头的 JSON 时，您将使用 JSONObject.JSON 对象通常用于包含与一项相关的键/值对.例如:{"name": "item1", "description":"a JSON object"}

On the other hand, you would use JSONObject when dealing with JSON that begins with curly braces. A JSON object is typically used to contain key/value pairs related to one item. For example: {"name": "item1", "description":"a JSON object"}

当然，JSON 数组和对象可以相互嵌套.一个常见的例子是一个 API，它返回一个 JSON 对象，其中包含一些元数据以及与您的查询匹配的项目数组:

Of course, JSON arrays and objects may be nested inside one another. One common example of this is an API which returns a JSON object containing some metadata alongside an array of the items matching your query:

{"startIndex": 0, "data": [{"name":"item 1"},{"name": "item2"} ]}

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