判断 JSON 是 JSONObject 还是 JSONArray [英] Determine whether JSON is a JSONObject or JSONArray

问题描述

我将从服务器接收 JSON 对象或数组，但我不知道它会是哪一个.我需要使用 JSON，但要这样做，我需要知道它是对象还是数组.

I am going to receive either a JSON Object or Array from server, but I have no idea which it will be. I need to work with the JSON, but to do so, I need to know if it is an Object or an Array.

我正在使用 Android.

I am working with Android.

有没有人有这样做的好方法?

Does any one have a good way of doing this?

推荐答案

我找到了更好的确定方法:

I found better way to determine:

String data = "{ ... }";
Object json = new JSONTokener(data).nextValue();
if (json instanceof JSONObject)
  //you have an object
else if (json instanceof JSONArray)
  //you have an array

tokenizer 能够返回更多类型:http://developer.android.com/reference/org/json/JSONTokener.html#nextValue()

tokenizer is able to return more types: http://developer.android.com/reference/org/json/JSONTokener.html#nextValue()

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