JSONArray不能在java中转换为JSONObject

Question

{
"categories": {
    "category": [
        {
            "label": "Collaboration",
            "thumbnail": "http://mywebite.com/dfsv",
            "description": "...",
            "contents": {
                "@attributes": {
                    "count": "79"
                }
            },
            "@attributes": {
                "id": "ZSQYN2"
            }
        },
        {
            "label": "Communication",
            "thumbnail": "http://mywebite.com/dfsv",
            "description": "...",
            "contents": {
                "@attributes": {
                    "count": "43"
                }
            },
            "@attributes": {
                "id": "uGQ9MC"
            }
        }
    ],
    "@attributes": {
        "page": "12",
        "limit": "0",
        "count": "111",
        "lang": "en"
    }
}

}

我正在使用以下代码：

JSONObject obj = new JSONObject(myString);

我得到了一条错误消息：

JSONArray obj = new JSONArray(myString);

Answer 1

JSONArray和JSONObject是两个不同的东西，它们不应该彼此类型兼容，所以这些错误是有意义的。这是一个JSONArray：

[“foo”,“bar”,“baz”]

这是一个JSONObject：