将JsonArray添加到JsonObject

Question

今天我搜索了很多关于这个主题的文章.但我找不到它,如何将JSONArray添加到JSONObject？

因为每次我这样做我都会收到此错误:Stackoverflow

        JSONObject fillBadkamerFormaatFromContentlet(Structure structure, String formaat) {
    JSONObject jsonObject = new JSONObject();
    JSONArray arr = new JSONArray();

    BadkamerFormaat badkamerFormaat = new BadkamerFormaat();
    BadkamerTegel badkamerTegel;
    List<Contentlet> contentlets = getContentletsByStructure(structure);
    badkamerFormaat.formaat = formaat;
    badkamerFormaat.tegels = new ArrayList<BadkamerTegel>();

    try {
        jsonObject.put("formaat", formaat); 
    } catch (JSONException e1) {
        throw new RuntimeException(e1);
    }

    for(Contentlet contentlet : contentlets) {
        badkamerTegel = new BadkamerTegel();
        badkamerTegel.naam = contentlet.getStringProperty(ParameterNames.toolBetegelVeldNaam);
        try {
            badkamerTegel.afbeeldingTegel = contentlet.getBinary(ParameterNames.toolBetegelVeldTegelAfbeelding).getPath();
            badkamerTegel.afbeeldingBadkamer = contentlet.getBinary(ParameterNames.toolBetegelVeldBadkamerAfbeelding).getCanonicalPath();
            arr.put(badkamerTegel.toJSON());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }   
    }

    try {
        jsonObject.put("aoColumnDefs",arr);
    } catch (JSONException e) {
        throw new RuntimeException(e);
    }

    return jsonObject;          
}

我收到此错误:

java.lang.StackOverflowError
at com.dotmarketing.util.json.JSONArray.<init>(JSONArray.java:248)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)
at com.dotmarketing.util.json.JSONObject.put(JSONObject.java:953)

我想要的JSON:只有最后一个JsonArray出错了:

{
           "wand": [
        {
            formaat: 'vierkant15x15'
            tegels: [
                    {naam: '', imgThumb: '/bla/bla.png', largeImg: '/bla/bla2.png'}
                    ,{naam: '', imgThumb: '/bla/bla.png', largeImg: '/bla/bla2.png'}
                    ]
        }
        ,

        {
            formaat: 'vierkant17x15'
            tegels: [
                    {naam: '', imgThumb: '/bla/bla.png', largeImg: '/bla/bla2.png'}
                    ,{naam: '', imgThumb: '/bla/bla.png', largeImg: '/bla/bla2.png'}
                    ]
        }
    ]

,"vloer":[{formaat:'vierkant10x15'tegels:[{naam:'',imgThumb:'/ bla/bla.png',largeImg:'/ bla/bla2.png'},{naam:'', imgThumb:'/ bla/bla.png',largeImg:'/ bla/bla2.png'}]},

        {
            formaat: 'vierkant45x15'
            tegels: [
                    {naam: '', imgThumb: '/bla/bla.png', largeImg: '/bla/bla2.png'}
                    ,{naam: '', imgThumb: '/bla/bla.png', largeImg: '/bla/bla2.png'}
                    ]
        }
    ]

}

Answer 1

我认为这是你正在使用的API的一个问题(也就是bug.). JSONArrayimplements Collection(从中派生此API的json.org实现没有 JSONArray实现Collection).并且JSONObject有一个重载put()方法,它接受一个Collection并将其包装在一起JSONArray(从而导致问题).我认为您需要强制使用其他JSONObject.put()方法:

    jsonObject.put("aoColumnDefs",(Object)arr);

您应该向供应商提交错误,确定他们的JSONObject.put(String,Collection)方法已被破坏.

Answer 2

这是简单的代码

List <String> list = new ArrayList <String>();
list.add("a");
list.add("b");
JSONArray array = new JSONArray();
for (int i = 0; i < list.size(); i++) {
        array.put(list.get(i));
}
JSONObject obj = new JSONObject();
try {
    obj.put("result", array);
} catch (JSONException e) {
 // TODO Auto-generated catch block
e.printStackTrace();
}
pw.write(obj.toString());

Answer 3

您的清单：

List<MyCustomObject> myCustomObjectList;

你的 JSONArray：

// Don't need to loop through it. JSONArray constructor do it for you.
new JSONArray(myCustomObjectList)

你的回应：

return new JSONObject().put("yourCustomKey", new JSONArray(myCustomObjectList));

您的 post/put http 正文请求将是这样的：

    {
        "yourCustomKey: [
           {
               "myCustomObjectProperty": 1
           },
           {
               "myCustomObjectProperty": 2
           }
        ]
    }