Question

这是我从网址获取的json

{
responce: "success",
data: [
        {
        Breakfast: [
            {
                food_interval: "Breakfast",
                id: "1",
                menu_creator_id: "1",
                item_code: "13",
                food_interval_category_id: "1",
                food_interval_category: "Main Item",
                item_name: "Methi thepal",
                item_quantity: "1",
                unit_id: "1",
                unit_desc: "Number"
            },
            {
                food_interval: "Breakfast",
                id: "2",
                menu_creator_id: "1",
                item_code: "14",
                food_interval_category_id: "2",
                food_interval_category: "Cereals",
                item_name: "Museli",
                item_quantity: "1",
                unit_id: "7",
                unit_desc: "Bowl "
            },
            {
                food_interval: "Breakfast",
                id: "3",
                menu_creator_id: "1",
                item_code: "15",
                food_interval_category_id: "8",
                food_interval_category: "Bread",
                item_name: "Brown Bread",
                item_quantity: "2",
                unit_id: "1",
                unit_desc: "Number"
            },
            {
                food_interval: "Breakfast",
                id: "4",
                menu_creator_id: "1",
                item_code: "16",
                food_interval_category_id: "21",
                food_interval_category: "Butter Cheese",
                item_name: "Cheddar Cheese",
                item_quantity: "1",
                unit_id: "3",
                unit_desc: "Gram"
             }
           ]
        }
    ]
}

我试过的代码：

String result = response.body().string();
JSONObject jsonObject = new JSONObject(result);
JSONArray foodintervalarray = jsonObject.getJSONArray("data");
for(int i = 0 ; i < foodintervalarray.length(); i++){
    JSONObject jsonObject1 = foodintervalarray.getJSONObject(i);
    JSONArray breakfast = jsonObject1.getJSONArray("Breakfast");
    for(int j = 0 ; j < breakfast.length(); j++){
        JSONObject jsonObject2 = breakfast.getJSONObject(j);
        String breakFastMenu = jsonObject2.getString("food_interval");
        Log.i("breakFastMenu","breakFastMenu "+breakFastMenu);
    }

但是我得到了：没有找到早餐阵列的价值。在数据数组之后有一个{，所以我需要在调用JsonArray之前调用JsonObject吗？任何人都可以建议我做什么

由于

Answer 1

这是一种不正确的JSON格式。你必须用＃34;标志。首先，试试这个。

在此测试：http://jsonlint.com/

例如，这是正确的

{
    "responce": "success",
    "data": [{
        "Breakfast": [{
            "food_interval": "Breakfast"
        }]
    }]
}

修改

import org.json.JSONArray; import org.json.JSONObject; public class tst { public static void main(String[] args) { // TODO Auto-generated method stub final String result = "{\"responce\":\"success\",\"data\":[{\"Breakfast\":[{\"food_interval\":\"Breakfast\",\"id\":\"1\",\"menu_creator_id\":\"1\",\"item_code\":\"13\",\"food_interval_category_id\":\"1\",\"food_interval_category\":\"Main Item\",\"item_name\":\"Methi thepal\",\"item_quantity\":\"1\",\"unit_id\":\"1\",\"unit_desc\":\"Number\"},{\"food_interval\":\"Breakfast\",\"id\":\"2\",\"menu_creator_id\":\"1\",\"item_code\":\"14\",\"food_interval_category_id\":\"2\",\"food_interval_category\":\"Cereals\",\"item_name\":\"Museli\",\"item_quantity\":\"1\",\"unit_id\":\"7\",\"unit_desc\":\"Bowl \"},{\"food_interval\":\"Breakfast\",\"id\":\"3\",\"menu_creator_id\":\"1\",\"item_code\":\"15\",\"food_interval_category_id\":\"8\",\"food_interval_category\":\"Bread\",\"item_name\":\"Brown Bread\",\"item_quantity\":\"2\",\"unit_id\":\"1\",\"unit_desc\":\"Number\"},{\"food_interval\":\"Breakfast\",\"id\":\"4\",\"menu_creator_id\":\"1\",\"item_code\":\"16\",\"food_interval_category_id\":\"21\",\"food_interval_category\":\"Butter Cheese\",\"item_name\":\"Cheddar Cheese\",\"item_quantity\":\"1\",\"unit_id\":\"3\",\"unit_desc\":\"Gram\"}],\"10 A. M\":[{\"food_interval\":\"10 A. M\",\"id\":\"\",\"menu_creator_id\":\"\",\"item_code\":\"\",\"food_interval_category_id\":\"\",\"food_interval_category\":\"\",\"item_name\":\"\",\"item_quantity\":\"\",\"unit_id\":\"\",\"unit_desc\":\"\"}],\"11.30 Soup\":[{\"food_interval\":\"11.30 Soup\",\"id\":\"5\",\"menu_creator_id\":\"5\",\"item_code\":\"9\",\"food_interval_category_id\":\"13\",\"food_interval_category\":\"Soup\",\"item_name\":\"Carrot Soup\",\"item_quantity\":\"1\",\"unit_id\":\"7\",\"unit_desc\":\"Bowl \"}],\"Lunch\":[{\"food_interval\":\"Lunch\",\"id\":\"6\",\"menu_creator_id\":\"6\",\"item_code\":\"15\",\"food_interval_category_id\":\"9\",\"food_interval_category\":\"Chapati\",\"item_name\":\"Brown Bread\",\"item_quantity\":\"4\",\"unit_id\":\"1\",\"unit_desc\":\"Number\"}],\"3.30 PM\":[{\"food_interval\":\"3.30 PM\",\"id\":\"\",\"menu_creator_id\":\"\",\"item_code\":\"\",\"food_interval_category_id\":\"\",\"food_interval_category\":\"\",\"item_name\":\"\",\"item_quantity\":\"\",\"unit_id\":\"\",\"unit_desc\":\"\"}],\"7 pm Soup\":[{\"food_interval\":\"7 pm Soup\",\"id\":\"\",\"menu_creator_id\":\"\",\"item_code\":\"\",\"food_interval_category_id\":\"\",\"food_interval_category\":\"\",\"item_name\":\"\",\"item_quantity\":\"\",\"unit_id\":\"\",\"unit_desc\":\"\"}],\"Dinner\":[{\"food_interval\":\"Dinner\",\"id\":\"\",\"menu_creator_id\":\"\",\"item_code\":\"\",\"food_interval_category_id\":\"\",\"food_interval_category\":\"\",\"item_name\":\"\",\"item_quantity\":\"\",\"unit_id\":\"\",\"unit_desc\":\"\"}]}]}"; JSONObject jsonObject = new JSONObject(result); JSONArray foodintervalarray = jsonObject.getJSONArray("data"); for(int i = 0 ; i < foodintervalarray.length(); i++){ JSONObject jsonObject1 = foodintervalarray.getJSONObject(i); JSONArray breakfast = jsonObject1.getJSONArray("Breakfast"); for(int j = 0 ; j < breakfast.length(); j++){ JSONObject jsonObject2 = breakfast.getJSONObject(j); String breakFastMenu = jsonObject2.getString("food_interval"); System.out.println("breakFastMenu "+breakFastMenu); } } } }

我测试了这个JSON。但如果我使用JSOUP，我会收到403错误：

final String result = Jsoup.connect("http://dieto.vm1.in/api/menu_display_2d.php?date=2016/08/22&diet_type=6&food_category=1&class_type=1").ignoreHttpErrors(true).get().data();

您必须检查是否在代码中检索此JSON（而不是在浏览器中）。

Answer 2

检查http://jsonlint.com/的json有效性它现在不是一个有效的回应。

之后，创建相应的Response.java类并使用Gson解析它。只需根据您的响应编写Response.java实体。之后：

Gson gson = new GsonBuilder().create(); 
Response r = gson.fromJson(jsonString, Response.class);

有关更多示例，您可以按照本教程操作： http://rowsandcolumns.blogspot.com/2013/02/url-encode-http-get-solr-request-and.html

Answer 3

你的json file.html没有任何html标签只是你的json

JSONarray解析显示找不到值

3 个答案: