java - Json 数据无法正确从 URL 读取

Question

我正在尝试从 url 读取 Json 数据。以下 json 格式无法从链接中正确读取为 jsonObject。我已经实现了代码，但仍然出现错误。需要有关该错误的一些帮助。请注意，我没有创建任何模型类来解析 json 数据，而是直接从 URL 调用，然后在控制台中打印该 json 数据。

Json 数据:

[
    {
        "countryId": "BE",
        "vat": 0.21,
        "maxShortestEdge": 60,
        "maxMiddleEdge": 80,
        "maxLongestEdge": 200,
        "maxLengthGirth": 300,
        "maxWeight": 40,
        "languages": [
            "fr",
            "nl",
            "en"
        ],
        "defaultLanguage": "nl",
        "currency": {
            "id": "EUR",
            "messageId": "general.units.currency.eur"
        }
    },
    {
        "countryId": "DE",
        "vat": 0.19,
        "maxShortestEdge": 60,
        "maxMiddleEdge": 80,
        "maxLongestEdge": 200,
        "maxLengthGirth": 300,
        "maxWeight": 40,
        "languages": [
            "de",
            "en"
        ],
        "defaultLanguage": "de",
        "currency": {
            "id": "EUR",
            "messageId": "general.units.currency.eur"
        },
        "tracking": {
            "google": "UA-64686897-5",
            "facebook": "591925420983129"
        }
    },
    {
        "countryId": "LU",
        "vat": 0.17,
        "maxShortestEdge": 60,
        "maxMiddleEdge": 80,
        "maxLongestEdge": 200,
        "maxLengthGirth": 300,
        "maxWeight": 40,
        "languages": [
            "fr",
            "en"
        ],
        "defaultLanguage": "fr",
        "currency": {
            "id": "EUR",
            "messageId": "general.units.currency.eur"
        }
    }
]

实现的代码:

public class RestTest {

    public static void main(String[] args) {
        Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("proxy.xxxxx.com",8080));

        try {

            URL url = new URL("http://test.one.de/api/");
            HttpURLConnection  http = (HttpURLConnection)url.openConnection(proxy);
            InputStream ins = http.getInputStream();
            JsonParser jsonParser = new JsonParser();
            JsonObject jsonObject = (JsonObject)jsonParser.parse(new InputStreamReader(ins));
            System.out.println(jsonObject);
        } 
        catch (MalformedURLException e) 
        {
            e.printStackTrace();
        } catch (IOException e) {

            e.printStackTrace();
        }

    }

}

获取错误:

Exception in thread "main" com.google.gson.JsonSyntaxException: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 12 path $
    at com.google.gson.JsonParser.parse(JsonParser.java:65)
    at com.test.api.RestTest.main(RestTest.java:113)
Caused by: com.google.gson.stream.MalformedJsonException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 12 path $
    at com.google.gson.stream.JsonReader.syntaxError(JsonReader.java:1567)
    at com.google.gson.stream.JsonReader.checkLenient(JsonReader.java:1416)
    at com.google.gson.stream.JsonReader.doPeek(JsonReader.java:546)
    at com.google.gson.stream.JsonReader.peek(JsonReader.java:429)
    at com.google.gson.JsonParser.parse(JsonParser.java:60)
    ... 1 more

Answer 1

尝试使用JsonArray而不是JsonObject。您可以尝试读取字符串然后进行转换

String json = IOUtils.toString(ins, encoding);
JsonArray jsonArray = new JsonArray(json);