Java - 通过json迭代获取值

Question

我在这里尝试做的是迭代从API调用获得的Json对象，以便搜索与Key相关的值。 但是我无法从每次迭代中获得元组。 从以下代码：

public void findResponseValue(String param, String inputValue){

    ArrayList<String> jsonArray = response.getBody().jsonPath().get("");
    Iterator<String> iterator = jsonArray.iterator();

    while(iterator.hasNext()){
        System.out.println(iterator.next());
        iterator.next();

    }

我收到以下错误

java.lang.ClassCastException：类java.util.HashMap无法强制转换为java.lang.String类（java.util.HashMap和java.lang.String位于loader'bootstrap'的模块java.base中）

它正确地遍历arrayList，但它尝试从中获取值失败。

---

响应机构示例

[
{
    "creationDate": "2017-05-29T07:45:43Z",
    "createdBy": "YYY.YYY",
    "lastUpdate": "2018-09-26T10:10:12Z",
    "updatedBy": "XXX.XXX",
    "id": 22,
    "partner": "ALS",
    "countries": [

    ],
    "countriesCodes": "NL",
    "salesChannels": [
        {
            "code": "Integrated"
        }
    ],
    "touchPoints": [

    ],
    "serviceEntity": "AWPNL",
    "flag": false,
    "activated": true,
    "type": "dcx"
},
{
    "creationDate": "2017-06-01T13:22:29Z",
    "createdBy": "YYY.YYY",
    "lastUpdate": "2017-11-30T12:24:36Z",
    "updatedBy": "MMM.T.NNN",
    "id": 39,
    "partner": "ALS",
    "countries": [

    ],
    "countriesCodes": "ES",
    "salesChannels": [
        {
            "code": "Integrated"
        }
    ],
    "touchPoints": [

    ],
    "serviceEntity": "AWPES",
    "flag": false,
    "activated": true,
    "type": "dcx"
}
]

Answer 1

您的回复机构应如下所示：

{"data":[
{
    "creationDate": "2017-05-29T07:45:43Z",
    "createdBy": "YYY.YYY",
    "lastUpdate": "2018-09-26T10:10:12Z",
    "updatedBy": "XXX.XXX",
    "id": 22,
    "partner": "ALS",
    "countries": [

    ],
    "countriesCodes": "NL",
    "salesChannels": [
        {
            "code": "Integrated"
        }
    ],
    "touchPoints": [

    ],
    "serviceEntity": "AWPNL",
    "flag": false,
    "activated": true,
    "type": "dcx"
},
{
    "creationDate": "2017-06-01T13:22:29Z",
    "createdBy": "YYY.YYY",
    "lastUpdate": "2017-11-30T12:24:36Z",
    "updatedBy": "MMM.T.NNN",
    "id": 39,
    "partner": "ALS",
    "countries": [

    ],
    "countriesCodes": "ES",
    "salesChannels": [
        {
            "code": "Integrated"
        }
    ],
    "touchPoints": [

    ],
    "serviceEntity": "AWPES",
    "flag": false,
    "activated": true,
    "type": "dcx"
}
]}

这是我使用的方法（使用Gson解析器API）。 在for循环中，您可以比较您的键或值。

    public static void findResponseValue(String param, String inputValue){

         JsonObject jsonObject = new JsonParser().parse(jsonResponseBody).getAsJsonObject();
         JsonElement jsonElement = jsonObject.get("data");
         JsonArray jsonArray = jsonElement.getAsJsonArray();

         for (int i = 0; i < jsonArray.size(); i++) {
            System.out.println(i+". Array element Content:"+jsonArray.get(i));

            JsonObject jsonObj = jsonArray.get(i).getAsJsonObject();

            System.out.println("\t creationDate:"+jsonObj.get("creationDate")+" partner:"+jsonObj.get("partner"));

         }       
    }