java 将 JSONObject 转换为 List<JSONObject> 或将字符串转换为 List<JSONObject>
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Convert JSONObject to List<JSONObject> or a String to List<JSONObject>
提问by Aishwarya Garg
I submit a query from my Java application, which upon running on Elasticsearch server returns the result in the form of a string. I want the result as a list of JSONObjectobjects. I can convert the string to a JSONObjectusing JSONObject jsonResponse = new JSONObject(responseString).
我从我的 Java 应用程序提交了一个查询，它在 Elasticsearch 服务器上运行时以字符串的形式返回结果。我想要结果作为JSONObject对象列表。我可以将字符串转换为JSONObjectusing JSONObject jsonResponse = new JSONObject(responseString)。
Is there any method by which I can get this in the form of a List<JSONObject>?
有什么方法可以让我以 a 的形式获得它List<JSONObject>？
回答by Victor Dodon
Instead of using JSONObject you may use JSONArray. If you really need to convert it to a List you may do something like:
您可以使用JSONArray代替 JSONObject 。如果您确实需要将其转换为 List，您可以执行以下操作：
List<JSONObject> list = new ArrayList<JSONObject>();
try {
int i;
JSONArray array = new JSONArray(string);
for (i = 0; i < array.length(); i++)
list.add(array.getJSONObject(i);
} catch (JSONException e) {
System.out.println(e.getMessage());
}
回答by Vyacheslav
There is an answer of your question: https://stackoverflow.com/a/17037364/1979882
你的问题有答案：https: //stackoverflow.com/a/17037364/1979882
ArrayList<String> listdata = new ArrayList<String>();
JSONArray jArray = (JSONArray)jsonObject;
if (jArray != null) {
for (int i=0;i<jArray.length();i++){
listdata.add(jArray.get(i).toString());
}
}
回答by itssaifurrehman
This method is really easy and works too
这个方法真的很简单，也很管用
try {
JSONObject jsonObject = new JSONObject(THESTRINGHERE);
String[] names = JSONObject.getNames(jsonObject);
JSONArray jsonArray = jsonObject.toJSONArray(new JSONArray(names));
ArrayList<String> listdata = new ArrayList<String>();
JSONArray jArray = (JSONArray)jsonArray;
if (jArray != null) {
for (int i=0;i<jArray.length();i++){
listdata.add(jArray.get(i).toString());
}
}
// System.out.println(listdata);
} catch (Exception e) {
System.out.println(e.getMessage());
}
