[
{
"ID": 1,
"EventDate": "2014-10-10T00:00:00",
"EventName": "Geburtstagsparty Michael",
"EventDescription": "19.Geburtstag",
"ExchangeMoney": 345.5,
"Rent": null,
"CleanMoney": null,
"Earmarked": false,
"ResponsibleMember": {
"ID": "d3fbc332-99ab-49c8-8374-4ef192db78e4",
"Firstname": null,
"Lastname": "Aigner",
"Birthday": "0001-01-01T00:00:00",
"Telephonenumber": null,
"Street": null,
"PostalCode": null,
"City": null,
"Username": null,
"Password": null,
"eMail": null
},
"EventType": "Geburtstagsparty"
},
{
"ID": 2,
"EventDate": "2014-12-31T00:00:00",
"EventName": "Silvesterparty",
"EventDescription": "Happy new Year!",
"ExchangeMoney": 551.2,
"Rent": null,
"CleanMoney": null,
"Earmarked": false,
"ResponsibleMember": {
"ID": "d3fbc332-99ab-49c8-8374-4ef192db78e4",
"Firstname": null,
"Lastname": "Aigner",
"Birthday": "0001-01-01T00:00:00",
"Telephonenumber": null,
"Street": null,
"PostalCode": null,
"City": null,
"Username": null,
"Password": null,
"eMail": null
},
"EventType": "Feiertags-Feier"
}
]
我的Logcat说：
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ org.json.JSONException: Value [{"ID":1,"EventDate":"2014-10-10T00:00:00","EventName":"Geburtstagsparty Michael","EventDescription":"19.Geburtstag","ExchangeMoney":345.5000,"Rent":null,"CleanMoney":null,"Earmarked":false,"ResponsibleMember":{"ID":"d3fbc332-99ab-49c8-8374-4ef192db78e4","Firstname":null,"Lastname":"Aigner","Birthday":"0001-01-01T00:00:00","Telephonenumber":null,"Street":null,"PostalCode":null,"City":null,"Username":null,"Password":null,"eMail":null},"EventType":"Geburtstagsparty"},{"ID":2,"EventDate":"2014-12-31T00:00:00","EventName":"Silvesterparty","EventDescription":"Happy new Year!","ExchangeMoney":551.2000,"Rent":null,"CleanMoney":null,"Earmarked":false,"ResponsibleMember":{"ID":"d3fbc332-99ab-49c8-8374-4ef192db78e4","Firstname":null,"Lastname":"Aigner","Birthday":"0001-01-01T00:00:00","Telephonenumber":null,"Street":null,"PostalCode":null,"City":null,"Username":null,"Password":null,"eMail":null},"EventType":"Feiertags-Feier"}] of type java.lang.String cannot be converted to JSONArray
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at org.json.JSON.typeMismatch(JSON.java:111)
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at org.json.JSONArray.<init>(JSONArray.java:96)
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at org.json.JSONArray.<init>(JSONArray.java:108)
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at aignerkatzlberger.htlgrieskirchen.at.jugendraumapp.database.DataRepository.insertEvents(DataRepository.java:58)
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at aignerkatzlberger.htlgrieskirchen.at.jugendraumapp.database.DataRepository.access$000(DataRepository.java:32)
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at aignerkatzlberger.htlgrieskirchen.at.jugendraumapp.database.DataRepository$RequestTask.onPostExecute(DataRepository.java:134)
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at aignerkatzlberger.htlgrieskirchen.at.jugendraumapp.database.DataRepository$RequestTask.onPostExecute(DataRepository.java:91)
12-18 23:58:02.132 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at android.os.AsyncTask.finish(AsyncTask.java:632)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at android.os.AsyncTask.access$600(AsyncTask.java:177)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:645)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at android.os.Handler.dispatchMessage(Handler.java:102)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at android.os.Looper.loop(Looper.java:136)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at android.app.ActivityThread.main(ActivityThread.java:5146)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at java.lang.reflect.Method.invokeNative(Native Method)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at java.lang.reflect.Method.invoke(Method.java:515)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:796)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:612)
12-18 23:58:02.142 14399-14399/aignerkatzlberger.htlgrieskirchen.at.jugendraumapp W/System.err﹕ at dalvik.system.NativeStart.main(Native Method)
正如您在图片中看到的那样，如果我想将JSON字符串转换为JSONException，我会得到JSONArray。我不明白，因为有几个在线测试说我的JSON是有效的。
此外，我必须使用JSONArray作为根元素，因为有＆＃34; [＆＃34;根级括号。
那么我做错了什么？
private void insertEvents(String result)
{
if(result.equals("-1"))
{
handleError();
}
else
{
try
{
// make JSON object
JSONArray jArr = new JSONArray(result);
}
catch (Exception e)
{
// TODO: handle
}
}
}
答案 0 :(得分：1)
我能够使用以下代码重现您的问题：
String s = "'[{ \"ID\": 1, \"EventDate\": \"2014-10-10T00:00:00\", \"EventName\": \"Geburtstagsparty Michael\", \"EventDescription\": \"19.Geburtstag\", \"ExchangeMoney\": 345.5, \"Rent\": null, \"CleanMoney\": null, \"Earmarked\": false, \"ResponsibleMember\": { \"ID\": \"d3fbc332-99ab-49c8-8374-4ef192db78e4\", \"Firstname\": null, \"Lastname\": \"Aigner\", \"Birthday\": \"0001-01-01T00:00:00\", \"Telephonenumber\": null, \"Street\": null, \"PostalCode\": null, \"City\": null, \"Username\": null, \"Password\": null, \"eMail\": null }, \"EventType\": \"Geburtstagsparty\" }, { \"ID\": 2, \"EventDate\": \"2014-12-31T00:00:00\", \"EventName\": \"Silvesterparty\", \"EventDescription\": \"Happy new Year!\", \"ExchangeMoney\": 551.2, \"Rent\": null, \"CleanMoney\": null, \"Earmarked\": false, \"ResponsibleMember\": { \"ID\": \"d3fbc332-99ab-49c8-8374-4ef192db78e4\", \"Firstname\": null, \"Lastname\": \"Aigner\", \"Birthday\": \"0001-01-01T00:00:00\", \"Telephonenumber\": null, \"Street\": null, \"PostalCode\": null, \"City\": null, \"Username\": null, \"Password\": null, \"eMail\": null }, \"EventType\": \"Feiertags-Feier\" } ]'";
try {
JSONArray arr = new JSONArray(s);
Log.d(TAG, arr.toString());
} catch (JSONException e) {
e.printStackTrace();
}
请注意，我将整个JSON字符串括在单引号中，因此我非常怀疑您的result变量也是如此。删除包含JSON的单引号解决了这个问题。
此外：请注意，您获得的错误是...of type java.lang.String cannot be converted to JSONArray。这意味着它将result视为一个字符串，如果result确实是一个JSON则不应该这样。这几乎只能意味着result是引号括起来的有效JSON，从而使JSON解析器认为它是一个字符串。