从文本文件读取json

Question

Im trying to make an app that reads json from a web service, saves it to a file and then reads the file and parses the json.

The reason for saving the file is that im going to read several json sources which all have the same layout.

Code:

public void lesstatusDescription(String sporingsnummer) {
    InputStream oFile;
    try {
        oFile = openFileInput(sporingsnummer + ".json");
        InputStreamReader oReader = new InputStreamReader(oFile);
        BufferedReader oBuffer = new BufferedReader(oReader);
        String sText = "";
        String sEachLine = "";
        while ((sEachLine = oBuffer.readLine()) != null) {
            sText += sEachLine;
        }
        oReader.close();
        final JSONObject object = new JSONObject(sText);
        JSONArray consignmentSet = object.getJSONArray("consignmentSet");
        Integer i = consignmentSet.length();
        TextView tv = (TextView)findViewById(R.id.textView);
        tv.setText(i.toString());

    } catch (Exception ex) {
        //handle exception here
        Toast.makeText(getApplicationContext(),ex.toString(),Toast.LENGTH_SHORT).show();
    }
}

I seem to get the error: org.json.JSONException: Value The of type java.lang.String cannot be converted to JSONObject

Edit : Added json file :

{"consignmentSet":[{"consignmentId":"70300490908546098","previousConsignmentId":"","totalWeightInKgs":0.0,"totalVolumeInDm3":1.2,"packageSet":[{"statusDescription":"","descriptions":[],"packageNumber":"RA608072968SG","previousPackageNumber":"","productName":"REKOMMANDERT BREV FRA UTLANDET","productCode":"2567","brand":"POSTEN","lengthInCm":32,"widthInCm":12,"heightInCm":3,"volumeInDm3":1.2,"weightInKgs":0.0,"dateOfReturn":"03.07.2013","recipientAddress":{"addressLine1":"","addressLine2":"","postalCode":"1458","city":"FJELLSTRAND","countryCode":"NO","country":"Norway"},"eventSet":[{"description":"Sendingen er utlevert","status":"DELIVERED","recipientSignature":{"name":""},"unitId":"171108","unitType":"BRING","postalCode":"1450","city":"NESODDTANGEN","countryCode":"NO","country":"Norway","dateIso":"2013-06-20T15:08:48+02:00","displayDate":"20.06.2013","displayTime":"15:08","consignmentEvent":false},{"description":"Sendingen er ankommet <a title=\"Her finner du Nesoddtangen postkontor\" href=\"https://www.posten.no/kundeservice/postkontor-info-iframe?enhetsnr=171108\" class=\"sporing-lightbox-postoffice\">Nesoddtangen postkontor</a>","status":"READY_FOR_PICKUP","recipientSignature":{"name":""},"unitId":"171108","unitInformationUrl":"http://fraktguide.bring.no/fraktguide/api/pickuppoint/id/171108","unitType":"BRING","postalCode":"1451","city":"NESODDTANGEN","countryCode":"NO","country":"Norway","dateIso":"2013-06-19T08:35:21+02:00","displayDate":"19.06.2013","displayTime":"08:35","consignmentEvent":false},{"description":"Sendingen er ankommet terminal og blir videresendt","status":"IN_TRANSIT","recipientSignature":{"name":""},"unitId":"032850","unitType":"BRING","postalCode":"0024","city":"OSLO","countryCode":"NO","country":"Norway","dateIso":"2013-06-18T16:37:13+02:00","displayDate":"18.06.2013","displayTime":"16:37","consignmentEvent":false,"definitions":[{"term":"terminal","explanation":"Brev, pakke eller godsterminal som benyttes til sortering  og omlasting av sendinger som er underveis til mottaker."}]},{"description":"Sendingen er tollbehandlet og sendes til mottaker.","status":"IN_TRANSIT","recipientSignature":{"name":""},"unitId":"032874","unitType":"BRING","postalCode":"0024","city":"OSLO","countryCode":"NO","country":"Norway","dateIso":"2013-06-18T13:44:56+02:00","displayDate":"18.06.2013","displayTime":"13:44","consignmentEvent":false,"definitions":[{"term":"mottaker","explanation":"En person eller firma som får en sending tilsendt er mottaker. Kalles også adressat. Det vil si den som avsender adresserer sendingen til."}]},{"description":"Sendingen er antatt tollpliktig og er sendt til tollbehandling","status":"CUSTOMS","recipientSignature":{"name":""},"unitId":"100838","unitType":"BRING","postalCode":"1470","city":"LØRENSKOG","countryCode":"NO","country":"Norway","dateIso":"2013-06-17T12:34:28+02:00","displayDate":"17.06.2013","displayTime":"12:34","consignmentEvent":false,"definitions":[{"term":"tollbehandling","explanation":"Bestiller du varer fra utlandet, for eksempel på utenlandske nettsteder, må du fortolle varene. Vi utfører denne tjenesten for deg. \r\nSkal du sende varer utenfor Norges grenser, må sendingene først tollbehandles. Avhengig av vareverdi og innhold kan det kreves at sendingen eksportdeklareres (fortolles)."},{"term":"antatt tollpliktig","explanation":"En sending som antas å ha tollpliktig innhold. Sendingen går videre til tollkontroll. Det betyr ikke nødvendigvis at mottaker må betale toll eller moms, men sendingen blir kontrollert for å avgjøre dette. "}]},{"description":"Sendingen er ankommet mottakerlandet","status":"INTERNATIONAL","recipientSignature":{"name":""},"unitId":"100838","unitType":"BRING","postalCode":"","city":"OSLO LETTER CENTER","countryCode":"NO","country":"Norway","dateIso":"2013-06-17T11:41:48+02:00","displayDate":"17.06.2013","displayTime":"11:41","consignmentEvent":false},{"description":"Sendingen er sendt fra avsenderland","status":"INTERNATIONAL","recipientSignature":{"name":""},"unitId":"032858","unitType":"BRING","postalCode":"","city":"SINGAPORE SØ5","countryCode":"SG","country":"Singapore","dateIso":"2013-06-14T11:22:00+02:00","displayDate":"14.06.2013","displayTime":"11:22","consignmentEvent":false,"definitions":[{"term":"avsenderland","explanation":"Det landet en sendingen er innlevert og sendt ifra."}]},{"description":"Sendingen er ankommet eksportterminal","status":"INTERNATIONAL","recipientSignature":{"name":""},"unitId":"032858","unitType":"BRING","postalCode":"","city":"SINGAPORE SØ5","countryCode":"SG","country":"Singapore","dateIso":"2013-06-13T21:06:00+02:00","displayDate":"13.06.2013","displayTime":"21:06","consignmentEvent":false},{"description":"Sendingen er sendt fra avsenderland","status":"INTERNATIONAL","recipientSignature":{"name":""},"unitId":"032858","unitType":"BRING","postalCode":"","city":"SINGAPORE SØ5","countryCode":"SG","country":"Singapore","dateIso":"2013-06-13T21:06:00+02:00","displayDate":"13.06.2013","displayTime":"21:06","consignmentEvent":false,"definitions":[{"term":"avsenderland","explanation":"Det landet en sendingen er innlevert  og sendt ifra."}]}]}]}]}

What im i doing wrong ?

Answer 1

I had a similar problem. Log and check what you get from the JSON. If your JSON is not valid, it won't work just fix your file but if your json is valid, try changing your line like this: (increment and try till substring(5))

final JSONObject object = new JSONObject(sText.substring(1));

Answer 2

Perhaps Your sText variable is appending some character which is making you JSON string invalid. print sText and verify it on http://jsonformatter.curiousconcept.com .

Answer 3

您的sText在json中的格式不正确，请在解析前对其进行验证