從文本文件讀取json

Question

我試圖制作一個從Web服務讀取json的應用程序，將其保存到文件中，然后讀取該文件並解析json。

保存文件的原因是我將讀取多個具有相同布局的json源。

碼：

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();
    }
}

我似乎收到錯誤： org.json.JSONException: Value The of type java.lang.String cannot be converted to JSONObject

編輯：添加了json文件：

{"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."}]}]}]}]}

我在做什么錯？

Answer 1

我有一個類似的問題。 記錄並檢查您從JSON獲得的內容。 如果您的JSON無效，那么僅修復文件即可，但是如果您的JSON有效，請嘗試按以下方式更改行：（遞增並嘗試直到substring（5））

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

Answer 2

也許您的sText變量附加了一些字符，這使您的JSON字符串無效。 打印sText並在http://jsonformatter.curiousconcept.com上進行驗證。

Answer 3

您的sText在json中的格式不正確，請在解析前對其進行驗證