完全な出力を読むには？

Question

私はthisを解析する必要があります。私はretreived URLの応答をバッファに格納しています。しかし、私は受信したバッファを文字列に移動すると、私は壊れた出力を取得し、私はそれを解析することができません。しかし、私が変数lineを印刷すると、全体の応答が受信されるのがわかります。文字列のバッファオーバーフローですか？どのように私は、ラッパー関数が含まれているので、私はJSONReaderを使用することもできないと思うレスポンスを解析することができます！ここで

はコード -

URL url = new URL("http://chartapi.finance.yahoo.com/instrument/1.0/FB/chartdata;type=quote;range=1d/json"); 
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); 
try { 
    InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream()); 
    StringBuffer buffer = new StringBuffer(); 
    if (inputStream == null) return; 

    reader = new BufferedReader(new InputStreamReader(inputStream)); 

    String line; 
    while ((line = reader.readLine()) != null) { 
    //Log.d(TAG,line); 
    buffer.append(line + "\n"); 
    } 

    Log.d(TAG,buffer.length() +buffer.toString()); 
} 

Answer 1

あなたのコードで、しばらくの内部の任意System.out.printlnが正しく（変な）コンテンツを印刷させずに、あなたはを通過したリンクファイルの先頭に JSON形式しかしですあなたは

finance_charts_json_callback（

を持っています

これはJSON文字列の一部ではありません。

String jsonString = buffer.substring(30, buffer.length() - 2); 
JsonObject jobj = new Gson().fromJson(jsonString, JsonObject.class); 

は今、あなたはJSonObjectを持っているので、あなたは、属性名によってそれを参照することができます：

正しいデータを得るために

---

、高速な回避策は、この文字と最後の括弧を無視しています

System.out.println(jobj.get("Timestamp").toString()); 
System.out.println(jobj.get("labels").toString()); 
System.out.println(jobj.get("ranges").toString()); 
System.out.println(jobj.get("series").toString()); 

OUTPUT（縮小）

{"min":1468589400,"max":1468612800} 
[1468591200,1468594800,1468598400,1468602000,1468605600,1468609200,1468612800] 
{"close":{"min":116.6050,"max":118.1800},"high":{"min":116.6562,"max":118.2800},"low":{"min":116.5800,"max":118.1600},"open":{"min":116.6000,"max":118.1786},"volume":{"min":100,"max":1390500}} 
[{"Timestamp":1468589424,"close":117.8742,"high":117.9000,"low":117.8050,"open":117.8300,"volume":1390500},{"Timestamp":1468589460,"close":117.8350,"high":117.9900,"low":117.8200,"open":117.8850,"volume":112100},{"Timestamp":1468589578,"close":117.7300,"high":117.8200,"low":117.7000,"open":117.8200,"volume":70600},{"Timestamp":1468589580,"close":117.9770,"high":117.9900,"low":117.7100,"open":117.7600,"volume":91000},{"Timestamp":1468589698,"close":118.0650,"high":118.1000,"low":117.9700,"open":117.9700,"volume":353000},{"Timestamp":1468589701,"close":118.0250,"high":118.0900,"low":117.9210,"open":118.0735,"volume":108400},{"Timestamp":1468589819,"close":118.0900,"high":118.0900,"low":117.9500,"open":118.0201,"volume":121400},{"Timestamp":1468589879,"close":118.1800,"high":118.2300,"low":118.0900,"open":118.0900,"volume":186000},{"Timestamp":1468589939,"close":118.1700,"high":118.1900,"low":118.0700,"open":118.1764,"volume":84400},{"Timestamp":1468589940,"close":118.1800,"high":118.2800,"low":118.1600,"open":118.1786,"volume":152900},{"Timestamp":1468590000,"close":118.1300,"high":118.2100,"low":118.1100,"open":118.1600,"volume":53800},{"Timestamp":1468590060,"close":118.1800,"high":118.1800,"low":118.0950,"open":118.1200,"volume":91800},{"Timestamp":1468590120,"close":118.1110,"high":118.2200,"low":118.0707,"open":118.1700,"volume":65700},{"Timestamp":1468590239,"close":118.1300,"high":118.1400,"low":118.0179,"open":118.1400,"volume":57800},{"Timestamp":1468590240,"close":118.0500,"high":118.1800,"low":118.0500,"open":118.1100,"volume":75000},{"Timestamp":1468590300,"close":118.1000,"high":118.1500,"low":118.0250,"open":118.0449,"volume":51600},{"Timestamp":1468590360,"close":117.9600,"high":118.1100,"low":117.9000,"open":118.1000,"volume":99200},{"Timestamp":1468590421,"close":117.8400,"high":117.9700,"low":117.8200,"open":117.9600,"volume":173800},{"Timestamp":1468590480,"close":117.8800,"high":117.8800,"low":117.8200,"open":117.8300,"volume":92700},{"Timestamp":1468590541,"close":117.7000,"high":117.8850,"low":117.6810,"open":117.8850,"volume":114600},{"Timestamp":1468590659,"close":117.6865,"high":117.7200,"low":117.6600,"open":117.6800,"volume":83200},{"Timestamp":1468590719,"close":117.6300,"high":117.6900,"low":117.4900,"open":117.6800,"volume":121500}, (more results!!!) 

COMPLETE CODE：

public static void main(String[] args) throws Exception { 
    URL url = new URL("http://chartapi.finance.yahoo.com/instrument/1.0/FB/chartdata;type=quote;range=1d/json"); 
    HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection(); 
    InputStream inputStream = new BufferedInputStream(urlConnection.getInputStream()); 
    StringBuffer buffer = new StringBuffer(); 
    if (inputStream == null) 
     return; 

    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); 
    String line; 

    while ((line = reader.readLine()) != null) { 
     buffer.append(line + "\n"); 
    } 

    String jsonString = buffer.substring(30, buffer.length() - 2); 
    JsonObject jobj = new Gson().fromJson(jsonString, JsonObject.class); 
    System.out.println(jobj.get("Timestamp").toString()); 
    System.out.println(jobj.get("labels").toString()); 
    System.out.println(jobj.get("ranges").toString()); 
    System.out.println(jobj.get("series").toString()); 

}