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Problem receiving from URL

开发者 https://www.devze.com 2023-02-16 18:29 出处:网络
Hello I am receiving a JSON file from an URL in an Android device. I have no idea why I am getting just the first character of the JSON, this is a \"{\"instead of

Hello I am receiving a JSON file from an URL in an Android device. I have no idea why I am getting just the first character of the JSON, this is a "{" instead of {"status":"OK","num_results":5,"results":[{"id":1,"title":"Apartamentos Campus", Then is.available() is returning 1 all the time. The funny thing is that if I use in another device it receives everything.

I am using the wifi to connect.

And the output that I am getting is:

03-11 13:12:17.377: VERBOSE/Mixare(15816): attemps: 1

03-11 13:12:17.382: VERBOSE/Mixare(15816): is.available(): 1

03-11 13:12:17.462: VERBOSE/Mixare(15816): attemps: 1

03-11 13:12:17.482: VERBOSE/Mixare(15816): is.available(): 1

03-11 13:12:19.417: VERBOSE/Mixare(15816): attemps: 2

03-11 13:12:19.417: VERBOSE/Mixare(15816): is.available(): 1 ...

And this is the code:

    public InputStream getHttpGETInputStream(String urlStr, int attemps) throws Exception {     
    URL u = new URL(urlStr);
    InputStream is = null;
    try{            
        URLConnection uc = u.openConnection();          
        is =  uc.getInputStream();          
    }
    catch(Exception e){
        Log.v(MixView.TAG, "Excepcion leyendo inputStream: "+e.getMessage());           
    }
    Log.v(MixView.TAG, "attemps: "+attemps);
    Log.v开发者_运维技巧(MixView.TAG, "is.available(): "+is.available());
    if(is.available() < 50 && attemps < 6){
        try {               
            Thread.sleep(2000);//para y lo vuelve a intentar descargar              
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }           
        attemps++;      
        is.close();
        return getHttpGETInputStream(urlStr,attemps);
    }       
    return is;
}


I guess, You are reading the content in wrong way. Please use following code:

public static final byte[] getBytes(URLConnection conn ) throws IOException {
                final InputStream inputStream = conn.getInputStream();      
                final ByteArrayOutputStream baos = new ByteArrayOutputStream();         
                final byte[] b = new byte[256];
                int rv = 0;
                while ( ( rv = inputStream.read(b) ) != -1 ) baos.write(b, 0, rv);
                try  { inputStream.close(); } catch ( Exception e ) {};
            try  {
                final HttpURLConnection httpConn = (HttpURLConnection)conn;                     
                        httpConn.disconnect();
            }
            catch ( Exception e ) {};       
            final byte[] bytes =  baos.toByteArray();
            baos.close();
            return bytes;
        }

        public static final String getResponse(URLConnection conn) throws IOException {
                final byte[] bytes = getBytes(conn);
            final String response = new String(bytes,"UTF-8");
            return response;
        }      

...
final JSONObject responseObj = new JSONObject(getResponse(your_url_connection));
...
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