Java Development

[nikunj_patel143]

Hi

I am very new in JSON parsing......

How can i parseJSON like below.....please help

[{"id":48640,"end_date":"2011-11-01T00:00:00.000-0400","title":"FREE ACCESS TO OVER 10,000 NFB FILMS","image_url":"http://media.lavitrine.com/image/1288643351752.jpg","description":"FROM TUESDAY TO SUNDAY<br />NOON TO 9 PM<br /><br />Free access to over 10,000 NFB films<br /><br />Equipped with 21 single and double viewing stations, the CineRobotheque gives the public a chance to discover more than 10,000 NFB titles free-of-charge. To browse from one NFB film to another, simply slide your finger across the touch screen.<br /><br />FREE","sef_url":"http://www.lavitrine.com/activity/Free_access_to_over_10_000_NFB_films","last_minute":0,"start_date":"2010-11-01T00:00:00.000-0400","last_modification":"2010-11-02T15:35:26.000-0400"},{"id":37656,"end_date":"2012-03-01T00:00:00.000-0500","title":"KINO PASS","image_url":"http://media.lavitrine.com/image/1274378668928.jpg","description":"Kino’00 lance la Passe Kino ! Valeur 90 $ - Prix La Vitrine 50 $<br /><br />Les projections mensuelles de Kino proposent aux spectateurs, chaque 1er vendredi du mois, une variété de courts-métrages produits sans ou avec très peu de moyens. Comédie, drame, fantastique, documentaire, film d’art ou OFNI (objet filmé non identifiable), tous les genres sont au rendez-vous!<br /><br />PROCHAINE SOIRÉE : 3 SEPTEMBRE 2010 À 20 h 30 <br /><br />La Passe Kino  permet d’assister  à toutes ces projections mensuelles et voir des courts-métrages inédits. En bonus, le DVD Planète Kino avec le meilleur de Kino de l’année est offert !<br /><br />Les projections mensuelles se déroulent dans une chaleureuse ambiance de cabaret, les réalisateurs-vedettes viennent à tour de rôle présenter leur film en personne. Le public est ensuite invité à aller à leur rencontre durant l’entracte et à la fin de la soirée.<br /><br />La projection mensuelle est un lieu de motivation, un catalyseur pour les artistes. Afin de stimuler l’effet d’entraînement, l’animateur de la soirée invite les réalisateurs à annoncer publiquement la date de présentation de leur prochain film.<br /><br />Au sujet de Kino…<br />Kino est un mouvement créé à Montréal en 1999 dans le but d’encourager la production et la diffusion d’œuvres cinématographiques indépendantes et originales. Aujourd’hui, on retrouve plus de 60 cellules Kino dans 14 pays sur 4 continents.","sef_url":"http://www.lavitrine.com/activity/KinoPass","last_minute":0,"start_date":"2011-03-01T00:00:00.000-0500","last_modification":"2010-08-12T09:51:32.000-0400"}]

[YamilBracho]

Something like :

[YamilBracho · Accepted solution]

JSONArray arr = new JSONArray(jsonString);
for (int i=0, len = arr.length; i < len; i++) {
   JSONObject obj = arr.getJSONObject(i);
   System.out.println("id=" + obj.getString("id");
   System.out.println("end_date=" + obj.getString("end_date");
   System.out.println("title=" + obj.getString("title");
   System.out.println("image_url=" + obj.getString("image_url");
   System.out.println("description=" + obj.getString("description");
   System.out.println("sef_url=" + obj.getString("sef_url");
   System.out.println("last_minute=" + obj.getString("last_minute");
   System.out.println("start_date=" + obj.getString("start_date");
   System.out.println("last_modification=" + obj.getString("last_modification");
 }  

Something like :

[nikunj_patel143]

Thank you man.......................

its working awesome.........................

[TessyJose]

hi ,

i tried your example and many others available all over google , but just not able to parse the json response

this is what i receive from my servlet and is stored in a string variable :

{"MyBean":{"username":"john","jsonReadyString":"hello john !!"}}

no matter what code i try , it goes to the catch block and thr is "no stacktrace" available . i want to parse this and put it into a pojo.  pls help i am at my wits end

[YamilBracho]

try :

String jsonString = "{\"MyBean\":{"\username\":\"john\",\"jsonReadyString\":\"hello john !!\"}}";
JSONObject myBean = new JSONObject(jsonString);
String username = myBean.getString("username");
String jsonReadyString = myBean.getString("jsonReadyString");

[TessyJose]

no luck still goes to the catch block ... no stack trace . any idea why this is happening ?

[TessyJose]

i managed to figure out a dirty fix

try

{

JSONObject myBean =newJSONObject(content);

String alias = myBean.getString("MyBean");

System.out.println("alias.........................."+alias);  

  //output-    alias......................{"username":"john","jsonReadyString":"john hello !!"}

JSONObject myBean2=newJSONObject(alias);

String username=myBean2.getString("username");

System.out.println("username.........................."+username);

//output-         username..........................john

String jsonReadyString=myBean2.getString("jsonReadyString");

System.out.println("jsonReadyString.........................."+jsonReadyString);

//output-         jsonreadystring..........................john hello !!

}

catch(JSONException e) {

e.printStackTrace();

}

But this code would it thr were more rows of username and jasonreadystring. Any advice on iterating thru arrays in this situation?

[peter_strange]

Sorry not looked at you JSON processing,, but the reason you are not getting a stack trace is that you are not catching Throwable.  To get a stack tracde you have to have code like this:

try {

} catch (Throwable t) {

t.printStacktrace();

...

}

in this case, since it appears your exception was a JSONExceptin anyway, I would have thought printing the exception (e.toSting()) would have told you what the problem is,

Your 'work around' of using a JSONObject to process the contents of another Object seems to me to be exactly what is required here.  If you look at the various parsing options like this, you need to invoke the appropriate 'matching' one to get your data.  This is one of the differences between XML and JSON, it seems you do have to know what you are going to get to parse a JSON response.    Or probably I am just missing something.... 

[christopherbecker]

Hi, your code works, it gets the amount of json fields and all that, but when I try to display the content as how you are doing it, I get this error.

Do you perhaps know why?