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POjava - json extract/decode issue - json within json?
 

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  1. POjava - json extract/decode issue - json within json?
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    <p>very simple java/json question.</p> <p>I have the following test chunk of code. I can get the 1st element using the ".get()" by either index, or by the key. but I can't get any other elements by key...</p> <p>The test dies, with nothing on the cmdline.. I'm assuming this is due to something not being correctly set within my env to display err results..</p> <p>UPDATE:: OK.. it appears that the real issue is I don't know how to get an item, and to 1st determine what "type" it should be cast to. for the "nickname","name".. if I cast them as String.. I get the correct result.. </p> <p>So, how can one iterate through the key/value list of the json to determime how to correctly get each item??</p> <p>The test code is:</p> <pre><code>import org.json.simple.JSONObject; import org.json.simple.*; //import org.json.simple.JSONValue; public class asuH { public static void main(String[] args){ final String[] arguments = args; java.awt.EventQueue.invokeLater(new Runnable() { public void run() { try{ String json_=arguments[0]; //--get the page for the 1st and 2nd urls... //test the json input.. System.out.println("asdfsfd \n"); System.out.println(json_); //JSONObject obj=new JSONObject(); //Object obj=JSONValue.parse(json_); String k9="{\"nickname\":null,\"num\":100,\"contact\":{\"phone\":\"123456\",\"zip\":\"7890\"},\"balance\":1000.21,\"is_vip\":true,\"name\":\"foo\"}"; //JSONObject obj = (JSONObject)JSONValue.parse(json_); JSONObject obj = (JSONObject)JSONValue.parse(k9); System.out.print("11 \n"); String fa = (String)obj.get("nickname"); System.out.print(fa); System.out.print("22 \n"); fa = (String)obj.get("contact"); //&lt;&lt; not working!!! System.out.println("22 cc\n"); System.out.println(fa); String ttt=obj.toString(); System.out.print(ttt); System.out.println("\n s4354455 \n"); System.exit(0); } catch (Exception ex) {} System.exit(0); } }); } } </code></pre> <p>any thoughts/pointers are appreciated. </p> <p>thanks</p>
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