Parsing complex Json response in java

Question

How to parse below json response using JSONArray, JSONObject:

Sample JSON Data:

{
  "ABC": [
    {
      "BCD": {
        "CDE": "HIJ"
      }
    }
  ]
}

I tried below solution.

JSONArray ja = new JSONArray(jsonObj.get("ABC").toString());

for(int j=0; j<ja.length(); J++)
{
  JSONObject jarr = (JSONObject)ja.get(j);
  System.out.print(jarr.getString("BCD"));
}

How to parse an object inside an object of an array ? How to get CDE ?

Also share what have you tried ?

Sayan Bhattacharya
– Sayan Bhattacharya

2022-07-15 07:36:40 +00:00
Commented Jul 15, 2022 at 7:36 — Sayan Bhattacharya
– Sayan Bhattacharya, Commented Jul 15, 2022 at 7:36
Does this answer your question? How to parse JSON in Java

pringi
– pringi

2022-07-15 07:57:53 +00:00
Commented Jul 15, 2022 at 7:57 — pringi
– pringi, Commented Jul 15, 2022 at 7:57

Bhanu · Accepted Answer · 2022-07-15 08:39:05Z

0

The below should work:

import org.json.JSONArray;
import org.json.JSONObject;

public class Test {
    
    public static String getCDE(String json) {      
        JSONObject obj = new JSONObject(json);
        JSONArray abc = (JSONArray) obj.get("ABC");
        JSONObject bcd = ((JSONObject) abc.get(0)).getJSONObject("BCD");
        String cde = (String) bcd.get("CDE");
        return cde;
    }
    
    public static void main(String[] args) {
        String json = "{\r\n" + 
                "  \"ABC\": [\r\n" + 
                "    {\r\n" + 
                "      \"BCD\": {\r\n" + 
                "        \"CDE\": \"HIJ\"\r\n" + 
                "      }\r\n" + 
                "    }\r\n" + 
                "  ]\r\n" + 
                "}";
        
        System.out.println(getCDE(json));       
    }
}

answered Jul 15, 2022 at 8:39

Bhanu

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Comments

Raymond Choi · Accepted Answer · 2022-07-23 17:35:16Z

https://github.com/octomix/josson https://mvnrepository.com/artifact/com.octomix.josson/josson

implementation 'com.octomix.josson:josson:1.3.20'

-------------------------------------------------

Josson josson = Josson.fromJsonString("{\n" +
        "  \"ABC\": [\n" +
        "    {\n" +
        "      \"BCD\": {\n" +
        "        \"CDE\": \"HIJ\"\n" +
        "      }\n" +
        "    },\n" +
        "    {\n" +
        "      \"BCD\": {\n" +
        "      }\n" +
        "    },\n" +
        "    {\n" +
        "      \"BCD\": {\n" +
        "        \"CDE\": \"KLM\"\n" +
        "      }\n" +
        "    }\n" +
        "  ]\n" +
        "}");
System.out.println(josson.getNode("ABC.BCD.CDE")); // -> ["HIJ","KLM"]
System.out.println(josson.getNode("ABC[0].BCD.CDE")); // -> "HIJ"
System.out.println(josson.getNode("ABC[1].BCD.CDE")); // -> null
System.out.println(josson.getNode("ABC[2].BCD.CDE")); // -> "KLM"
System.out.println(josson.getNode("ABC.BCD.CDE[1]")); // -> "KLM"

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