CODEWITHSUNDEEP
javajson
DroidOS
DroidOS

Reputation: 8920

Java JSONArray throws unexpected exception

I need to convert JSON generated in JavaScript to a JSONArray in Java - the context here is a Cordova plugin for a hybrid Android app. The following string

 "[\"9784142605765949528\",2869,264,7]"

causes Java to complain. It comes back with the message

["9784142605765949528",2869,264,7] of type java.lang.String cannot be converted to JSONArray

I fail to see why this might be happening. The first array element above is a string though it looks like a number. This is because I am using a custom 64 bit integer implementation in JS which returns its value as a string.

The part of my Java code that is parsing this JSON is as follows

try
   {
    Feedback.postBackInfo("LWPD4 " + lwpd[4]); 
    JSONArray hXYZ = new JSONArray(lwpd[4]);

Feedback is an internal utility I use to aid with debugging. The JSON I show below comes from that call to Feedback and it is the subsequent new JSONArray() that is throwing this error

I fail to see what is wrong here - the string is valid JSON.

Upvotes: 0

Views: 515

Answers (1)

bhspencer
bhspencer

Reputation: 13600

I believe you might be confused about the input String you are trying to parse. The following codes works just fine.

import org.json.JSONArray;

public class JsonTest {

    public static void main(String[] args) throws Exception {
        String json = "[\"9784142605765949528\",2869,264,7]";
        JSONArray result = new JSONArray(json);
        System.out.println(result);
    }
}

Since the above works I suspect that you are not trying to parse the String you think you are trying to parse. What is the actual value of your lwpd[4] variable?

Upvotes: 1

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