I need to remove a particular tag from JSON object

Question

I have a JSON object as follows

{
    "mandator":"GB0010001",
    "debitAccount":"81884",
    "creditAccount":"82918",
    "trustedBeneficiary":"false",
    "localCurrencyAmount":35,
    "transactionReference":"omega7.1.1",
    "debitAccountASPSP":"t24",
    "currencyAmount":35,
    "executionDate":"20180102",
    "creditAccountASPSP":"t24",
    "transactionType":"Contactless payment",
    "trustedPSP":"false",
    "jsonErrorResponse":{
        "errorCount":0,
        "errors":[

        ]
    },
    "currency":"USD",
    "company":"GB0010001"
}

I need to remove "jsonErrorResponse":{"errorCount":0,"errors":[]}, I used JSONobject.remove("jsonErrorResponse").toString()

But it gave me output as {"errorCount":0,"errors":[]} instead of

{
    "mandator":"GB0010001",
    "debitAccount":"81884",
    "creditAccount":"82918",
    "trustedBeneficiary":"false",
    "localCurrencyAmount":35,
    "transactionReference":"omega7.1.1",
    "debitAccountASPSP":"t24",
    "currencyAmount":35,
    "executionDate":"20180102",
    "creditAccountASPSP":"t24",
    "transactionType":"Contactless payment",
    "trustedPSP":"false",
    "currency":"USD",
    "company":"GB0010001"
}

Take a look at the javadoc of the remove method. And then take a look at your JSONObject after you removed the "jsonErrorResponse". — f1sh
– f1sh, Commented Apr 16, 2019 at 9:27

Michael · Accepted Answer · 2019-04-16 09:27:18Z

2

JSONobject.remove("jsonErrorResponse") returns the thing that was removed. You are calling toString on the section you have just "deleted".

Simply do not chain the method calls.

JSONobject.remove("jsonErrorResponse");
String newJson = JSONobject.toString()

answered Apr 16, 2019 at 9:27

Michael

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Raz · Accepted Answer · 2019-04-16 09:28:45Z

0

The remove method most likely returns the object the was removed. You need to do toString on the object the you removed it from

answered Apr 16, 2019 at 9:28

Raz

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user3873278 · Accepted Answer · 2019-04-16 09:28:45Z

Since you are working on JSONobject you are removing the content from that object.

You need to call toString() on the JSONobject.

String str = "{\"mandator\":\"GB0010001\",\"debitAccount\":\"81884\",\"creditAccount\":\"82918\",\"trustedBeneficiary\":\"false\",\"localCurrencyAmount\":35,\"transactionReference\":\"omega7.1.1\",\"debitAccountASPSP\":\"t24\",\"currencyAmount\":35,\"executionDate\":\"20180102\",\"creditAccountASPSP\":\"t24\",\"transactionType\":\"Contactless payment\",\"trustedPSP\":\"false\",\"jsonErrorResponse\":{\"errorCount\":0,\"errors\":[]},\"currency\":\"USD\",\"company\":\"GB0010001\"}"
JSONObject jsonObject = new JSONObject(str);
jsonObject.remove("jsonErrorResponse");
jsonObject.toString();

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