Android - convert json string to JSONObject without removing the escaped characters

Question

I convert json string to JSONObject using JSONObject jsonObject = new JSONObject(jsonString); And the convert jsonObject to Java Object using gson

But it gives an error when a json attribute value contains quotes, like , { "length" : "10"" } (its, 10 inches)

Edit : i get data from server api in following manner :
"{\"data\":\"10\"\"}"
i replace \" by ", and which converts into { "data" : "10"" } this gives exception as it cannot convert jsonobject into java object
org.json.JSONException: Unterminated object at character 13 of {"data":"10""}
How can i convert "{\"data\":\"10\"\"}" to { "data" : "10\"" }

Edit 2 : I was converting the string to JSONObject the wrong way.
By removing slashes, I was also removing the slashes of escaped characters.

Solution : Instead, I used StringEscapeUtils.unescapeJson(jsonString) which didn't remove the slashes of escaped characters inside json key-value data.

You should read JSON specification to know which characters are allowed in JSON. — Vladyslav Matviienko, Feb 07 '18 at 06:59

score 2 · Answer 1 · edited Feb 07 '18 at 06:51

2

Please share your error as well. As far as from your Question i can see there are 2 quotes near 10.

{ "length" : "10"`"` }

If you want to insert " for inches please provide \".

edited Feb 07 '18 at 06:51

Hemant Parmar

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answered Feb 07 '18 at 06:45

Nizamudeen Sherif

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please see the edit in the question – Abhishek Aggarwal Feb 07 '18 at 07:27
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Please share us the error/exception log too. – Nizamudeen Sherif Feb 07 '18 at 07:38
org.json.JSONException: Unterminated object at character 13 of {"data":"10""} – Abhishek Aggarwal Feb 07 '18 at 08:35

score 2 · Accepted Answer · answered Feb 07 '18 at 06:46

2

You have to use \ escape character before ". Here's what you should do:

{ "length" : "10\"" }

If you have to use special character in your JSON string, you can escape it using \ character.

See this list of special character used in JSON :

\b  Backspace (ascii code 08)
\f  Form feed (ascii code 0C)
\n  New line
\r  Carriage return
\t  Tab
\"  Double quote
\\  Backslash character

answered Feb 07 '18 at 06:46

iamgopal

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please see the edit in the question – Abhishek Aggarwal Feb 07 '18 at 07:27
You don't have to put \ in front of every ", but only before 10\" – iamgopal Feb 08 '18 at 03:15
I wasn't putting slashes before every ", that's how the data comes from the server side (serialized). I got the solution, you can see "Edit 2" in the question. – Abhishek Aggarwal Sep 20 '18 at 06:26

Ratilal Chopda · Answer 3 · 2018-02-07T13:25:53.500

0

Try this

jsonString = "{\"data\":\"10\"\"}";

String jsonFormattedString = jsonString.replaceAll("\\\\", "");

Log.i("Response",":"+jsonFormattedString);

OUTPUT

I/Response: :{"data":"10""}

EDIT

jsonString = "{\"data\":\"10\"\"}";

String jsonFormattedString = downloadDetails.replaceAll("\"", "");

Log.i("Response",":"+jsonFormattedString);

JSONObject jsonObject = new JSONObject(jsonFormattedString);
String data = jsonObject.getString("data");
Log.i("Response data",":"+data);

OUTPUT

I/Response: :{data:10}
I/Response data: :10

LAST EDIT

jsonString = "{\"data\":\"10\"\"}";

String jsonFormattedString = downloadDetails.replaceAll("\"", "");

Log.i("Response",":"+jsonFormattedString);


final String regex = "([a-zA-Z0-9-]+):([a-zA-Z0-9-]+)";
final String subst = "\"$1\":\"$2\"";

final Pattern pattern = Pattern.compile(regex);
final Matcher matcher = pattern.matcher(jsonFormattedString);

jsonFormattedString = matcher.replaceAll(subst);

Log.i("Final Response",":"+jsonFormattedString);

JSONObject jsonObject = new JSONObject(jsonFormattedString);
String data = jsonObject.getString("data");
Log.i("Response data",":"+data);

data = data+"\"";

Log.i("FINAL VALUE",":"+data);

LAST OUTPUT

I/Response: :{data:10}
I/Final Response: :{"data":"10"}
I/Response data: :10
I/FINAL VALUE: :10"

edited Feb 07 '18 at 13:25

answered Feb 07 '18 at 08:25

Ratilal Chopda

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this output will give exception `org.json.JSONException: Unterminated object at character 13 of {"data":"10""} ` – Abhishek Aggarwal Feb 07 '18 at 08:36
@AbhishekAggarwal please check my **EDIT ANSWER** with output. – Ratilal Chopda Feb 07 '18 at 08:53
data is not numeric, its a string `10"` , entered in an edittext – Abhishek Aggarwal Feb 07 '18 at 10:52
data isn't `10`, its `10"`, I need data value as `10"` – Abhishek Aggarwal Feb 07 '18 at 12:56
@AbhishekAggarwal please check my last edit answer with output. you can just add this line **data = data+"\"";** you got output. – Ratilal Chopda Feb 07 '18 at 13:27
if you have any query you can feel free to ask me. – Ratilal Chopda Feb 07 '18 at 13:32
appending `"\""` isn't the right approach. This is the data I'm getting from the server, and i won't know what the data could be. I took this json just for an example – Abhishek Aggarwal Feb 08 '18 at 05:47

Android - convert json string to JSONObject without removing the escaped characters

3 Answers3