GSON issue with String

Question

    String s = "m\\"+"/m\\/m/m/m/m/m";

    LinkedHashMap<String, String> hm = new LinkedHashMap<>();

    hm.put("test", s);

    System.out.println(hm+"  Hash map = "+hm.toString());

Fine Output is {test=m\/m\/m/m/m/m/m} Hash map = {test=m\/m\/m/m/m/m/m}

    String s2 = new Gson().toJson(hm.toString());

    System.out.println("Json result is "+s2);

Not Fine Output is Json result is "{test\u003dm\\/m\\/m/m/m/m/m}"

Is GSON going mad or is it something that I am doing wrong? What is happening to with Back Slashes and from where does this u003d appears? I knew that there exists a bug of this nature a long time ago but it was resolved. How can I resolve this issue? Thanks in advance.

its encoding again: `=` to `\u003dm` and `\ to `\\\` – codeMan May 15 '13 at 07:02 — codeMan, May 15 '13 at 07:02
How can I solve the later issue. Any suggestions? – Fahad Ishaque May 15 '13 at 07:26 — Fahad Ishaque, May 15 '13 at 07:26

score 129 · Accepted Answer · edited Oct 18 '16 at 10:17

129

The = sign is encoded to \u003d. Hence you need to use disableHtmlEscaping().

You can use

Gson gson = new GsonBuilder().disableHtmlEscaping().create();
String s2 = gson.toJson(hm.toString());

For \/ turning into \\/ issue, the solution is

s2.replace("\\\\", "\\");

edited Oct 18 '16 at 10:17

Pang

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answered May 15 '13 at 07:02

AllTooSir

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what about \n ?? Because \n also added sometimes in string. – Bajrang Hudda Feb 01 '18 at 11:20
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@Bajarang Use like this String base64EncodedData = Base64.encodeToString(data, Base64.NO_WRAP); – Pinkesh Darji Apr 16 '18 at 12:25
Thanks. This helps me. – donmj Jul 30 '20 at 19:32

Nicholas P. · Answer 2 · 2018-05-17T15:53:16.493

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Since some people like to nitpick, I'll add the answer to the question (even though it was already answered and chosen as the correct answer) ...

I agree with the chose answer to this question, use the following code:

Gson gson = new GsonBuilder().disableHtmlEscaping().create();
String s2 = gson.toJson(hm.toString());
s2.replace("\\\\", "\\");

@Bajrang Hudda has asked about \n ... I hit this issue recently ... I was able to solve it using:

Gson gson = new Gson();
String json = (gson.toJson(data)).replaceAll("\\\\n", "\\n");

edited May 17 '18 at 15:53

answered May 16 '18 at 15:03

Nicholas P.

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But this is not an answer to the original question, as far as I can see. – anothernode May 16 '18 at 15:22
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@anothernode I couldn't add a response to that guy under the question when lower than 50 rep points... So I added another response here, sue me. – Nicholas P. May 17 '18 at 15:50
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Look, I was just giving you a friendly hint. No need to be offended. And copying and pasting someone else's answer into your non-answer doesn't make the situation much better. – anothernode May 17 '18 at 16:14

GSON issue with String

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