Special Symbol or Single Quote or apostrophe in JSON String in flutter

android dart flutter

2,783

As @Richard Heap answer

  http.Response response = await http.get('SOME URL',headers: {'Content- Type':'application/json'});
    List<dynamic> responseJson = json.decode(utf8.decode(response.bodyBytes));

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Author by

Farhana Naaz Ansari

Farhana... The only way of writing fewer bugs is writing less code.

Updated on December 10, 2022

Comments

Farhana Naaz Ansari over 1 year
JSON response String containing an apostrophe

This is the key and value coming from the server.
```
"name": "men’s basketball wear with free product",
```
When I'm converting this JSON into pojo response Future<Product> returning me this when I print the string in the log.

PRODUCT NAME menâs basketball wear with free product

I have tried this solution but nothing is happening
```
replaceAll("'", "\'").replaceAll('"', "\'") 
replaceAll('"', '\\"')
```
I have tried in response class
```
Product.fromJsonMap(Map<String, dynamic> map):
        pid = map["pid"],
        aid = map["aid"],
        name = map["name"].replaceAll("'", "\'");
```
My HTTP request
```
http.Response res = await http.get(url);
```
- Günter Zöchbauer over 5 years
  
  I guess you get this JSON from an HTTP request and it's an encoding issue. Check the content-type header of the response.
- Farhana Naaz Ansari over 5 years
  
  @GünterZöchbauer this is coming from get service ` http.Response res = await http.get(url);` should I need to change at server side?
- Günter Zöchbauer over 5 years
  
  Try with "application/json; charset=utf-8" and check what the content-type header of the response is
- Farhana Naaz Ansari over 5 years
  
  @GünterZöchbauer still returning the same thing.
- Günter Zöchbauer over 5 years
  
  You could first check the response headers as mentioned before
- Farhana Naaz Ansari over 5 years
  
  @GünterZöchbauer Thanks I was not able to check and change response header, I will have to manage what I have and found the solution by Richard Heap answer.
- Richard Heap over 5 years
  
  As you figured out, setting a content-type on the request isn't going to make any difference. As is typical with a GET you aren't actually sending any content to the server. You want the server to send its content back to you in UTF-8; in fact it already is - so there's nothing more you can do in the request to influence the response. The problem is that the server is forgetting to include the charset suffix with its content-type. Dart has a slightly unusual (for this day and age) default of LATIN-1 if the suffix is omitted. Glad you fixed it.
tudorprodan over 3 years

This solution worked for me, thanks. Btw, no need for Content-Type header, just for consistency maybe you want Accept header with application/json;charset=utf-8 value.