Flutter web api calling XMLHttpRequest error

Question

     Future<void> _getShopListAllJson() async {
try {
  final response = await http.get("http://abair.gq/db_dept_info_all.php");
  if (response.statusCode == 200) {
    print(response.statusCode);
    print(response.body);
     setState(() {
      _data = jsonDecode(response.body) as List;
    });
  } else {
    print("Some error: ${response.statusCode}");
  }
} catch (e) {
  print(e);
}

}

Please see above code flutter web api calling error xmlhttprequest

Error

Code

Jackson Lee · Accepted Answer · 2020-06-25 10:31:28Z

17

Looks like CORS is blocking it, try adding a CORS proxy in front of your URL.

Add this in front of your URL https://cors-anywhere.herokuapp.com/

final response = await http.get("https://cors-anywhere.herokuapp.com/http://abair.gq/db_dept_info_all.php");

Once you can confirm it is working it is best practice to have your own proxy so create one using this method:

https://github.com/Rob--W/cors-anywhere/#documentation

answered Jun 25, 2020 at 10:31

Jackson Lee

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3 Comments

Charles Down Over a year ago

Thx for your answe, it works on my project when i emulate it on crome but when i emulate it on an pixel phone it still gives no answer, i have to add that before the change only on crome the error was shown and on the pixel nothing hapend

Atul Chaudhary Over a year ago

is there is best practice to remove this error, without using this URL in front of your API endpoint ????

Jackson Lee Over a year ago

It really depends what your requesting - if you manage the server with the data, you can allow your origin, if your using a service - sometimes they will have a section where you can allow an IP/URL that you can accept request from

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