DioError [DioErrorType.DEFAULT]: FormatException: Unexpected character (at character 1)

[fyzs-n9001]

DioError [DioErrorType.DEFAULT]: FormatException: Unexpected character (at character 1)

[fyzs-n9001]

请求是成功的, 服务端返回的是一个Base64编码的字符串

[wendux]

请贴出错误栈及触发的源码

[fyzs-n9001]

随便弄个get接口,然后返回一个base64的字符串不就行了吗,你这个库里默认做了json格式校验吧

[wendux]

只有当返回头content-type指明为json时默认才会自动转换，如果你不想以让自动转换，可以指定接收的responseType， 文档里都有。

[akindone]

when api is 500, response is <h1>Server Error (500)</h1> I use postman and find content-type is text/html . But I debug transformResponse find response's content-type is json ! (using default responseType) @wendux

[castrojr913]

@wendux I have a similar issue when field name has a camel case format. For instance:

FormData.from({ "verifyCode": jsonEncode({ "phone": phoneNumber, "zipcode": zipCode, "device_id": deviceId, "os_id": osId, } })

It throws FormatException: Unexpected character. However, if I replace verifyCode by verifycode, It works. It's really weird.

[gideonpeters]

I had this issue and turns out I was already decoding json in my base options and tried decoding it again in my logic to handle the response data. Like this:

already decoding it by specifying the responseType as ResponseType.json

BaseOptions options = new BaseOptions(
    contentType: ContentType.json.toString(),
    responseType: ResponseType.json,
    followRedirects: false,
    validateStatus: (status) {
      return status < 500;
    },
  );

and I was still trying to decode it here
return jsonDecode(response.data);

instead of just
return response.data;

[riskiadi]

better use http :p

[Godfather6666]

随便弄个弄个接口，然后返回一个base64的字符串不就行了，你这个库里默认了json格式的吧

我现在遇到这个问题了，可以请问你是怎么解决的吗

[nawzhin95]

any solution ?