What the equivalent code in flutter dio compare to android retrofit #body? - flutter

Question

Now I try to transform my Andorid project to flutter. but I stucked on an api call.
here is my android code in Kotlin:
/**
* sendSms
*
* #return
*/
#Headers("Content-Type: application/json;charset=UTF-8")
#POST("uaa/sms/send/code")
fun sendSms(#Body params: Map<String, String?>): Observable<ApiResult<String>>
Now I want to implement this api call in flutter use dio, but I still got wrong, my flutter code
is :
class Req {
static Req _instance;
static const int connectTimeOut = 5 * 1000;
static const int receiveTimeOut = 7 * 1000;
static Req getInstance() {
if (_instance == null) {
_instance = Req._internal();
}
return _instance;
}
Dio _client;
Req._internal() {
if (_client == null) {
BaseOptions options = new BaseOptions();
options.connectTimeout = connectTimeOut;
options.receiveTimeout = receiveTimeOut;
_client = new Dio(BaseOptions(
baseUrl: 'https://gw.ec.iunicorn.com/',
));
// 添加缓存插件
_client.interceptors.add(Global.netCache);
//添加token
_client.interceptors.add(Global.tokenInterceptor);
_client.interceptors.add(Global.logInterceptor);
// dio.options.headers[HttpHeaders.authorizationHeader] = Global.profile.token;
_client.options.headers['source'] = 'ANDROID';
if (!Global.isRelease) {
(_client.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
(client) {
// client.findProxy = (uri) {
// return "PROXY 10.1.10.250:8888";
// };
client.badCertificateCallback =
(X509Certificate cert, String host, int port) => true;
};
}
}
}
//post请求
void post(
String url,
OnData callBack, {
Map<String, String> params,
Options options,
FormData formData,
OnError errorCallBack,
CancelToken token,
}) async {
this._request(
url,
callBack,
method: RequestType.POST,
options: options,
formData: formData,
params: params,
errorCallBack: errorCallBack,
token: token,
);
}
void _request(
String url,
OnData callBack, {
RequestType method,
Map<String, String> params,
Options options,
FormData formData,
OnError errorCallBack,
ProgressCallback progressCallBack,
CancelToken token,
}) async {
final id = _id++;
int statusCode;
try {
Response response;
if (method == RequestType.GET) {
if (mapNoEmpty(params)) {
response = await _client.get(url,
queryParameters: params, cancelToken: token);
} else {
response = await _client.get(url, cancelToken: token);
}
} else {
if (mapNoEmpty(params) || formData != null) {
response = await _client.post(
url,
data: formData ?? params,
onSendProgress: progressCallBack,
cancelToken: token,
);
} else {
response = await _client.post(url, cancelToken: token);
}
}
statusCode = response.statusCode;
if (response != null) {
if (response.data is List) {
Map data = response.data[0];
callBack(data);
} else {
Map data = response.data;
callBack(data);
}
print('HTTP_REQUEST_URL::[$id]::$url');
print('HTTP_REQUEST_BODY::[$id]::${params ?? ' no'}');
print('HTTP_RESPONSE_BODY::[$id]::${response.data}');
}
if (statusCode < 0) {
_handError(errorCallBack, statusCode);
return;
}
} catch (e) {
_handError(errorCallBack, statusCode);
}
}
///处理异常
static void _handError(OnError errorCallback, int statusCode) {
String errorMsg = 'Network request error';
if (errorCallback != null) {
errorCallback(errorMsg, statusCode);
}
print("HTTP_RESPONSE_ERROR::$errorMsg code:$statusCode");
}
}
void sendSms(BuildContext context, Callback callback) async {
Req.getInstance().post(
ApiPath.SEND_SMS,
(t) {
SmsResponse r = SmsResponse.fromJson(t);
print(r);
if (callback != null) {
callback();
}
},
formData: FormData.fromMap({
'phoneNumber':'182********'
}),
options: RequestOptions(
headers: {
HttpHeaders.contentTypeHeader: 'application/json;charset=UTF-8',
}),
errorCallBack: (msg, code) {
Fluttertoast.showToast(
msg: AppLocalizations.of(context).send_sms_fail,
toastLength: Toast.LENGTH_SHORT,
gravity: ToastGravity.CENTER,
backgroundColor: Colors.orangeAccent,
timeInSecForIosWeb: 1);
});
}
Now I want to know is the data in dio is equivalent to the #Body in java retrofit, if not, how can I do?

Answer 1

Doing this in plain Dio leads to a lot of boilerplate. There is also an equivalent retrofit package for Flutter inspired by the same package for Android. https://pub.dev/packages?q=retrofit
From there it's almost the same, you just add () after #Body. Here is an example
#POST('/auth/change-password')
Future<bool> changePassword({
#required #Body() Map<String, dynamic> params,
#required #Header('auth-token') String token,
});