My api expects an empty json body ( { }<\/code> ) when making post requests.
How do I set this up in Retrofit and Jackson?
@POST(my/url)
Call<MyResponse> createPostRequest(@Body Object empty);
try this . It worked for me now.
@POST(my/url)
Call<MyResponse> createPostRequest(@Body Hashmap );
while using this method pass new HasMap
as paremater
apiservice.createPostRequest(new HashMap())
An empty Object does it for Kotlin :
interface ApiService {
@POST("your.url")
fun createPostRequest(@Body body: Any = Object()): Call<YourResponseType>
}
Empty class will do the trick:
class EmptyRequest {
public static final EmptyRequest INSTANCE = new EmptyRequest();
}
interface My Service {
@POST("my/url")
Call<MyResponse> createPostRequest(@Body EmptyRequest request);
}
myService.createPostRequest(EmptyRequest.INSTANCE);
Old question, but I found a more suitable solution by using a okhttp3.Interceptor
that adds an empty body if no body is present. This solution does not require you to add an extra parameter for an empty @Body
.
Example:
Interceptor interceptor = chain -> {
Request oldRequest = chain.request();
Request.Builder newRequest = chain.request().newBuilder();
if ("POST".equals(oldRequest.method()) && (oldRequest.body() == null || oldRequest.body().contentLength() <= 0)) {
newRequest.post(RequestBody.create(MediaType.parse("application/json"), "{}"));
}
return chain.proceed(newRequest.build());
};
You can then create an instance of your service like so:
OkHttpClient.Builder client = new OkHttpClient.Builder();
client.addInterceptor(interceptor);
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("YourURL")
.client(client.build())
.build();
MyService service = retrofit.create(MyService.class);
use:
@POST("something")
Call<MyResponse> createPostRequest(@Body Object o);
then call:
createPostRequest(new Object())
Heres the answer in Kotlin:
@POST("CountriesList")
fun getCountriesNew(@Body body: HashMap<String, String>) : Call<CountryModel>
val call = RetrofitClient.apiInterface.getCountriesNew(HashMap())
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