Retrofit请求头

public interface ObservedApis { @GET Observable get(@Url String url);

@FormUrlEncoded @POST Observable<ResponseBody> post(@Url String url, @FieldMap Map<String, String> map); @DELETE Observable<ResponseBody> delete(@Url String url); @PUT @FormUrlEncoded Observable<ResponseBody> put(@Url String url, @FieldMap Map<String, String> parmas); @POST @Multipart Observable<ResponseBody> postImage(@Url String url, @Part MultipartBody.Part parts);

}