End of input at line 1 column 1 path $

End of input at line 1 column 1 path $

retrofit에서 response값이 비어있을 때(Length=0) 발생

다음의 코드를 추가한다

Java코드 해결책

https://medium.com/@kenkyee/retrofit2-doesnt-handle-empty-content-responses-bef2b33ee8ea

Kotlin코드

http://kotlinandroidtutorials.com/retrofit-best-practices/

/**
 * 비어있는(length=0)인 Response를 받았을 경우 처리
 */
class NullOnEmptyConverterFactory : Converter.Factory() {
    override fun responseBodyConverter(type: Type?, annotations: Array<Annotation>?, retrofit: Retrofit?): Converter<ResponseBody, *>? {
        val delegate = retrofit!!.nextResponseBodyConverter<Any>(this, type!!, annotations!!)
        return Converter<ResponseBody, Any> {
            if (it.contentLength() == 0L) return@Converter EmptyResponse()
            delegate.convert(it)
        }
    }

}

EmptyResponse는 클래스 하나 만들어주면 된다

val retrofit = Retrofit.Builder()
    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
    .addConverterFactory(NullOnEmptyConverterFactory())
    .addConverterFactory(GsonConverterFactory.create())
    .baseUrl(BASE_PATH)
    .build()