Retrofit 2.0 how to get deserialised error response.body

Question

I\'m using Retrofit 2.0.0-beta1.

In tests i have an alternate scenario and expect error HTTP 400

I would like to have retrofit.Respons

Answer 1

If you use Kotlin another solution could be just create extension function for Response class:

inline fun Response<*>.parseErrJsonResponse(): T?
{
    val moshi = MyCustomMoshiBuilder().build()
    val parser = moshi.adapter(T::class.java)
    val response = errorBody()?.string()
    if(response != null)
        try {
            return parser.fromJson(response)
        } catch(e: JsonDataException) {
            e.printStackTrace()
        }
    return null
}

Usage

val myError = response.parseErrJsonResponse()
if(myError != null) {
   // handle your error logic here
   // ...
}