How to get response body to retrofit exception?

Question

I am trying to connect to rest service via retrofit in android application. I am getting responses. But when there is some error response from the service, conversion exception occurs and now I want to do some actions based on the response body. But I am getting response body as NULL. But retrofit log has a error message. Why is this happening.

D/Reftofit log(24856): OkHttp-Received-Millis: 1397527055676 D/Reftofit log(24856): OkHttp-Response-Source: NETWORK 200 D/Reftofit log(24856): OkHttp-Sent-Millis: 1397527055492 D/Reftofit log(24856): Server: Apache/2.2.22 (Ubuntu) D/Reftofit log(24856): X-Powered-By: PHP/5.3.10-1ubuntu3.10 D/Reftofit log(24856): {"result":"Invalid Token ID"} 

Code:

public void failure(RetrofitError retrofitError) {     String response = null;     TokenError tokenError = (TokenError) retrofitError.getBodyAs(TokenError.class);     response = tokenError.getErrorDetails();     Log.e(TAG, response);     if (response != null && response.contains("Invalid Token ID")) {         GroupDataProvider.getInstance().onFailure();     }  } 

Here I am getting tokenError as null. I don't know why? Do I need to set something with rest adapter so that the response will be passed to retrofit error object.

Answer 1

Try this code:

@Override public void failure(RetrofitError error) {     String json =  new String(((TypedByteArray)error.getResponse().getBody()).getBytes());     Log.v("failure", json.toString()); } 

with Retrofit 2.0

@Override public void onFailure(Call<Example> call, Throwable t) {     String message = t.getMessage();     Log.d("failure", message); } 

Answer 2

if error in String format:

public Sring getErrorBodyAsString(RetrofitError error) {           return (String) error.getBodyAs(String.class) } 

if you need custom object:

class ErrorResponse {    @SerializedName("error")    int errorCode;     @SerializedName("msg")    String msg; }  public T getErrorBody(RetrofitError error, Class<T> clazz) {           return (T) error.getBodyAs(clazz); }