Java Retrofit 2.0 如何获得反序列化的错误 response.body
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时间：2020-08-11 12:41:22 来源:igfitidea点击:
Retrofit 2.0 how to get deserialised error response.body
提问by Piotr Boho
I'm using Retrofit 2.0.0-beta1.
我正在使用Retrofit 2.0.0-beta1。
In tests i have an alternate scenario and expect error HTTP 400
在测试中，我有一个替代方案并期望错误 HTTP 400
I would like to have retrofit.Response<MyError> responsebut response.body() == null
我想要retrofit.Response<MyError> response但是response.body() == null
MyError is not deserialised - i see it only here
MyError 没有反序列化 - 我只在这里看到它
response.errorBody().string()
but it doesn't give me MyError as object
但它没有给我 MyError 作为对象
回答by Piotr Boho
solved it by:
通过以下方式解决：
Converter<MyError> converter =
(Converter<MyError>)HymansonConverterFactory.create().get(MyError.class);
MyError myError = converter.fromBody(response.errorBody());
回答by JFreeman
In Retrofit 2.0 beta2 this is the way that I'm getting error responses:
在 Retrofit 2.0 beta2 中，这是我收到错误响应的方式：
Synchronous
try { Call<RegistrationResponse> call = backendServiceApi.register(data.in.account, data.in.password, data.in.email); Response<RegistrationResponse> response = call.execute(); if (response != null && !response.isSuccess() && response.errorBody() != null) { Converter<ResponseBody, BasicResponse> errorConverter = MyApplication.getRestClient().getRetrofitInstance().responseConverter(BasicResponse.class, new Annotation[0]); BasicResponse error = errorConverter.convert(response.errorBody()); //DO ERROR HANDLING HERE return; } RegistrationResponse registrationResponse = response.body(); //DO SUCCESS HANDLING HERE } catch (IOException e) { //DO NETWORK ERROR HANDLING HERE }Asynchronous
Call<BasicResponse> call = service.loadRepo(); call.enqueue(new Callback<BasicResponse>() { @Override public void onResponse(Response<BasicResponse> response, Retrofit retrofit) { if (response != null && !response.isSuccess() && response.errorBody() != null) { Converter<ResponseBody, BasicResponse> errorConverter = retrofit.responseConverter(BasicResponse.class, new Annotation[0]); BasicResponse error = errorConverter.convert(response.errorBody()); //DO ERROR HANDLING HERE return; } RegistrationResponse registrationResponse = response.body(); //DO SUCCESS HANDLING HERE } @Override public void onFailure(Throwable t) { //DO NETWORK ERROR HANDLING HERE } });
同步
try { Call<RegistrationResponse> call = backendServiceApi.register(data.in.account, data.in.password, data.in.email); Response<RegistrationResponse> response = call.execute(); if (response != null && !response.isSuccess() && response.errorBody() != null) { Converter<ResponseBody, BasicResponse> errorConverter = MyApplication.getRestClient().getRetrofitInstance().responseConverter(BasicResponse.class, new Annotation[0]); BasicResponse error = errorConverter.convert(response.errorBody()); //DO ERROR HANDLING HERE return; } RegistrationResponse registrationResponse = response.body(); //DO SUCCESS HANDLING HERE } catch (IOException e) { //DO NETWORK ERROR HANDLING HERE }异步
Call<BasicResponse> call = service.loadRepo(); call.enqueue(new Callback<BasicResponse>() { @Override public void onResponse(Response<BasicResponse> response, Retrofit retrofit) { if (response != null && !response.isSuccess() && response.errorBody() != null) { Converter<ResponseBody, BasicResponse> errorConverter = retrofit.responseConverter(BasicResponse.class, new Annotation[0]); BasicResponse error = errorConverter.convert(response.errorBody()); //DO ERROR HANDLING HERE return; } RegistrationResponse registrationResponse = response.body(); //DO SUCCESS HANDLING HERE } @Override public void onFailure(Throwable t) { //DO NETWORK ERROR HANDLING HERE } });
Update for Retrofit 2 beta3:
Retrofit 2 beta3 的更新：
- Synchronous - not changed
Asynchronous - Retrofit parameter was removed from onResponse
Call<BasicResponse> call = service.loadRepo(); call.enqueue(new Callback<BasicResponse>() { @Override public void onResponse(Response<BasicResponse> response) { if (response != null && !response.isSuccess() && response.errorBody() != null) { Converter<ResponseBody, BasicResponse> errorConverter = MyApplication.getRestClient().getRetrofitInstance().responseConverter(BasicResponse.class, new Annotation[0]); BasicResponse error = errorConverter.convert(response.errorBody()); //DO ERROR HANDLING HERE return; } RegistrationResponse registrationResponse = response.body(); //DO SUCCESS HANDLING HERE } @Override public void onFailure(Throwable t) { //DO NETWORK ERROR HANDLING HERE } });
- 同步 - 未更改
异步 - 从 onResponse 中删除了 Retrofit 参数
Call<BasicResponse> call = service.loadRepo(); call.enqueue(new Callback<BasicResponse>() { @Override public void onResponse(Response<BasicResponse> response) { if (response != null && !response.isSuccess() && response.errorBody() != null) { Converter<ResponseBody, BasicResponse> errorConverter = MyApplication.getRestClient().getRetrofitInstance().responseConverter(BasicResponse.class, new Annotation[0]); BasicResponse error = errorConverter.convert(response.errorBody()); //DO ERROR HANDLING HERE return; } RegistrationResponse registrationResponse = response.body(); //DO SUCCESS HANDLING HERE } @Override public void onFailure(Throwable t) { //DO NETWORK ERROR HANDLING HERE } });
回答by shantanu
I did it this way for asynchronous calls using Retrofit 2.0-beta2:
对于使用 Retrofit 2.0-beta2 的异步调用，我是这样做的：
@Override
public void onResponse(Response<RegistrationResponse> response,
Retrofit retrofit) {
if (response.isSuccess()) {
// Do success handling here
} else {
try {
MyError myError = (MyError)retrofit.responseConverter(
MyError.class, MyError.class.getAnnotations())
.convert(response.errorBody());
// Do error handling here
} catch (IOException e) {
e.printStackTrace();
}
}
}
回答by Saif Bechan
I currently use a very easy implementation, which does not require to use converters or special classes. The code I use is the following:
我目前使用一个非常简单的实现，不需要使用转换器或特殊类。我使用的代码如下：
public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
DialogHelper.dismiss();
if (response.isSuccessful()) {
// Do your success stuff...
} else {
try {
JSONObject jObjError = new JSONObject(response.errorBody().string());
Toast.makeText(getContext(), jObjError.getJSONObject("error").getString("message"), Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(getContext(), e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}
回答by CoolMind
In https://stackoverflow.com/a/21103420/2914140and https://futurestud.io/tutorials/retrofit-2-simple-error-handlingthis variant is shown for Retrofit 2.1.0.
在https://stackoverflow.com/a/21103420/2914140和https://futurestud.io/tutorials/retrofit-2-simple-error-handling 中，此变体显示为 Retrofit 2.1.0。
call.enqueue(new Callback<MyResponse>() {
@Override
public void onResponse(Call<MyResponse> call, Response<MyResponse> response) {
if (response.isSuccessful()) {
...
} else {
Converter<ResponseBody, MyError> converter
= MyApplication.getRetrofit().responseBodyConverter(
MyError.class, new Annotation[0]);
MyError errorResponse = null;
try {
errorResponse = converter.convert(response.errorBody());
} catch (IOException e) {
e.printStackTrace();
}
}
}
回答by KRUPEN GHETIYA
This seems to be the problem when you use OkHttp along with Retrofit, so either you can remove OkHttp or use code below to get error body:
当您将 OkHttp 与 Retrofit 一起使用时，这似乎是问题，因此您可以删除 OkHttp 或使用下面的代码来获取错误正文：
if (!response.isSuccessful()) {
InputStream i = response.errorBody().byteStream();
BufferedReader r = new BufferedReader(new InputStreamReader(i));
StringBuilder errorResult = new StringBuilder();
String line;
try {
while ((line = r.readLine()) != null) {
errorResult.append(line).append('\n');
}
} catch (IOException e) {
e.printStackTrace();
}
}
回答by Pooja Gupta
I solved it by:
我通过以下方式解决了它：
if(!response.isSuccessful()){
Gson gson = new Gson();
MyErrorMessage message=gson.fromJson(response.errorBody().charStream(),MyErrorMessage.class);
if(message.getCode()==ErrorCode.DUPLICATE_EMAIL_ID_CODE){
//DO Error Code specific handling
}else{
//DO GENERAL Error Code Specific handling
}
}
MyErrorMessage Class:
MyErrorMessage 类：
public class MyErrorMessage {
private int code;
private String message;
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
}
回答by Mike6679
try{
ResponseBody response = ((HttpException) t).response().errorBody();
JSONObject json = new JSONObject( new String(response.bytes()) );
errMsg = json.getString("message");
}catch(JSONException e){
return t.getMessage();
}
catch(IOException e){
return t.getMessage();
}
回答by Vins
@Override
public void onResponse(Call<Void> call, retrofit2.Response<Void> response) {
if (response.isSuccessful()) {
//Do something if response is ok
} else {
JsonParser parser = new JsonParser();
JsonElement mJson = null;
try {
mJson = parser.parse(response.errorBody().string());
Gson gson = new Gson();
MyError errorResponse = gson.fromJson(mJson, MyError.class);
} catch (IOException ex) {
ex.printStackTrace();
}
}
回答by Adam Johns
In Kotlin:
在科特林：
val call = APIClient.getInstance().signIn(AuthRequestWrapper(AuthRequest("1234567890z", "12341234", "nonce")))
call.enqueue(object : Callback<AuthResponse> {
override fun onResponse(call: Call<AuthResponse>, response: Response<AuthResponse>) {
if (response.isSuccessful) {
} else {
val a = object : Annotation{}
val errorConverter = RentalGeekClient.getRetrofitInstance().responseBodyConverter<AuthFailureResponse>(AuthFailureResponse::class.java, arrayOf(a))
val authFailureResponse = errorConverter.convert(response.errorBody())
}
}
override fun onFailure(call: Call<AuthResponse>, t: Throwable) {
}
})
