Question

当API返回错误响应时，我使用Okhttp3拦截器来刷新访问令牌（我使用的API很奇怪，并且还返回200以获取错误响应，所以我不确定使用Authenticator）。这是我的拦截器代码：

public class MyInterceptor implements Interceptor {
@Override
public Response intercept(@NonNull Chain chain) throws IOException {
    Request request = chain.request();
    Response response = chain.proceed(request);
    ResponseBody responseBody = response.body();
    String responseBodyString = response.body().string();
    Response returnResponse = response.newBuilder().body(ResponseBody.create(responseBody.contentType(), responseBodyString.getBytes())).build();
    if(responseBodyString.contains("error")) {
        DataDownloadManager.getInstance().downloadToken();
        LogUtils.LOGE("Interceptor", "DownloadManager called");
        Request newRequest = request.newBuilder().build();
        LogUtils.LOGE("Interceptor", "new request dispatched");
        return chain.proceed(newRequest);
    }
    else {
        LogUtils.LOGE("Interceptor", "Outside");
        return returnResponse;
    }
  }
}

这是我的DataDownloadManager：

public final class DataDownloadManager {

...... 

public static DataDownloadManager getInstance() {
    if (instance == null) {
        instance = new DataDownloadManager();
    }
    return instance;
}

public void downloadToken() {
    try {
        AccessToken accessToken = client.geteTouchesAPI().getAccessToken(APIUtils.ACCOUNT_ID, APIUtils.ACCOUNT_KEY)
                .execute().body();
        AccountUtils.setAccessToken(MyApplication.getAppContext(), accessToken.getToken());
    } catch (IOException e) {
        e.printStackTrace();
    }
}

public void downloadSessionList() {
    client.geteTouchesAPI().getSessionList(AccountUtils.getAccessToken(MyApplication.getAppContext()), APIUtils.EVENT_ID).enqueue(new Callback<List<SessionList>>() {
        @Override
        public void onResponse(Call<List<SessionList>> call, Response<List<SessionList>> response) {
            if (response.isSuccessful()) {
                for (SessionList sessionList : response.body()) {
                    LogUtils.LOGE(LOG_TAG, sessionList.getSessionId());
                    LogUtils.LOGE(LOG_TAG, sessionList.getSessionKey());
                }
            }
        }

        @Override
        public void onFailure(Call<List<SessionList>> call, Throwable t) {
            LogUtils.LOGE(LOG_TAG, t.toString());
        }
    });
  }
}

这是我的Logcat：

07-15 20:17:12.530 29634-29992/com.my.app E/Interceptor: Outside
07-15 20:17:12.533 29634-29992/com.my.app E/AccountUtils: 
Setting access token to: ....
07-15 20:17:12.534 29634-29992/com.my.app E/Interceptor: 
DownloadManager called
07-15 20:17:12.534 29634-29992/com.my.app E/Interceptor: new 
request dispatched
07-15 20:17:13.170 29634-29634/com.my.app 
E/DataDownloadManager: java.lang.IllegalStateException: Expected 
BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 path $

我的初始调用是DataDownloadManager.getInstance().downloadSessionList()，即使在错误响应之后，在logcat中也可以看到，请求不会再次执行。相反，返回初始失败的响应导致错误，如logcat的最后一行所示，不应该是这种情况。因为我正在重试错误请求，所以应该执行的唯一事情就是onResponse()的{{1}}回调，而downloadSessionList()执行，而且只执行一次（我的第二次执行）请求去？）。

我怀疑这是一个同步问题，但我无法确切地知道在哪里。

处理异步和同步请求同时改进2

0 个答案: