如果没有互联网或返回null，应用程序始终会崩溃。 以下是日志
FATAL EXCEPTION: OkHttp Dispatcher
Process: , PID: 24400
java.lang.NullPointerException: interceptor
RestClient$1@301dd345 returned null
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:157)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
at okhttp3.RealCall$AsyncCall.execute(RealCall.java:147)
at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
这是Log
05-01 09:17:37.920 24400-24439/? D/OkHttp: --> END GET
05-01 09:17:37.922 24400-24439/? D/OkHttp: <-- HTTP FAILED: java.net.UnknownHostException: Unable to resolve host "": No address associated with hostname
05-01 09:17:37.923 24400-24439/? W/System.err: java.net.UnknownHostException: Unable to resolve host "": No address associated with hostname
05-01 09:17:37.923 24400-24439/? W/System.err: at java.net.InetAddress.lookupHostByName(InetAddress.java:427)
05-01 09:17:37.924 24400-24439/? W/System.err: at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
05-01 09:17:37.924 24400-24439/? W/System.err: at java.net.InetAddress.getAllByName(InetAddress.java:215)
05-01 09:17:37.924 24400-24439/? W/System.err: at okhttp3.Dns$1.lookup(Dns.java:39)
05-01 09:17:37.924 24400-24439/? W/System.err: at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:185)
05-01 09:17:37.924 24400-24439/? W/System.err: at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:149)
05-01 09:17:37.925 24400-24439/? W/System.err: at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:84)
05-01 09:17:37.925 24400-24439/? W/System.err: at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:213)
05-01 09:17:37.927 24400-24439/? W/System.err: at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:134)
05-01 09:17:37.927 24400-24439/? W/System.err: at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:113)
05-01 09:17:37.927 24400-24439/? W/System.err: at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
05-01 09:17:37.927 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
05-01 09:17:37.927 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
05-01 09:17:37.928 24400-24439/? W/System.err: at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
05-01 09:17:37.928 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
05-01 09:17:37.928 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
05-01 09:17:37.928 24400-24439/? W/System.err: at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
05-01 09:17:37.928 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
05-01 09:17:37.928 24400-24439/? W/System.err: at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:212)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
05-01 09:17:37.929 24400-24439/? W/System.err: at RestClient$1.intercept(RestClient.java:66)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
05-01 09:17:37.929 24400-24439/? W/System.err: at okhttp3.RealCall$AsyncCall.execute(RealCall.java:147)
05-01 09:17:37.930 24400-24439/? W/System.err: at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
05-01 09:17:37.930 24400-24439/? W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
05-01 09:17:37.930 24400-24439/? W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
05-01 09:17:37.930 24400-24439/? W/System.err: at java.lang.Thread.run(Thread.java:818)
我的网络类代码。我在这里提出要求。 java.lang.NullPointerException：拦截器RestClient $ 1 @ 301dd345返回null 同一序列中的另一个日志显示此消息 D / OkHttp：＆lt; - HTTP FAILED：java.net.UnknownHostException：无法解析主机“example.com”：没有与主机名关联的地址
public static String API_BASE_URL = "";
public static final String BASE_URL_QA = "https://example.com";
public static final String BASE_URL_LIVE = "https://example.com";
private Retrofit builder;
OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
private Response response;
public RestClient() {
if (SharedPreferenceManager.getSharedInstance().getStringFromPreferances(Constants.SharedPreferenceKeys.QA.getKey()).equals("yes")) {
BASE_URL = BASE_URL_QA;
} else {
BASE_URL = BASE_URL_LIVE;
}
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
logging.setLevel(HttpLoggingInterceptor.Level.BODY);
if (!AppData.isTrue) {
httpClient.interceptors().add(new Interceptor() {
@Override
public okhttp3.Response intercept(Chain chain) throws IOException {
try {
Request original = chain.request();
// Request customization: add request headers
Request.Builder requestBuilder = original.newBuilder();
if (AppData.isBearer) {
String token = getAccessToken();
String bearer = getToken_type();
if (AppUtils.getAppUtils(null).isNullOrEmpty(token) && SharedPreferenceManager.getSharedInstance().getFromPreferences() != null) {
token = SharedPreferenceManager.getToken();
bearer = SharedPreferenceManager.getTokentype();
}
requestBuilder.addHeader("Authorization", bearer + " " + token);
}
requestBuilder.addHeader("key", "");
Request request = requestBuilder.build();
AppData.isTrue = false;
response = chain.proceed(request);
} catch (Exception e) {
e.printStackTrace();
} catch (Error e2) {
Log.e("", "ROME parse error2: " + e2.toString());
}
return response;
}
});
}
httpClient.addInterceptor(logging);
OkHttpClient shortHttpClient = httpClient.readTimeout(60, TimeUnit.SECONDS)
.writeTimeout(60, TimeUnit.SECONDS)
.connectTimeout(20, TimeUnit.SECONDS)
.retryOnConnectionFailure(true)
.build();
builder = new Retrofit.Builder().
baseUrl(BASE_URL).
addConverterFactory(new ToStringConverterFactory()).
addConverterFactory(GsonConverterFactory.create()).
addCallAdapterFactory(RxJavaCallAdapterFactory.create()).
client(shortHttpClient).
build();
}
public <S> S createService(Class<S> serviceClass) {
return builder.create(serviceClass);
}