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Question

danilshik

Asked:2020-04-13 01:55:13 +0000 UTC2020-04-13 01:55:13 +0000 UTC 2020-04-13 01:55:13 +0000 UTC

Android连接到本地服务器的问题

772

我正在编写一个 Android 应用程序。

交互方式：REST API。

服务器：WampServer 本地服务器

问题：没有连接。我正在尝试连接到 API，但它不起作用：

编码：

public class ApiUtils {
//    private static String apiUrl = "https://localhost/usatu/";
//    private static String apiUrl = "https://192.168.0.102/usatu/";
 //   private static String apiUrl = "https://192.168.0.1/usatu/";
      private static String apiUrl = "https://10.0.3.2/"
    private static Retrofit retrofit;
    private static APIService api;

    public static Retrofit getRetrofit(){

        if(retrofit == null){
            retrofit = new Retrofit.Builder()
                    .baseUrl(apiUrl)
                    .addConverterFactory(GsonConverterFactory.create())
                    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                    .build();
        }

        return retrofit;
    }


    public static APIService getApi(){
        if(api == null){
            api = getRetrofit().create(APIService.class);
        }
        return api;
    }
}

我根本无法连接到服务器：回溯：

W/System.err: io.reactivex.exceptions.OnErrorNotImplementedException: Failed to connect to /192.168.0.1:443
        at io.reactivex.internal.functions.Functions$OnErrorMissingConsumer.accept(Functions.java:704)
        at io.reactivex.internal.functions.Functions$OnErrorMissingConsumer.accept(Functions.java:701)
        at io.reactivex.internal.observers.ConsumerSingleObserver.onError(ConsumerSingleObserver.java:47)
        at io.reactivex.internal.operators.single.SingleObserveOn$ObserveOnSingleObserver.run(SingleObserveOn.java:79)
        at io.reactivex.android.schedulers.HandlerScheduler$ScheduledRunnable.run(HandlerScheduler.java:109)
        at android.os.Handler.handleCallback(Handler.java:789)
        at android.os.Handler.dispatchMessage(Handler.java:98)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6541)
W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
    Caused by: java.net.ConnectException: Failed to connect to /192.168.0.1:443
        at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:248)
        at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:166)
        at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:257)
        at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
        at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
W/System.err:     at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254)
        at okhttp3.RealCall.execute(RealCall.java:92)
        at retrofit2.OkHttpCall.execute(OkHttpCall.java:186)
        at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:41)
        at io.reactivex.Observable.subscribe(Observable.java:10955)
        at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
        at io.reactivex.Observable.subscribe(Observable.java:10955)
        at io.reactivex.internal.operators.observable.ObservableSingleSingle.subscribeActual(ObservableSingleSingle.java:35)
W/System.err:     at io.reactivex.Single.subscribe(Single.java:2779)
        at io.reactivex.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
        at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:452)
        at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:61)
        at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:52)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
W/System.err:     at java.lang.Thread.run(Thread.java:764)
    Caused by: java.net.ConnectException: failed to connect to /192.168.0.1 (port 443) from /192.168.234.231 (port 55154) after 10000ms: isConnected failed: ECONNREFUSED (Connection refused)
        at libcore.io.IoBridge.isConnected(IoBridge.java:273)
        at libcore.io.IoBridge.connectErrno(IoBridge.java:188)
        at libcore.io.IoBridge.connect(IoBridge.java:130)
W/System.err:     at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:129)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:356)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:356)
        at java.net.Socket.connect(Socket.java:616)
        at okhttp3.internal.platform.AndroidPlatform.connectSocket(AndroidPlatform.java:73)
        at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:246)
        ... 33 more
W/System.err: Caused by: android.system.ErrnoException: isConnected failed: ECONNREFUSED (Connection refused)
        at libcore.io.IoBridge.isConnected(IoBridge.java:262)
        ... 43 more

虽然如果我通过浏览器访问服务器，http://localhost/usatu/v1/semesters会返回正确的结果。

ip 使用 ipconfig (window) 命令确定

在 Genymotion 模拟器上测试

更新：通过模拟器上的浏览器，我连接到地址htttp://10.0.3.2/v1/semesters 并且它在那里工作，但应用程序中的错误并没有消失

接口：

public interface APIService {
    @GET("v1/semesters")
    Single<List<Semester>> getSemesters();
}

主持人：

@InjectViewState
public class SearchScheduleStudentPresenter extends BasePresenter<SearchScheduleStudentView> {

    private SearchScheduleStudentView mView;

    public SearchScheduleStudentPresenter(SearchScheduleStudentView view) {
        mView = view;
    }

    public void getSemesters(){
        mCompositeDisposable.add(
                ApiUtils.getApi()
                .getSemesters()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(
                        response -> mView.showSemesters(response)
                )
        );


    }
}

看法

public interface SearchScheduleStudentView extends BaseView {

    void showSemesters(List<Semester> semesters);

}

分段：

@Override
    public void showSemesters(List<Semester> semesters) {
        List<String> semestersName = new ArrayList<>();
        for (Semester semester : semesters) {
            semestersName.add(semester.getName());

        }
//        adapter = new ArrayAdapter<>(getContext(), android.R.layout.simple_spinner_item, semestersName);
    }

显现

<uses-permission android:name="android.permission.INTERNET"/>

在浏览器中检查模拟器上的工作

2 个回答

Voted

Petr Vytovtov · Answer 1 · 2020-04-13T02:32:26Z

Petr Vytovtov

2020-04-13T02:32:26Z2020-04-13T02:32:26Z

看起来您正在尝试使用路由器的 IP 进行连接，而不是您的计算机。尝试取消注释地址192.168.0.102。

您可以阅读更多关于解释命令输出的信息ipconfig，例如，这里。

2

danilshik · Answer 2 · 2020-04-18T04:35:19Z

Best Answer

danilshik

2020-04-18T04:35:19Z2020-04-18T04:35:19Z

错误是我指定了 https 而不是 http。

您可以使用网络上计算机的 ip（在我的情况下，它是 192.168.0.102）或 10.0.3.2（永久），从 2.2 版开始添加到 Genymotion

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