前言

自己在做一個專案，網際網路app。 app的資料是在伺服器上，我已經搭建。 手機端是android程式app。 現在訪問伺服器資料出現錯誤，標記一下，以後解決

11-02 18:53:47.729 16511-16511/? I/HomePagePresenter: query items 
    com.androidnetworking.error.ANError: java.net.ConnectException: Failed to connect to littleox.cn/202.182.97.221:80
        at com.rx2androidnetworking.Rx2InternalNetworking$SimpleANObservable.subscribeActual(Rx2InternalNetworking.java:235)
        at io.reactivex.Observable.subscribe(Observable.java:10981)
        at io.reactivex.internal.operators.observable.ObservableSingleSingle.subscribeActual(ObservableSingleSingle.java:35)
        at io.reactivex.Single.subscribe(Single.java:2801)
        at io.reactivex.internal.operators.single.SingleSubscribeOn$SubscribeOnObserver.run(SingleSubscribeOn.java:89)
        at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:452)
        at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
        at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
        at java.lang.Thread.run(Thread.java:784)
     Caused by: java.net.ConnectException: Failed to connect to littleox.cn/202.182.97.221:80
        at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:240)
        at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:158)
        at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:256)
        at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:134)
        at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:113)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
        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)
        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)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at com.androidnetworking.interceptors.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.java:221)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
        at okhttp3.RealCall.execute(RealCall.java:77)
        at com.rx2androidnetworking.Rx2InternalNetworking$SimpleANObservable.subscribeActual(Rx2InternalNetworking.java:187)
        at io.reactivex.Observable.subscribe(Observable.java:10981) 
        at io.reactivex.internal.operators.observable.ObservableSingleSingle.subscribeActual(ObservableSingleSingle.java:35) 
        at io.reactivex.Single.subscribe(Single.java:2801) 
        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:66) 
        at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57) 
        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) 
        at java.lang.Thread.run(Thread.java:784) 
     Caused by: java.net.ConnectException: failed to connect to littleox.cn/202.182.97.221 (port 80) from /192.168.30.203 (port 52876) after 60000ms: 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)
        at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:129)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:357)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:201)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:183)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:356)
        at java.net.Socket.connect(Socket.java:616)
11-02 18:53:47.730 16511-16511/? I/HomePagePresenter:     at okhttp3.internal.platform.AndroidPlatform.connectSocket(AndroidPlatform.java:70)
        at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:238)
        	... 33 more
     Caused by: android.system.ErrnoException: isConnected failed: ECONNREFUSED (Connection refused)
        at libcore.io.IoBridge.isConnected(IoBridge.java:262)
        	... 43 more
 

初步懷疑是伺服器埠不匹配。