Question

您好我正在开发我已集成BigQuery的Android应用程序。我看到有时在BigQuery表中插入记录时会遇到很多异常。我们不是这方面的专长，而是开始学习这项新技术。如果你们能帮助我，那就太棒了。

   java.net.UnknownHostException: Unable to resolve host "accounts.google.com": No address associated with hostname
          at java.net.InetAddress.lookupHostByName(InetAddress.java:424)
          at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
          at java.net.InetAddress.getAllByName(InetAddress.java:214)
          at com.android.okhttp.internal.Dns$1.getAllByName(Dns.java:28)
          at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:216)
          at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:122)
          at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:292)
          at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
          at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
          at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
          at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:89)
          at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197)
          at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:254)
          at com.google.a.a.c.a.c.a(NetHttpRequest.java:77)
          at com.google.a.a.c.r.p(HttpRequest.java:972)
          at com.google.a.a.a.a.h.a(TokenRequest.java:307)
          at com.google.a.a.b.a.a.b.f(GoogleCredential.java:384)
          at com.google.a.a.a.a.c.h(Credential.java:489)
          at com.google.a.a.a.a.c.a(Credential.java:217)
          at com.google.a.a.c.r.p(HttpRequest.java:859)
          at com.google.a.a.b.d.c.c(AbstractGoogleClientRequest.java:469)
          at com.test.utils.c.c(CommonUtility.java:2730)
          at com.test.services.AppInstallIntentService.onHandleIntent(AppInstallIntentService.java:71)
          at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
          at android.os.Handler.dispatchMessage(Handler.java:102)
          at android.os.Looper.loop(Looper.java:136)
          at android.os.HandlerThread.run(HandlerThread.java:61)
   Caused by: libcore.io.GaiException: getaddrinfo failed: EAI_NODATA (No address associated with hostname)
          at libcore.io.Posix.getaddrinfo(Posix.java)
          at libcore.io.ForwardingOs.getaddrinfo(ForwardingOs.java:61)
          at java.net.InetAddress.lookupHostByName(InetAddress.java:405)
          at java.net.InetAddress.getAllByNameImpl(InetAddress.java:236)
          at java.net.InetAddress.getAllByName(InetAddress.java:214)
          at com.android.okhttp.internal.Dns$1.getAllByName(Dns.java:28)
          at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:216)
          at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:122)
          at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:292)
          at com.android.okhttp.internal.http.HttpEngine.sendSocketRequest(HttpEngine.java:255)
          at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:206)
          at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:345)
          at com.android.okhttp.internal.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:89)
          at com.android.okhttp.internal.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:197)
          at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:254)
          at com.google.a.a.c.a.c.a(NetHttpRequest.java:77)
          at com.google.a.a.c.r.p(HttpRequest.java:972)
          at com.google.a.a.a.a.h.a(TokenRequest.java:307)
          at com.google.a.a.b.a.a.b.f(GoogleCredential.java:384)
          at com.google.a.a.a.a.c.h(Credential.java:489)
          at com.google.a.a.a.a.c.a(Credential.java:217)
          at com.google.a.a.c.r.p(HttpRequest.java:859)
          at com.google.a.a.b.d.c.c(AbstractGoogleClientRequest.java:469)
          at com.test.utils.c.c(CommonUtility.java:2730)
          at com.test.services.AppInstallIntentService.onHandleIntent(AppInstallIntentService.java:71)
          at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
          at android.os.Handler.dispatchMessage(Handler.java:102)
          at android.os.Looper.loop(Looper.java:136)
          at android.os.HandlerThread.run(HandlerThread.java:61)

Answer 1

此异常抛出表示无法确定主机的IP地址。

当您连接到有效的wifi但路由器未接收互联网时，也会引发此异常。很容易重现这个：

连接到有效的wifi 现在在插入路由器时从路由器上拔下电缆

你会发现这个错误!!

您无法真正解决此问题，您只能优雅地通知用户。（类似于 - ＆＃34;无法建立连接＆＃34;）

还要确保您已在AndroidManifest.xml中添加了权限。

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

Answer 2

您是否已将INTERNET权限添加到清单文件中。

如果没有，请在AndroidManifest.xml：

中的应用标记外添加以下行

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

java.net.UnknownHostException无法解析主机“accounts.google.com”：在bigquery中插入行时没有与主机名关联的地址

2 个答案: