Question

从后台服务调用API和移动屏幕关闭时。得到了以下错误。

java.net.UnknownHostException：无法解决   主机：没有与主机名关联的地址   W / System.err：位于   java.net.InetAddress.lookupHostByName（InetAddress.java:424）                     在java.net.InetAddress.getAllByNameImpl（InetAddress.java:236）                     在java.net.InetAddress.getAllByName（InetAddress.java:214）                     在com.android.okhttp.internal.Dns $ 1.getAllByName（Dns.java:28）                     在com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress（RouteSelector.java:216）                     在com.android.okhttp.internal.http.RouteSelector.next（RouteSelector.java:122）                     在com.android.okhttp.internal.http.HttpEngine.connect（HttpEngine.java:292）                     在com.android.okhttp.internal.http.HttpEngine.sendSocketRequest（HttpEngine.java:255）                     在com.android.okhttp.internal.http.HttpEngine.sendRequest（HttpEngine.java:206）                     在com.android.okhttp.internal.http.HttpURLConnectionImpl.execute（HttpURLConnectionImpl.java:345）                     在com.android.okhttp.internal.http.HttpURLConnectionImpl.connect（HttpURLConnectionImpl.java:89）                     在com.android.okhttp.internal.http.HttpsURLConnectionImpl.connect（HttpsURLConnectionImpl.java:161）
 When API call from background service and mobile screen is off. Got the following error.
java.net.UnknownHostException: Unable to resolve host "": No address associated with hostname
W/System.err:     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.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:161)

Answer 1

如果尚未这样做，请将权限添加到AndroidManifest.xml文件中。

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

我认为这是此UnknownHostException错误消息的最常见原因。另一个可能的原因是您的Internet连接实际上已断开。

java.net.UnknownHostException：无法解析主机没有与主机名关联的地址

1 个答案: