如何以及在哪里处理此错误并阻止我的应用程序崩溃?
$ node app.js
Server Started at port 3000
events.js:200
throw er; // Unhandled 'error' event
^
Error: 14 UNAVAILABLE: Name resolution failed for target firestore.googleapis.com:443
at Object.callErrorFromStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\call.js:30:26)
at Object.onReceiveStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\client.js:327:49)
at Object.onReceiveStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\client-interceptors.js:303:181)
at Http2CallStream.outputStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\call-stream.js:114:27)
at Http2CallStream.maybeOutputStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\call-stream.js:153:22)
at Http2CallStream.endCall (D:\food_list\node_modules\@grpc\grpc-js\build\src\call-stream.js:140:18)
at Http2CallStream.cancelWithStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\call-stream.js:441:14)
at ChannelImplementation.tryPick (D:\food_list\node_modules\@grpc\grpc-js\build\src\channel.js:214:32)
at ChannelImplementation._startCallStream (D:\food_list\node_modules\@grpc\grpc-js\build\src\channel.js:244:14)
at Http2CallStream.start (D:\food_list\node_modules\@grpc\grpc-js\build\src\call-stream.js:418:22)
Emitted 'error' event on ClientReadableStreamImpl instance at:
at Object.onReceiveStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\client.js:327:28)
at Object.onReceiveStatus (D:\food_list\node_modules\@grpc\grpc-js\build\src\client-interceptors.js:303:181)
[... lines matching original stack trace ...]
at Http2CallStream.start (D:\food_list\node_modules\@grpc\grpc-js\build\src\call-stream.js:418:22)
at BaseStreamingInterceptingCall.start (D:\food_list\node_modules\@grpc\grpc-js\build\src\client-interceptors.js:275:19) { code: 14,
details: 'Name resolution failed for target firestore.googleapis.com:443',
metadata: Metadata { internalRepr: Map {}, options: {} }
}ps:当我在没有互联网的情况下运行应用程序时,应用程序崩溃。
发布于 2021-01-27 05:01:07
这是DNS错误。DNS是互联网连接中使用的一种服务。你的应用程序正在尝试访问互联网,特别是Firestore,但无法访问。这就是为什么会有错误。这个问题没有简单的解决办法,因为你还必须编程让应用程序在离线时运行的行为。
发布于 2020-04-25 01:04:17
错误堆栈跟踪显示:
Emitted 'error' event on ClientReadableStreamImpl instance at:这意味着将引发错误,因为流正在发出错误事件,而您没有处理该事件。你可以通过在你正在读取的流上调用stream.on('error', callback)来解决这个问题。
https://stackoverflow.com/questions/61254821
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