flutter：未處理的異常：SocketException：操作系統錯誤：沒有到主機的路由，

Question

我使用本地主機運行我的應用程序，我的手機和筆記本電腦連接到同一個 WiFi。 我確實檢查了 ip 地址，但為什么我仍然有這個錯誤？ 在此之前我使用過本地主機，但 go 沒有錯誤。 它只是發生

Launching lib\main.dart on GT I9300 in debug mode...
E/flutter (14807): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: FormatException: Unexpected character (at character 1)
E/flutter (14807): <br />
E/flutter (14807): ^
E/flutter (14807):
[38;5;244mE/flutter (14807): #0      _ChunkedJsonParser.fail  (dart:convert-patch/convert_patch.dart:1394:5)[39;49m
[38;5;244mE/flutter (14807): #1      _ChunkedJsonParser.parseNumber  (dart:convert-patch/convert_patch.dart:1261:9)[39;49m
[38;5;244mE/flutter (14807): #2      _ChunkedJsonParser.parse  (dart:convert-patch/convert_patch.dart:926:22)[39;49m
[38;5;244mE/flutter (14807): #3      _parseJson  (dart:convert-patch/convert_patch.dart:31:10)[39;49m
[38;5;244mE/flutter (14807): #4      JsonDecoder.convert  (dart:convert/json.dart:505:36)[39;49m
[38;5;244mE/flutter (14807): #5      JsonCodec.decode  (dart:convert/json.dart:153:41)[39;49m
[38;5;244mE/flutter (14807): #6      jsonDecode  (dart:convert/json.dart:96:10)[39;49m
[38;5;248mE/flutter (14807): #7      _TukarKataLaluanState.tukar[39;49m
E/flutter (14807): <asynchronous suspension>
[38;5;248mE/flutter (14807): #8      _TukarKataLaluanState.boxform.<anonymous closure>[39;49m
[38;5;244mE/flutter (14807): #9      _InkResponseState._handleTap[39;49m
[38;5;244mE/flutter (14807): #10     _InkResponseState.build.<anonymous closure>[39;49m
[38;5;244mE/flutter (14807): #11     GestureRecognizer.invokeCallback[39;49m
[38;5;244mE/flutter (14807): #12     TapGestureRecognizer.handleTapUp[39;49m
[38;5;244mE/flutter (14807): #13     BaseTapGestureRecognizer._checkUp[39;49m
[38;5;244mE/flutter (14807): #14     BaseTapGestureRecognizer.acceptGesture[39;49m
[38;5;244mE/flutter (14807): #15     GestureArenaManager.sweep[39;49m
[38;5;244mE/flutter (14807): #16     GestureBinding.handleEvent[39;49m
[38;5;244mE/flutter (14807): #17     GestureBinding.dispatchEvent[39;49m
[38;5;244mE/flutter (14807): #18     GestureBinding._handlePointerEvent[39;49m
[38;5;244mE/flutter (14807): #19     GestureBinding._flushPointerEventQueue[39;49m
[38;5;244mE/flutter (14807): #20     GestureBinding._handlePointerDataPacket[39;49m
[38;5;244mE/flutter (14807): #21     _rootRunUnary  (dart:async/zone.dart:1196:13)[39;49m
[38;5;244mE/flutter (14807): #22     _CustomZone.runUnary  (dart:async/zone.dart:1085:19)[39;49m
[38;5;244mE/flutter (14807): #23     _CustomZone.runUnaryGuarded  (dart:async/zone.dart:987:7)[39;49m
[38;5;244mE/flutter (14807): #24     _invoke1  (dart:ui/hooks.dart:275:10)[39;49m
[38;5;244mE/flutter (14807): #25     _dispatchPointerDataPacket  (dart:ui/hooks.dart:184:5)[39;49m
E/flutter (14807):
E/flutter (16045): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60710
E/flutter (16045):
E/flutter (18300): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60720
E/flutter (18300):
E/flutter (18300): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60721
E/flutter (18300):
E/flutter (18300): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60722
E/flutter (18300):
E/flutter (18300): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60727
E/flutter (18300):
E/flutter (18300): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60732
E/flutter (18300):
E/flutter (18300): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60745
E/flutter (18300):
E/flutter (18300): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: SocketException: OS Error: No route to host, errno = 113, address = 172.20.10.3, port = 60750
E/flutter (18300):

Answer 1

當我連接到 wi-fi 時出現此錯誤，但在該 wi-fi 連接上無法使用互聯網。