Api 如何使用flatter从https获取数据

我已经用ASP.net core编写了API，我想用Flatter从中获取数据，但我的代码有如下错误：

E/flutter (10049): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: HandshakeException: Handshake error in client (OS Error: 
E/flutter (10049):  CERTIFICATE_VERIFY_FAILED: unable to get local issuer certificate(handshake.cc:354))
E/flutter (10049): #0      IOClient.send (package:http/src/io_client.dart:33:24)
E/flutter (10049): <asynchronous suspension>
E/flutter (10049): #1      BaseClient._sendUnstreamed (package:http/src/base_client.dart:176:38)
E/flutter (10049): #2      BaseClient.get (package:http/src/base_client.dart:35:7)
E/flutter (10049): #3      get.<anonymous closure> (package:http/http.dart:46:36)
E/flutter (10049): #4      _withClient (package:http/http.dart:166:20)
E/flutter (10049): #5      get (package:http/http.dart:46:5)
E/flutter (10049): #6      APIServices.fetchStudent (package:aspapi/models/api.services.dart:9:12)
E/flutter (10049): #7      _StudentsState.getStudents (package:aspapi/ui/students.dart:17:19)
E/flutter (10049): #8      _StudentsState.build (package:aspapi/ui/students.dart:32:5)
E/flutter (10049): #9      StatefulElement.build (package:flutter/src/widgets/framework.dart:4619:28)
E/flutter (10049): #10     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4502:15)
E/flutter (10049): #11     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4675:11)
E/flutter (10049): #12     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #13     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4481:5)
E/flutter (10049): #14     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4666:11)
E/flutter (10049): #15     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4476:5)
E/flutter (10049): #16     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
E/flutter (10049): #17     Element.updateChild (package:flutter/src/widgets/framework.dart:3214:18)
E/flutter (10049): #18     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #19     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #20     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4481:5)
E/flutter (10049): #21     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4476:5)
E/flutter (10049): #22     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
E/flutter (10049): #23     Element.updateChild (package:flutter/src/widgets/framework.dart:3214:18)
E/flutter (10049): #24     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #25     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #26     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4481:5)
E/flutter (10049): #27     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4476:5)
E/flutter (10049): #28     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
E/flutter (10049): #29     Element.updateChild (package:flutter/src/widgets/framework.dart:3214:18)
E/flutter (10049): #30     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #31     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #32     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4481:5)
E/flutter (10049): #33     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4476:5)
E/flutter (10049): #34     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
E/flutter (10049): #35     MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:5947:32)
E/flutter (10049): #36     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
E/flutter (10049): #37     Element.updateChild (package:flutter/src/widgets/framework.dart:3214:18)
E/flutter (10049): #38     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #39     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4675:11)
E/flutter (10049): #40     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #41     ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:4481:5)
E/flutter (10049): #42     StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:4666:11)
E/flutter (10049): #43     ComponentElement.mount (package:flutter/src/widgets/framework.dart:4476:5)
E/flutter (10049): #44     Element.inflateWidget (package:flutter/src/widgets/framework.dart:3446:14)
E/flutter (10049): #45     Element.updateChild (package:flutter/src/widgets/framework.dart:3214:18)
E/flutter (10049): #46     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527
Debug service listening on ws://127.0.0.1:8773/6hBnRZt2y-g=/ws
Syncing files to device Android SDK built for x86...
E/flutter (10049): [ERROR:flutter/shell/common/shell.cc(202)] Dart Error: Unhandled exception:
E/flutter (10049): HandshakeException: Handshake error in client (OS Error: 
E/flutter (10049):  CERTIFICATE_VERIFY_FAILED: unable to get local issuer certificate(handshake.cc:354))
E/flutter (10049): #0      IOClient.send (package:http/src/io_client.dart:33:24)
E/flutter (10049): <asynchronous suspension>
E/flutter (10049): #1      BaseClient._sendUnstreamed (package:http/src/base_client.dart:176:38)
E/flutter (10049): #2      BaseClient.get (package:http/src/base_client.dart:35:7)
E/flutter (10049): #3      get.<anonymous closure> (package:http/http.dart:46:36)
E/flutter (10049): #4      _withClient (package:http/http.dart:166:20)
E/flutter (10049): #5      get (package:http/http.dart:46:5)
E/flutter (10049): #6      APIServices.fetchStudent (package:aspapi/models/api.services.dart:9:12)
E/flutter (10049): #7      _StudentsState.getStudents (package:aspapi/ui/students.dart:17:19)
E/flutter (10049): #8      _StudentsState.build (package:aspapi/ui/students.dart:32:5)
E/flutter (10049): #9      StatefulElement.build (package:flutter/src/widgets/framework.dart:4619:28)
E/flutter (10049): #10     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4502:15)
E/flutter (10049): #11     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4675:11)
E/flutter (10049): #12     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #13     StatefulElement.update (package:flutter/src/widgets/framework.dart:4707:5)
E/flutter (10049): #14     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #15     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #16     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #17     StatelessElement.update (package:flutter/src/widgets/framework.dart:4583:5)
E/flutter (10049): #18     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #19     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #20     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #21     ProxyElement.update (package:flutter/src/widgets/framework.dart:4862:5)
E/flutter (10049): #22     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #23     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #24     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #25     ProxyElement.update (package:flutter/src/widgets/framework.dart:4862:5)
E/flutter (10049): #26     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #27     RenderObjectElement.updateChildren (package:flutter/src/widgets/framework.dart:5522:32)
E/flutter (10049): #28     MultiChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:5957:17)
E/flutter (10049): #29     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #30     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #31     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4675:11)
E/flutter (10049): #32     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #33     StatefulElement.update (package:flutter/src/widgets/framework.dart:4707:5)
E/flutter (10049): #34     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #35     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #36     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #37     ProxyElement.update (package:flutter/src/widgets/framework.dart:4862:5)
E/flutter (10049): #38     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #39     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16)
E/flutter (10049): #40     StatefulElement.performRebuild (package:flutter/src/widgets/framework.dart:4675:11)
E/flutter (10049): #41     Element.rebuild (package:flutter/src/widgets/framework.dart:4218:5)
E/flutter (10049): #42     StatefulElement.update (package:flutter/src/widgets/framework.dart:4707:5)
E/flutter (10049): #43     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #44     SingleChildRenderObjectElement.update (package:flutter/src/widgets/framework.dart:5837:14)
E/flutter (10049): #45     Element.updateChild (package:flutter/src/widgets/framework.dart:3201:15)
E/flutter (10049): #46     ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4527:16

<application
        ...
        android:networkSecurityConfig="@xml/network_security_config">

  static Future fetchStudent() async{
    Dio dio = Dio();
    (dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
    (client){
      client.badCertificateCallback = (X509Certificate cert,String host,int port) => true;
      return client;
    };
    Response response = await dio.get(https://10.0.2.2:5001/api/student);
    return response.data;
  }

E/flatter（10049）：[错误：flatter/lib/ui/ui\u dart\u state.cc（157）]未处理的异常：握手异常：客户端握手错误（操作系统错误：
E/flatter（10049）：证书\验证\失败：无法获取本地颁发者证书（handshake.cc:354））
E/flatter（10049）：#0 IOClient.send（包：http/src/io_client.dart:33:24）
E/颤振（10049）：
E/flatter（10049）：#1个BaseClient._sendUnstreamed（包：http/src/base_client.dart:176:38）
E/flatter（10049）：#2 BaseClient.get（包：http/src/base_client.dart:35:7）
E/颤振（10049）：#3获得。（软件包：http/http.dart:46:36）
E/flatter（10049）：#4 34;与客户端（包：http/http.dart:166:20）
E/flatter（10049）：#5get（包：http/http.dart:46:5）
E/flatter（10049）：#6 APIServices.fetchStudent（包：aspapi/models/api.services.dart:9:12）
E/flatter（10049）：#7#StudentsState.getStudents（包：aspapi/ui/students.dart:17:19）
E/flatter（10049）：#8#StudentsState.build（包：aspapi/ui/students.dart:32:5）
E/flatter（10049）：#9 StatefulElement.build（包：flatter/src/widgets/framework.dart:4619:28）
E/flatter（10049）：#10 ComponentElement.performRebuild（包：flatter/src/widgets/framework.dart:4502:15）
E/flatter（10049）：#11 stateflement.performRebuild（包：flatter/src/widgets/framework.dart:4675:11）
E/flatter（10049）：#12 Element.rebuild（包：flatter/src/widgets/framework.dart:4218:5）
E/flatter（10049）：#13组件元素。_firstBuild（包：flatter/src/widgets/framework.dart:4481:5）
E/flatter（10049）：#14 StatefulElement._firstBuild（包：flatter/src/widgets/framework.dart:4666:11）
E/flatter（10049）：#15 ComponentElement.mount（包：flatter/src/widgets/framework.dart:4476:5）
E/flatter（10049）：#16 Element.inflateWidget（包：flatter/src/widgets/framework.dart:3446:14）
E/flatter（10049）：#17 Element.updateChild（包：flatter/src/widgets/framework.dart:3214:18）
E/flatter（10049）：#18 ComponentElement.performRebuild（包：flatter/src/widgets/framework.dart:4527:16）
E/flatter（10049）：#19 Element.rebuild（包：flatter/src/widgets/framework.dart:4218:5）
E/flatter（10049）：#20组件元素。firstBuild（包：flatter/src/widgets/framework.dart:4481:5）
E/flatter（10049）：#21 ComponentElement.mount（包：flatter/src/widgets/framework.dart:4476:5）
E/flatter（10049）：#22 Element.inflateWidget（包：flatter/src/widgets/framework.dart:3446:14）
E/flatter（10049）：#23 Element.updateChild（包：flatter/src/widgets/framework.dart:3214:18）
E/flatter（10049）：#24 ComponentElement.performRebuild（包：flatter/src/widgets/framework.dart:4527:16）
E/flatter（10049）：#25 Element.rebuild（包：flatter/src/widgets/framework.dart:4218:5）
E/flatter（10049）：#26组件元素。_firstBuild（包：flatter/src/widgets/framework.dart:4481:5）
E/flatter（10049）：#27 ComponentElement.mount（包：flatter/src/widgets/framework.dart:4476:5）
E/flatter（10049）：#28 Element.inflateWidget（包：flatter/src/widgets/framework.dart:3446:14）
E/flatter（10049）：#29 Element.updateChild（包：flatter/src/widgets/framework.dart:3214:18）
E/flatter（10049）：#30 ComponentElement.performRebuild（包：flatter/src/widgets/framework.dart:4527:16）
E/flatter（10049）：#31 Element.rebuild（包：flatter/src/widgets/framework.dart:4218:5）
E/flatter（10049）：#32组件元素。_firstBuild（包：flatter/src/widgets/framework.dart:4481:5）
E/flatter（10049）：#33 ComponentElement.mount（包：flatter/src/widgets/framework.dart:4476:5）
E/flatter（10049）：#34 Element.inflateWidget（包：flatter/src/widgets/framework.dart:3446:14）
E/flatter（10049）：#35 multi-childrenderobjectelement.mount（包：flatter/src/widgets/framework.dart:5947:32）
E/flatter（10049）：#36 Element.inflateWidget（包：flatter/src/widgets/framework.dart:3446:14）
E/flatter（10049）：#37 Element.updateChild（包：flatter/src/widgets/framework.dart:3214:18）
E/flatter（10049）：#38 ComponentElement.performRebuild（包：flatter/src/widgets/framework.dart:4527:16）
E/flatter（10049）：#39 stateflement.performRebuild（包：flatter/src/widgets/framework.dart:4675:11）
E/flatter（10049）：#40 Element.rebuild（包：flatter/src/widgets/framework.dart:4218:5）
E/flatter（10049）：#41组件元素。_firstBuild（包：flatter/src/widgets/framework.dart:4481:5）
E/flatter（10049）：#42 StatefulElement._firstBuild（包：flatter/src/widgets/framework.dart:4666:11）
E/flatter（10049）：#43 ComponentElement.mount（包：flatter/src/widgets/framework.dart:4476:5）
E/flatter（10049）：#44 Element.inflateWidget（包：flatter/src/widgets/framework.dart:3446:14）
E/flatter（10049）：#45 Element.updateChild（包：flatter/src/widgets/framework.dart:3214:18）
E/flatter（10049）：#46 ComponentElement.performRebuild（包：flatter/src/widgets/framework.dart:4527
在ws://127.0.0.1:8773/6hBnRZt2y-g=/ws上侦听调试服务
正在将文件同步到为x86构建的Android SDK设备。。。
E/flatter（10049）：[错误：flatter/shell/common/shell.cc（202）]省道错误：未处理的异常：
E/颤振（10049）：握手异常：客户端握手错误（操作系统错误：
E/flatter（10049）：证书\验证\失败：无法获取本地颁发者证书（handshake.cc:354））
E/flatter（10049）：#0 IOClient.send（包：http/src/io_client.dart:33:24）
E/颤振（10049）：
E/flatter（10049）：#1个BaseClient._sendUnstreamed（包：http/src/base_client.dart:176:38）
E/flatter（10049）：#2 BaseClient.get（包：http/src/base_client.dart:35:7）
E/flatter（10049）：#3 get（包：http/http.dart:46:36）
E/flatter（10049）：#4 34;与客户端（包：http/http.dart:166:20）
E/flatter（10049）：#5get（包：http/http.dart
android:networkSecurityConfig="@xml/network_security_config"

<application
        ...
        android:networkSecurityConfig="@xml/network_security_config">

  static Future fetchStudent() async{
    Dio dio = Dio();
    (dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
    (client){
      client.badCertificateCallback = (X509Certificate cert,String host,int port) => true;
      return client;
    };
    Response response = await dio.get(https://10.0.2.2:5001/api/student);
    return response.data;
  }