flutter应用程序中拒绝flutter_inappwebview本地https连接

在Flutter应用程序中，拒绝使用flutter_inappwebview进行本地HTTPS连接是因为flutter_inappwebview默认情况下不信任自签名的SSL证书。这是为了确保应用程序的安全性和防止潜在的安全风险。

然而，如果你确定自签名的SSL证书是可信的，并且你想要在flutter_inappwebview中使用它进行本地HTTPS连接，你可以通过以下步骤来实现：

在Flutter应用程序的根目录中，创建一个名为assets的文件夹，并将自签名的SSL证书文件（例如certificate.crt）放入其中。
在Flutter应用程序的pubspec.yaml文件中，添加以下代码来声明证书文件：

flutter:
  assets:
    - assets/certificate.crt

在Flutter应用程序的代码中，使用rootBundle来加载证书文件，并创建一个SecurityContext对象来信任该证书。然后，将该SecurityContext对象传递给flutter_inappwebview的InAppWebView组件。

import 'package:flutter/services.dart' show rootBundle;
import 'package:flutter_inappwebview/flutter_inappwebview.dart';

// 加载证书文件
final certificateData = await rootBundle.load('assets/certificate.crt');
final certificate = SecurityContext.defaultContext.useCertificateChainBytes(certificateData.buffer.asUint8List());

// 创建信任证书的SecurityContext对象
final securityContext = SecurityContext.defaultContext;
securityContext.setTrustedCertificatesBytes(certificate);

// 创建InAppWebView组件，并传递SecurityContext对象
final webView = InAppWebView(
  initialUrlRequest: URLRequest(
    url: Uri.parse('https://example.com'),
    headers: {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3'},
  ),
  initialOptions: InAppWebViewGroupOptions(
    crossPlatform: InAppWebViewOptions(
      useShouldOverrideUrlLoading: true,
      useOnLoadResource: true,
      useOnDownloadStart: true,
      useOnReceivedHttpAuthRequest: true,
      useOnReceivedServerTrustAuthRequest: true,
      useOnReceivedClientCertRequest: true,
      useOnReceivedHttpError: true,
      useOnReceivedSslError: true,
      useOnProgressChanged: true,
      useOnConsoleMessage: true,
      useShouldInterceptAjaxRequest: true,
      useShouldInterceptFetchRequest: true,
      useShouldInterceptRequest: true,
      useOnLoadResourceCustomSchemeHandler: true,
      useOnCreateWindow: true,
      useOnWindowFocus: true,
      useOnSafeBrowsingHit: true,
      useOnReceivedContentWorld: true,
      useOnRendererProcessGone: true,
      useOnCrash: true,
      useShouldOverrideUrlLoadingAndroid: true,
      useOnLoadResourceAndroid: true,
      useOnReceivedHttpAuthRequestAndroid: true,
      useOnReceivedServerTrustAuthRequestAndroid: true,
      useOnReceivedClientCertRequestAndroid: true,
      useOnReceivedHttpErrorAndroid: true,
      useOnReceivedSslErrorAndroid: true,
      useOnProgressChangedAndroid: true,
      useOnConsoleMessageAndroid: true,
      useShouldInterceptAjaxRequestAndroid: true,
      useShouldInterceptFetchRequestAndroid: true,
      useShouldInterceptRequestAndroid: true,
      useOnLoadResourceCustomSchemeHandlerAndroid: true,
      useOnCreateWindowAndroid: true,
      useOnSafeBrowsingHitAndroid: true,
      useOnReceivedContentWorldAndroid: true,
      useOnRendererProcessGoneAndroid: true,
      useOnCrashAndroid: true,
      useShouldOverrideUrlLoadingIOS: true,
      useOnLoadResourceIOS: true,
      useOnReceivedHttpAuthRequestIOS: true,
      useOnReceivedServerTrustAuthRequestIOS: true,
      useOnReceivedClientCertRequestIOS: true,
      useOnReceivedHttpErrorIOS: true,
      useOnReceivedSslErrorIOS: true,
      useOnProgressChangedIOS: true,
      useOnConsoleMessageIOS: true,
      useShouldInterceptAjaxRequestIOS: true,
      useShouldInterceptFetchRequestIOS: true,
      useShouldInterceptRequestIOS: true,
      useOnLoadResourceCustomSchemeHandlerIOS: true,
      useOnCreateWindowIOS: true,
      useOnSafeBrowsingHitIOS: true,
      useOnReceivedContentWorldIOS: true,
      useOnRendererProcessGoneIOS: true,
      useOnCrashIOS: true,
    ),
  ),
  onWebViewCreated: (controller) {
    // WebView创建完成后，将SecurityContext对象设置给WebView
    controller.webView.android.useHybridComposition = true;
    controller.webView.android.securityContext = securityContext;
  },
);

通过以上步骤，你可以在Flutter应用程序中使用flutter_inappwebview进行本地HTTPS连接，并信任自签名的SSL证书。请注意，这仅适用于开发环境和测试目的，对于生产环境，建议使用受信任的SSL证书。