flutter 无法加载局域网https图片

问题：flutter 无法加载局域网https图片

具体错误日志如下所示：

======== Exception caught by image resource service ================================================
The following HandshakeException was thrown resolving an image codec:
Handshake error in client (OS Error: 
    CERTIFICATE_VERIFY_FAILED: IP address mismatch(handshake.cc:393))

When the exception was thrown, this was the stack: 
Image provider: CachedNetworkImageProvider("https://xxx/2025/02/21/1740130220197ODgmA_矩形567@2x.png", scale: 1.0)
Image key: CachedNetworkImageProvider("https://xxx//2025/02/21/1740130220197ODgmA_矩形567@2x.png", scale: 1.0)

分析

关键信息：Handshake error in client (OS Error:
CERTIFICATE_VERIFY_FAILED: IP address mismatch(handshake.cc:393))
主要是https的安全证书校验问题，而局域网的https是本地的，官方证书平台是无法进行证书认证的

解决方案

知道了原因，那么我们可以在证书验证时强制返回成功就可以，具体方案：
1、创建HttpOverride，并重写createHttpClient方法，当证书校验失败时强制返回true

import 'dart:io';

class MyHttpOverrides extends HttpOverrides{
  @override
  HttpClient createHttpClient(SecurityContext? context){
    return super.createHttpClient(context)
      ..badCertificateCallback = (X509Certificate cert, String host, int port)=> true;
  }
}

2、在runApp之前，将MyHttpOverrides 设置为全局的MyHttpOverrides

if (currentEnv == Env.DEV) {
    //开发环境
    HttpOverrides.global = MyHttpOverrides();
  }

runApp(const MyApp());

注意：以便使用局域网ip的一般都是开发环境，所以最好在开发环境下使用此种方案，避免安全问题。