问题

我正在使用Flutter的http包，并在本地运行我的REST服务器以进行测试。大约一年前这是有效的，但现在我认为即使是用于测试，我也需要一个SSL证书。

我已经尝试了一些使用openssl的逐步方法，但都失败了。其中一个创建了pem文件，但没有创建证书文件。

是否有关于如何为本地主机创建SSL证书以在Flutter开发中使用的详细步骤说明？

我是否需要与之一起使用特定的IP地址？

或者这是不需要的，有更好的方法来做这个？

答案1

得分: 0

创建一个类如下：

```dart
import 'dart:io';

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

然后在主函数中（通常在lib文件夹中的main.dart文件中）添加以下代码以实例化你的类：

HttpOverrides.global = new MyHttpOverrides();

此问题已经得到解决，请查看：

• https://stackoverflow.com/questions/64533341/how-to-bypass-ssl-certificate-verification-in-flutter
• https://stackoverflow.com/questions/59622087/flutter-https-with-self-signed-certificate/66268556#66268556

获取有关坏证书验证的更多信息。

<details>
<summary>英文:</summary>

create a class like so 

    import &#39;dart:io&#39;;

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

and then in the main function usually in main.dart in the lib folder add this line to instantiate your class 

    HttpOverrides.global = new MyHttpOverrides();

this issue has been dealt with check out :
 * https://stackoverflow.com/questions/64533341/how-to-bypass-ssl-certificate-verification-in-flutter
 * https://stackoverflow.com/questions/59622087/flutter-https-with-self-signed-certificate/66268556#66268556

for more info about the bad certificate validation



</details>



# 答案2
**得分**: 0

```dart
import 'dart:io';

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

import 'dart:io';

class MyHttpOverrides extends HttpOverrides{
@override
// need a null question mark here ✔
HttpClient createHttpClient(SecurityContext? context){
return super.createHttpClient(context)
  ..badCertificateCallback = (X509Certificate cert, String host, int 
port)=> true;
 }
}