AWS SNS：“未配置 RegionEndpoint 或 ServiceURL”

Question

我目前正在尝试将AWS SNS的SMS服务集成到.NET 6中。我有awssdk.simplenotificationservice .7.300.32\包作为依赖项。这是我的 StartupExtension.cs 中的代码

using Amazon;
using Amazon.Runtime;
using Amazon.SimpleNotificationService;
using DataAccess.Comms;
using DataAccess.Dropdown;
using DataAccess.User;
using Service.BusinessLogic;
using Service.Interface;
using Utilities.Hash;
using Utilities.ListToDataTable;
using Utilities.Logger;
using VO.Model;

namespace API
{
public static class StartupExtention
{
    public static IServiceCollection AddCustomServices(
        this IServiceCollection services, 
        IConfiguration configuration, 
        Configuration configPreset,
        IWebHostEnvironment environment
    )
    {
        try
        {
            // other services
            
            //setup aws creds if dev env for other envs the instance will have the role to do the same
            if (environment.IsDevelopment())
            {
                var aws = configPreset.AWS;
                var credentials = new BasicAWSCredentials(aws.AccessKey, aws.SecretKey);
                var clientConfig = new AmazonSimpleNotificationServiceConfig
                {
                    // I tried it with both below methods where aws.Region="ap-south-1"
                    // RegionEndpoint = RegionEndpoint.GetBySystemName(aws.Region),
                    // RegionEndpoint = RegionEndpoint.APSouth1
                };
                services.AddSingleton<IAmazonSimpleNotificationService>(
                    new AmazonSimpleNotificationServiceClient(credentials, clientConfig)
                );
            }
            else
            {
                services.AddSingleton<IAmazonSimpleNotificationService, AmazonSimpleNotificationServiceClient>();
            }

            return services;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }
}
}

它构建项目并启动 swagger 页面，而不会抛出错误。 相关信息：对于这两种方法，clientConfig 的 RegionEndpoing 为 ap-south-1 但 serviceURL 为 null。执行以下代码时

using (var snsClient = new AmazonSimpleNotificationServiceClient())

我收到以下错误 “未配置 RegionEndpoint 或 ServiceURL”

使用以下堆栈跟踪

at Amazon.Runtime.ClientConfig.Validate()
  at Amazon.Runtime.AmazonServiceClient..ctor(AWSCredentials credentials, ClientConfig config)

以“AWSSDK.Core”为来源。 使用的凭证附加了 AmazonSNSFullAccess 策略。我尝试了许多不同的解决方案，但似乎没有一个有效。任何帮助都是appriced。

Answer 1

我忘记使用注入的依赖项，而不是创建一个新的对象。