如何为特定的API控制器指定错误处理程序？

public class ErrorResponse
{
    public int StatusCode { get; set; }
    public string Message { get; set; }
}

public class ErrorHandlingMiddleware
{
    private readonly RequestDelegate _next;

    public ErrorHandlingMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        try
        {
            await _next(context);
        }
        catch (Exception ex)
        {
            await HandleExceptionAsync(context, ex);
        }
    }

    private static Task HandleExceptionAsync(HttpContext context, Exception exception)
    {
        context.Response.ContentType = "application/json";
        context.Response.StatusCode = (int)HttpStatusCode.InternalServerError;

        var errorResponse = new ErrorResponse
        {
            StatusCode = context.Response.StatusCode,
            Message = exception.Message
        };

        return context.Response.WriteAsync(JsonConvert.SerializeObject(errorResponse));
    }
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseMiddleware<ErrorHandlingMiddleware>();
    }

    app.UseRouting();

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
    });
}

[ApiController]
[Route("api/[controller]")]
public class ExampleController : ControllerBase
{
    [HttpGet]
    public IActionResult Get()
    {
        if (someCondition)
        {
            throw new Exception("Custom error message");
        }

        return Ok("Success");
    }
}