.Net Core 全局捕获异常-过滤器

1、代码版本

　　.Net Core 版本 2.2

2、自定义异常捕获类

　　新建一个类 CustomerExceptionFilter.cs 继承 Microsoft.AspNetCore.Mvc.Filters.IAsyncExceptionFilter 接口

　　 /// <summary>
    /// 自定义过滤器
    /// </summary>
    public class CustomerExceptionFilter : IAsyncExceptionFilter
    {
        public Task OnExceptionAsync(ExceptionContext context)
        {
            if (context.ExceptionHandled == false)
            {
                // 定义返回数据 
                var result = new Core.Dto.APIResult<dynamic>
                {
                    Code = Core.Dto.APIResultCode.ServerError,
                    Msg = "服务器内部错误！啦啦啦啦啦啦啊",
                    ErrorInfo = context.Exception.Message
                };

                context.Result = new ContentResult
                {
                    StatusCode = 200,
                    ContentType = "application/json;charset=utf-8",
                    Content = JsonConvert.SerializeObject(result, new JsonSerializerSettings()
                    {
                        //设置首字母小写
                        ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver()
                    })
                };
            }
            context.ExceptionHandled = true;
            //throw new NotImplementedException();
            return Task.CompletedTask;
        }
    }

3、添加加过滤器

　　在Startup.cs ConfigureServices方法中追加过滤器

 services.AddMvc(options =>
            {
                options.Filters.Add(new Filters.CustomerExceptionFilter());
            });

4、效果展示