.NetCore 3.1 全局异常捕获 API

目录

•  创建自定义的中间件来实现我们的自定义异常处理
• API请求日志记录

 

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 创建自定义的中间件来实现我们的自定义异常处理

1 、CustomExceptionMiddleware

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public class CustomExceptionMiddleware    {        private readonly RequestDelegate _next;        private readonly ILogger<CustomExceptionMiddleware> _logger;        public CustomExceptionMiddleware(RequestDelegate next, ILogger<CustomExceptionMiddleware> logger)        {            _next = next;            _logger = logger;        }          public async Task Invoke(HttpContext context)        {            try            {                await _next(context);            }            catch (Exception e)            {                await ExceptionHandlerAsync(context, e);            }        }          private async Task ExceptionHandlerAsync(HttpContext context, Exception ex)        {            context.Response.ContentType = "application/json";            context.Response.StatusCode = StatusCodes.Status200OK;            _logger.LogError($"系统出现错误：{ex.Message}--{ex.StackTrace}");              var result = new ResultObject(500, ex.Message);              await context.Response.WriteAsync(JsonConvert.SerializeObject(result));        }    }      // Extension method used to add the middleware to the HTTP request pipeline.    public static class CustomExceptionMiddlewareExtensions    {        public static IApplicationBuilder UseCustomExceptionMiddleware(this IApplicationBuilder builder)        {            return builder.UseMiddleware<CustomExceptionMiddleware>();        }    }

2、Configure

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1 2	//全局异常日志 app.UseMiddleware<CustomExceptionMiddleware>();

 

第二种

.NET Core 给我们提供了一种处理全局异常的方式，只需要稍加修改，就可以使用内置且完善的的中间件。我们需要做的修改就是在 Startup 类中修改 Configure方法：

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// 全局异常捕获             app.UseExceptionHandler(errors =>             {                 errors.Run(async context =>                 {                     var feature = context.Features.Get<IExceptionHandlerPathFeature>();                     var error = feature?.Error;                     var result = new ResultObject(500, error.Message);                     if (error != null)                     {                         _logger.LogError($"系统出现错误：{error.Message}-{error.StackTrace}");                     }                       context.Response.StatusCode = StatusCodes.Status200OK;                     context.Response.ContentType = "application/json";                     await context.Response.WriteAsync(JsonConvert.SerializeObject(result));                 });             });

　　

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API请求日志记录

1、ApiLogFilter

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public class ApiLogFilter : IAsyncActionFilter     {         private readonly ILogger logger;           public ApiLogFilter(ILogger<ApiLogFilter> logger)         {             this.logger = logger;         }           public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)         {             string actionArguments = context.ActionArguments.ToJson();               var resultContext = await next();               string url = resultContext.HttpContext.Request.Host + resultContext.HttpContext.Request.Path + resultContext.HttpContext.Request.QueryString;               string method = resultContext.HttpContext.Request.Method;               dynamic result = resultContext.Result.GetType().Name == "EmptyResult" ? new { Value = "EmptyResult" } : resultContext.Result as dynamic;               string response = JsonConvert.SerializeObject(result.Value);               logger.LogInformation($"URL：{url} \n " +                                   $"Method：{method} \n " +                                   $"ActionArguments：{actionArguments}\n " +                                   $"Response：{response}\n ");         }     }

2、Startup ConfigureServices

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services.AddMvc(options =>     {         options.Filters.Add(typeof(ApiLogFilter));     });

　　

转载记录：https://www.cnblogs.com/xiangxiufei/p/13337926.html