// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
app.UseExceptionHandler(appBuilder =>
{
appBuilder.Run(async context =>
{
//从http请求中获取Exception异常对象
var exceptionHandlerPathFeature = context.Features.Get <IExceptionHandlerPathFeature>();
Exception ex = exceptionHandlerPathFeature?.Error;
var knownException = ex as IKnownException;
if (knownException != null)//实现了IKnownException接口，即是我们自定义的异常
{
knownException = KnownException.Build(knownException);
context.Response.StatusCode = StatusCodes.Status200OK;
}
else//未实现IKnownException接口，即不是我们自定义的已知异常
{
var logger = context.RequestServices.GetService <ILogger <Startup03> >();
logger.LogError(exceptionHandlerPathFeature?.Error, exceptionHandlerPathFeature?.Error.Message);
knownException = KnownException.Unknown;
context.Response.StatusCode = StatusCodes.Status500InternalServerError;
}
var jsonOptions = context.RequestServices.GetService <IOptions <JsonOptions> >();
context.Response.ContentType = "application/json; charset=utf-8";
await context.Response.WriteAsync(System.Text.Json.JsonSerializer.Serialize(knownException, jsonOptions.Value.JsonSerializerOptions));
});
});
app.UseHttpsRedirection();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
public IActionResult Index()
{
//从http请求中获取Exception异常对象
var exceptionHandlerPathFeature = HttpContext.Features.Get <IExceptionHandlerPathFeature>();
Exception ex = exceptionHandlerPathFeature?.Error;
var knownException = ex as IKnownException;
if (knownException != null)//实现了IKnownException接口，即是我们自定义的异常
{
knownException = KnownException.Build(knownException);
}
else//未实现IKnownException接口，即不是我们自定义的已知异常
{
var logger = HttpContext.RequestServices.GetService <ILogger <ErrorController> >();
logger.LogError(ex, ex?.Message);
knownException = KnownException.Unknown;
}
return(View(knownException));
}
