1、中间件(Middleware)拦截所有的异常并返回给调用者
public class ExceptionHandler
{
private readonly RequestDelegate _next;
public ExceptionHandler(RequestDelegate next)
{
_next = next;
}
public async Task Invoke(HttpContext context)
{
try
{
await _next.Invoke(context);
}
catch (Exception ex)
{
await HandleExceptionAsync(context, ex);
}
}
private async Task HandleExceptionAsync(HttpContext context, Exception exception)
{
var response = context.Response;
response.ContentType = "application/json";
response.StatusCode = (int)HttpStatusCode.InternalServerError;
await response.WriteAsync(JsonConvert.SerializeObject(new
{
// customize as you need
error = new
{
message = exception.Message,
exception = exception.GetType().Name
}
}));
}
}
2、在Startup.cs中Configure方法中配置
public void Configure(IApplicationBuilder app, IHostingEnvironment env, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory)
{
loggerFactory.AddNLog();
env.ConfigureNLog(Path.Combine(AppContext.BaseDirectory, "nlog.config"));
if (env.IsDevelopment())
app.UseDeveloperExceptionPage();
else
app.UseMiddleware<ExceptionHandler>();
app.UseMvc();
}