ASP.NET WebApi IExceptionLogger不捕获异常

Question

我正在尝试设置如下所述的全局异常处理程序:Web API全局错误处理.我设置了一个在控制器构造函数中抛出异常的情况.但是我的异常没有被记录.相反,WebApi只是将异常和完整堆栈跟踪作为JSON消息返回给调用客户端.

我不知道它是否重要,但我的控制器操作正在使用async/await,如下所示:

[HttpGet, Route("GetLocationNames")]
public async Task<IEnumerable<String>> Get()
{
    return await adapter.GetLocationNames();
}

我有以下实现:

using log4net;
using System.Threading.Tasks;
using System.Web.Http.ExceptionHandling;

namespace warehouse.management.api
{
    public class Log4NetExceptionLogger : ExceptionLogger
    {
        private ILog log = LogManager.GetLogger(typeof(Log4NetExceptionLogger));

        public async override Task LogAsync(ExceptionLoggerContext context, System.Threading.CancellationToken cancellationToken)
        {
            log.Error("An unhandled exception occurred.", context.Exception);
            await base.LogAsync(context, cancellationToken);
        }

        public override void Log(ExceptionLoggerContext context)
        {
            log.Error("An unhandled exception occurred.", context.Exception);
            base.Log(context);
        }

        public override bool ShouldLog(ExceptionLoggerContext context)
        {
            return base.ShouldLog(context);
        }
    }
}

我正在这样注册:

using Owin;
using System.Web.Http;
using System.Web.Http.ExceptionHandling;

namespace warehouse.management.api.Config
{
    public static class WebApiConfig
    {

        public static IAppBuilder RegisterApiConfig(this IAppBuilder app, HttpConfiguration config)
        {
            config.MapHttpAttributeRoutes();
            config.Services.Add(typeof(IExceptionLogger), new Log4NetExceptionLogger());
            return app;
        }
    }
}

这是我的packages.conf:

<?xml version="1.0" encoding="utf-8"?>
<packages>
    <package id="log4net" version="2.0.3" targetFramework="net45" />
    <package id="Microsoft.AspNet.WebApi.Client" version="5.1.2" targetFramework="net45" />
    <package id="Microsoft.AspNet.WebApi.Core" version="5.1.2" targetFramework="net45" />
    <package id="Microsoft.AspNet.WebApi.Owin" version="5.1.2" targetFramework="net45" />
    <package id="Microsoft.AspNet.WebApi.WebHost" version="4.0.20505.0" targetFramework="net45" />
    <package id="Microsoft.Owin" version="2.1.0" targetFramework="net45" />
    <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
    <package id="Newtonsoft.Json" version="4.5.11" targetFramework="net45" />
    <package id="Owin" version="1.0" targetFramework="net45" />
    <package id="Unity" version="3.5.1404.0" targetFramework="net45" />
    <package id="Unity.AspNet.WebApi" version="3.5.1404.0" targetFramework="net45" />
    <package id="WebActivatorEx" version="2.0" targetFramework="net45" />
</packages>

Answer 1

事实证明这是订单.在我的启动类(未显示)中,我将调用移动到我的RegisterApiConfig方法(上面,在OP中)到我调用UseWebApi之前,现在它可以正常工作.