asp.net core 3.0在Microsoft.Extensions.Logging中添加log4net支持


1. 引入log4net、Microsoft.Extensions.Logging.Log4Net.AspNetCore包

2. 添加log4net配置文件

3. 在Program中添加如下代码:

public static IHostBuilder CreateHostBuilder(string[] args) =>
    Host.CreateDefaultBuilder(args)
        .ConfigureLogging((context, logger) => { logger.ClearProviders(); logger.AddLog4Net(new Log4NetProviderOptions() { Log4NetConfigFileName = "Config/log4net.xml", Watch = true }); })
        .ConfigureWebHostDefaults(webBuilder =>
        {
            webBuilder.UseStartup<Startup>();
        });

  

4. 在需要记录日志的类中通过构造函数引入:

public class ActionExceptionHandlerAttribute : Attribute, IActionFilter
{
    private readonly ILogger<ActionExceptionHandlerAttribute> _logger;

    public ActionExceptionHandlerAttribute(ILogger<ActionExceptionHandlerAttribute> logger)
    {
        _logger = logger;
    }
}

  


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