0x00.问题

netcoreapp2.2环境下， startup.cs 代码配置如下

1  public void configure(iapplicationbuilder app, ihostingenvironment env, iloggerfactory loggerfactory)
2   {
3       loggerfactory.addconsole();
4       
5        //……
6   }

 

运行输出警告：“consoleloggerextensions.addconsole(iloggerfactory)”已过时:“this method is obsolete and will be removed in a future version. the recommended alternative is addconsole(this iloggingbuilder builder).”

官方文档也注明此api已经过时。 https://docs.microsoft.com/zh-cn/dotnet/api/microsoft.extensions.logging.consoleloggerextensions.addconsole?view=aspnetcore-2.2#microsoft_extensions_logging_consoleloggerextensions_addconsole_microsoft_extensions_logging_iloggingbuilder_

 

0x01.推荐方法

program.cs  配置如下

 1 public class program
 2 {
 3     public static void main(string[] args)
 4     {
 5         createwebhostbuilder(args).build().run();
 6     }
 7 
 8     public static iwebhostbuilder createwebhostbuilder(string[] args) =>
 9         webhost.createdefaultbuilder(args)
10             .usestartup<startup>() 
11             .configurelogging((hostingcontext, logging) =>
12             {
13                 logging.addconfiguration(hostingcontext.configuration.getsection("logging"));
14                 logging.addconsole();
15                 logging.adddebug();
16             });
17 }

 

或者 startup.cs  configureservices方法中配置如下

 1 public void configureservices(iservicecollection services)
 2 {
 3     services.addlogging(logging =>
 4     {
 5         logging.addconsole();
 6         logging.adddebug();
 7     }); 
 8 
 9     //……
10 }