ASP.NET Core inject logs in three ways

public class Startup
    {
        public IConfiguration Configuration { get; private set; }
        public IHostingEnvironment HostingEnvironment { get; private set; }
        // Injects IHostingEnvironment and IConfiguration into the constructor. Configuration is set in Program
        public Startup(IHostingEnvironment env, IConfiguration config)
        {
            HostingEnvironment = env;
            Configuration = config;
        }
        public void ConfigureServices(IServiceCollection services){services. AddMvc ();// The second configuration can also include logging, AddLogging(builder => //{// Builder. AddConfiguration (Configuration. GetSection (" Logging ")) / /. AddConsole (); / /});}/ / injection ILoggerFactory
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            if(env.IsDevelopment()) { app.UseDeveloperExceptionPage(); }// The third configuration injects ILogggerFactory and then configures the parameters
            // Add console output
            loggerFactory.AddConsole(Configuration.GetSection("Logging"));// Add debugging outputloggerFactory.AddDebug(); app.UseMvc(); }}Copy the code