diff --git a/Infrastructure/StartupLogger.cs b/Infrastructure/StartupLogger.cs
new file mode 100644
index 00000000..583ce3db
--- /dev/null
+++ b/Infrastructure/StartupLogger.cs
@@ -0,0 +1,24 @@
+
+
+using Microsoft.Extensions.Logging;
+
+namespace Infrastructure
+{
+    /// <summary>
+    /// 从3.0开始Startup ConfigureServices中不能使用ILogger，需要扩展
+    /// </summary>
+    public class StartupLogger
+    {
+        private readonly ILogger<StartupLogger> _logger;
+
+        public StartupLogger(ILogger<StartupLogger> logger)
+        {
+            _logger = logger;
+        }
+
+        public void LogInformation(string message)
+        {
+            _logger.LogInformation(message);
+        }
+    }
+}
\ No newline at end of file
diff --git a/OpenAuth.Mvc/Startup.cs b/OpenAuth.Mvc/Startup.cs
index 5dc6fd68..4a6a20f6 100644
--- a/OpenAuth.Mvc/Startup.cs
+++ b/OpenAuth.Mvc/Startup.cs
@@ -1,6 +1,6 @@
 using System.IO;
 using Autofac;
-using Infrastructure.Extensions;
+using Infrastructure;
 using Infrastructure.Extensions.AutofacManager;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.DataProtection;
@@ -9,6 +9,7 @@ using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
 using Microsoft.IdentityModel.Tokens;
 using OpenAuth.App;
 using OpenAuth.App.HostedService;
@@ -28,6 +29,12 @@ namespace OpenAuth.Mvc
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
+            services.AddSingleton(provider =>
+            {
+                var service = provider.GetRequiredService<ILogger<StartupLogger>>();
+                return new StartupLogger(service);
+            });
+            var logger = services.BuildServiceProvider().GetRequiredService<StartupLogger>();
             var identityServer = ((ConfigurationSection)Configuration.GetSection("AppSetting:IdentityServerUrl")).Value;
             if (!string.IsNullOrEmpty(identityServer))
             {
@@ -81,16 +88,19 @@ namespace OpenAuth.Mvc
             services.Configure<AppSetting>(Configuration.GetSection("AppSetting"));
 
             //在startup里面只能通过这种方式获取到appsettings里面的值，不能用IOptions😰
-            var dbType = ((ConfigurationSection) Configuration.GetSection("AppSetting:DbType")).Value;
+            var dbType = ((ConfigurationSection)Configuration.GetSection("AppSetting:DbType")).Value;
+            var connectionString = Configuration.GetConnectionString("OpenAuthDBContext");
+            logger.LogInformation($"当前数据库类型：{dbType}，连接字符串：{connectionString}");
+
             if (dbType == Define.DBTYPE_SQLSERVER)
             {
                 services.AddDbContext<OpenAuthDBContext>(options =>
-                    options.UseSqlServer(Configuration.GetConnectionString("OpenAuthDBContext")));
+                    options.UseSqlServer(connectionString));
             }
             else  //mysql
             {
                 services.AddDbContext<OpenAuthDBContext>(options =>
-                    options.UseMySql(Configuration.GetConnectionString("OpenAuthDBContext")));
+                    options.UseMySql(connectionString));
             }
 
             services.AddHttpClient();
diff --git a/OpenAuth.WebApi/Startup.cs b/OpenAuth.WebApi/Startup.cs
index 12898399..23f0c3fd 100644
--- a/OpenAuth.WebApi/Startup.cs
+++ b/OpenAuth.WebApi/Startup.cs
@@ -4,6 +4,7 @@ using System.IO;
 using System.Linq;
 using Autofac;
 using IdentityServer4.AccessTokenValidation;
+using Infrastructure;
 using Infrastructure.Extensions.AutofacManager;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.DataProtection;
@@ -79,7 +80,7 @@ namespace OpenAuth.WebApi
                     SearchOption.AllDirectories).Where(f =>Path.GetExtension(f).ToLower() == ".xml"))
                 {
                     option.IncludeXmlComments(name,includeControllerXmlComments:true);
-                    logger.LogInformation($"find api file{name}");
+                    // logger.LogInformation($"find api file{name}");
                 }
 
                 option.OperationFilter<GlobalHttpHeaderOperationFilter>(); // 添加httpHeader参数
@@ -140,15 +141,17 @@ namespace OpenAuth.WebApi
 //                policy.AllowAnyHeader().AllowAnyMethod().AllowCredentials().WithOrigins(origins)));
             //在startup里面只能通过这种方式获取到appsettings里面的值，不能用IOptions😰
             var dbType = ((ConfigurationSection)Configuration.GetSection("AppSetting:DbType")).Value;
+            var connectionString = Configuration.GetConnectionString("OpenAuthDBContext");
+            logger.LogInformation($"当前数据库类型：{dbType}，连接字符串：{connectionString}");
             if (dbType == Define.DBTYPE_SQLSERVER)
             {
                 services.AddDbContext<OpenAuthDBContext>(options =>
-                    options.UseSqlServer(Configuration.GetConnectionString("OpenAuthDBContext")));
+                    options.UseSqlServer(connectionString));
             }
             else  //mysql
             {
                 services.AddDbContext<OpenAuthDBContext>(options =>
-                    options.UseMySql(Configuration.GetConnectionString("OpenAuthDBContext")));
+                    options.UseMySql(connectionString));
             }
 
             services.AddHttpClient();