可以设置本地调试环境配置

ReportService/.config/dotnet-tools.json

@@ -0,0 +1,12 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "dotnet-ef": {
+      "version": "3.1.5",
+      "commands": [
+        "dotnet-ef"
+      ]
+    }
+  }
+}

ReportService/Properties/launchSettings.json

@@ -8,9 +8,10 @@
     }
   },
   "profiles": {
-    "IIS Express": {
+    "FalconIIS": {
       "commandName": "IISExpress",
       "environmentVariables": {
+        "DbConnStr": "Server=.\\SQLSERVER2008R2;Database=ReportService;User ID=sa;Password=111",
         "ASPNETCORE_ENVIRONMENT": "Development"
       }
     },

ReportService/Startup.cs

@@ -1,10 +1,6 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
-using Microsoft.AspNetCore.HttpsPolicy;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -24,8 +20,9 @@ namespace ReportService
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services) {
 
+            var connStr = Environment.GetEnvironmentVariable("DbConnStr")
+                ??this.Configuration.GetValue<string>("Database:ReportService");
             services.AddDbContext<RSDbContext>(b => {
-                var connStr = this.Configuration.GetValue<string>("Database:ReportService");
                 b.UseSqlServer(connStr);
             });