我正在尝试在我的.net核心2.0应用程序中设置多个环境,请参阅下面的代码.
Configuration file (Launch.JSON)
"configurations": [
{
"name": ".NET Core Launch (web)","type": "coreclr","request": "launch","prelaunchTask": "build",// If you have changed target frameworks,make sure to update the program path.
"program": "${workspaceRoot}/my.api/bin/Debug/netcoreapp2.0/my.api.dll","args": [],"cwd": "${workspaceRoot}/my.api","stopAtEntry": false,"requireExactSource": false,"internalConsoleOptions": "openOnSessionStart","launchbrowser": {
"enabled": true,"args": "${auto-detect-url}","windows": {
"command": "cmd.exe","args": "/C start ${auto-detect-url}"
},"osx": {
"command": "open"
},"linux": {
"command": "xdg-open"
}
},"env": {
"ASPNETCORE_ENVIRONMENT": "Development"
},"sourceFileMap": {
"/Views": "${workspaceRoot}/Views"
}
},{
"name": ".NET Core Attach","request": "attach","processId": "${command:pickProcess}"
}
]
Program.cs
public class Program
{
public static void Main(string[] args)
{
BuildWebHost(args).Run();
}
public static IWebHost BuildWebHost(string[] args) =>
WebHost.CreateDefaultBuilder(args)
.UseStartup<Startup>()
.Build();
}
StartUp.cs
public class Startup
{
public IContainer ApplicationContainer { get; private set; }
private IHostingEnvironment HostingEnvironment { get; set; }
public IConfigurationRoot Configuration { get; }
private string ConnectionString
{
get
{
return this.HostingEnvironment.IsDevelopment() ? Configuration.GetConnectionString("DefaultConnection") : Configuration.GetConnectionString("Production");
}
}
public Startup(IHostingEnvironment env)
{
var builder = new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json",optional: true,reloadOnChange: true)
.AddJsonFile($"appsettings.Development.json",reloadOnChange: true)
.AddJsonFile($"appsettings.Azuredev.json",reloadOnChange: true)
.AddEnvironmentvariables();
Configuration = builder.Build();
this.HostingEnvironment = env;
System.Console.WriteLine(env.EnvironmentName); //here it always give me Production.
}
My issue
我尝试使用命令行,如dotnet run –environment“Development”
因此,它应该在开发环境上运行,但它始终使用Prodution运行,(看看我在startup.cs中添加了console.writeline)
现在奇怪的是,如果我使用F5进行调试,那么它与开发环境完美匹配.
解决方法
您可以更新launchsettings.json以包含“开发”配置文件,然后运行：
dotnet run --launch-profile "Development"
有关launchSettings.json文件配置的更多详细信息,请参阅Working with multiple environments
请注意,commandName可能需要是“Project”(我还没有真正尝试过这么多).示例launchSettings.json如下：
{
"iisSettings": {
"windowsAuthentication": false,"anonymousAuthentication": true,"iisExpress": {
"applicationUrl": "http://localhost:19882/","sslPort": 0
}
},"profiles": {
"Development": {
"commandName": "Project","launchbrowser": true,"environmentvariables": {
"ASPNETCORE_ENVIRONMENT": "Development"
}
}
}
}