如何在启动中的ConfigureServices方法中获得开发/登台/生产托管环境?
public void ConfigureServices(IServiceCollection services)
{
// Which environment are we running under?
}
ConfigureServices方法只接受一个IServiceCollection参数。
如何在启动中的ConfigureServices方法中获得开发/登台/生产托管环境?
public void ConfigureServices(IServiceCollection services)
{
// Which environment are we running under?
}
ConfigureServices方法只接受一个IServiceCollection参数。
当前回答
对于blazor服务器应用程序,我这样做:Startup.cs直接在命名空间声明add
namespace myProjectName.Server
public static class myGlobals
{
public static bool isDevelopment = true;
}
Startup.cs找到Configure方法和env. cs的现有检查。并将上面声明的静态IsDevelopment设置为true或false。
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
myGlobals.isDevelopment = true;
}
else false
在ApplicationUser中初始化数据库连接或其他任何地方
if (myGlobals.isDevelopment)
{
其他回答
如果你需要在你的代码库中某个不容易访问IHostingEnvironment的地方测试这个,另一个简单的方法是这样做的:
bool isDevelopment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT") == "Development";
由于还没有完整的复制和粘贴解决方案,基于Joe Audette的回答:
public IWebHostEnvironment Environment { get; }
public Startup(IWebHostEnvironment environment, IConfiguration configuration)
{
Environment = environment;
...
}
public void ConfigureServices(IServiceCollection services)
{
if (Environment.IsDevelopment())
{
// Do something
}else{
// Do something
}
...
}
我想在我的服务中加入这种环境。这真的很容易做到!我只是像这样把它注入到构造函数中:
private readonly IHostingEnvironment _hostingEnvironment;
public MyEmailService(IHostingEnvironment hostingEnvironment)
{
_hostingEnvironment = hostingEnvironment;
}
现在在稍后的代码中,我可以这样做:
if (_hostingEnvironment.IsProduction()) {
// really send the email.
}
else {
// send the email to the test queue.
}
编辑:
上面的代码是用于。net Core 2的。对于版本3,您将使用IWebHostEnvironment。
来自文档
Configure和ConfigureServices支持特定环境的版本 配置{EnvironmentName}和配置{EnvironmentName}形式的服务:
你可以这样做……
public void ConfigureProductionServices(IServiceCollection services)
{
ConfigureCommonServices(services);
//Services only for production
services.Configure();
}
public void ConfigureDevelopmentServices(IServiceCollection services)
{
ConfigureCommonServices(services);
//Services only for development
services.Configure();
}
public void ConfigureStagingServices(IServiceCollection services)
{
ConfigureCommonServices(services);
//Services only for staging
services.Configure();
}
private void ConfigureCommonServices(IServiceCollection services)
{
//Services common to each environment
}
这可以在没有任何额外属性或方法参数的情况下完成,如下所示:
public void ConfigureServices(IServiceCollection services)
{
IServiceProvider serviceProvider = services.BuildServiceProvider();
IHostingEnvironment env = serviceProvider.GetService<IHostingEnvironment>();
if (env.IsProduction()) DoSomethingDifferentHere();
}