你可以做这样的事情,你可以从任何IConfiguration
.
忽略config["HostedServices"] = "worker1";
它只是为了测试目的。
var config = new ConfigurationBuilder()
.AddJsonFile("appsettings.json", optional: true)
.AddInMemoryCollection()
.Build();
config["HostedServices"] = "worker1";
// config["HostedServices"] = "worker1,worker2";
var hostBuilder = Host.CreateDefaultBuilder(args)
.ConfigureServices((hostContext, services) =>
{
var workersString = config.GetValue<string>("HostedServices");
var workers = workersString.Split(",");
if(workers.Contains("worker1"))
{
services.AddHostedService<Worker1>();
}
if(workers.Contains("worker2"))
{
services.AddHostedService<Worker2>();
}
}).ConfigureLogging(b => {
b.AddConsole();
b.SetMinimumLevel(LogLevel.Information);
});
using(var host = hostBuilder.Build())
{
await host.StartAsync();
await host.StopAsync();
}
可以在此netfiddle中找到可以进行测试的完整示例