.net core 3.1 WorkerService 未加载配置 options/settings
.net core 3.1 WorkerService not loading configuration options/settings
使用 WorkerService (.net core 3.1) 的库存项目模板我无法IOptions<x>
工作。
这是一个最小复制:
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.UseConsoleLifetime()
.ConfigureServices((hostContext, services) =>
{
services.AddOptions();
services.AddHostedService<Worker>();
});
}
邮件设置
public class mailsettings
{
public string smtpserver { get; set; }
}
工人
public class Worker : BackgroundService
{
private readonly mailsettings _mailsettings;
public Worker(IOptions<mailsettings> mailsettings)
{
_mailsettings = mailsettings.Value;
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
Console.WriteLine($"MailSettings SmtpServer: \"{(_mailsettings.smtpserver ?? "**null**")}\"");
Console.WriteLine(Directory.GetCurrentDirectory());
await Task.Delay(1000, stoppingToken);
}
}
}
appsettings.json和appsettings.development.json内容如下:
{
"mailsettings": {
"smtpserver": "mail.com"
}
}
这将写成:
MailSettings SmtpServer: "null"
到控制台。它应该写
"mail.com".
我已经尝试了很多猜测...但无法得到任何结果。
邮件设置未配置到服务集合中,因此 DI 容器无法解析 IOPtions<mailsettings>
在服务集合上调用 Configure<TOPtions>
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.UseConsoleLifetime()
.ConfigureServices((hostContext, services) => {
services
.AddOptions()
.Configure<mailsettings>(hostContext.Configuration.GetSection("mailsettings"))
.AddHostedService<Worker>();
});
使用 WorkerService (.net core 3.1) 的库存项目模板我无法IOptions<x>
工作。
这是一个最小复制:
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.UseConsoleLifetime()
.ConfigureServices((hostContext, services) =>
{
services.AddOptions();
services.AddHostedService<Worker>();
});
}
邮件设置
public class mailsettings
{
public string smtpserver { get; set; }
}
工人
public class Worker : BackgroundService
{
private readonly mailsettings _mailsettings;
public Worker(IOptions<mailsettings> mailsettings)
{
_mailsettings = mailsettings.Value;
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
Console.WriteLine($"MailSettings SmtpServer: \"{(_mailsettings.smtpserver ?? "**null**")}\"");
Console.WriteLine(Directory.GetCurrentDirectory());
await Task.Delay(1000, stoppingToken);
}
}
}
appsettings.json和appsettings.development.json内容如下:
{
"mailsettings": {
"smtpserver": "mail.com"
}
}
这将写成:
MailSettings SmtpServer: "null"
到控制台。它应该写
"mail.com".
我已经尝试了很多猜测...但无法得到任何结果。
邮件设置未配置到服务集合中,因此 DI 容器无法解析 IOPtions<mailsettings>
在服务集合上调用 Configure<TOPtions>
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.UseConsoleLifetime()
.ConfigureServices((hostContext, services) => {
services
.AddOptions()
.Configure<mailsettings>(hostContext.Configuration.GetSection("mailsettings"))
.AddHostedService<Worker>();
});